[PATCH v2 1/4] arm64: add "--nounzip" option support in xen_module command

[PATCH v2 1/4] arm64: add "--nounzip" option support in xen_module command

[fu.wei]

From: Fu Wei <fu.wei@linaro.org>

This patch adds "--nounzip" option support in order to
be compatible with the module command of i386, then we can
simplify grub-mkconfig support code.

Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
 grub-core/loader/arm64/xen_boot.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/grub-core/loader/arm64/xen_boot.c b/grub-core/loader/arm64/xen_boot.c
index 8ae43d7..d63e631 100644
--- a/grub-core/loader/arm64/xen_boot.c
+++ b/grub-core/loader/arm64/xen_boot.c
@@ -20,6 +20,7 @@
 #include <grub/charset.h>
 #include <grub/command.h>
 #include <grub/err.h>
+#include <grub/env.h>
 #include <grub/file.h>
 #include <grub/fdt.h>
 #include <grub/list.h>
@@ -379,6 +380,20 @@ grub_cmd_xen_module (grub_command_t cmd __attribute__((unused)),
 
   struct xen_boot_binary *module = NULL;
   grub_file_t file = 0;
+  int nounzip = 0;
+
+  if (!argc)
+    {
+      grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
+      goto fail;
+    }
+
+  if (grub_strcmp (argv[0], "--nounzip") == 0)
+    {
+      argv++;
+      argc--;
+      nounzip = 1;
+    }
 
   if (!argc)
     {
@@ -403,6 +418,8 @@ grub_cmd_xen_module (grub_command_t cmd __attribute__((unused)),
 
   grub_dprintf ("xen_loader", "Init module and node info\n");
 
+  if (nounzip)
+    grub_file_filter_disable_compression ();
   file = grub_file_open (argv[0]);
   if (!file)
     goto fail;
-- 
2.5.0

[PATCH v2 2/4] * util/grub.d/20_linux_xen.in: Add xen_boot command support

[fu.wei]

From: Fu Wei <fu.wei@linaro.org>

This patch adds the support of xen_boot command:
    xen_hypervisor
    xen_module

Also add a new "feature_xen_boot" to indicate this grub support
xen_boot command.

Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
 grub-core/normal/main.c     |  2 +-
 util/grub.d/20_linux_xen.in | 13 ++++++++++---
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c
index 78a70a8..3402a05 100644
--- a/grub-core/normal/main.c
+++ b/grub-core/normal/main.c
@@ -488,7 +488,7 @@ static const char *features[] = {
   "feature_chainloader_bpb", "feature_ntldr", "feature_platform_search_hint",
   "feature_default_font_path", "feature_all_video_module",
   "feature_menuentry_id", "feature_menuentry_options", "feature_200_final",
-  "feature_nativedisk_cmd", "feature_timeout_style"
+  "feature_nativedisk_cmd", "feature_timeout_style", "feature_xen_boot"
 };
 
 GRUB_MOD_INIT(normal)
diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
index 46045db..998ac21 100644
--- a/util/grub.d/20_linux_xen.in
+++ b/util/grub.d/20_linux_xen.in
@@ -122,16 +122,23 @@ linux_entry ()
         else
             xen_rm_opts="no-real-mode edd=off"
         fi
-	multiboot	${rel_xen_dirname}/${xen_basename} placeholder ${xen_args} \${xen_rm_opts}
+        if [ "x\$feature_xen_boot" != xy ]; then
+            xen_loader="multiboot"
+            module_loader="module"
+        else
+            xen_loader="xen_hypervisor"
+            module_loader="xen_module"
+        fi
+	\${xen_loader}	${rel_xen_dirname}/${xen_basename} placeholder ${xen_args} \${xen_rm_opts}
 	echo	'$(echo "$lmessage" | grub_quote)'
-	module	${rel_dirname}/${basename} placeholder root=${linux_root_device_thisversion} ro ${args}
+	\${module_loader}	${rel_dirname}/${basename} placeholder root=${linux_root_device_thisversion} ro ${args}
 EOF
   if test -n "${initrd}" ; then
     # TRANSLATORS: ramdisk isn't identifier. Should be translated.
     message="$(gettext_printf "Loading initial ramdisk ...")"
     sed "s/^/$submenu_indentation/" << EOF
 	echo	'$(echo "$message" | grub_quote)'
-	module	--nounzip   ${rel_dirname}/${initrd}
+	\${module_loader} --nounzip	${rel_dirname}/${initrd}
 EOF
   fi
   sed "s/^/$submenu_indentation/" << EOF
-- 
2.5.0

[PATCH v2 3/4] i386, xen: Add xen_hypervisor and xen_module aliases for i386

[fu.wei]

From: Fu Wei <fu.wei@linaro.org>

Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
 grub-core/loader/i386/xen.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/grub-core/loader/i386/xen.c b/grub-core/loader/i386/xen.c
index c4d9689..15b0727 100644
--- a/grub-core/loader/i386/xen.c
+++ b/grub-core/loader/i386/xen.c
@@ -689,6 +689,7 @@ fail:
 }
 
 static grub_command_t cmd_xen, cmd_initrd, cmd_module, cmd_multiboot;
+static grub_command_t cmd_xen_hypervisor, cmd_xen_module;
 
 GRUB_MOD_INIT (xen)
 {
@@ -696,10 +697,14 @@ GRUB_MOD_INIT (xen)
 				   0, N_("Load Linux."));
   cmd_multiboot = grub_register_command ("multiboot", grub_cmd_xen,
 					 0, N_("Load Linux."));
+  cmd_xen_hypervisor = grub_register_command ("xen_hypervisor", grub_cmd_xen,
+					      0, N_("Load Linux."));
   cmd_initrd = grub_register_command ("initrd", grub_cmd_initrd,
 				      0, N_("Load initrd."));
   cmd_module = grub_register_command ("module", grub_cmd_module,
 				      0, N_("Load module."));
+  cmd_xen_module = grub_register_command ("xen_module", grub_cmd_module,
+				      0, N_("Load module."));
   my_mod = mod;
 }
 
@@ -709,4 +714,6 @@ GRUB_MOD_FINI (xen)
   grub_unregister_command (cmd_initrd);
   grub_unregister_command (cmd_multiboot);
   grub_unregister_command (cmd_module);
+  grub_unregister_command (cmd_xen_module);
+  grub_unregister_command (cmd_xen_hypervisor);
 }
-- 
2.5.0

[PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[fu.wei]

From: Fu Wei <fu.wei@linaro.org>

delete: xen_linux, xen_initrd, xen_xsm
add: xen_module

This update bases on
    commit 0edd750e50698854068358ea53528100a9192902
    Author: Vladimir Serbinenko <phcoder@gmail.com>
    Date:   Fri Jan 22 10:18:47 2016 +0100

        xen_boot: Remove obsolete module type distinctions.

Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
 docs/grub.texi | 32 +++++++++-----------------------
 1 file changed, 9 insertions(+), 23 deletions(-)

diff --git a/docs/grub.texi b/docs/grub.texi
index 82f6fa4..0f99c50 100644
--- a/docs/grub.texi
+++ b/docs/grub.texi
@@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
 * videoinfo::                   List available video modes
 @comment * xen_*::              Xen boot commands
 * xen_hypervisor::              Load xen hypervisor binary
-* xen_linux::                   Load dom0 kernel for xen hypervisor
-* xen_initrd::                  Load dom0 initrd for dom0 kernel
-* xen_xsm::                     Load xen security module for xen hypervisor
+* xen_module::                  Load xen modules for xen hypervisor
 @end menu
 
 
@@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
 reloaded after using this command.
 @end deffn
 
-@node xen_linux
-@subsection xen_linux
+@node xen_module
+@subsection xen_module
 
-@deffn Command xen_linux file [arguments]
-Load a dom0 kernel image for xen hypervisor at the booting process of xen.
+@deffn Command xen_module [--nounzip] file [arguments]
+Load a module for xen hypervisor at the booting process of xen.
 The rest of the line is passed verbatim as the module command line.
+Each module will be identified by the order in which the modules are added.
+The 1st module: dom0 kernel image
+The 2nd module: dom0 ramdisk
+All subsequent modules: UNKNOW
 @end deffn
 
-@node xen_initrd
-@subsection xen_initrd
-
-@deffn Command xen_initrd file
-Load a initrd image for dom0 kernel at the booting process of xen.
-@end deffn
-
-@node xen_xsm
-@subsection xen_xsm
-
-@deffn Command xen_xsm file
-Load a xen security module for xen hypervisor at the booting process of xen.
-See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
-@end deffn
-
-
 @node Networking commands
 @section The list of networking commands
 
-- 
2.5.0

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Andrei Borzenkov]

25.02.2016 09:39, fu.wei@linaro.org пишет:
> From: Fu Wei <fu.wei@linaro.org>
> 
> delete: xen_linux, xen_initrd, xen_xsm
> add: xen_module
> 
> This update bases on
>     commit 0edd750e50698854068358ea53528100a9192902
>     Author: Vladimir Serbinenko <phcoder@gmail.com>
>     Date:   Fri Jan 22 10:18:47 2016 +0100
> 
>         xen_boot: Remove obsolete module type distinctions.
> 
> Signed-off-by: Fu Wei <fu.wei@linaro.org>
> ---
>  docs/grub.texi | 32 +++++++++-----------------------
>  1 file changed, 9 insertions(+), 23 deletions(-)
> 
> diff --git a/docs/grub.texi b/docs/grub.texi
> index 82f6fa4..0f99c50 100644
> --- a/docs/grub.texi
> +++ b/docs/grub.texi
> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>  * videoinfo::                   List available video modes
>  @comment * xen_*::              Xen boot commands
>  * xen_hypervisor::              Load xen hypervisor binary
> -* xen_linux::                   Load dom0 kernel for xen hypervisor
> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
> -* xen_xsm::                     Load xen security module for xen hypervisor
> +* xen_module::                  Load xen modules for xen hypervisor
>  @end menu
>  
>  
> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>  reloaded after using this command.
>  @end deffn
>  
> -@node xen_linux
> -@subsection xen_linux
> +@node xen_module
> +@subsection xen_module
>  
> -@deffn Command xen_linux file [arguments]
> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
> +@deffn Command xen_module [--nounzip] file [arguments]
> +Load a module for xen hypervisor at the booting process of xen.
>  The rest of the line is passed verbatim as the module command line.
> +Each module will be identified by the order in which the modules are added.
> +The 1st module: dom0 kernel image
> +The 2nd module: dom0 ramdisk
> +All subsequent modules: UNKNOW
>  @end deffn
>  

Hmm ... from previous discussion I gathered that Xen can detect module
type. What if there is no initrd for dom0? How can subsequent modules be
loaded then?

> -@node xen_initrd
> -@subsection xen_initrd
> -
> -@deffn Command xen_initrd file
> -Load a initrd image for dom0 kernel at the booting process of xen.
> -@end deffn
> -
> -@node xen_xsm
> -@subsection xen_xsm
> -
> -@deffn Command xen_xsm file
> -Load a xen security module for xen hypervisor at the booting process of xen.
> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
> -@end deffn
> -
> -
>  @node Networking commands
>  @section The list of networking commands
>  
> 


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Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Andrei Borzenkov]

25.02.2016 09:39, fu.wei@linaro.org пишет:
> From: Fu Wei <fu.wei@linaro.org>
> 
> delete: xen_linux, xen_initrd, xen_xsm
> add: xen_module
> 
> This update bases on
>     commit 0edd750e50698854068358ea53528100a9192902
>     Author: Vladimir Serbinenko <phcoder@gmail.com>
>     Date:   Fri Jan 22 10:18:47 2016 +0100
> 
>         xen_boot: Remove obsolete module type distinctions.
> 
> Signed-off-by: Fu Wei <fu.wei@linaro.org>
> ---
>  docs/grub.texi | 32 +++++++++-----------------------
>  1 file changed, 9 insertions(+), 23 deletions(-)
> 
> diff --git a/docs/grub.texi b/docs/grub.texi
> index 82f6fa4..0f99c50 100644
> --- a/docs/grub.texi
> +++ b/docs/grub.texi
> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>  * videoinfo::                   List available video modes
>  @comment * xen_*::              Xen boot commands
>  * xen_hypervisor::              Load xen hypervisor binary
> -* xen_linux::                   Load dom0 kernel for xen hypervisor
> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
> -* xen_xsm::                     Load xen security module for xen hypervisor
> +* xen_module::                  Load xen modules for xen hypervisor
>  @end menu
>  
>  
> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>  reloaded after using this command.
>  @end deffn
>  
> -@node xen_linux
> -@subsection xen_linux
> +@node xen_module
> +@subsection xen_module
>  
> -@deffn Command xen_linux file [arguments]
> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
> +@deffn Command xen_module [--nounzip] file [arguments]
> +Load a module for xen hypervisor at the booting process of xen.
>  The rest of the line is passed verbatim as the module command line.
> +Each module will be identified by the order in which the modules are added.
> +The 1st module: dom0 kernel image
> +The 2nd module: dom0 ramdisk
> +All subsequent modules: UNKNOW
>  @end deffn
>  

Hmm ... from previous discussion I gathered that Xen can detect module
type. What if there is no initrd for dom0? How can subsequent modules be
loaded then?

> -@node xen_initrd
> -@subsection xen_initrd
> -
> -@deffn Command xen_initrd file
> -Load a initrd image for dom0 kernel at the booting process of xen.
> -@end deffn
> -
> -@node xen_xsm
> -@subsection xen_xsm
> -
> -@deffn Command xen_xsm file
> -Load a xen security module for xen hypervisor at the booting process of xen.
> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
> -@end deffn
> -
> -
>  @node Networking commands
>  @section The list of networking commands
>  
> 

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Doug Goldstein]

[-- Attachment #1.1: Type: text/plain, Size: 719 bytes --]

On 2/25/16 12:39 AM, fu.wei@linaro.org wrote:
> From: Fu Wei <fu.wei@linaro.org>
> -@deffn Command xen_linux file [arguments]
> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
> +@deffn Command xen_module [--nounzip] file [arguments]
> +Load a module for xen hypervisor at the booting process of xen.
>  The rest of the line is passed verbatim as the module command line.
> +Each module will be identified by the order in which the modules are added.
> +The 1st module: dom0 kernel image
> +The 2nd module: dom0 ramdisk
> +All subsequent modules: UNKNOW

Missing an 'N' at the end there. Probably worth mentioning that the
ramdisk is optional as well.

-- 
Doug Goldstein


[-- Attachment #1.2: OpenPGP digital signature --]
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[-- Attachment #2: Type: text/plain, Size: 126 bytes --]

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Re: [Xen-devel] [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Doug Goldstein]

[-- Attachment #1: Type: text/plain, Size: 719 bytes --]

On 2/25/16 12:39 AM, fu.wei@linaro.org wrote:
> From: Fu Wei <fu.wei@linaro.org>
> -@deffn Command xen_linux file [arguments]
> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
> +@deffn Command xen_module [--nounzip] file [arguments]
> +Load a module for xen hypervisor at the booting process of xen.
>  The rest of the line is passed verbatim as the module command line.
> +Each module will be identified by the order in which the modules are added.
> +The 1st module: dom0 kernel image
> +The 2nd module: dom0 ramdisk
> +All subsequent modules: UNKNOW

Missing an 'N' at the end there. Probably worth mentioning that the
ramdisk is optional as well.

-- 
Doug Goldstein


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 959 bytes --]

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Fu Wei]

Hi Andrei

On 26 February 2016 at 01:34, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
> 25.02.2016 09:39, fu.wei@linaro.org пишет:
>> From: Fu Wei <fu.wei@linaro.org>
>>
>> delete: xen_linux, xen_initrd, xen_xsm
>> add: xen_module
>>
>> This update bases on
>>     commit 0edd750e50698854068358ea53528100a9192902
>>     Author: Vladimir Serbinenko <phcoder@gmail.com>
>>     Date:   Fri Jan 22 10:18:47 2016 +0100
>>
>>         xen_boot: Remove obsolete module type distinctions.
>>
>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>> ---
>>  docs/grub.texi | 32 +++++++++-----------------------
>>  1 file changed, 9 insertions(+), 23 deletions(-)
>>
>> diff --git a/docs/grub.texi b/docs/grub.texi
>> index 82f6fa4..0f99c50 100644
>> --- a/docs/grub.texi
>> +++ b/docs/grub.texi
>> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>>  * videoinfo::                   List available video modes
>>  @comment * xen_*::              Xen boot commands
>>  * xen_hypervisor::              Load xen hypervisor binary
>> -* xen_linux::                   Load dom0 kernel for xen hypervisor
>> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
>> -* xen_xsm::                     Load xen security module for xen hypervisor
>> +* xen_module::                  Load xen modules for xen hypervisor
>>  @end menu
>>
>>
>> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>>  reloaded after using this command.
>>  @end deffn
>>
>> -@node xen_linux
>> -@subsection xen_linux
>> +@node xen_module
>> +@subsection xen_module
>>
>> -@deffn Command xen_linux file [arguments]
>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>> +@deffn Command xen_module [--nounzip] file [arguments]
>> +Load a module for xen hypervisor at the booting process of xen.
>>  The rest of the line is passed verbatim as the module command line.
>> +Each module will be identified by the order in which the modules are added.
>> +The 1st module: dom0 kernel image
>> +The 2nd module: dom0 ramdisk
>> +All subsequent modules: UNKNOW
>>  @end deffn
>>
>
> Hmm ... from previous discussion I gathered that Xen can detect module
> type. What if there is no initrd for dom0? How can subsequent modules be

Now , Xen detect module type by the order. (at least on ARM64).
I think i386 is using Multiboot(2) protocol, so maybe this order is
nothing to do with i386.

so maybe we can say:
-----------------------------
On ARM64, each module will be identified by the order in which the
modules are added.
The 1st module: dom0 kernel image
The 2nd module: dom0 ramdisk (optional)
All subsequent modules: UNKNOWN

On i386,  the modules will be identified by Multiboot(2) protocol.
-----------------------------

Is that better?  please correct me if I miss something.

> loaded then?
>
>> -@node xen_initrd
>> -@subsection xen_initrd
>> -
>> -@deffn Command xen_initrd file
>> -Load a initrd image for dom0 kernel at the booting process of xen.
>> -@end deffn
>> -
>> -@node xen_xsm
>> -@subsection xen_xsm
>> -
>> -@deffn Command xen_xsm file
>> -Load a xen security module for xen hypervisor at the booting process of xen.
>> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
>> -@end deffn
>> -
>> -
>>  @node Networking commands
>>  @section The list of networking commands
>>
>>
>



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

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Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Fu Wei]

Hi Andrei

On 26 February 2016 at 01:34, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
> 25.02.2016 09:39, fu.wei@linaro.org пишет:
>> From: Fu Wei <fu.wei@linaro.org>
>>
>> delete: xen_linux, xen_initrd, xen_xsm
>> add: xen_module
>>
>> This update bases on
>>     commit 0edd750e50698854068358ea53528100a9192902
>>     Author: Vladimir Serbinenko <phcoder@gmail.com>
>>     Date:   Fri Jan 22 10:18:47 2016 +0100
>>
>>         xen_boot: Remove obsolete module type distinctions.
>>
>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>> ---
>>  docs/grub.texi | 32 +++++++++-----------------------
>>  1 file changed, 9 insertions(+), 23 deletions(-)
>>
>> diff --git a/docs/grub.texi b/docs/grub.texi
>> index 82f6fa4..0f99c50 100644
>> --- a/docs/grub.texi
>> +++ b/docs/grub.texi
>> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>>  * videoinfo::                   List available video modes
>>  @comment * xen_*::              Xen boot commands
>>  * xen_hypervisor::              Load xen hypervisor binary
>> -* xen_linux::                   Load dom0 kernel for xen hypervisor
>> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
>> -* xen_xsm::                     Load xen security module for xen hypervisor
>> +* xen_module::                  Load xen modules for xen hypervisor
>>  @end menu
>>
>>
>> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>>  reloaded after using this command.
>>  @end deffn
>>
>> -@node xen_linux
>> -@subsection xen_linux
>> +@node xen_module
>> +@subsection xen_module
>>
>> -@deffn Command xen_linux file [arguments]
>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>> +@deffn Command xen_module [--nounzip] file [arguments]
>> +Load a module for xen hypervisor at the booting process of xen.
>>  The rest of the line is passed verbatim as the module command line.
>> +Each module will be identified by the order in which the modules are added.
>> +The 1st module: dom0 kernel image
>> +The 2nd module: dom0 ramdisk
>> +All subsequent modules: UNKNOW
>>  @end deffn
>>
>
> Hmm ... from previous discussion I gathered that Xen can detect module
> type. What if there is no initrd for dom0? How can subsequent modules be

Now , Xen detect module type by the order. (at least on ARM64).
I think i386 is using Multiboot(2) protocol, so maybe this order is
nothing to do with i386.

so maybe we can say:
-----------------------------
On ARM64, each module will be identified by the order in which the
modules are added.
The 1st module: dom0 kernel image
The 2nd module: dom0 ramdisk (optional)
All subsequent modules: UNKNOWN

On i386,  the modules will be identified by Multiboot(2) protocol.
-----------------------------

Is that better?  please correct me if I miss something.

> loaded then?
>
>> -@node xen_initrd
>> -@subsection xen_initrd
>> -
>> -@deffn Command xen_initrd file
>> -Load a initrd image for dom0 kernel at the booting process of xen.
>> -@end deffn
>> -
>> -@node xen_xsm
>> -@subsection xen_xsm
>> -
>> -@deffn Command xen_xsm file
>> -Load a xen security module for xen hypervisor at the booting process of xen.
>> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
>> -@end deffn
>> -
>> -
>>  @node Networking commands
>>  @section The list of networking commands
>>
>>
>



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

Re: [Xen-devel] [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Fu Wei]

Hi Doug,

On 26 February 2016 at 06:26, Doug Goldstein <cardoe@cardoe.com> wrote:
> On 2/25/16 12:39 AM, fu.wei@linaro.org wrote:
>> From: Fu Wei <fu.wei@linaro.org>
>> -@deffn Command xen_linux file [arguments]
>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>> +@deffn Command xen_module [--nounzip] file [arguments]
>> +Load a module for xen hypervisor at the booting process of xen.
>>  The rest of the line is passed verbatim as the module command line.
>> +Each module will be identified by the order in which the modules are added.
>> +The 1st module: dom0 kernel image
>> +The 2nd module: dom0 ramdisk
>> +All subsequent modules: UNKNOW
>
> Missing an 'N' at the end there. Probably worth mentioning that the
> ramdisk is optional as well.

Thanks for correction, will fix it.


>
> --
> Doug Goldstein
>



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Fu Wei]

Hi Andrei

On 26 February 2016 at 12:48, Fu Wei <fu.wei@linaro.org> wrote:
> Hi Andrei
>
> On 26 February 2016 at 01:34, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>> 25.02.2016 09:39, fu.wei@linaro.org пишет:
>>> From: Fu Wei <fu.wei@linaro.org>
>>>
>>> delete: xen_linux, xen_initrd, xen_xsm
>>> add: xen_module
>>>
>>> This update bases on
>>>     commit 0edd750e50698854068358ea53528100a9192902
>>>     Author: Vladimir Serbinenko <phcoder@gmail.com>
>>>     Date:   Fri Jan 22 10:18:47 2016 +0100
>>>
>>>         xen_boot: Remove obsolete module type distinctions.
>>>
>>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>>> ---
>>>  docs/grub.texi | 32 +++++++++-----------------------
>>>  1 file changed, 9 insertions(+), 23 deletions(-)
>>>
>>> diff --git a/docs/grub.texi b/docs/grub.texi
>>> index 82f6fa4..0f99c50 100644
>>> --- a/docs/grub.texi
>>> +++ b/docs/grub.texi
>>> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>>>  * videoinfo::                   List available video modes
>>>  @comment * xen_*::              Xen boot commands
>>>  * xen_hypervisor::              Load xen hypervisor binary
>>> -* xen_linux::                   Load dom0 kernel for xen hypervisor
>>> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
>>> -* xen_xsm::                     Load xen security module for xen hypervisor
>>> +* xen_module::                  Load xen modules for xen hypervisor
>>>  @end menu
>>>
>>>
>>> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>>>  reloaded after using this command.
>>>  @end deffn
>>>
>>> -@node xen_linux
>>> -@subsection xen_linux
>>> +@node xen_module
>>> +@subsection xen_module
>>>
>>> -@deffn Command xen_linux file [arguments]
>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>> +Load a module for xen hypervisor at the booting process of xen.
>>>  The rest of the line is passed verbatim as the module command line.
>>> +Each module will be identified by the order in which the modules are added.
>>> +The 1st module: dom0 kernel image
>>> +The 2nd module: dom0 ramdisk
>>> +All subsequent modules: UNKNOW
>>>  @end deffn
>>>
>>
>> Hmm ... from previous discussion I gathered that Xen can detect module
>> type. What if there is no initrd for dom0? How can subsequent modules be

The problem is (on ARM64) if  there is no initrd for dom0, then the
second module loaded
will be treated as  ramdisk.  Maybe  we need to mention that?

>
> Now , Xen detect module type by the order. (at least on ARM64).
> I think i386 is using Multiboot(2) protocol, so maybe this order is
> nothing to do with i386.
>
> so maybe we can say:
> -----------------------------
> On ARM64, each module will be identified by the order in which the
> modules are added.
> The 1st module: dom0 kernel image
> The 2nd module: dom0 ramdisk (optional)
> All subsequent modules: UNKNOWN
>
> On i386,  the modules will be identified by Multiboot(2) protocol.
> -----------------------------
>
> Is that better?  please correct me if I miss something.
>
>> loaded then?
>>
>>> -@node xen_initrd
>>> -@subsection xen_initrd
>>> -
>>> -@deffn Command xen_initrd file
>>> -Load a initrd image for dom0 kernel at the booting process of xen.
>>> -@end deffn
>>> -
>>> -@node xen_xsm
>>> -@subsection xen_xsm
>>> -
>>> -@deffn Command xen_xsm file
>>> -Load a xen security module for xen hypervisor at the booting process of xen.
>>> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
>>> -@end deffn
>>> -
>>> -
>>>  @node Networking commands
>>>  @section The list of networking commands
>>>
>>>
>>
>
>
>
> --
> Best regards,
>
> Fu Wei
> Software Engineer
> Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
> Ph: +86 21 61221326(direct)
> Ph: +86 186 2020 4684 (mobile)
> Room 1512, Regus One Corporate Avenue,Level 15,
> One Corporate Avenue,222 Hubin Road,Huangpu District,
> Shanghai,China 200021



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

On 26 February 2016 at 12:48, Fu Wei <fu.wei@linaro.org> wrote:
> Hi Andrei
>
> On 26 February 2016 at 01:34, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>> 25.02.2016 09:39, fu.wei@linaro.org пишет:
>>> From: Fu Wei <fu.wei@linaro.org>
>>>
>>> delete: xen_linux, xen_initrd, xen_xsm
>>> add: xen_module
>>>
>>> This update bases on
>>>     commit 0edd750e50698854068358ea53528100a9192902
>>>     Author: Vladimir Serbinenko <phcoder@gmail.com>
>>>     Date:   Fri Jan 22 10:18:47 2016 +0100
>>>
>>>         xen_boot: Remove obsolete module type distinctions.
>>>
>>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>>> ---
>>>  docs/grub.texi | 32 +++++++++-----------------------
>>>  1 file changed, 9 insertions(+), 23 deletions(-)
>>>
>>> diff --git a/docs/grub.texi b/docs/grub.texi
>>> index 82f6fa4..0f99c50 100644
>>> --- a/docs/grub.texi
>>> +++ b/docs/grub.texi
>>> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>>>  * videoinfo::                   List available video modes
>>>  @comment * xen_*::              Xen boot commands
>>>  * xen_hypervisor::              Load xen hypervisor binary
>>> -* xen_linux::                   Load dom0 kernel for xen hypervisor
>>> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
>>> -* xen_xsm::                     Load xen security module for xen hypervisor
>>> +* xen_module::                  Load xen modules for xen hypervisor
>>>  @end menu
>>>
>>>
>>> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>>>  reloaded after using this command.
>>>  @end deffn
>>>
>>> -@node xen_linux
>>> -@subsection xen_linux
>>> +@node xen_module
>>> +@subsection xen_module
>>>
>>> -@deffn Command xen_linux file [arguments]
>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>> +Load a module for xen hypervisor at the booting process of xen.
>>>  The rest of the line is passed verbatim as the module command line.
>>> +Each module will be identified by the order in which the modules are added.
>>> +The 1st module: dom0 kernel image
>>> +The 2nd module: dom0 ramdisk
>>> +All subsequent modules: UNKNOW
>>>  @end deffn
>>>
>>
>> Hmm ... from previous discussion I gathered that Xen can detect module
>> type. What if there is no initrd for dom0? How can subsequent modules be
>
> Now , Xen detect module type by the order. (at least on ARM64).
> I think i386 is using Multiboot(2) protocol, so maybe this order is
> nothing to do with i386.
>
> so maybe we can say:
> -----------------------------
> On ARM64, each module will be identified by the order in which the
> modules are added.
> The 1st module: dom0 kernel image
> The 2nd module: dom0 ramdisk (optional)
> All subsequent modules: UNKNOWN
>
> On i386,  the modules will be identified by Multiboot(2) protocol.
> -----------------------------
>
> Is that better?  please correct me if I miss something.
>
>> loaded then?
>>
>>> -@node xen_initrd
>>> -@subsection xen_initrd
>>> -
>>> -@deffn Command xen_initrd file
>>> -Load a initrd image for dom0 kernel at the booting process of xen.
>>> -@end deffn
>>> -
>>> -@node xen_xsm
>>> -@subsection xen_xsm
>>> -
>>> -@deffn Command xen_xsm file
>>> -Load a xen security module for xen hypervisor at the booting process of xen.
>>> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
>>> -@end deffn
>>> -
>>> -
>>>  @node Networking commands
>>>  @section The list of networking commands
>>>
>>>
>>
>
>
>
> --
> Best regards,
>
> Fu Wei
> Software Engineer
> Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
> Ph: +86 21 61221326(direct)
> Ph: +86 186 2020 4684 (mobile)
> Room 1512, Regus One Corporate Avenue,Level 15,
> One Corporate Avenue,222 Hubin Road,Huangpu District,
> Shanghai,China 200021



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Fu Wei]

Hi Andrei

On 26 February 2016 at 12:48, Fu Wei <fu.wei@linaro.org> wrote:
> Hi Andrei
>
> On 26 February 2016 at 01:34, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>> 25.02.2016 09:39, fu.wei@linaro.org пишет:
>>> From: Fu Wei <fu.wei@linaro.org>
>>>
>>> delete: xen_linux, xen_initrd, xen_xsm
>>> add: xen_module
>>>
>>> This update bases on
>>>     commit 0edd750e50698854068358ea53528100a9192902
>>>     Author: Vladimir Serbinenko <phcoder@gmail.com>
>>>     Date:   Fri Jan 22 10:18:47 2016 +0100
>>>
>>>         xen_boot: Remove obsolete module type distinctions.
>>>
>>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>>> ---
>>>  docs/grub.texi | 32 +++++++++-----------------------
>>>  1 file changed, 9 insertions(+), 23 deletions(-)
>>>
>>> diff --git a/docs/grub.texi b/docs/grub.texi
>>> index 82f6fa4..0f99c50 100644
>>> --- a/docs/grub.texi
>>> +++ b/docs/grub.texi
>>> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>>>  * videoinfo::                   List available video modes
>>>  @comment * xen_*::              Xen boot commands
>>>  * xen_hypervisor::              Load xen hypervisor binary
>>> -* xen_linux::                   Load dom0 kernel for xen hypervisor
>>> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
>>> -* xen_xsm::                     Load xen security module for xen hypervisor
>>> +* xen_module::                  Load xen modules for xen hypervisor
>>>  @end menu
>>>
>>>
>>> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>>>  reloaded after using this command.
>>>  @end deffn
>>>
>>> -@node xen_linux
>>> -@subsection xen_linux
>>> +@node xen_module
>>> +@subsection xen_module
>>>
>>> -@deffn Command xen_linux file [arguments]
>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>> +Load a module for xen hypervisor at the booting process of xen.
>>>  The rest of the line is passed verbatim as the module command line.
>>> +Each module will be identified by the order in which the modules are added.
>>> +The 1st module: dom0 kernel image
>>> +The 2nd module: dom0 ramdisk
>>> +All subsequent modules: UNKNOW
>>>  @end deffn
>>>
>>
>> Hmm ... from previous discussion I gathered that Xen can detect module
>> type. What if there is no initrd for dom0? How can subsequent modules be

The problem is (on ARM64) if  there is no initrd for dom0, then the
second module loaded
will be treated as  ramdisk.  Maybe  we need to mention that?

>
> Now , Xen detect module type by the order. (at least on ARM64).
> I think i386 is using Multiboot(2) protocol, so maybe this order is
> nothing to do with i386.
>
> so maybe we can say:
> -----------------------------
> On ARM64, each module will be identified by the order in which the
> modules are added.
> The 1st module: dom0 kernel image
> The 2nd module: dom0 ramdisk (optional)
> All subsequent modules: UNKNOWN
>
> On i386,  the modules will be identified by Multiboot(2) protocol.
> -----------------------------
>
> Is that better?  please correct me if I miss something.
>
>> loaded then?
>>
>>> -@node xen_initrd
>>> -@subsection xen_initrd
>>> -
>>> -@deffn Command xen_initrd file
>>> -Load a initrd image for dom0 kernel at the booting process of xen.
>>> -@end deffn
>>> -
>>> -@node xen_xsm
>>> -@subsection xen_xsm
>>> -
>>> -@deffn Command xen_xsm file
>>> -Load a xen security module for xen hypervisor at the booting process of xen.
>>> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
>>> -@end deffn
>>> -
>>> -
>>>  @node Networking commands
>>>  @section The list of networking commands
>>>
>>>
>>
>
>
>
> --
> Best regards,
>
> Fu Wei
> Software Engineer
> Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
> Ph: +86 21 61221326(direct)
> Ph: +86 186 2020 4684 (mobile)
> Room 1512, Regus One Corporate Avenue,Level 15,
> One Corporate Avenue,222 Hubin Road,Huangpu District,
> Shanghai,China 200021



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

On 26 February 2016 at 12:48, Fu Wei <fu.wei@linaro.org> wrote:
> Hi Andrei
>
> On 26 February 2016 at 01:34, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>> 25.02.2016 09:39, fu.wei@linaro.org пишет:
>>> From: Fu Wei <fu.wei@linaro.org>
>>>
>>> delete: xen_linux, xen_initrd, xen_xsm
>>> add: xen_module
>>>
>>> This update bases on
>>>     commit 0edd750e50698854068358ea53528100a9192902
>>>     Author: Vladimir Serbinenko <phcoder@gmail.com>
>>>     Date:   Fri Jan 22 10:18:47 2016 +0100
>>>
>>>         xen_boot: Remove obsolete module type distinctions.
>>>
>>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>>> ---
>>>  docs/grub.texi | 32 +++++++++-----------------------
>>>  1 file changed, 9 insertions(+), 23 deletions(-)
>>>
>>> diff --git a/docs/grub.texi b/docs/grub.texi
>>> index 82f6fa4..0f99c50 100644
>>> --- a/docs/grub.texi
>>> +++ b/docs/grub.texi
>>> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>>>  * videoinfo::                   List available video modes
>>>  @comment * xen_*::              Xen boot commands
>>>  * xen_hypervisor::              Load xen hypervisor binary
>>> -* xen_linux::                   Load dom0 kernel for xen hypervisor
>>> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
>>> -* xen_xsm::                     Load xen security module for xen hypervisor
>>> +* xen_module::                  Load xen modules for xen hypervisor
>>>  @end menu
>>>
>>>
>>> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>>>  reloaded after using this command.
>>>  @end deffn
>>>
>>> -@node xen_linux
>>> -@subsection xen_linux
>>> +@node xen_module
>>> +@subsection xen_module
>>>
>>> -@deffn Command xen_linux file [arguments]
>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>> +Load a module for xen hypervisor at the booting process of xen.
>>>  The rest of the line is passed verbatim as the module command line.
>>> +Each module will be identified by the order in which the modules are added.
>>> +The 1st module: dom0 kernel image
>>> +The 2nd module: dom0 ramdisk
>>> +All subsequent modules: UNKNOW
>>>  @end deffn
>>>
>>
>> Hmm ... from previous discussion I gathered that Xen can detect module
>> type. What if there is no initrd for dom0? How can subsequent modules be
>
> Now , Xen detect module type by the order. (at least on ARM64).
> I think i386 is using Multiboot(2) protocol, so maybe this order is
> nothing to do with i386.
>
> so maybe we can say:
> -----------------------------
> On ARM64, each module will be identified by the order in which the
> modules are added.
> The 1st module: dom0 kernel image
> The 2nd module: dom0 ramdisk (optional)
> All subsequent modules: UNKNOWN
>
> On i386,  the modules will be identified by Multiboot(2) protocol.
> -----------------------------
>
> Is that better?  please correct me if I miss something.
>
>> loaded then?
>>
>>> -@node xen_initrd
>>> -@subsection xen_initrd
>>> -
>>> -@deffn Command xen_initrd file
>>> -Load a initrd image for dom0 kernel at the booting process of xen.
>>> -@end deffn
>>> -
>>> -@node xen_xsm
>>> -@subsection xen_xsm
>>> -
>>> -@deffn Command xen_xsm file
>>> -Load a xen security module for xen hypervisor at the booting process of xen.
>>> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
>>> -@end deffn
>>> -
>>> -
>>>  @node Networking commands
>>>  @section The list of networking commands
>>>
>>>
>>
>
>
>
> --
> Best regards,
>
> Fu Wei
> Software Engineer
> Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
> Ph: +86 21 61221326(direct)
> Ph: +86 186 2020 4684 (mobile)
> Room 1512, Regus One Corporate Avenue,Level 15,
> One Corporate Avenue,222 Hubin Road,Huangpu District,
> Shanghai,China 200021



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Andrei Borzenkov]

Отправлено с iPhone

> 26 февр. 2016 г., в 7:48, Fu Wei <fu.wei@linaro.org> написал(а):
> 
> Hi Andrei
> 
>> On 26 February 2016 at 01:34, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>> 25.02.2016 09:39, fu.wei@linaro.org пишет:
>>> From: Fu Wei <fu.wei@linaro.org>
>>> 
>>> delete: xen_linux, xen_initrd, xen_xsm
>>> add: xen_module
>>> 
>>> This update bases on
>>>    commit 0edd750e50698854068358ea53528100a9192902
>>>    Author: Vladimir Serbinenko <phcoder@gmail.com>
>>>    Date:   Fri Jan 22 10:18:47 2016 +0100
>>> 
>>>        xen_boot: Remove obsolete module type distinctions.
>>> 
>>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>>> ---
>>> docs/grub.texi | 32 +++++++++-----------------------
>>> 1 file changed, 9 insertions(+), 23 deletions(-)
>>> 
>>> diff --git a/docs/grub.texi b/docs/grub.texi
>>> index 82f6fa4..0f99c50 100644
>>> --- a/docs/grub.texi
>>> +++ b/docs/grub.texi
>>> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>>> * videoinfo::                   List available video modes
>>> @comment * xen_*::              Xen boot commands
>>> * xen_hypervisor::              Load xen hypervisor binary
>>> -* xen_linux::                   Load dom0 kernel for xen hypervisor
>>> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
>>> -* xen_xsm::                     Load xen security module for xen hypervisor
>>> +* xen_module::                  Load xen modules for xen hypervisor
>>> @end menu
>>> 
>>> 
>>> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>>> reloaded after using this command.
>>> @end deffn
>>> 
>>> -@node xen_linux
>>> -@subsection xen_linux
>>> +@node xen_module
>>> +@subsection xen_module
>>> 
>>> -@deffn Command xen_linux file [arguments]
>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>> +Load a module for xen hypervisor at the booting process of xen.
>>> The rest of the line is passed verbatim as the module command line.
>>> +Each module will be identified by the order in which the modules are added.
>>> +The 1st module: dom0 kernel image
>>> +The 2nd module: dom0 ramdisk
>>> +All subsequent modules: UNKNOW
>>> @end deffn
>> 
>> Hmm ... from previous discussion I gathered that Xen can detect module
>> type. What if there is no initrd for dom0? How can subsequent modules be
> 
> Now , Xen detect module type by the order. (at least on ARM64).
> I think i386 is using Multiboot(2) protocol, so maybe this order is
> nothing to do with i386.
> 

Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.


> so maybe we can say:
> -----------------------------
> On ARM64, each module will be identified by the order in which the
> modules are added.
> The 1st module: dom0 kernel image
> The 2nd module: dom0 ramdisk (optional)
> All subsequent modules: UNKNOWN
> 
> On i386,  the modules will be identified by Multiboot(2) protocol.
> -----------------------------
> 
> Is that better?  please correct me if I miss something.
> 
>> loaded then?
>> 
>>> -@node xen_initrd
>>> -@subsection xen_initrd
>>> -
>>> -@deffn Command xen_initrd file
>>> -Load a initrd image for dom0 kernel at the booting process of xen.
>>> -@end deffn
>>> -
>>> -@node xen_xsm
>>> -@subsection xen_xsm
>>> -
>>> -@deffn Command xen_xsm file
>>> -Load a xen security module for xen hypervisor at the booting process of xen.
>>> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
>>> -@end deffn
>>> -
>>> -
>>> @node Networking commands
>>> @section The list of networking commands
> 
> 
> 
> -- 
> Best regards,
> 
> Fu Wei
> Software Engineer
> Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
> Ph: +86 21 61221326(direct)
> Ph: +86 186 2020 4684 (mobile)
> Room 1512, Regus One Corporate Avenue,Level 15,
> One Corporate Avenue,222 Hubin Road,Huangpu District,
> Shanghai,China 200021

_______________________________________________
Grub-devel mailing list
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Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Andrei Borzenkov]

Отправлено с iPhone

> 26 февр. 2016 г., в 7:48, Fu Wei <fu.wei@linaro.org> написал(а):
> 
> Hi Andrei
> 
>> On 26 February 2016 at 01:34, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>> 25.02.2016 09:39, fu.wei@linaro.org пишет:
>>> From: Fu Wei <fu.wei@linaro.org>
>>> 
>>> delete: xen_linux, xen_initrd, xen_xsm
>>> add: xen_module
>>> 
>>> This update bases on
>>>    commit 0edd750e50698854068358ea53528100a9192902
>>>    Author: Vladimir Serbinenko <phcoder@gmail.com>
>>>    Date:   Fri Jan 22 10:18:47 2016 +0100
>>> 
>>>        xen_boot: Remove obsolete module type distinctions.
>>> 
>>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>>> ---
>>> docs/grub.texi | 32 +++++++++-----------------------
>>> 1 file changed, 9 insertions(+), 23 deletions(-)
>>> 
>>> diff --git a/docs/grub.texi b/docs/grub.texi
>>> index 82f6fa4..0f99c50 100644
>>> --- a/docs/grub.texi
>>> +++ b/docs/grub.texi
>>> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>>> * videoinfo::                   List available video modes
>>> @comment * xen_*::              Xen boot commands
>>> * xen_hypervisor::              Load xen hypervisor binary
>>> -* xen_linux::                   Load dom0 kernel for xen hypervisor
>>> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
>>> -* xen_xsm::                     Load xen security module for xen hypervisor
>>> +* xen_module::                  Load xen modules for xen hypervisor
>>> @end menu
>>> 
>>> 
>>> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>>> reloaded after using this command.
>>> @end deffn
>>> 
>>> -@node xen_linux
>>> -@subsection xen_linux
>>> +@node xen_module
>>> +@subsection xen_module
>>> 
>>> -@deffn Command xen_linux file [arguments]
>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>> +Load a module for xen hypervisor at the booting process of xen.
>>> The rest of the line is passed verbatim as the module command line.
>>> +Each module will be identified by the order in which the modules are added.
>>> +The 1st module: dom0 kernel image
>>> +The 2nd module: dom0 ramdisk
>>> +All subsequent modules: UNKNOW
>>> @end deffn
>> 
>> Hmm ... from previous discussion I gathered that Xen can detect module
>> type. What if there is no initrd for dom0? How can subsequent modules be
> 
> Now , Xen detect module type by the order. (at least on ARM64).
> I think i386 is using Multiboot(2) protocol, so maybe this order is
> nothing to do with i386.
> 

Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.


> so maybe we can say:
> -----------------------------
> On ARM64, each module will be identified by the order in which the
> modules are added.
> The 1st module: dom0 kernel image
> The 2nd module: dom0 ramdisk (optional)
> All subsequent modules: UNKNOWN
> 
> On i386,  the modules will be identified by Multiboot(2) protocol.
> -----------------------------
> 
> Is that better?  please correct me if I miss something.
> 
>> loaded then?
>> 
>>> -@node xen_initrd
>>> -@subsection xen_initrd
>>> -
>>> -@deffn Command xen_initrd file
>>> -Load a initrd image for dom0 kernel at the booting process of xen.
>>> -@end deffn
>>> -
>>> -@node xen_xsm
>>> -@subsection xen_xsm
>>> -
>>> -@deffn Command xen_xsm file
>>> -Load a xen security module for xen hypervisor at the booting process of xen.
>>> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
>>> -@end deffn
>>> -
>>> -
>>> @node Networking commands
>>> @section The list of networking commands
> 
> 
> 
> -- 
> Best regards,
> 
> Fu Wei
> Software Engineer
> Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
> Ph: +86 21 61221326(direct)
> Ph: +86 186 2020 4684 (mobile)
> Room 1512, Regus One Corporate Avenue,Level 15,
> One Corporate Avenue,222 Hubin Road,Huangpu District,
> Shanghai,China 200021

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Fu Wei]

Hi Andrei

On 26 February 2016 at 13:24, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>
>
> Отправлено с iPhone
>
>> 26 февр. 2016 г., в 7:48, Fu Wei <fu.wei@linaro.org> написал(а):
>>
>> Hi Andrei
>>
>>> On 26 February 2016 at 01:34, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>>> 25.02.2016 09:39, fu.wei@linaro.org пишет:
>>>> From: Fu Wei <fu.wei@linaro.org>
>>>>
>>>> delete: xen_linux, xen_initrd, xen_xsm
>>>> add: xen_module
>>>>
>>>> This update bases on
>>>>    commit 0edd750e50698854068358ea53528100a9192902
>>>>    Author: Vladimir Serbinenko <phcoder@gmail.com>
>>>>    Date:   Fri Jan 22 10:18:47 2016 +0100
>>>>
>>>>        xen_boot: Remove obsolete module type distinctions.
>>>>
>>>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>>>> ---
>>>> docs/grub.texi | 32 +++++++++-----------------------
>>>> 1 file changed, 9 insertions(+), 23 deletions(-)
>>>>
>>>> diff --git a/docs/grub.texi b/docs/grub.texi
>>>> index 82f6fa4..0f99c50 100644
>>>> --- a/docs/grub.texi
>>>> +++ b/docs/grub.texi
>>>> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>>>> * videoinfo::                   List available video modes
>>>> @comment * xen_*::              Xen boot commands
>>>> * xen_hypervisor::              Load xen hypervisor binary
>>>> -* xen_linux::                   Load dom0 kernel for xen hypervisor
>>>> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
>>>> -* xen_xsm::                     Load xen security module for xen hypervisor
>>>> +* xen_module::                  Load xen modules for xen hypervisor
>>>> @end menu
>>>>
>>>>
>>>> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>>>> reloaded after using this command.
>>>> @end deffn
>>>>
>>>> -@node xen_linux
>>>> -@subsection xen_linux
>>>> +@node xen_module
>>>> +@subsection xen_module
>>>>
>>>> -@deffn Command xen_linux file [arguments]
>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>> The rest of the line is passed verbatim as the module command line.
>>>> +Each module will be identified by the order in which the modules are added.
>>>> +The 1st module: dom0 kernel image
>>>> +The 2nd module: dom0 ramdisk
>>>> +All subsequent modules: UNKNOW
>>>> @end deffn
>>>
>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>
>> Now , Xen detect module type by the order. (at least on ARM64).
>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>> nothing to do with i386.
>>
>
> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.

Oh, did you mean Wei Liu's patch?

I guess XSM may land as the third module (or the module after linux
kernel, if you don't have initrd)

Yes, agree. (That's actually something to solve on Xen side)

I guess xen can get xsm from a special initrd. so for now there is not
big problem on xsm.

Please correct me if I misunderstand something. :-)

Thanks!

Back to this patch, is that OK for you, or any suggestion?  Thanks !

>
>
>> so maybe we can say:
>> -----------------------------
>> On ARM64, each module will be identified by the order in which the
>> modules are added.
>> The 1st module: dom0 kernel image
>> The 2nd module: dom0 ramdisk (optional)
>> All subsequent modules: UNKNOWN
>>
>> On i386,  the modules will be identified by Multiboot(2) protocol.
>> -----------------------------
>>
>> Is that better?  please correct me if I miss something.
>>
>>> loaded then?
>>>
>>>> -@node xen_initrd
>>>> -@subsection xen_initrd
>>>> -
>>>> -@deffn Command xen_initrd file
>>>> -Load a initrd image for dom0 kernel at the booting process of xen.
>>>> -@end deffn
>>>> -
>>>> -@node xen_xsm
>>>> -@subsection xen_xsm
>>>> -
>>>> -@deffn Command xen_xsm file
>>>> -Load a xen security module for xen hypervisor at the booting process of xen.
>>>> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
>>>> -@end deffn
>>>> -
>>>> -
>>>> @node Networking commands
>>>> @section The list of networking commands
>>
>>
>>
>> --
>> Best regards,
>>
>> Fu Wei
>> Software Engineer
>> Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
>> Ph: +86 21 61221326(direct)
>> Ph: +86 186 2020 4684 (mobile)
>> Room 1512, Regus One Corporate Avenue,Level 15,
>> One Corporate Avenue,222 Hubin Road,Huangpu District,
>> Shanghai,China 200021



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Fu Wei]

Hi Andrei

On 26 February 2016 at 13:24, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>
>
> Отправлено с iPhone
>
>> 26 февр. 2016 г., в 7:48, Fu Wei <fu.wei@linaro.org> написал(а):
>>
>> Hi Andrei
>>
>>> On 26 February 2016 at 01:34, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>>> 25.02.2016 09:39, fu.wei@linaro.org пишет:
>>>> From: Fu Wei <fu.wei@linaro.org>
>>>>
>>>> delete: xen_linux, xen_initrd, xen_xsm
>>>> add: xen_module
>>>>
>>>> This update bases on
>>>>    commit 0edd750e50698854068358ea53528100a9192902
>>>>    Author: Vladimir Serbinenko <phcoder@gmail.com>
>>>>    Date:   Fri Jan 22 10:18:47 2016 +0100
>>>>
>>>>        xen_boot: Remove obsolete module type distinctions.
>>>>
>>>> Signed-off-by: Fu Wei <fu.wei@linaro.org>
>>>> ---
>>>> docs/grub.texi | 32 +++++++++-----------------------
>>>> 1 file changed, 9 insertions(+), 23 deletions(-)
>>>>
>>>> diff --git a/docs/grub.texi b/docs/grub.texi
>>>> index 82f6fa4..0f99c50 100644
>>>> --- a/docs/grub.texi
>>>> +++ b/docs/grub.texi
>>>> @@ -3861,9 +3861,7 @@ you forget a command, you can run the command @command{help}
>>>> * videoinfo::                   List available video modes
>>>> @comment * xen_*::              Xen boot commands
>>>> * xen_hypervisor::              Load xen hypervisor binary
>>>> -* xen_linux::                   Load dom0 kernel for xen hypervisor
>>>> -* xen_initrd::                  Load dom0 initrd for dom0 kernel
>>>> -* xen_xsm::                     Load xen security module for xen hypervisor
>>>> +* xen_module::                  Load xen modules for xen hypervisor
>>>> @end menu
>>>>
>>>>
>>>> @@ -5141,30 +5139,18 @@ verbatim as the @dfn{kernel command-line}. Any other binaries must be
>>>> reloaded after using this command.
>>>> @end deffn
>>>>
>>>> -@node xen_linux
>>>> -@subsection xen_linux
>>>> +@node xen_module
>>>> +@subsection xen_module
>>>>
>>>> -@deffn Command xen_linux file [arguments]
>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>> The rest of the line is passed verbatim as the module command line.
>>>> +Each module will be identified by the order in which the modules are added.
>>>> +The 1st module: dom0 kernel image
>>>> +The 2nd module: dom0 ramdisk
>>>> +All subsequent modules: UNKNOW
>>>> @end deffn
>>>
>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>
>> Now , Xen detect module type by the order. (at least on ARM64).
>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>> nothing to do with i386.
>>
>
> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.

Oh, did you mean Wei Liu's patch?

I guess XSM may land as the third module (or the module after linux
kernel, if you don't have initrd)

Yes, agree. (That's actually something to solve on Xen side)

I guess xen can get xsm from a special initrd. so for now there is not
big problem on xsm.

Please correct me if I misunderstand something. :-)

Thanks!

Back to this patch, is that OK for you, or any suggestion?  Thanks !

>
>
>> so maybe we can say:
>> -----------------------------
>> On ARM64, each module will be identified by the order in which the
>> modules are added.
>> The 1st module: dom0 kernel image
>> The 2nd module: dom0 ramdisk (optional)
>> All subsequent modules: UNKNOWN
>>
>> On i386,  the modules will be identified by Multiboot(2) protocol.
>> -----------------------------
>>
>> Is that better?  please correct me if I miss something.
>>
>>> loaded then?
>>>
>>>> -@node xen_initrd
>>>> -@subsection xen_initrd
>>>> -
>>>> -@deffn Command xen_initrd file
>>>> -Load a initrd image for dom0 kernel at the booting process of xen.
>>>> -@end deffn
>>>> -
>>>> -@node xen_xsm
>>>> -@subsection xen_xsm
>>>> -
>>>> -@deffn Command xen_xsm file
>>>> -Load a xen security module for xen hypervisor at the booting process of xen.
>>>> -See @uref{http://wiki.xen.org/wiki/XSM} for more detail.
>>>> -@end deffn
>>>> -
>>>> -
>>>> @node Networking commands
>>>> @section The list of networking commands
>>
>>
>>
>> --
>> Best regards,
>>
>> Fu Wei
>> Software Engineer
>> Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
>> Ph: +86 21 61221326(direct)
>> Ph: +86 186 2020 4684 (mobile)
>> Room 1512, Regus One Corporate Avenue,Level 15,
>> One Corporate Avenue,222 Hubin Road,Huangpu District,
>> Shanghai,China 200021



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Andrei Borzenkov]

On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
>>>>> +@subsection xen_module
>>>>>
>>>>> -@deffn Command xen_linux file [arguments]
>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>>> The rest of the line is passed verbatim as the module command line.
>>>>> +Each module will be identified by the order in which the modules are added.
>>>>> +The 1st module: dom0 kernel image
>>>>> +The 2nd module: dom0 ramdisk
>>>>> +All subsequent modules: UNKNOW
>>>>> @end deffn
>>>>
>>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>>
>>> Now , Xen detect module type by the order. (at least on ARM64).
>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>>> nothing to do with i386.
>>>
>>
>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
>
> Oh, did you mean Wei Liu's patch?
>
> I guess XSM may land as the third module (or the module after linux
> kernel, if you don't have initrd)
>
> Yes, agree. (That's actually something to solve on Xen side)
>
> I guess xen can get xsm from a special initrd. so for now there is not
> big problem on xsm.
>
> Please correct me if I misunderstand something. :-)
>
> Thanks!
>
> Back to this patch, is that OK for you, or any suggestion?  Thanks !
>

Yes, as this is dedicated Xen loader we should document this mandatory
order - first module must be kernel image, second module must be
initrd. I do not think we need to mention possibility to load more
than two modules until there is clear understanding how it can be done
without initrd.

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Fu Wei]

Hi Andrei,

On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
> On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
>>>>>> +@subsection xen_module
>>>>>>
>>>>>> -@deffn Command xen_linux file [arguments]
>>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>>>> The rest of the line is passed verbatim as the module command line.
>>>>>> +Each module will be identified by the order in which the modules are added.
>>>>>> +The 1st module: dom0 kernel image
>>>>>> +The 2nd module: dom0 ramdisk
>>>>>> +All subsequent modules: UNKNOW
>>>>>> @end deffn
>>>>>
>>>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>>>
>>>> Now , Xen detect module type by the order. (at least on ARM64).
>>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>>>> nothing to do with i386.
>>>>
>>>
>>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
>>
>> Oh, did you mean Wei Liu's patch?
>>
>> I guess XSM may land as the third module (or the module after linux
>> kernel, if you don't have initrd)
>>
>> Yes, agree. (That's actually something to solve on Xen side)
>>
>> I guess xen can get xsm from a special initrd. so for now there is not
>> big problem on xsm.
>>
>> Please correct me if I misunderstand something. :-)
>>
>> Thanks!
>>
>> Back to this patch, is that OK for you, or any suggestion?  Thanks !
>>
>
> Yes, as this is dedicated Xen loader we should document this mandatory
> order - first module must be kernel image, second module must be
> initrd. I do not think we need to mention possibility to load more
> than two modules until there is clear understanding how it can be done
> without initrd.

Great thanks for your review, I have updated and sent the v3 patchset,
Hope I understood your suggestion correctly, Please check.  :-)



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Vladimir 'φ-coder/phcoder' Serbinenko]

[-- Attachment #1.1: Type: text/plain, Size: 2522 bytes --]

On 26.02.2016 12:15, Fu Wei wrote:
> Hi Andrei,
> 
> On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>> On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
>>>>>>> +@subsection xen_module
>>>>>>>
>>>>>>> -@deffn Command xen_linux file [arguments]
>>>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>>>>> The rest of the line is passed verbatim as the module command line.
>>>>>>> +Each module will be identified by the order in which the modules are added.
>>>>>>> +The 1st module: dom0 kernel image
>>>>>>> +The 2nd module: dom0 ramdisk
>>>>>>> +All subsequent modules: UNKNOW
>>>>>>> @end deffn
>>>>>>
>>>>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>>>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>>>>
>>>>> Now , Xen detect module type by the order. (at least on ARM64).
>>>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>>>>> nothing to do with i386.
>>>>>
>>>>
>>>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
>>>
>>> Oh, did you mean Wei Liu's patch?
>>>
>>> I guess XSM may land as the third module (or the module after linux
>>> kernel, if you don't have initrd)
>>>
>>> Yes, agree. (That's actually something to solve on Xen side)
>>>
>>> I guess xen can get xsm from a special initrd. so for now there is not
>>> big problem on xsm.
>>>
>>> Please correct me if I misunderstand something. :-)
>>>
>>> Thanks!
>>>
>>> Back to this patch, is that OK for you, or any suggestion?  Thanks !
>>>
>>
>> Yes, as this is dedicated Xen loader we should document this mandatory
>> order - first module must be kernel image, second module must be
>> initrd. I do not think we need to mention possibility to load more
>> than two modules until there is clear understanding how it can be done
>> without initrd.
> 
> Great thanks for your review, I have updated and sent the v3 patchset,
> Hope I understood your suggestion correctly, Please check.  :-)
> 
Your patches look fine. Let's wait for Andrei's opinion but I'm leaning
to commit them
> 
> 



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[-- Attachment #2: Type: text/plain, Size: 141 bytes --]

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Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Vladimir 'φ-coder/phcoder' Serbinenko]

[-- Attachment #1: Type: text/plain, Size: 2522 bytes --]

On 26.02.2016 12:15, Fu Wei wrote:
> Hi Andrei,
> 
> On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>> On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
>>>>>>> +@subsection xen_module
>>>>>>>
>>>>>>> -@deffn Command xen_linux file [arguments]
>>>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>>>>> The rest of the line is passed verbatim as the module command line.
>>>>>>> +Each module will be identified by the order in which the modules are added.
>>>>>>> +The 1st module: dom0 kernel image
>>>>>>> +The 2nd module: dom0 ramdisk
>>>>>>> +All subsequent modules: UNKNOW
>>>>>>> @end deffn
>>>>>>
>>>>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>>>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>>>>
>>>>> Now , Xen detect module type by the order. (at least on ARM64).
>>>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>>>>> nothing to do with i386.
>>>>>
>>>>
>>>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
>>>
>>> Oh, did you mean Wei Liu's patch?
>>>
>>> I guess XSM may land as the third module (or the module after linux
>>> kernel, if you don't have initrd)
>>>
>>> Yes, agree. (That's actually something to solve on Xen side)
>>>
>>> I guess xen can get xsm from a special initrd. so for now there is not
>>> big problem on xsm.
>>>
>>> Please correct me if I misunderstand something. :-)
>>>
>>> Thanks!
>>>
>>> Back to this patch, is that OK for you, or any suggestion?  Thanks !
>>>
>>
>> Yes, as this is dedicated Xen loader we should document this mandatory
>> order - first module must be kernel image, second module must be
>> initrd. I do not think we need to mention possibility to load more
>> than two modules until there is clear understanding how it can be done
>> without initrd.
> 
> Great thanks for your review, I have updated and sent the v3 patchset,
> Hope I understood your suggestion correctly, Please check.  :-)
> 
Your patches look fine. Let's wait for Andrei's opinion but I'm leaning
to commit them
> 
> 



[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 213 bytes --]

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Fu Wei]

On 26 February 2016 at 22:03, Vladimir 'φ-coder/phcoder' Serbinenko
<phcoder@gmail.com> wrote:
> On 26.02.2016 12:15, Fu Wei wrote:
>> Hi Andrei,
>>
>> On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>>> On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
>>>>>>>> +@subsection xen_module
>>>>>>>>
>>>>>>>> -@deffn Command xen_linux file [arguments]
>>>>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>>>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>>>>>> The rest of the line is passed verbatim as the module command line.
>>>>>>>> +Each module will be identified by the order in which the modules are added.
>>>>>>>> +The 1st module: dom0 kernel image
>>>>>>>> +The 2nd module: dom0 ramdisk
>>>>>>>> +All subsequent modules: UNKNOW
>>>>>>>> @end deffn
>>>>>>>
>>>>>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>>>>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>>>>>
>>>>>> Now , Xen detect module type by the order. (at least on ARM64).
>>>>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>>>>>> nothing to do with i386.
>>>>>>
>>>>>
>>>>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
>>>>
>>>> Oh, did you mean Wei Liu's patch?
>>>>
>>>> I guess XSM may land as the third module (or the module after linux
>>>> kernel, if you don't have initrd)
>>>>
>>>> Yes, agree. (That's actually something to solve on Xen side)
>>>>
>>>> I guess xen can get xsm from a special initrd. so for now there is not
>>>> big problem on xsm.
>>>>
>>>> Please correct me if I misunderstand something. :-)
>>>>
>>>> Thanks!
>>>>
>>>> Back to this patch, is that OK for you, or any suggestion?  Thanks !
>>>>
>>>
>>> Yes, as this is dedicated Xen loader we should document this mandatory
>>> order - first module must be kernel image, second module must be
>>> initrd. I do not think we need to mention possibility to load more
>>> than two modules until there is clear understanding how it can be done
>>> without initrd.
>>
>> Great thanks for your review, I have updated and sent the v3 patchset,
>> Hope I understood your suggestion correctly, Please check.  :-)
>>
> Your patches look fine. Let's wait for Andrei's opinion but I'm leaning
> to commit them

Hi Vladimir,
Great thanks for your review, :-)

Hi Andrei,
Do you have any suggestion for my v3 patchset?
Please let me know if I can do anything to improve it. Thanks! :-)

>>
>>
>
>



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

_______________________________________________
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https://lists.gnu.org/mailman/listinfo/grub-devel

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Fu Wei]

On 26 February 2016 at 22:03, Vladimir 'φ-coder/phcoder' Serbinenko
<phcoder@gmail.com> wrote:
> On 26.02.2016 12:15, Fu Wei wrote:
>> Hi Andrei,
>>
>> On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>>> On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
>>>>>>>> +@subsection xen_module
>>>>>>>>
>>>>>>>> -@deffn Command xen_linux file [arguments]
>>>>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>>>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>>>>>> The rest of the line is passed verbatim as the module command line.
>>>>>>>> +Each module will be identified by the order in which the modules are added.
>>>>>>>> +The 1st module: dom0 kernel image
>>>>>>>> +The 2nd module: dom0 ramdisk
>>>>>>>> +All subsequent modules: UNKNOW
>>>>>>>> @end deffn
>>>>>>>
>>>>>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>>>>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>>>>>
>>>>>> Now , Xen detect module type by the order. (at least on ARM64).
>>>>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>>>>>> nothing to do with i386.
>>>>>>
>>>>>
>>>>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
>>>>
>>>> Oh, did you mean Wei Liu's patch?
>>>>
>>>> I guess XSM may land as the third module (or the module after linux
>>>> kernel, if you don't have initrd)
>>>>
>>>> Yes, agree. (That's actually something to solve on Xen side)
>>>>
>>>> I guess xen can get xsm from a special initrd. so for now there is not
>>>> big problem on xsm.
>>>>
>>>> Please correct me if I misunderstand something. :-)
>>>>
>>>> Thanks!
>>>>
>>>> Back to this patch, is that OK for you, or any suggestion?  Thanks !
>>>>
>>>
>>> Yes, as this is dedicated Xen loader we should document this mandatory
>>> order - first module must be kernel image, second module must be
>>> initrd. I do not think we need to mention possibility to load more
>>> than two modules until there is clear understanding how it can be done
>>> without initrd.
>>
>> Great thanks for your review, I have updated and sent the v3 patchset,
>> Hope I understood your suggestion correctly, Please check.  :-)
>>
> Your patches look fine. Let's wait for Andrei's opinion but I'm leaning
> to commit them

Hi Vladimir,
Great thanks for your review, :-)

Hi Andrei,
Do you have any suggestion for my v3 patchset?
Please let me know if I can do anything to improve it. Thanks! :-)

>>
>>
>
>



-- 
Best regards,

Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Konrad Rzeszutek Wilk]

On Fri, Feb 26, 2016 at 07:15:52PM +0800, Fu Wei wrote:
> Hi Andrei,
> 
> On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
> > On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
> >>>>>> +@subsection xen_module
> >>>>>>
> >>>>>> -@deffn Command xen_linux file [arguments]
> >>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
> >>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
> >>>>>> +Load a module for xen hypervisor at the booting process of xen.
> >>>>>> The rest of the line is passed verbatim as the module command line.
> >>>>>> +Each module will be identified by the order in which the modules are added.
> >>>>>> +The 1st module: dom0 kernel image
> >>>>>> +The 2nd module: dom0 ramdisk
> >>>>>> +All subsequent modules: UNKNOW
> >>>>>> @end deffn
> >>>>>
> >>>>> Hmm ... from previous discussion I gathered that Xen can detect module
> >>>>> type. What if there is no initrd for dom0? How can subsequent modules be
> >>>>
> >>>> Now , Xen detect module type by the order. (at least on ARM64).
> >>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
> >>>> nothing to do with i386.
> >>>>
> >>>
> >>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
> >>
> >> Oh, did you mean Wei Liu's patch?
> >>
> >> I guess XSM may land as the third module (or the module after linux
> >> kernel, if you don't have initrd)
> >>
> >> Yes, agree. (That's actually something to solve on Xen side)
> >>
> >> I guess xen can get xsm from a special initrd. so for now there is not
> >> big problem on xsm.
> >>
> >> Please correct me if I misunderstand something. :-)
> >>
> >> Thanks!
> >>
> >> Back to this patch, is that OK for you, or any suggestion?  Thanks !
> >>
> >
> > Yes, as this is dedicated Xen loader we should document this mandatory
> > order - first module must be kernel image, second module must be
> > initrd. I do not think we need to mention possibility to load more
> > than two modules until there is clear understanding how it can be done
> > without initrd.
> 
> Great thanks for your review, I have updated and sent the v3 patchset,
> Hope I understood your suggestion correctly, Please check.  :-)

What if the initrd is catted to the kernel image (which you can
do on x86)? And then the 1st module is your XSM?

Is this .. order dependency written somewhere in a document? In the
Xen code-base that is?


_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Andrei Borzenkov]

27.02.2016 23:33, Konrad Rzeszutek Wilk пишет:
> On Fri, Feb 26, 2016 at 07:15:52PM +0800, Fu Wei wrote:
>> Hi Andrei,
>>
>> On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>>> On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
>>>>>>>> +@subsection xen_module
>>>>>>>>
>>>>>>>> -@deffn Command xen_linux file [arguments]
>>>>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>>>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>>>>>> The rest of the line is passed verbatim as the module command line.
>>>>>>>> +Each module will be identified by the order in which the modules are added.
>>>>>>>> +The 1st module: dom0 kernel image
>>>>>>>> +The 2nd module: dom0 ramdisk
>>>>>>>> +All subsequent modules: UNKNOW
>>>>>>>> @end deffn
>>>>>>>
>>>>>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>>>>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>>>>>
>>>>>> Now , Xen detect module type by the order. (at least on ARM64).
>>>>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>>>>>> nothing to do with i386.
>>>>>>
>>>>>
>>>>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
>>>>
>>>> Oh, did you mean Wei Liu's patch?
>>>>
>>>> I guess XSM may land as the third module (or the module after linux
>>>> kernel, if you don't have initrd)
>>>>
>>>> Yes, agree. (That's actually something to solve on Xen side)
>>>>
>>>> I guess xen can get xsm from a special initrd. so for now there is not
>>>> big problem on xsm.
>>>>
>>>> Please correct me if I misunderstand something. :-)
>>>>
>>>> Thanks!
>>>>
>>>> Back to this patch, is that OK for you, or any suggestion?  Thanks !
>>>>
>>>
>>> Yes, as this is dedicated Xen loader we should document this mandatory
>>> order - first module must be kernel image, second module must be
>>> initrd. I do not think we need to mention possibility to load more
>>> than two modules until there is clear understanding how it can be done
>>> without initrd.
>>
>> Great thanks for your review, I have updated and sent the v3 patchset,
>> Hope I understood your suggestion correctly, Please check.  :-)
> 
> What if the initrd is catted to the kernel image (which you can
> do on x86)? And then the 1st module is your XSM?
> 

On x86 Xen can detect microcode and xsm modules; the first unknown
module after that is assumed to be initrd (dom0 kernel always must be
the very first module provided).

On arm there is no detection - module type is taken from FDT; if no
module type is provided, the first unknown module is assumed to be
kernel, the second - initrd.

See also http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00333.html

> Is this .. order dependency written somewhere in a document? In the
> Xen code-base that is?
> 


_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Andrei Borzenkov]

27.02.2016 23:33, Konrad Rzeszutek Wilk пишет:
> On Fri, Feb 26, 2016 at 07:15:52PM +0800, Fu Wei wrote:
>> Hi Andrei,
>>
>> On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>>> On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
>>>>>>>> +@subsection xen_module
>>>>>>>>
>>>>>>>> -@deffn Command xen_linux file [arguments]
>>>>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>>>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>>>>>> The rest of the line is passed verbatim as the module command line.
>>>>>>>> +Each module will be identified by the order in which the modules are added.
>>>>>>>> +The 1st module: dom0 kernel image
>>>>>>>> +The 2nd module: dom0 ramdisk
>>>>>>>> +All subsequent modules: UNKNOW
>>>>>>>> @end deffn
>>>>>>>
>>>>>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>>>>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>>>>>
>>>>>> Now , Xen detect module type by the order. (at least on ARM64).
>>>>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>>>>>> nothing to do with i386.
>>>>>>
>>>>>
>>>>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
>>>>
>>>> Oh, did you mean Wei Liu's patch?
>>>>
>>>> I guess XSM may land as the third module (or the module after linux
>>>> kernel, if you don't have initrd)
>>>>
>>>> Yes, agree. (That's actually something to solve on Xen side)
>>>>
>>>> I guess xen can get xsm from a special initrd. so for now there is not
>>>> big problem on xsm.
>>>>
>>>> Please correct me if I misunderstand something. :-)
>>>>
>>>> Thanks!
>>>>
>>>> Back to this patch, is that OK for you, or any suggestion?  Thanks !
>>>>
>>>
>>> Yes, as this is dedicated Xen loader we should document this mandatory
>>> order - first module must be kernel image, second module must be
>>> initrd. I do not think we need to mention possibility to load more
>>> than two modules until there is clear understanding how it can be done
>>> without initrd.
>>
>> Great thanks for your review, I have updated and sent the v3 patchset,
>> Hope I understood your suggestion correctly, Please check.  :-)
> 
> What if the initrd is catted to the kernel image (which you can
> do on x86)? And then the 1st module is your XSM?
> 

On x86 Xen can detect microcode and xsm modules; the first unknown
module after that is assumed to be initrd (dom0 kernel always must be
the very first module provided).

On arm there is no detection - module type is taken from FDT; if no
module type is provided, the first unknown module is assumed to be
kernel, the second - initrd.

See also http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00333.html

> Is this .. order dependency written somewhere in a document? In the
> Xen code-base that is?
> 

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Konrad Rzeszutek Wilk]

On Sun, Feb 28, 2016 at 08:10:33AM +0300, Andrei Borzenkov wrote:
> 27.02.2016 23:33, Konrad Rzeszutek Wilk пишет:
> > On Fri, Feb 26, 2016 at 07:15:52PM +0800, Fu Wei wrote:
> >> Hi Andrei,
> >>
> >> On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
> >>> On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
> >>>>>>>> +@subsection xen_module
> >>>>>>>>
> >>>>>>>> -@deffn Command xen_linux file [arguments]
> >>>>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
> >>>>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
> >>>>>>>> +Load a module for xen hypervisor at the booting process of xen.
> >>>>>>>> The rest of the line is passed verbatim as the module command line.
> >>>>>>>> +Each module will be identified by the order in which the modules are added.
> >>>>>>>> +The 1st module: dom0 kernel image
> >>>>>>>> +The 2nd module: dom0 ramdisk
> >>>>>>>> +All subsequent modules: UNKNOW
> >>>>>>>> @end deffn
> >>>>>>>
> >>>>>>> Hmm ... from previous discussion I gathered that Xen can detect module
> >>>>>>> type. What if there is no initrd for dom0? How can subsequent modules be
> >>>>>>
> >>>>>> Now , Xen detect module type by the order. (at least on ARM64).
> >>>>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
> >>>>>> nothing to do with i386.
> >>>>>>
> >>>>>
> >>>>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
> >>>>
> >>>> Oh, did you mean Wei Liu's patch?
> >>>>
> >>>> I guess XSM may land as the third module (or the module after linux
> >>>> kernel, if you don't have initrd)
> >>>>
> >>>> Yes, agree. (That's actually something to solve on Xen side)
> >>>>
> >>>> I guess xen can get xsm from a special initrd. so for now there is not
> >>>> big problem on xsm.
> >>>>
> >>>> Please correct me if I misunderstand something. :-)
> >>>>
> >>>> Thanks!
> >>>>
> >>>> Back to this patch, is that OK for you, or any suggestion?  Thanks !
> >>>>
> >>>
> >>> Yes, as this is dedicated Xen loader we should document this mandatory
> >>> order - first module must be kernel image, second module must be
> >>> initrd. I do not think we need to mention possibility to load more
> >>> than two modules until there is clear understanding how it can be done
> >>> without initrd.
> >>
> >> Great thanks for your review, I have updated and sent the v3 patchset,
> >> Hope I understood your suggestion correctly, Please check.  :-)
> > 
> > What if the initrd is catted to the kernel image (which you can
> > do on x86)? And then the 1st module is your XSM?
> > 
> 
> On x86 Xen can detect microcode and xsm modules; the first unknown

'can'. If you use 'ucode=scan' on the Xen command line. Otherwise it has
no clue.

It actually would be just much nicer if Multiboot2 had some tag describing
this and Xen (or any other OS) could just parse it like that. But that is
just hand-waving, nice-to-do.


> module after that is assumed to be initrd (dom0 kernel always must be
> the very first module provided).

That is true.
> 
> On arm there is no detection - module type is taken from FDT; if no
> module type is provided, the first unknown module is assumed to be
> kernel, the second - initrd.
> 
> See also http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00333.html
> 
> > Is this .. order dependency written somewhere in a document? In the
> > Xen code-base that is?
> > 
> 

_______________________________________________
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Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel

Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Andrei Borzenkov]

29.02.2016 17:41, Konrad Rzeszutek Wilk пишет:
> On Sun, Feb 28, 2016 at 08:10:33AM +0300, Andrei Borzenkov wrote:
>> 27.02.2016 23:33, Konrad Rzeszutek Wilk пишет:
>>> On Fri, Feb 26, 2016 at 07:15:52PM +0800, Fu Wei wrote:
>>>> Hi Andrei,
>>>>
>>>> On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>>>>> On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
>>>>>>>>>> +@subsection xen_module
>>>>>>>>>>
>>>>>>>>>> -@deffn Command xen_linux file [arguments]
>>>>>>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>>>>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>>>>>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>>>>>>>> The rest of the line is passed verbatim as the module command line.
>>>>>>>>>> +Each module will be identified by the order in which the modules are added.
>>>>>>>>>> +The 1st module: dom0 kernel image
>>>>>>>>>> +The 2nd module: dom0 ramdisk
>>>>>>>>>> +All subsequent modules: UNKNOW
>>>>>>>>>> @end deffn
>>>>>>>>>
>>>>>>>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>>>>>>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>>>>>>>
>>>>>>>> Now , Xen detect module type by the order. (at least on ARM64).
>>>>>>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>>>>>>>> nothing to do with i386.
>>>>>>>>
>>>>>>>
>>>>>>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
>>>>>>
>>>>>> Oh, did you mean Wei Liu's patch?
>>>>>>
>>>>>> I guess XSM may land as the third module (or the module after linux
>>>>>> kernel, if you don't have initrd)
>>>>>>
>>>>>> Yes, agree. (That's actually something to solve on Xen side)
>>>>>>
>>>>>> I guess xen can get xsm from a special initrd. so for now there is not
>>>>>> big problem on xsm.
>>>>>>
>>>>>> Please correct me if I misunderstand something. :-)
>>>>>>
>>>>>> Thanks!
>>>>>>
>>>>>> Back to this patch, is that OK for you, or any suggestion?  Thanks !
>>>>>>
>>>>>
>>>>> Yes, as this is dedicated Xen loader we should document this mandatory
>>>>> order - first module must be kernel image, second module must be
>>>>> initrd. I do not think we need to mention possibility to load more
>>>>> than two modules until there is clear understanding how it can be done
>>>>> without initrd.
>>>>
>>>> Great thanks for your review, I have updated and sent the v3 patchset,
>>>> Hope I understood your suggestion correctly, Please check.  :-)
>>>
>>> What if the initrd is catted to the kernel image (which you can
>>> do on x86)? And then the 1st module is your XSM?
>>>
>>
>> On x86 Xen can detect microcode and xsm modules; the first unknown
> 
> 'can'. If you use 'ucode=scan' on the Xen command line. Otherwise it has
> no clue.
> 

You can also pass ucode=N where N is module number ... but it goes
off-topic. The current state is - it turned out that on ARM Xen is
capable to "detect" only two types of modules - dom0 kernel and dom0
initrd. The fact is that Xen on ARM has at least one more module type
and it is not possible to reliably load it with current interface.

> It actually would be just much nicer if Multiboot2 had some tag describing
> this and Xen (or any other OS) could just parse it like that. But that is
> just hand-waving, nice-to-do.
> 

It was decided that multiboot2 will not be used, and initial interface
did pass module types from GRUB to Xen via FDT, but then it was changed
to generic xen_module with explicit type specification.

Personally I think that leaving detection of how to use module should be
left to loaded program, and that modules should include enough
information so that this can be done.

> 
>> module after that is assumed to be initrd (dom0 kernel always must be
>> the very first module provided).
> 
> That is true.
>>
>> On arm there is no detection - module type is taken from FDT; if no
>> module type is provided, the first unknown module is assumed to be
>> kernel, the second - initrd.
>>
>> See also http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00333.html
>>
>>> Is this .. order dependency written somewhere in a document? In the
>>> Xen code-base that is?
>>>
>>


_______________________________________________
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Re: [PATCH v2 4/4] arm64: update the introduction of xen boot commands in docs/grub.texi

[Andrei Borzenkov]

29.02.2016 17:41, Konrad Rzeszutek Wilk пишет:
> On Sun, Feb 28, 2016 at 08:10:33AM +0300, Andrei Borzenkov wrote:
>> 27.02.2016 23:33, Konrad Rzeszutek Wilk пишет:
>>> On Fri, Feb 26, 2016 at 07:15:52PM +0800, Fu Wei wrote:
>>>> Hi Andrei,
>>>>
>>>> On 26 February 2016 at 18:50, Andrei Borzenkov <arvidjaar@gmail.com> wrote:
>>>>> On Fri, Feb 26, 2016 at 8:59 AM, Fu Wei <fu.wei@linaro.org> wrote:
>>>>>>>>>> +@subsection xen_module
>>>>>>>>>>
>>>>>>>>>> -@deffn Command xen_linux file [arguments]
>>>>>>>>>> -Load a dom0 kernel image for xen hypervisor at the booting process of xen.
>>>>>>>>>> +@deffn Command xen_module [--nounzip] file [arguments]
>>>>>>>>>> +Load a module for xen hypervisor at the booting process of xen.
>>>>>>>>>> The rest of the line is passed verbatim as the module command line.
>>>>>>>>>> +Each module will be identified by the order in which the modules are added.
>>>>>>>>>> +The 1st module: dom0 kernel image
>>>>>>>>>> +The 2nd module: dom0 ramdisk
>>>>>>>>>> +All subsequent modules: UNKNOW
>>>>>>>>>> @end deffn
>>>>>>>>>
>>>>>>>>> Hmm ... from previous discussion I gathered that Xen can detect module
>>>>>>>>> type. What if there is no initrd for dom0? How can subsequent modules be
>>>>>>>>
>>>>>>>> Now , Xen detect module type by the order. (at least on ARM64).
>>>>>>>> I think i386 is using Multiboot(2) protocol, so maybe this order is
>>>>>>>> nothing to do with i386.
>>>>>>>>
>>>>>>>
>>>>>>> Then we have obvious problem with your XSM patch (http://savannah.gnu.org/bugs/?43420) - XSM may land as the first module. That's actually something to solve on Xen side I think. It's just that so far we had just kernel and initrd, so that was non issue.
>>>>>>
>>>>>> Oh, did you mean Wei Liu's patch?
>>>>>>
>>>>>> I guess XSM may land as the third module (or the module after linux
>>>>>> kernel, if you don't have initrd)
>>>>>>
>>>>>> Yes, agree. (That's actually something to solve on Xen side)
>>>>>>
>>>>>> I guess xen can get xsm from a special initrd. so for now there is not
>>>>>> big problem on xsm.
>>>>>>
>>>>>> Please correct me if I misunderstand something. :-)
>>>>>>
>>>>>> Thanks!
>>>>>>
>>>>>> Back to this patch, is that OK for you, or any suggestion?  Thanks !
>>>>>>
>>>>>
>>>>> Yes, as this is dedicated Xen loader we should document this mandatory
>>>>> order - first module must be kernel image, second module must be
>>>>> initrd. I do not think we need to mention possibility to load more
>>>>> than two modules until there is clear understanding how it can be done
>>>>> without initrd.
>>>>
>>>> Great thanks for your review, I have updated and sent the v3 patchset,
>>>> Hope I understood your suggestion correctly, Please check.  :-)
>>>
>>> What if the initrd is catted to the kernel image (which you can
>>> do on x86)? And then the 1st module is your XSM?
>>>
>>
>> On x86 Xen can detect microcode and xsm modules; the first unknown
> 
> 'can'. If you use 'ucode=scan' on the Xen command line. Otherwise it has
> no clue.
> 

You can also pass ucode=N where N is module number ... but it goes
off-topic. The current state is - it turned out that on ARM Xen is
capable to "detect" only two types of modules - dom0 kernel and dom0
initrd. The fact is that Xen on ARM has at least one more module type
and it is not possible to reliably load it with current interface.

> It actually would be just much nicer if Multiboot2 had some tag describing
> this and Xen (or any other OS) could just parse it like that. But that is
> just hand-waving, nice-to-do.
> 

It was decided that multiboot2 will not be used, and initial interface
did pass module types from GRUB to Xen via FDT, but then it was changed
to generic xen_module with explicit type specification.

Personally I think that leaving detection of how to use module should be
left to loaded program, and that modules should include enough
information so that this can be done.

> 
>> module after that is assumed to be initrd (dom0 kernel always must be
>> the very first module provided).
> 
> That is true.
>>
>> On arm there is no detection - module type is taken from FDT; if no
>> module type is provided, the first unknown module is assumed to be
>> kernel, the second - initrd.
>>
>> See also http://lists.gnu.org/archive/html/grub-devel/2016-02/msg00333.html
>>
>>> Is this .. order dependency written somewhere in a document? In the
>>> Xen code-base that is?
>>>
>>