* [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls
@ 2014-12-17 9:50 Juergen Gross
2014-12-17 9:50 ` [Patch V2 1/4] xen: build infrastructure for generating hypercall depending symbols Juergen Gross
` (4 more replies)
0 siblings, 5 replies; 9+ messages in thread
From: Juergen Gross @ 2014-12-17 9:50 UTC (permalink / raw)
To: linux-kernel, x86, xen-devel, konrad.wilk, david.vrabel,
boris.ostrovsky, tglx, mingo, hpa, mmarek, linux-kbuild
Cc: Juergen Gross
The Xen hypercalls are defined in include/xen/interface/xen.h. There
are some places where for each hypercall a table element is created.
Instead of manually add each hypercall element to these tables use
an auto generated header built during the make process of the kernel.
Changes in V2:
- add "autogenerated" comment to generated header file as suggested by
David Vrabel (patch 1)
- some minor adjustments to patch 4 as suggested by David Vrabel
Juergen Gross (4):
xen: build infrastructure for generating hypercall depending symbols
xen: synchronize include/xen/interface/xen.h with xen
xen: use generated hypervisor symbols in arch/x86/xen/trace.c
xen: use generated hypercall symbols in arch/x86/xen/xen-head.S
arch/x86/syscalls/Makefile | 9 +++++++
arch/x86/xen/trace.c | 50 +++--------------------------------
arch/x86/xen/xen-head.S | 63 +++++++--------------------------------------
include/xen/interface/xen.h | 6 ++++-
scripts/xen-hypercalls.sh | 12 +++++++++
5 files changed, 40 insertions(+), 100 deletions(-)
create mode 100644 scripts/xen-hypercalls.sh
--
2.1.2
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Patch V2 1/4] xen: build infrastructure for generating hypercall depending symbols
2014-12-17 9:50 [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls Juergen Gross
@ 2014-12-17 9:50 ` Juergen Gross
2014-12-17 10:26 ` [Xen-devel] " David Vrabel
2014-12-17 9:50 ` [Patch V2 2/4] xen: synchronize include/xen/interface/xen.h with xen Juergen Gross
` (3 subsequent siblings)
4 siblings, 1 reply; 9+ messages in thread
From: Juergen Gross @ 2014-12-17 9:50 UTC (permalink / raw)
To: linux-kernel, x86, xen-devel, konrad.wilk, david.vrabel,
boris.ostrovsky, tglx, mingo, hpa, mmarek, linux-kbuild
Cc: Juergen Gross
Today there are several places in the kernel which build tables
containing one entry for each possible Xen hypercall. Create an
infrastructure to be able to generate these tables at build time.
Based-on-patch-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/x86/syscalls/Makefile | 9 +++++++++
scripts/xen-hypercalls.sh | 12 ++++++++++++
2 files changed, 21 insertions(+)
create mode 100644 scripts/xen-hypercalls.sh
diff --git a/arch/x86/syscalls/Makefile b/arch/x86/syscalls/Makefile
index 3323c27..a55abb9 100644
--- a/arch/x86/syscalls/Makefile
+++ b/arch/x86/syscalls/Makefile
@@ -19,6 +19,9 @@ quiet_cmd_syshdr = SYSHDR $@
quiet_cmd_systbl = SYSTBL $@
cmd_systbl = $(CONFIG_SHELL) '$(systbl)' $< $@
+quiet_cmd_hypercalls = HYPERCALLS $@
+ cmd_hypercalls = $(CONFIG_SHELL) '$<' $@ $(filter-out $<,$^)
+
syshdr_abi_unistd_32 := i386
$(uapi)/unistd_32.h: $(syscall32) $(syshdr)
$(call if_changed,syshdr)
@@ -47,10 +50,16 @@ $(out)/syscalls_32.h: $(syscall32) $(systbl)
$(out)/syscalls_64.h: $(syscall64) $(systbl)
$(call if_changed,systbl)
+$(out)/xen-hypercalls.h: $(srctree)/scripts/xen-hypercalls.sh
+ $(call if_changed,hypercalls)
+
+$(out)/xen-hypercalls.h: $(srctree)/include/xen/interface/xen*.h
+
uapisyshdr-y += unistd_32.h unistd_64.h unistd_x32.h
syshdr-y += syscalls_32.h
syshdr-$(CONFIG_X86_64) += unistd_32_ia32.h unistd_64_x32.h
syshdr-$(CONFIG_X86_64) += syscalls_64.h
+syshdr-$(CONFIG_XEN) += xen-hypercalls.h
targets += $(uapisyshdr-y) $(syshdr-y)
diff --git a/scripts/xen-hypercalls.sh b/scripts/xen-hypercalls.sh
new file mode 100644
index 0000000..676d922
--- /dev/null
+++ b/scripts/xen-hypercalls.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+out="$1"
+shift
+in="$@"
+
+for i in $in; do
+ eval $CPP $LINUXINCLUDE -dD -imacros "$i" -x c /dev/null
+done | \
+awk '$1 == "#define" && $2 ~ /__HYPERVISOR_[a-z][a-z_0-9]*/ { v[$3] = $2 }
+ END { print "/* auto-generated by scripts/xen-hypercall.sh */"
+ for (i in v) if (!(v[i] in v))
+ print "HYPERCALL("substr(v[i], 14)")"}' | sort -u >$out
--
2.1.2
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [Patch V2 2/4] xen: synchronize include/xen/interface/xen.h with xen
2014-12-17 9:50 [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls Juergen Gross
2014-12-17 9:50 ` [Patch V2 1/4] xen: build infrastructure for generating hypercall depending symbols Juergen Gross
@ 2014-12-17 9:50 ` Juergen Gross
2014-12-17 9:50 ` [Patch V2 3/4] xen: use generated hypervisor symbols in arch/x86/xen/trace.c Juergen Gross
` (2 subsequent siblings)
4 siblings, 0 replies; 9+ messages in thread
From: Juergen Gross @ 2014-12-17 9:50 UTC (permalink / raw)
To: linux-kernel, x86, xen-devel, konrad.wilk, david.vrabel,
boris.ostrovsky, tglx, mingo, hpa, mmarek, linux-kbuild
Cc: Juergen Gross
The header include/xen/interface/xen.h doesn't contain all definitions
from Xen's version of that header. Update it accordingly.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
---
arch/x86/xen/trace.c | 2 +-
include/xen/interface/xen.h | 6 +++++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/x86/xen/trace.c b/arch/x86/xen/trace.c
index 520022d..8296cdf 100644
--- a/arch/x86/xen/trace.c
+++ b/arch/x86/xen/trace.c
@@ -29,7 +29,7 @@ static const char *xen_hypercall_names[] = {
N(vcpu_op),
N(set_segment_base),
N(mmuext_op),
- N(acm_op),
+ N(xsm_op),
N(nmi_op),
N(sched_op),
N(callback_op),
diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h
index f68719f..a483789 100644
--- a/include/xen/interface/xen.h
+++ b/include/xen/interface/xen.h
@@ -67,7 +67,7 @@
#define __HYPERVISOR_vcpu_op 24
#define __HYPERVISOR_set_segment_base 25 /* x86/64 only */
#define __HYPERVISOR_mmuext_op 26
-#define __HYPERVISOR_acm_op 27
+#define __HYPERVISOR_xsm_op 27
#define __HYPERVISOR_nmi_op 28
#define __HYPERVISOR_sched_op 29
#define __HYPERVISOR_callback_op 30
@@ -75,7 +75,11 @@
#define __HYPERVISOR_event_channel_op 32
#define __HYPERVISOR_physdev_op 33
#define __HYPERVISOR_hvm_op 34
+#define __HYPERVISOR_sysctl 35
+#define __HYPERVISOR_domctl 36
+#define __HYPERVISOR_kexec_op 37
#define __HYPERVISOR_tmem_op 38
+#define __HYPERVISOR_xc_reserved_op 39 /* reserved for XenClient */
/* Architecture-specific hypercall definitions. */
#define __HYPERVISOR_arch_0 48
--
2.1.2
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [Patch V2 3/4] xen: use generated hypervisor symbols in arch/x86/xen/trace.c
2014-12-17 9:50 [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls Juergen Gross
2014-12-17 9:50 ` [Patch V2 1/4] xen: build infrastructure for generating hypercall depending symbols Juergen Gross
2014-12-17 9:50 ` [Patch V2 2/4] xen: synchronize include/xen/interface/xen.h with xen Juergen Gross
@ 2014-12-17 9:50 ` Juergen Gross
2014-12-17 9:50 ` [Patch V2 4/4] xen: use generated hypercall symbols in arch/x86/xen/xen-head.S Juergen Gross
2015-01-19 5:07 ` [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls Juergen Gross
4 siblings, 0 replies; 9+ messages in thread
From: Juergen Gross @ 2014-12-17 9:50 UTC (permalink / raw)
To: linux-kernel, x86, xen-devel, konrad.wilk, david.vrabel,
boris.ostrovsky, tglx, mingo, hpa, mmarek, linux-kbuild
Cc: Juergen Gross
Instead of manually list all hypervisor calls in arch/x86/xen/trace.c
use the auto generated list.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
---
arch/x86/xen/trace.c | 50 ++++----------------------------------------------
1 file changed, 4 insertions(+), 46 deletions(-)
diff --git a/arch/x86/xen/trace.c b/arch/x86/xen/trace.c
index 8296cdf..a702ec2 100644
--- a/arch/x86/xen/trace.c
+++ b/arch/x86/xen/trace.c
@@ -1,54 +1,12 @@
#include <linux/ftrace.h>
#include <xen/interface/xen.h>
+#include <xen/interface/xen-mca.h>
-#define N(x) [__HYPERVISOR_##x] = "("#x")"
+#define HYPERCALL(x) [__HYPERVISOR_##x] = "("#x")",
static const char *xen_hypercall_names[] = {
- N(set_trap_table),
- N(mmu_update),
- N(set_gdt),
- N(stack_switch),
- N(set_callbacks),
- N(fpu_taskswitch),
- N(sched_op_compat),
- N(dom0_op),
- N(set_debugreg),
- N(get_debugreg),
- N(update_descriptor),
- N(memory_op),
- N(multicall),
- N(update_va_mapping),
- N(set_timer_op),
- N(event_channel_op_compat),
- N(xen_version),
- N(console_io),
- N(physdev_op_compat),
- N(grant_table_op),
- N(vm_assist),
- N(update_va_mapping_otherdomain),
- N(iret),
- N(vcpu_op),
- N(set_segment_base),
- N(mmuext_op),
- N(xsm_op),
- N(nmi_op),
- N(sched_op),
- N(callback_op),
- N(xenoprof_op),
- N(event_channel_op),
- N(physdev_op),
- N(hvm_op),
-
-/* Architecture-specific hypercall definitions. */
- N(arch_0),
- N(arch_1),
- N(arch_2),
- N(arch_3),
- N(arch_4),
- N(arch_5),
- N(arch_6),
- N(arch_7),
+#include <asm/xen-hypercalls.h>
};
-#undef N
+#undef HYPERCALL
static const char *xen_hypercall_name(unsigned op)
{
--
2.1.2
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [Patch V2 4/4] xen: use generated hypercall symbols in arch/x86/xen/xen-head.S
2014-12-17 9:50 [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls Juergen Gross
` (2 preceding siblings ...)
2014-12-17 9:50 ` [Patch V2 3/4] xen: use generated hypervisor symbols in arch/x86/xen/trace.c Juergen Gross
@ 2014-12-17 9:50 ` Juergen Gross
2014-12-17 10:27 ` [Xen-devel] " David Vrabel
2015-01-19 5:07 ` [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls Juergen Gross
4 siblings, 1 reply; 9+ messages in thread
From: Juergen Gross @ 2014-12-17 9:50 UTC (permalink / raw)
To: linux-kernel, x86, xen-devel, konrad.wilk, david.vrabel,
boris.ostrovsky, tglx, mingo, hpa, mmarek, linux-kbuild
Cc: Juergen Gross
Instead of manually list each hypercall in arch/x86/xen/xen-head.S
use the auto generated symbol list.
This also corrects the wrong address of xen_hypercall_mca which was
located 32 bytes higher than it should.
Symbol addresses have been verified to match the correct ones via
objdump output.
Based-on-patch-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/x86/xen/xen-head.S | 63 ++++++++-----------------------------------------
1 file changed, 10 insertions(+), 53 deletions(-)
diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index 674b2225..8afdfcc 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -12,6 +12,8 @@
#include <xen/interface/elfnote.h>
#include <xen/interface/features.h>
+#include <xen/interface/xen.h>
+#include <xen/interface/xen-mca.h>
#include <asm/xen/interface.h>
#ifdef CONFIG_XEN_PVH
@@ -85,59 +87,14 @@ ENTRY(xen_pvh_early_cpu_init)
.pushsection .text
.balign PAGE_SIZE
ENTRY(hypercall_page)
-#define NEXT_HYPERCALL(x) \
- ENTRY(xen_hypercall_##x) \
- .skip 32
-
-NEXT_HYPERCALL(set_trap_table)
-NEXT_HYPERCALL(mmu_update)
-NEXT_HYPERCALL(set_gdt)
-NEXT_HYPERCALL(stack_switch)
-NEXT_HYPERCALL(set_callbacks)
-NEXT_HYPERCALL(fpu_taskswitch)
-NEXT_HYPERCALL(sched_op_compat)
-NEXT_HYPERCALL(platform_op)
-NEXT_HYPERCALL(set_debugreg)
-NEXT_HYPERCALL(get_debugreg)
-NEXT_HYPERCALL(update_descriptor)
-NEXT_HYPERCALL(ni)
-NEXT_HYPERCALL(memory_op)
-NEXT_HYPERCALL(multicall)
-NEXT_HYPERCALL(update_va_mapping)
-NEXT_HYPERCALL(set_timer_op)
-NEXT_HYPERCALL(event_channel_op_compat)
-NEXT_HYPERCALL(xen_version)
-NEXT_HYPERCALL(console_io)
-NEXT_HYPERCALL(physdev_op_compat)
-NEXT_HYPERCALL(grant_table_op)
-NEXT_HYPERCALL(vm_assist)
-NEXT_HYPERCALL(update_va_mapping_otherdomain)
-NEXT_HYPERCALL(iret)
-NEXT_HYPERCALL(vcpu_op)
-NEXT_HYPERCALL(set_segment_base)
-NEXT_HYPERCALL(mmuext_op)
-NEXT_HYPERCALL(xsm_op)
-NEXT_HYPERCALL(nmi_op)
-NEXT_HYPERCALL(sched_op)
-NEXT_HYPERCALL(callback_op)
-NEXT_HYPERCALL(xenoprof_op)
-NEXT_HYPERCALL(event_channel_op)
-NEXT_HYPERCALL(physdev_op)
-NEXT_HYPERCALL(hvm_op)
-NEXT_HYPERCALL(sysctl)
-NEXT_HYPERCALL(domctl)
-NEXT_HYPERCALL(kexec_op)
-NEXT_HYPERCALL(tmem_op) /* 38 */
-ENTRY(xen_hypercall_rsvr)
- .skip 320
-NEXT_HYPERCALL(mca) /* 48 */
-NEXT_HYPERCALL(arch_1)
-NEXT_HYPERCALL(arch_2)
-NEXT_HYPERCALL(arch_3)
-NEXT_HYPERCALL(arch_4)
-NEXT_HYPERCALL(arch_5)
-NEXT_HYPERCALL(arch_6)
- .balign PAGE_SIZE
+ .skip PAGE_SIZE
+
+#define HYPERCALL(n) \
+ .equ xen_hypercall_##n, hypercall_page + __HYPERVISOR_##n * 32; \
+ .type xen_hypercall_##n, @function; .size xen_hypercall_##n, 32
+#include <asm/xen-hypercalls.h>
+#undef HYPERCALL
+
.popsection
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz "linux")
--
2.1.2
^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: [Xen-devel] [Patch V2 1/4] xen: build infrastructure for generating hypercall depending symbols
2014-12-17 9:50 ` [Patch V2 1/4] xen: build infrastructure for generating hypercall depending symbols Juergen Gross
@ 2014-12-17 10:26 ` David Vrabel
0 siblings, 0 replies; 9+ messages in thread
From: David Vrabel @ 2014-12-17 10:26 UTC (permalink / raw)
To: Juergen Gross, linux-kernel, x86, xen-devel, konrad.wilk,
david.vrabel, boris.ostrovsky, tglx, mingo, hpa, mmarek,
linux-kbuild
On 17/12/14 09:50, Juergen Gross wrote:
> Today there are several places in the kernel which build tables
> containing one entry for each possible Xen hypercall. Create an
> infrastructure to be able to generate these tables at build time.
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
David
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Xen-devel] [Patch V2 4/4] xen: use generated hypercall symbols in arch/x86/xen/xen-head.S
2014-12-17 9:50 ` [Patch V2 4/4] xen: use generated hypercall symbols in arch/x86/xen/xen-head.S Juergen Gross
@ 2014-12-17 10:27 ` David Vrabel
0 siblings, 0 replies; 9+ messages in thread
From: David Vrabel @ 2014-12-17 10:27 UTC (permalink / raw)
To: Juergen Gross, linux-kernel, x86, xen-devel, konrad.wilk,
david.vrabel, boris.ostrovsky, tglx, mingo, hpa, mmarek,
linux-kbuild
On 17/12/14 09:50, Juergen Gross wrote:
> Instead of manually list each hypercall in arch/x86/xen/xen-head.S
> use the auto generated symbol list.
>
> This also corrects the wrong address of xen_hypercall_mca which was
> located 32 bytes higher than it should.
>
> Symbol addresses have been verified to match the correct ones via
> objdump output.
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
David
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls
2014-12-17 9:50 [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls Juergen Gross
` (3 preceding siblings ...)
2014-12-17 9:50 ` [Patch V2 4/4] xen: use generated hypercall symbols in arch/x86/xen/xen-head.S Juergen Gross
@ 2015-01-19 5:07 ` Juergen Gross
2015-01-19 15:42 ` David Vrabel
4 siblings, 1 reply; 9+ messages in thread
From: Juergen Gross @ 2015-01-19 5:07 UTC (permalink / raw)
To: linux-kernel, x86, xen-devel, konrad.wilk, david.vrabel,
boris.ostrovsky, tglx, mingo, hpa, mmarek, linux-kbuild
Hi,
anything missing to take these patches?
Juergen
On 12/17/2014 10:50 AM, Juergen Gross wrote:
> The Xen hypercalls are defined in include/xen/interface/xen.h. There
> are some places where for each hypercall a table element is created.
> Instead of manually add each hypercall element to these tables use
> an auto generated header built during the make process of the kernel.
>
> Changes in V2:
> - add "autogenerated" comment to generated header file as suggested by
> David Vrabel (patch 1)
> - some minor adjustments to patch 4 as suggested by David Vrabel
>
> Juergen Gross (4):
> xen: build infrastructure for generating hypercall depending symbols
> xen: synchronize include/xen/interface/xen.h with xen
> xen: use generated hypervisor symbols in arch/x86/xen/trace.c
> xen: use generated hypercall symbols in arch/x86/xen/xen-head.S
>
> arch/x86/syscalls/Makefile | 9 +++++++
> arch/x86/xen/trace.c | 50 +++--------------------------------
> arch/x86/xen/xen-head.S | 63 +++++++--------------------------------------
> include/xen/interface/xen.h | 6 ++++-
> scripts/xen-hypercalls.sh | 12 +++++++++
> 5 files changed, 40 insertions(+), 100 deletions(-)
> create mode 100644 scripts/xen-hypercalls.sh
>
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls
2015-01-19 5:07 ` [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls Juergen Gross
@ 2015-01-19 15:42 ` David Vrabel
0 siblings, 0 replies; 9+ messages in thread
From: David Vrabel @ 2015-01-19 15:42 UTC (permalink / raw)
To: Juergen Gross, linux-kernel, x86, xen-devel, konrad.wilk,
boris.ostrovsky, tglx, mingo, hpa, mmarek, linux-kbuild
On 19/01/15 05:07, Juergen Gross wrote:
> Hi,
>
> anything missing to take these patches?
Patch #1 needs an x86 maintainer ack.
David
> On 12/17/2014 10:50 AM, Juergen Gross wrote:
>> The Xen hypercalls are defined in include/xen/interface/xen.h. There
>> are some places where for each hypercall a table element is created.
>> Instead of manually add each hypercall element to these tables use
>> an auto generated header built during the make process of the kernel.
>>
>> Changes in V2:
>> - add "autogenerated" comment to generated header file as suggested by
>> David Vrabel (patch 1)
>> - some minor adjustments to patch 4 as suggested by David Vrabel
>>
>> Juergen Gross (4):
>> xen: build infrastructure for generating hypercall depending symbols
>> xen: synchronize include/xen/interface/xen.h with xen
>> xen: use generated hypervisor symbols in arch/x86/xen/trace.c
>> xen: use generated hypercall symbols in arch/x86/xen/xen-head.S
>>
>> arch/x86/syscalls/Makefile | 9 +++++++
>> arch/x86/xen/trace.c | 50 +++--------------------------------
>> arch/x86/xen/xen-head.S | 63
>> +++++++--------------------------------------
>> include/xen/interface/xen.h | 6 ++++-
>> scripts/xen-hypercalls.sh | 12 +++++++++
>> 5 files changed, 40 insertions(+), 100 deletions(-)
>> create mode 100644 scripts/xen-hypercalls.sh
>>
>
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2015-01-19 15:42 UTC | newest]
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2014-12-17 9:50 [Patch V2 0/4] xen: auto-generate symbols for xen hypercalls Juergen Gross
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2014-12-17 10:26 ` [Xen-devel] " David Vrabel
2014-12-17 9:50 ` [Patch V2 2/4] xen: synchronize include/xen/interface/xen.h with xen Juergen Gross
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