[PATCH v2 for-4.15 1/7] Intel Processor Trace Support: Add CHANGELOG.md and SUPPORT.md entries

[PATCH v2 for-4.15 1/7] Intel Processor Trace Support: Add CHANGELOG.md and SUPPORT.md entries

[George Dunlap]

Signed-off-by: George Dunlap <george.dunlap@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Release-acked-by: Ian Jackson <ian.jackson@citrix.com>
---
v2:
 - Added "x86" specifier

CC: Andrew Cooper <andrew.cooper3@citrix.com>
CC: Ian Jackson <ian.jackson@citrix.com>
CC: Tamas K Lengyel <tamas.lengyel@zentific.com>
---
 CHANGELOG.md | 1 +
 SUPPORT.md   | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c407f6bb2f..7f03e85bd7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
  - ARM IOREQ servers (device emulation etc.) (Tech Preview)
  - Renesas IPMMU-VMSA (Supported, not security supported; was Tech Preview)
  - ARM SMMUv3 (Tech Preview)
+ - Intel Processor Trace support (Tech Preview)
 
 ## Removed / support downgraded
 
diff --git a/SUPPORT.md b/SUPPORT.md
index a1efd8fcfd..cd0c09e6a4 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -247,6 +247,13 @@ Export hypervisor coverage data suitable for analysis by gcov or lcov.
 
     Status: Supported, Not security supported
 
+### Processor trace support
+
+Support for using Intel Processor Trace technology to trace guests
+from dom0.
+
+    Status, x86: Tech Preview
+
 ## Memory Management
 
 ### Dynamic memory control
-- 
2.30.2

[PATCH v2 for-4.15 2/7] CHANGELOG.md: Add named PCI devices

[George Dunlap]

Signed-off-by: George Dunlap <george.dunlap@citrix.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Release-acked-by: Ian Jackson <ian.jackson@citrix.com>
---
CC: Ian Jackson <ian.jackson@citrix.com>
CC: Paul Durrant <paul@xen.org>
---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7f03e85bd7..8c89212f14 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
  - Renesas IPMMU-VMSA (Supported, not security supported; was Tech Preview)
  - ARM SMMUv3 (Tech Preview)
  - Intel Processor Trace support (Tech Preview)
+ - Named PCI devices for xl/libxl
 
 ## Removed / support downgraded
 
-- 
2.30.2

[PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support

[George Dunlap]

Signed-off-by: George Dunlap <george.dunlap@citrix.com>
---
v2:
 - domU support also added

CC: Jan Beulich <jbeulich@suse.com>
CC: Ian Jackson <ian.jackson@citrix.com>
CC: Andrew Cooper <andrew.cooper3@citrix.com>
---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8c89212f14..538eae611c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
  - ARM SMMUv3 (Tech Preview)
  - Intel Processor Trace support (Tech Preview)
  - Named PCI devices for xl/libxl
+ - Support for zstd-compressed dom0 and domU kernels
 
 ## Removed / support downgraded
 
-- 
2.30.2

[PATCH v2 for-4.15 4/7] CHANGELOG.md: NetBSD lib/gnttab support

[George Dunlap]

Signed-off-by: George Dunlap <george.dunlap@citrix.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Release-acked-by: Ian Jackson <ian.jackson@citrix.com>
---
CC: Manuel Bouyer <bouyer@netbsd.org>
CC: Ian Jackson <ian.jackson@citrix.com>
CC: Roger Pau Monne <roger.pau@citrix.com>
---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 538eae611c..fdad864a1f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
  - Intel Processor Trace support (Tech Preview)
  - Named PCI devices for xl/libxl
  - Support for zstd-compressed dom0 and domU kernels
+ - Library improvements from NetBSD ports upstreamed
 
 ## Removed / support downgraded
 
-- 
2.30.2

[PATCH v2 for-4.15 5/7] CHANGELOG.md: Add entries for emulation

[George Dunlap]

Signed-off-by: George Dunlap <george.dunlap@citrix.com>
---
CC: Jan Beulich <jbeulich@suse.com>
CC: Ian Jackson <ian.jackson@citrix.com>
---
 CHANGELOG.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index fdad864a1f..62174c8c74 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
  - Named PCI devices for xl/libxl
  - Support for zstd-compressed dom0 and domU kernels
  - Library improvements from NetBSD ports upstreamed
+ - x86_emulate: Support AVX-VNNI instructions
+ - x86_emulate: Expanded testing for several instruction classes
 
 ## Removed / support downgraded
 
-- 
2.30.2

[PATCH v2 for-4.15 6/7] CHANGELOG.md: Add entries for CI loop

[George Dunlap]

Signed-off-by: George Dunlap <george.dunlap@citrix.com>
---
v2:
 - Add dom0 / domU testing for ARM on alpine Linux as well

CC: Wei Liu <wl@xen.org>
CC: Andrew Cooper <andrew.cooper3@citrix.com>
CC: Stefano Stabellini <sstabellini@kernel.org>
CC: Doug Goldstein <cardoe@cardoe.com>
---
 CHANGELOG.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 62174c8c74..c4696e41a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
  - Library improvements from NetBSD ports upstreamed
  - x86_emulate: Support AVX-VNNI instructions
  - x86_emulate: Expanded testing for several instruction classes
+ - CI loop: Add Alpine Linux, Ubuntu Focal targets; drop CentOS 6
+ - CI loop: Add qemu-based dom0 / domU test for ARM
+ - CI loop: Add dom0less aarch64 smoke test
 
 ## Removed / support downgraded
 
-- 
2.30.2

[PATCH v2 for-4.15 7/7] CHANGELOG.md: Make PV shim smaller by factoring out HVM-specific shadow code

[George Dunlap]

Signed-off-by: George Dunlap <george.dunlap@citrix.com>
---
v2:
- Add into the series

CC: Ian Jackson <ian.jackson@citrix.com>
CC: Jan Beulich <jbeulich@suse.com>
CC: Roger Pau Monne <roger.pau@citrix.com>
---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c4696e41a1..9912ea5a8d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
  - CI loop: Add Alpine Linux, Ubuntu Focal targets; drop CentOS 6
  - CI loop: Add qemu-based dom0 / domU test for ARM
  - CI loop: Add dom0less aarch64 smoke test
+ - Factored out HVM-specific shadow code, allowing PV shim to be slimmer
 
 ## Removed / support downgraded
 
-- 
2.30.2

Re: [PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support

[Ian Jackson]

George Dunlap writes ("[PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support"):
> Signed-off-by: George Dunlap <george.dunlap@citrix.com>

Release-Acked-by: Ian Jackson <iwj@xenproject.org>

Re: [PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support

[Ian Jackson]

Ian Jackson writes ("Re: [PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support"):
> George Dunlap writes ("[PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support"):
> > Signed-off-by: George Dunlap <george.dunlap@citrix.com>
> 
> Release-Acked-by: Ian Jackson <iwj@xenproject.org>

Actually, better idea: I hereby give a blanket release ack for
anything in CHANGELOG.md that is committed by the end of Wednesday.

Whatever isn't ready by then I will look properly at.  I expect us to
commit final docs updates early on Tuesday the 6th.  So in practice I
think that means that any input from people who are away for Easter
needs to be finalised before the Easter weekend so that George and I
can get it properly into the tree.

Thanks,
Ian.

Re: [PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support

[Julien Grall]

Hi George,

On Mon, 29 Mar 2021 at 17:15, George Dunlap <george.dunlap@citrix.com> wrote:
> diff --git a/CHANGELOG.md b/CHANGELOG.md
> index 8c89212f14..538eae611c 100644
> --- a/CHANGELOG.md
> +++ b/CHANGELOG.md
> @@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>   - ARM SMMUv3 (Tech Preview)
>   - Intel Processor Trace support (Tech Preview)
>   - Named PCI devices for xl/libxl
> + - Support for zstd-compressed dom0 and domU kernels

Looking at the log, the feature looks x86 only (at least the dom0 part).

Cheers,

Re: [PATCH v2 for-4.15 6/7] CHANGELOG.md: Add entries for CI loop

[Stefano Stabellini]

On Mon, 29 Mar 2021, George Dunlap wrote:
> Signed-off-by: George Dunlap <george.dunlap@citrix.com>

Acked-by: Stefano Stabellini <sstabellini@kernel.org>

> ---
> v2:
>  - Add dom0 / domU testing for ARM on alpine Linux as well
> 
> CC: Wei Liu <wl@xen.org>
> CC: Andrew Cooper <andrew.cooper3@citrix.com>
> CC: Stefano Stabellini <sstabellini@kernel.org>
> CC: Doug Goldstein <cardoe@cardoe.com>
> ---
>  CHANGELOG.md | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/CHANGELOG.md b/CHANGELOG.md
> index 62174c8c74..c4696e41a1 100644
> --- a/CHANGELOG.md
> +++ b/CHANGELOG.md
> @@ -16,6 +16,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>   - Library improvements from NetBSD ports upstreamed
>   - x86_emulate: Support AVX-VNNI instructions
>   - x86_emulate: Expanded testing for several instruction classes
> + - CI loop: Add Alpine Linux, Ubuntu Focal targets; drop CentOS 6
> + - CI loop: Add qemu-based dom0 / domU test for ARM
> + - CI loop: Add dom0less aarch64 smoke test
>  
>  ## Removed / support downgraded
>  
> -- 
> 2.30.2
> 

Re: [PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support

[George Dunlap]

> On Mar 29, 2021, at 7:54 PM, Julien Grall <julien.grall.oss@gmail.com> wrote:
> 
> Hi George,
> 
> On Mon, 29 Mar 2021 at 17:15, George Dunlap <george.dunlap@citrix.com> wrote:
>> diff --git a/CHANGELOG.md b/CHANGELOG.md
>> index 8c89212f14..538eae611c 100644
>> --- a/CHANGELOG.md
>> +++ b/CHANGELOG.md
>> @@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>  - ARM SMMUv3 (Tech Preview)
>>  - Intel Processor Trace support (Tech Preview)
>>  - Named PCI devices for xl/libxl
>> + - Support for zstd-compressed dom0 and domU kernels
> 
> Looking at the log, the feature looks x86 only (at least the dom0 part).

Oh, interesting.  So what about the following?

- Support for zstd-compressed dom0 (x86) and domU kernels

-George

Re: [PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support

[Julien Grall]

On 30/03/2021 11:08, George Dunlap wrote:
> 
> 
>> On Mar 29, 2021, at 7:54 PM, Julien Grall <julien.grall.oss@gmail.com> wrote:
>>
>> Hi George,
>>
>> On Mon, 29 Mar 2021 at 17:15, George Dunlap <george.dunlap@citrix.com> wrote:
>>> diff --git a/CHANGELOG.md b/CHANGELOG.md
>>> index 8c89212f14..538eae611c 100644
>>> --- a/CHANGELOG.md
>>> +++ b/CHANGELOG.md
>>> @@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>   - ARM SMMUv3 (Tech Preview)
>>>   - Intel Processor Trace support (Tech Preview)
>>>   - Named PCI devices for xl/libxl
>>> + - Support for zstd-compressed dom0 and domU kernels
>>
>> Looking at the log, the feature looks x86 only (at least the dom0 part).
> 
> Oh, interesting.  So what about the following?
> 
> - Support for zstd-compressed dom0 (x86) and domU kernels

Sounds fine to me. Note that I haven't tried zstd-compressed for domu 
Kernel on Arm.

Maybe the author (Jan) can confirm whether this was plumbed in common 
libxc code?

Cheers,

-- 
Julien Grall

Re: [PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support

[Jan Beulich]

On 30.03.2021 12:14, Julien Grall wrote:
> 
> 
> On 30/03/2021 11:08, George Dunlap wrote:
>>
>>
>>> On Mar 29, 2021, at 7:54 PM, Julien Grall <julien.grall.oss@gmail.com> wrote:
>>>
>>> Hi George,
>>>
>>> On Mon, 29 Mar 2021 at 17:15, George Dunlap <george.dunlap@citrix.com> wrote:
>>>> diff --git a/CHANGELOG.md b/CHANGELOG.md
>>>> index 8c89212f14..538eae611c 100644
>>>> --- a/CHANGELOG.md
>>>> +++ b/CHANGELOG.md
>>>> @@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>>   - ARM SMMUv3 (Tech Preview)
>>>>   - Intel Processor Trace support (Tech Preview)
>>>>   - Named PCI devices for xl/libxl
>>>> + - Support for zstd-compressed dom0 and domU kernels
>>>
>>> Looking at the log, the feature looks x86 only (at least the dom0 part).
>>
>> Oh, interesting.  So what about the following?
>>
>> - Support for zstd-compressed dom0 (x86) and domU kernels
> 
> Sounds fine to me. Note that I haven't tried zstd-compressed for domu 
> Kernel on Arm.
> 
> Maybe the author (Jan) can confirm whether this was plumbed in common 
> libxc code?

Well, I've followed the model used for other compression methods. I have
no idea what this means or does not mean for Arm; in fact so far I was
under the impression that like in the hypervisor decompression support
was an x86-only feature, but from what you say I conclude I have been
wrong with this.

Jan

Re: [PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support

[Jan Beulich]

On 30.03.2021 12:08, George Dunlap wrote:
>> On Mar 29, 2021, at 7:54 PM, Julien Grall <julien.grall.oss@gmail.com> wrote:
>> On Mon, 29 Mar 2021 at 17:15, George Dunlap <george.dunlap@citrix.com> wrote:
>>> diff --git a/CHANGELOG.md b/CHANGELOG.md
>>> index 8c89212f14..538eae611c 100644
>>> --- a/CHANGELOG.md
>>> +++ b/CHANGELOG.md
>>> @@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>  - ARM SMMUv3 (Tech Preview)
>>>  - Intel Processor Trace support (Tech Preview)
>>>  - Named PCI devices for xl/libxl
>>> + - Support for zstd-compressed dom0 and domU kernels
>>
>> Looking at the log, the feature looks x86 only (at least the dom0 part).
> 
> Oh, interesting.  So what about the following?
> 
> - Support for zstd-compressed dom0 (x86) and domU kernels

Then:
Acked-by: Jan Beulich <jbeulich@suse.com>

Jan

Re: [PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support

[Julien Grall]

On 30/03/2021 11:56, Jan Beulich wrote:
> On 30.03.2021 12:14, Julien Grall wrote:
>>
>>
>> On 30/03/2021 11:08, George Dunlap wrote:
>>>
>>>
>>>> On Mar 29, 2021, at 7:54 PM, Julien Grall <julien.grall.oss@gmail.com> wrote:
>>>>
>>>> Hi George,
>>>>
>>>> On Mon, 29 Mar 2021 at 17:15, George Dunlap <george.dunlap@citrix.com> wrote:
>>>>> diff --git a/CHANGELOG.md b/CHANGELOG.md
>>>>> index 8c89212f14..538eae611c 100644
>>>>> --- a/CHANGELOG.md
>>>>> +++ b/CHANGELOG.md
>>>>> @@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>>>    - ARM SMMUv3 (Tech Preview)
>>>>>    - Intel Processor Trace support (Tech Preview)
>>>>>    - Named PCI devices for xl/libxl
>>>>> + - Support for zstd-compressed dom0 and domU kernels
>>>>
>>>> Looking at the log, the feature looks x86 only (at least the dom0 part).
>>>
>>> Oh, interesting.  So what about the following?
>>>
>>> - Support for zstd-compressed dom0 (x86) and domU kernels
>>
>> Sounds fine to me. Note that I haven't tried zstd-compressed for domu
>> Kernel on Arm.
>>
>> Maybe the author (Jan) can confirm whether this was plumbed in common
>> libxc code?
> 
> Well, I've followed the model used for other compression methods. I have
> no idea what this means or does not mean for Arm; in fact so far I was
> under the impression that like in the hypervisor decompression support
> was an x86-only feature, but from what you say I conclude I have been
> wrong with this.

We support gzip for dom0. For guests, I am not entirely sure what the 
state as I tend to uncompressed kernel every time.

Cheers,

-- 
Julien Grall