[PATCH 4.15 0/2] Start 4.15 changelog

[PATCH 4.15 0/2] Start 4.15 changelog

[Ian Jackson]

The administriva parts of this (1/, 2/) is a little belated.

For for the substance 3/ I have information from SUPPORT.md.  There is
much other information to put here but right now there are several
blockers in tree and I don't want to distract from fixing them.

I had a look through the git logs but it's really hard to see the wood
for the trees.  I will go and diff some docs.

If anyone feels like sending me updates for CHANGELOG.md that would be
welcome, but I will send out a further call for contributions later.

Ian Jackson (3):
  MAINTAINERS: Make myself the owner of the changelog
  CHANGELOG.md: Clear out 4.14 stuff and start 4.15 info
  CHANGELOG.md: Glean some information from SUPPORT.md

 CHANGELOG.md | 33 +++++++++------------------------
 MAINTAINERS  |  2 +-
 2 files changed, 10 insertions(+), 25 deletions(-)

-- 
2.20.1

[PATCH 4.15 1/3] MAINTAINERS: Make myself the owner of the changelog

[Ian Jackson]

Signed-off-by: Ian Jackson <iwj@xenproject.org>
---
 MAINTAINERS | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 3a5c481543..6a7fa8717e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -256,7 +256,7 @@ S:	Supported
 F:	xen/drivers/passthrough/arm/smmu-v3.c
 
 Change Log
-M:	Paul Durrant <paul@xen.org>
+M:	Ian Jackson <iwj@xenproject.org>
 R:	Community Manager <community.manager@xenproject.org>
 S:	Maintained
 F:	CHANGELOG.md
-- 
2.20.1

Re: [PATCH 4.15 1/3] MAINTAINERS: Make myself the owner of the changelog

[Jan Beulich]

On 09.03.2021 15:50, Ian Jackson wrote:
> Signed-off-by: Ian Jackson <iwj@xenproject.org>

I don't suppose this kind of a change needs it, but just in case:
Acked-by: Jan Beulich <jbeulich@suse.com>

Jan

> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -256,7 +256,7 @@ S:	Supported
>  F:	xen/drivers/passthrough/arm/smmu-v3.c
>  
>  Change Log
> -M:	Paul Durrant <paul@xen.org>
> +M:	Ian Jackson <iwj@xenproject.org>
>  R:	Community Manager <community.manager@xenproject.org>
>  S:	Maintained
>  F:	CHANGELOG.md
> 

Re: [PATCH 4.15 1/3] MAINTAINERS: Make myself the owner of the changelog

[Paul Durrant]

On 09/03/2021 14:50, Ian Jackson wrote:
> Signed-off-by: Ian Jackson <iwj@xenproject.org>

Perhaps we need a release.manager@xenproject.org alias that can be 
passed along. Anyway...

Acked-by: Paul Durrant <paul@xen.org>

> ---
>   MAINTAINERS | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 3a5c481543..6a7fa8717e 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -256,7 +256,7 @@ S:	Supported
>   F:	xen/drivers/passthrough/arm/smmu-v3.c
>   
>   Change Log
> -M:	Paul Durrant <paul@xen.org>
> +M:	Ian Jackson <iwj@xenproject.org>
>   R:	Community Manager <community.manager@xenproject.org>
>   S:	Maintained
>   F:	CHANGELOG.md
> 

[PATCH 4.15 2/3] CHANGELOG.md: Clear out 4.14 stuff and start 4.15 info

[Ian Jackson]

Signed-off-by: Ian Jackson <iwj@xenproject.org>
---
 CHANGELOG.md | 27 +--------------------------
 1 file changed, 1 insertion(+), 26 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c3d3c791d..4ecd157a35 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,31 +6,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## [Unreleased](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog)
 
-### Added
- - This file and MAINTAINERS entry.
- - Use x2APIC mode whenever available, regardless of interrupt remapping
-   support.
- - Performance improvements to guest assisted TLB flushes, either when using
-   the Xen hypercall interface or the viridian one.
- - Assorted pvshim performance and scalability improvements plus some bug
-   fixes.
- - Hypervisor framework to ease porting Xen to run on hypervisors.
- - Initial support to run on Hyper-V.
- - Initial hypervisor file system (hypfs) support.
- - libxl support for running qemu-xen device model in a linux stubdomain.
- - New 'domid_policy', allowing domain-ids to be randomly chosen.
- - Option to preserve domain-id across migrate or save+restore.
- - Support in kdd for initial KD protocol handshake for Win 7, 8 and 10 (64 bit).
- - Tech preview support for Control-flow Execution Technology, with Xen using
-   Supervisor Shadow Stacks for its own protection.
-
-### Changed
- - The CPUID data seen by a guest on boot is now moved in the migration
-   stream.  A guest migrating between non-identical hardware will now no
-   longer observe details such as Family/Model/Stepping, Cache, etc changing.
-   An administrator still needs to take care to ensure the features visible to
-   the guest at boot are compatible with anywhere it might migrate.
-
-## [4.13.0](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.13.0) - 2019-12-17
+## [4.14.0](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.14.0) - 2020-07-23
 
 > Pointer to release from which CHANGELOG tracking starts
-- 
2.20.1

Re: [PATCH 4.15 2/3] CHANGELOG.md: Clear out 4.14 stuff and start 4.15 info

[Jan Beulich]

On 09.03.2021 15:50, Ian Jackson wrote:
> Signed-off-by: Ian Jackson <iwj@xenproject.org>
> ---
>  CHANGELOG.md | 27 +--------------------------
>  1 file changed, 1 insertion(+), 26 deletions(-)
> 
> diff --git a/CHANGELOG.md b/CHANGELOG.md
> index 5c3d3c791d..4ecd157a35 100644
> --- a/CHANGELOG.md
> +++ b/CHANGELOG.md
> @@ -6,31 +6,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>  
>  ## [Unreleased](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog)
>  
> -### Added
> - - This file and MAINTAINERS entry.
> - - Use x2APIC mode whenever available, regardless of interrupt remapping
> -   support.
> - - Performance improvements to guest assisted TLB flushes, either when using
> -   the Xen hypercall interface or the viridian one.
> - - Assorted pvshim performance and scalability improvements plus some bug
> -   fixes.
> - - Hypervisor framework to ease porting Xen to run on hypervisors.
> - - Initial support to run on Hyper-V.
> - - Initial hypervisor file system (hypfs) support.
> - - libxl support for running qemu-xen device model in a linux stubdomain.
> - - New 'domid_policy', allowing domain-ids to be randomly chosen.
> - - Option to preserve domain-id across migrate or save+restore.
> - - Support in kdd for initial KD protocol handshake for Win 7, 8 and 10 (64 bit).
> - - Tech preview support for Control-flow Execution Technology, with Xen using
> -   Supervisor Shadow Stacks for its own protection.
> -
> -### Changed
> - - The CPUID data seen by a guest on boot is now moved in the migration
> -   stream.  A guest migrating between non-identical hardware will now no
> -   longer observe details such as Family/Model/Stepping, Cache, etc changing.
> -   An administrator still needs to take care to ensure the features visible to
> -   the guest at boot are compatible with anywhere it might migrate.
> -
> -## [4.13.0](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.13.0) - 2019-12-17
> +## [4.14.0](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.14.0) - 2020-07-23

Was the plan here really to remove old information? I'd have expected
you to add the one line you do add (perhaps together with empty
"### Added" and "### Changed" sections) between [Unreleased] and the
section you remove.

Jan

Re: [PATCH 4.15 2/3] CHANGELOG.md: Clear out 4.14 stuff and start 4.15 info

[Ian Jackson]

Jan Beulich writes ("Re: [PATCH 4.15 2/3] CHANGELOG.md: Clear out 4.14 stuff and start 4.15 info"):
...
> Was the plan here really to remove old information? I'd have expected
> you to add the one line you do add (perhaps together with empty
> "### Added" and "### Changed" sections) between [Unreleased] and the
> section you remove.

Hrm.  Interesting.  Maybe you are right.  I'm new at this :-).

Ian.

[PATCH 4.15 3/3] CHANGELOG.md: Glean some information from SUPPORT.md

[Ian Jackson]

Signed-off-by: Ian Jackson <iwj@xenproject.org>
---
 CHANGELOG.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4ecd157a35..ccdbb82c2e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## [Unreleased](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog)
 
+## Added / support upgraded
+ - Linux device model stubdomains (Tech Preview)
+ - Xen PV display protocol "backend allocation" mode (Experimental)
+ - ARM IOREQ servers (device emulation etc.) (Tech Preview)
+ - Renesas IPMMU-VMSA (Supported, not security supported; was Tech Preview)
+ - ARM SMMUv3 (Tech Preview)
+
+## Removed / support downgraded
+ - qemu-xen-traditional as host process device model, now "No security support, not recommended".  (Use as stub domain device model is still supported - see SUPPORT.md.)
+
 ## [4.14.0](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog;h=RELEASE-4.14.0) - 2020-07-23
 
 > Pointer to release from which CHANGELOG tracking starts
-- 
2.20.1

Re: [PATCH 4.15 3/3] CHANGELOG.md: Glean some information from SUPPORT.md

[Jan Beulich]

On 09.03.2021 15:50, Ian Jackson wrote:
> --- a/CHANGELOG.md
> +++ b/CHANGELOG.md
> @@ -6,6 +6,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>  
>  ## [Unreleased](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog)
>  
> +## Added / support upgraded
> + - Linux device model stubdomains (Tech Preview)
> + - Xen PV display protocol "backend allocation" mode (Experimental)

This was a downgrade iirc (by XSA-363).

> + - ARM IOREQ servers (device emulation etc.) (Tech Preview)
> + - Renesas IPMMU-VMSA (Supported, not security supported; was Tech Preview)
> + - ARM SMMUv3 (Tech Preview)
> +
> +## Removed / support downgraded
> + - qemu-xen-traditional as host process device model, now "No security support, not recommended".  (Use as stub domain device model is still supported - see SUPPORT.md.)

Nit: This line looks overly long.

Jan

Re: [PATCH 4.15 3/3] CHANGELOG.md: Glean some information from SUPPORT.md

[Jason Andryuk]

On Tue, Mar 9, 2021 at 9:50 AM Ian Jackson <iwj@xenproject.org> wrote:
>
> Signed-off-by: Ian Jackson <iwj@xenproject.org>
> ---
>  CHANGELOG.md | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>
> diff --git a/CHANGELOG.md b/CHANGELOG.md
> index 4ecd157a35..ccdbb82c2e 100644
> --- a/CHANGELOG.md
> +++ b/CHANGELOG.md
> @@ -6,6 +6,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>
>  ## [Unreleased](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog)
>
> +## Added / support upgraded
> + - Linux device model stubdomains (Tech Preview)

This is inaccurate. Linux device model stubdomains went into 4.14, but
SUPPORT.md was only updated in 4.15.  Patch 2/3 removed "libxl support
for running qemu-xen device model in a linux stubdomain."

Regards,
Jason

Re: [PATCH 4.15 3/3] CHANGELOG.md: Glean some information from SUPPORT.md

[George Dunlap]

> On Mar 9, 2021, at 2:50 PM, Ian Jackson <iwj@xenproject.org> wrote:
> 
> Signed-off-by: Ian Jackson <iwj@xenproject.org>
> ---
> CHANGELOG.md | 10 ++++++++++
> 1 file changed, 10 insertions(+)
> 
> diff --git a/CHANGELOG.md b/CHANGELOG.md
> index 4ecd157a35..ccdbb82c2e 100644
> --- a/CHANGELOG.md
> +++ b/CHANGELOG.md
> @@ -6,6 +6,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
> 
> ## [Unreleased](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog)
> 
> +## Added / support upgraded
> + - Linux device model stubdomains (Tech Preview)
> + - Xen PV display protocol "backend allocation" mode (Experimental)
> + - ARM IOREQ servers (device emulation etc.) (Tech Preview)
> + - Renesas IPMMU-VMSA (Supported, not security supported; was Tech Preview)
> + - ARM SMMUv3 (Tech Preview)

Other general things I’m seeing in the tree (may need both SUPPORT.md and changelog updates):

* Support for zstd-compressed dom0 kernels
* vmtrace support
* named PCI devices in xl / libxl
* gnttab stupport for NetBSD
* viridian: Better virtualized IPI support, cpu hotplug, removal of 64-vcpu limit
* x86_emulate support for AVX-VNNI
* Expanded test-cases for x86_emulate
* HVM-specific MM code (shadow, p2m) code factored out into a separate file
* hypfs: Added cpupool directories and controls

Could probably use some input on the naming here from people who have contributed.

 -George

Re: [PATCH 4.15 3/3] CHANGELOG.md: Glean some information from SUPPORT.md

[George Dunlap]

> On Mar 15, 2021, at 1:26 PM, George Dunlap <George.Dunlap@citrix.com> wrote:
> 
> 
> 
>> On Mar 9, 2021, at 2:50 PM, Ian Jackson <iwj@xenproject.org> wrote:
>> 
>> Signed-off-by: Ian Jackson <iwj@xenproject.org>
>> ---
>> CHANGELOG.md | 10 ++++++++++
>> 1 file changed, 10 insertions(+)
>> 
>> diff --git a/CHANGELOG.md b/CHANGELOG.md
>> index 4ecd157a35..ccdbb82c2e 100644
>> --- a/CHANGELOG.md
>> +++ b/CHANGELOG.md
>> @@ -6,6 +6,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>> 
>> ## [Unreleased](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog)
>> 
>> +## Added / support upgraded
>> + - Linux device model stubdomains (Tech Preview)
>> + - Xen PV display protocol "backend allocation" mode (Experimental)
>> + - ARM IOREQ servers (device emulation etc.) (Tech Preview)
>> + - Renesas IPMMU-VMSA (Supported, not security supported; was Tech Preview)
>> + - ARM SMMUv3 (Tech Preview)
> 
> Other general things I’m seeing in the tree (may need both SUPPORT.md and changelog updates):
> 
> * Support for zstd-compressed dom0 kernels
> * vmtrace support
> * named PCI devices in xl / libxl
> * gnttab stupport for NetBSD
> * viridian: Better virtualized IPI support, cpu hotplug, removal of 64-vcpu limit
> * x86_emulate support for AVX-VNNI
> * Expanded test-cases for x86_emulate
> * HVM-specific MM code (shadow, p2m) code factored out into a separate file
> * hypfs: Added cpupool directories and controls

More things:

* Something about MSRs?
* CI loop: Added Ubuntu focal, alpine linux targets
* CI loop: Added “artifacts” support for more efficient testing
* CI loop: Added dom0less, alpine Linux dom0 tests

Again, this is just me trying to guess from skimming the changelog.

 -George

Re: [PATCH 4.15 3/3] CHANGELOG.md: Glean some information from SUPPORT.md

[Jan Beulich]

On 15.03.2021 14:40, George Dunlap wrote:
>> On Mar 15, 2021, at 1:26 PM, George Dunlap <George.Dunlap@citrix.com> wrote:
>>> On Mar 9, 2021, at 2:50 PM, Ian Jackson <iwj@xenproject.org> wrote:
>>>
>>> Signed-off-by: Ian Jackson <iwj@xenproject.org>
>>> ---
>>> CHANGELOG.md | 10 ++++++++++
>>> 1 file changed, 10 insertions(+)
>>>
>>> diff --git a/CHANGELOG.md b/CHANGELOG.md
>>> index 4ecd157a35..ccdbb82c2e 100644
>>> --- a/CHANGELOG.md
>>> +++ b/CHANGELOG.md
>>> @@ -6,6 +6,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>
>>> ## [Unreleased](https://xenbits.xen.org/gitweb/?p=xen.git;a=shortlog)
>>>
>>> +## Added / support upgraded
>>> + - Linux device model stubdomains (Tech Preview)
>>> + - Xen PV display protocol "backend allocation" mode (Experimental)
>>> + - ARM IOREQ servers (device emulation etc.) (Tech Preview)
>>> + - Renesas IPMMU-VMSA (Supported, not security supported; was Tech Preview)
>>> + - ARM SMMUv3 (Tech Preview)
>>
>> Other general things I’m seeing in the tree (may need both SUPPORT.md and changelog updates):
>>
>> * Support for zstd-compressed dom0 kernels
>> * vmtrace support
>> * named PCI devices in xl / libxl
>> * gnttab stupport for NetBSD
>> * viridian: Better virtualized IPI support, cpu hotplug, removal of 64-vcpu limit
>> * x86_emulate support for AVX-VNNI
>> * Expanded test-cases for x86_emulate
>> * HVM-specific MM code (shadow, p2m) code factored out into a separate file
>> * hypfs: Added cpupool directories and controls
> 
> More things:
> 
> * Something about MSRs?

I guess that's rather something which needs mentioning in release notes.

Jan