[PATCH] CHANGELOG.md: Update for 4.21 release cycle

[PATCH] CHANGELOG.md: Update for 4.21 release cycle

[Oleksii Kurochko]

Signed-off-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>
---
 CHANGELOG.md | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ca1b43b940..5a0902cc3e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
  - Debian Trixie added to CI.  Debian Bullseye retired from CI for RISC-V due
    to the baseline change.
  - Linux based device model stubdomains are now fully supported.
+ - Remove libxenctrl usage from xenstored.
 
  - On x86:
    - Restrict the cache flushing done as a result of guest physical memory map
@@ -21,6 +22,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
    - Allow controlling the MTRR cache attribute of the Xen platform PCI device
      BAR for HVM guests, to improve performance of guests using it to map the
      grant table or foreign memory.
+   - Allow to unflatten DTs.
 
 ### Added
  - Introduce new PDX compression algorithm to cope with Intel Sierra Forest and
@@ -36,11 +38,20 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
    - Support in hvmloader for new SMBIOS tables: 7 (Cache Info), 8 (Port
      Connector), 9 (System Slots), 26 (Voltage Probe), 27 (Cooling Device),
      and 28 (Temperature Probe).
+   - Basic kexec support to Mini-OS for running in PVH mode.
 
  - On Arm:
-    - Ability to enable stack protector
+    - Ability to enable stack protector.
     - GICv3.1 eSPI (Extended Shared Peripheral Interrupts) support for Xen
       and guest domains.
+    - SMMU handling for PCIe passthrough.
+    - R-Car Gen4 PCI host controller support.
+    - SCI SCMI SMC single-agent support.
+    - Initial support for MPU, R82, and R52: reaches the early boot stages.
+
+ - On RISC-V:
+    - Basic UART support and external interrupts (APLIC/IMSIC only) handling
+      for hypervisor mode.
 
 ### Removed
  - On x86:
-- 
2.51.0

Re: [PATCH] CHANGELOG.md: Update for 4.21 release cycle

[Jan Beulich]

On 24.09.2025 11:36, Oleksii Kurochko wrote:
> --- a/CHANGELOG.md
> +++ b/CHANGELOG.md
> @@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>   - Debian Trixie added to CI.  Debian Bullseye retired from CI for RISC-V due
>     to the baseline change.
>   - Linux based device model stubdomains are now fully supported.
> + - Remove libxenctrl usage from xenstored.
>  
>   - On x86:
>     - Restrict the cache flushing done as a result of guest physical memory map
> @@ -21,6 +22,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>     - Allow controlling the MTRR cache attribute of the Xen platform PCI device
>       BAR for HVM guests, to improve performance of guests using it to map the
>       grant table or foreign memory.
> +   - Allow to unflatten DTs.

What is this about? There continues to be no use of DT on x86, so without context
this feels pretty much meaningless to me.

> @@ -36,11 +38,20 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>     - Support in hvmloader for new SMBIOS tables: 7 (Cache Info), 8 (Port
>       Connector), 9 (System Slots), 26 (Voltage Probe), 27 (Cooling Device),
>       and 28 (Temperature Probe).
> +   - Basic kexec support to Mini-OS for running in PVH mode.

Hmm, MiniOS isn't an integral part of a Xen release, so I wonder if such really
belongs here. Yes, I also understand that there's not really anywhere else to
put such.

Jan

Re: [PATCH] CHANGELOG.md: Update for 4.21 release cycle

[Oleksii Kurochko]

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On 9/25/25 8:26 AM, Jan Beulich wrote:
> On 24.09.2025 11:36, Oleksii Kurochko wrote:
>> --- a/CHANGELOG.md
>> +++ b/CHANGELOG.md
>> @@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>    - Debian Trixie added to CI.  Debian Bullseye retired from CI for RISC-V due
>>      to the baseline change.
>>    - Linux based device model stubdomains are now fully supported.
>> + - Remove libxenctrl usage from xenstored.
>>   
>>    - On x86:
>>      - Restrict the cache flushing done as a result of guest physical memory map
>> @@ -21,6 +22,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>      - Allow controlling the MTRR cache attribute of the Xen platform PCI device
>>        BAR for HVM guests, to improve performance of guests using it to map the
>>        grant table or foreign memory.
>> +   - Allow to unflatten DTs.
> What is this about? There continues to be no use of DT on x86, so without context
> this feels pretty much meaningless to me.

I am referring tohttps://lore.kernel.org/xen-devel/20250722000525.7247-1-alejandro.garciavallejo@amd.com/.

>
>> @@ -36,11 +38,20 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>      - Support in hvmloader for new SMBIOS tables: 7 (Cache Info), 8 (Port
>>        Connector), 9 (System Slots), 26 (Voltage Probe), 27 (Cooling Device),
>>        and 28 (Temperature Probe).
>> +   - Basic kexec support to Mini-OS for running in PVH mode.
> Hmm, MiniOS isn't an integral part of a Xen release, so I wonder if such really
> belongs here. Yes, I also understand that there's not really anywhere else to
> put such.

I decided to put it here since we include information about stubdoms in|CHANGELOG.md|,
and MiniOS is related to that.

~ Oleksii

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Re: [PATCH] CHANGELOG.md: Update for 4.21 release cycle

[Jan Beulich]

On 25.09.2025 22:22, Oleksii Kurochko wrote:
> On 9/25/25 8:26 AM, Jan Beulich wrote:
>> On 24.09.2025 11:36, Oleksii Kurochko wrote:
>>> --- a/CHANGELOG.md
>>> +++ b/CHANGELOG.md
>>> @@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>    - Debian Trixie added to CI.  Debian Bullseye retired from CI for RISC-V due
>>>      to the baseline change.
>>>    - Linux based device model stubdomains are now fully supported.
>>> + - Remove libxenctrl usage from xenstored.
>>>   
>>>    - On x86:
>>>      - Restrict the cache flushing done as a result of guest physical memory map
>>> @@ -21,6 +22,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>      - Allow controlling the MTRR cache attribute of the Xen platform PCI device
>>>        BAR for HVM guests, to improve performance of guests using it to map the
>>>        grant table or foreign memory.
>>> +   - Allow to unflatten DTs.
>> What is this about? There continues to be no use of DT on x86, so without context
>> this feels pretty much meaningless to me.
> 
> I am referring tohttps://lore.kernel.org/xen-devel/20250722000525.7247-1-alejandro.garciavallejo@amd.com/.

Sure, but what practical use does this have for anyone using Xen?

>>> @@ -36,11 +38,20 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>      - Support in hvmloader for new SMBIOS tables: 7 (Cache Info), 8 (Port
>>>        Connector), 9 (System Slots), 26 (Voltage Probe), 27 (Cooling Device),
>>>        and 28 (Temperature Probe).
>>> +   - Basic kexec support to Mini-OS for running in PVH mode.
>> Hmm, MiniOS isn't an integral part of a Xen release, so I wonder if such really
>> belongs here. Yes, I also understand that there's not really anywhere else to
>> put such.
> 
> I decided to put it here since we include information about stubdoms in|CHANGELOG.md|,
> and MiniOS is related to that.

Stubdom code is part of the git repo and hence the tarball. MiniOS isn't.

Jan

Re: [PATCH] CHANGELOG.md: Update for 4.21 release cycle

[Juergen Gross]

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On 26.09.25 07:49, Jan Beulich wrote:
> On 25.09.2025 22:22, Oleksii Kurochko wrote:
>> On 9/25/25 8:26 AM, Jan Beulich wrote:
>>> On 24.09.2025 11:36, Oleksii Kurochko wrote:
>>>> --- a/CHANGELOG.md
>>>> +++ b/CHANGELOG.md
>>>> @@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>>     - Debian Trixie added to CI.  Debian Bullseye retired from CI for RISC-V due
>>>>       to the baseline change.
>>>>     - Linux based device model stubdomains are now fully supported.
>>>> + - Remove libxenctrl usage from xenstored.
>>>>    
>>>>     - On x86:
>>>>       - Restrict the cache flushing done as a result of guest physical memory map
>>>> @@ -21,6 +22,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>>       - Allow controlling the MTRR cache attribute of the Xen platform PCI device
>>>>         BAR for HVM guests, to improve performance of guests using it to map the
>>>>         grant table or foreign memory.
>>>> +   - Allow to unflatten DTs.
>>> What is this about? There continues to be no use of DT on x86, so without context
>>> this feels pretty much meaningless to me.
>>
>> I am referring tohttps://lore.kernel.org/xen-devel/20250722000525.7247-1-alejandro.garciavallejo@amd.com/.
> 
> Sure, but what practical use does this have for anyone using Xen?
> 
>>>> @@ -36,11 +38,20 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
>>>>       - Support in hvmloader for new SMBIOS tables: 7 (Cache Info), 8 (Port
>>>>         Connector), 9 (System Slots), 26 (Voltage Probe), 27 (Cooling Device),
>>>>         and 28 (Temperature Probe).
>>>> +   - Basic kexec support to Mini-OS for running in PVH mode.
>>> Hmm, MiniOS isn't an integral part of a Xen release, so I wonder if such really
>>> belongs here. Yes, I also understand that there's not really anywhere else to
>>> put such.
>>
>> I decided to put it here since we include information about stubdoms in|CHANGELOG.md|,
>> and MiniOS is related to that.
> 
> Stubdom code is part of the git repo and hence the tarball. MiniOS isn't.

Right. The kexec support in Mini-OS was primarily added in order to support
PVH xenstore-stubdom live update. This has already been added to the changelog,
so there is no real reason to mention the Mini-OS change here as well.


Juergen

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