Re: Patch "s390/pci: Support mmap() of PCI resources except for ISM devices" has been added to the 6.14-stable tree

Re: Patch "s390/pci: Support mmap() of PCI resources except for ISM devices" has been added to the 6.14-stable tree

[Niklas Schnelle]

On Mon, 2025-04-14 at 06:43 -0400, Sasha Levin wrote:
> This is a note to let you know that I've just added the patch titled
> 
>     s390/pci: Support mmap() of PCI resources except for ISM devices
> 
> to the 6.14-stable tree which can be found at:
>     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> 
> The filename of the patch is:
>      s390-pci-support-mmap-of-pci-resources-except-for-is.patch
> and it can be found in the queue-6.14 subdirectory.
> 
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <stable@vger.kernel.org> know about it.
> 

Hi Sasha,

Including this in stable is fine but if you do please also pick up
commit 41a0926e82f4 ("s390/pci: Fix s390_mmio_read/write syscall page
fault handling") otherwise the mmap() with vfio-pci won't work on
systems that rely on the MMIO syscalls but would already work on those
that have the newer memory I/O feature. Meaning once you have the
mmap() PCI resource suppot the cited commit becomes a relevant fix.

Thanks,
Niklas

Re: Patch "s390/pci: Support mmap() of PCI resources except for ISM devices" has been added to the 6.14-stable tree

[Sasha Levin]

On Wed, Apr 16, 2025 at 01:59:53PM +0200, Niklas Schnelle wrote:
>On Mon, 2025-04-14 at 06:43 -0400, Sasha Levin wrote:
>> This is a note to let you know that I've just added the patch titled
>>
>>     s390/pci: Support mmap() of PCI resources except for ISM devices
>>
>> to the 6.14-stable tree which can be found at:
>>     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
>>
>> The filename of the patch is:
>>      s390-pci-support-mmap-of-pci-resources-except-for-is.patch
>> and it can be found in the queue-6.14 subdirectory.
>>
>> If you, or anyone else, feels it should not be added to the stable tree,
>> please let <stable@vger.kernel.org> know about it.
>>
>
>Hi Sasha,
>
>Including this in stable is fine but if you do please also pick up
>commit 41a0926e82f4 ("s390/pci: Fix s390_mmio_read/write syscall page
>fault handling") otherwise the mmap() with vfio-pci won't work on
>systems that rely on the MMIO syscalls but would already work on those
>that have the newer memory I/O feature. Meaning once you have the
>mmap() PCI resource suppot the cited commit becomes a relevant fix.

Will do, thanks!

-- 
Thanks,
Sasha