[PATCH RESEND 1/2] prctl: Generalize PR_SET_MDWE support check to be per-arch

[Zev Weiss]

On Tue, Feb 27, 2024 at 11:53:59AM PST, Helge Deller wrote:
>On 2/27/24 11:24, Russell King (Oracle) wrote:
>>On Mon, Feb 26, 2024 at 05:35:41PM -0800, Zev Weiss wrote:
>>>There exist systems other than PARISC where MDWE may not be feasible
>>>to support; rather than cluttering up the generic code with additional
>>>arch-specific logic let's add a generic function for checking MDWE
>>>support and allow each arch to override it as needed.
>>>
>>>Signed-off-by: Zev Weiss <zev at bewilderbeest.net>
>>>Cc: <stable at vger.kernel.org> # v6.3+
>>
>>PA-RISC folk need to ack/review-by this patch.
>
>I'm fine with patch 1/2:
>Acked-by: Helge Deller <deller at gmx.de> # parisc
>
>>Alternatively, it needs
>>to be restructured to add the arch_memory_deny_write_exec_supported()
>>override without touching the PA-RISC code, which then makes the Arm
>>patch independent of the status of the PA-RISC patch. That will allow
>>the Arm issue to be solved even if an ack is not forthcoming for the
>>PA-RISC parts.
>>>Alternatively, I wonder whether akpm would be willing to pick up this
>>patch set as-is.
>
>I have no preference, but I think both patches should be pushed
>together via arm tree or akpm.
>
>Helge

Ping...Russell, Andrew, any thoughts on how this could move forward?


Thanks,
Zev