Re: [PATCH v6.12-stable 00/14] Backport: arm64: debug: remove hook registration, split exception entry

[Ada Couprie Diaz <ada.coupriediaz@arm.com>]

On 29/05/2026 14:38, Ada Couprie Diaz wrote:

> Hi Sebastian, thanks a lot for the backport !
>
> I'll take a more thorough look soon just to check, but the original
> series contained a bug with pseudo-NMIs, which I corrected
> in a later patch[0] in commit ea0d55ae4b32 ("arm64: debug:
> always unmask interrupts in el0_softstp()").
>
> I see that the bug is present in the backport, so the fix should 
> definitely
> be added to the series !
>
> Kind regards,
> Ada
>
> [0]: 
> https://lore.kernel.org/all/20251014092536.18831-1-ada.coupriediaz@arm.com/
>
> On 28/05/2026 15:48, Sebastian Andrzej Siewior wrote:
>> Hi,
>>
>> this is a backport of the "arm64: debug: remove hook registration, split
>> exception entry" series
>>     https://lore.kernel.org/all/20250707114109.35672-1-ada.coupriediaz@arm.com/ 
>>
>>
>> which has been merged as of v6.17-rc1. It fixes the HW breakpoint issue
>> on PREEMPT_RT.
>>
>> I only picked one dependency and manually fixed the other conflicts to
>> avoid a larger backport.

Given the conflicts do not seem to have required significant code changes,
I don't know how useful it is but it all looks good to me ; conditional 
on pulling
the EL0 soft-step fix for pseudo-NMIs with the backport.

Reviewed-by: Ada Couprie Diaz <ada.coupriediaz@arm.com>

Thanks again for backporting the series !
Kind regards,
Ada

>>
>> This has been prepared against v6.12.91. v6.12-stable is the only
>> relevant tree for a backport (earlier stable version have no PREEMPT_RT
>> support).
>>
>> [...]
>>
>> Sebastian