Re: [PATCH AUTOSEL 5.18 15/49] arm64: Expand ESR_ELx_WFx_ISS_TI to match its ARMv8.7 definition

From: Marc Zyngier
Date: Wed Jun 01 2022 - 11:26:40 EST


On Wed, 01 Jun 2022 14:51:39 +0100,
Sasha Levin <sashal@xxxxxxxxxx> wrote:
>
> From: Marc Zyngier <maz@xxxxxxxxxx>
>
> [ Upstream commit 6a437208cb942a2dd98f7e1c3fd347ed3d425ffc ]
>
> Starting with FEAT_WFXT in ARMv8.7, the TI field in the ISS
> that is reported on a WFx trap is expanded by one bit to
> allow the description of WFET and WFIT.
>
> Special care is taken to exclude the WFxT bit from the mask
> used to match WFI so that it also matches WFIT when trapped from
> EL0.
>
> Reviewed-by: Joey Gouly <joey.gouly@xxxxxxx>
> Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
> Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
> Link: https://lore.kernel.org/r/20220419182755.601427-2-maz@xxxxxxxxxx
> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

Please do not backport this patch. It achieves nothing on its own, and
the kernel isn't broken without it.

Also, please do not AUTOSEL KVM/arm64 patches that are not tagged with
a Cc stable.

Thanks,

M.

--
Without deviation from the norm, progress is not possible.