On Tue, Nov 16, 2021 at 11:54:46AM +0100, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
>
> The patch below does not apply to the 5.15-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@xxxxxxxxxxxxxxx>.
>
> thanks,
>
> greg k-h
>
> ------------------ original commit in Linus's tree ------------------
>
> From 541ac97186d9ea88491961a46284de3603c914fd Mon Sep 17 00:00:00 2001
> From: Borislav Petkov <bp@xxxxxxx>
> Date: Fri, 1 Oct 2021 21:41:20 +0200
> Subject: [PATCH] x86/sev: Make the #VC exception stacks part of the default
> stacks storage
>
> The size of the exception stacks was increased by the commit in Fixes,
> resulting in stack sizes greater than a page in size. The #VC exception
> handling was only mapping the first (bottom) page, resulting in an
> SEV-ES guest failing to boot.
>
> Make the #VC exception stacks part of the default exception stacks
> storage and allocate them with a CONFIG_AMD_MEM_ENCRYPT=y .config. Map
> them only when a SEV-ES guest has been detected.
>
> Rip out the custom VC stacks mapping and storage code.
>
> [ bp: Steal and adapt Tom's commit message. ]
>
> Fixes: 7fae4c24a2b8 ("x86: Increase exception stack sizes")
$ git tag --contains 7fae4c24a2b8 | grep -E "^v"
v5.16-rc1
Scripts kaputtski?
:-)
--
Regards/Gruss,
Boris.
SUSE Software Solutions Germany GmbH, GF: Ivo Totev, HRB 36809, AG Nürnberg
