From: Borislav Petkov <bp@suse.de>
To: gregkh@linuxfoundation.org
Cc: brijesh.singh@amd.com, thomas.lendacky@amd.com, stable@vger.kernel.org
Subject: Re: FAILED: patch "[PATCH] x86/sev: Make the #VC exception stacks part of the default" failed to apply to 5.15-stable tree
Date: Tue, 16 Nov 2021 12:10:48 +0100 [thread overview]
Message-ID: <YZORuI1FLTO39Xt7@zn.tnic> (raw)
In-Reply-To: <1637060086211132@kroah.com>
On Tue, Nov 16, 2021 at 11:54:46AM +0100, gregkh@linuxfoundation.org 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@vger.kernel.org>.
>
> thanks,
>
> greg k-h
>
> ------------------ original commit in Linus's tree ------------------
>
> From 541ac97186d9ea88491961a46284de3603c914fd Mon Sep 17 00:00:00 2001
> From: Borislav Petkov <bp@suse.de>
> 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
next prev parent reply other threads:[~2021-11-16 11:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-16 10:54 FAILED: patch "[PATCH] x86/sev: Make the #VC exception stacks part of the default" failed to apply to 5.15-stable tree gregkh
2021-11-16 11:10 ` Borislav Petkov [this message]
2021-11-16 11:24 ` Greg KH
2021-11-16 11:52 ` Borislav Petkov
2021-11-16 12:50 ` Greg KH
2021-11-16 12:59 ` Borislav Petkov
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