linux-kernel - Re: [PATCH v3 0/2] x86/mm/sme: fix the kdump kernel breakage on SME system when CONFIG_IMA

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Message-ID: <ZyGf2PZtf4H+dE9u@MiWiFi-R3L-srv>
Date: Wed, 30 Oct 2024 10:54:16 +0800
From: Baoquan He <bhe@...hat.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, thomas.lendacky@....com,
	dyoung@...hat.com, daniel.kiper@...cle.com, noodles@...com,
	lijiang@...hat.com, kexec@...ts.infradead.org, x86@...nel.org
Subject: Re: [PATCH v3 0/2] x86/mm/sme: fix the kdump kernel breakage on SME
 system when CONFIG_IMA_KEXEC=y

On 10/29/24 at 06:23pm, Andrew Morton wrote:
> On Wed, 11 Sep 2024 16:16:13 +0800 Baoquan He <bhe@...hat.com> wrote:
> 
> > Currently, distros like Fedora/RHEL have enabled CONFIG_IMA_KEXEC by
> > default. This makes kexec/kdump kernel always fail to boot up on SME
> > platform because of a code bug. By debugging, the root cause is found
> > out and bug is fixed with this patchset.
> 
> [1/1] is a cleanup.  [2/2] fixes a bug which appears to go all the way
> back to 5.10.  The bugfix patch has a dependency on the cleanup, which
> is unfortunate.
> 
> We could add the Fixes: to [1/1] and add cc:stable to both patches so
> they get backported into -stable kernels together.  But I think it's
> nicer to just concentrate on the single bugfix patch (with Fixes: and
> cc:stable) and do the cleanup later, in the usual fashion.

Totally agree, thanks a lot.

> 
> So can I suggest a resend please?

Will send a standalone patch to fix the bug, and send clean up patch
after the fix patch is settled.