linux-kernel - Re: [PATCH 3/3] xen, pvh: fix unbootable VMs by inlining memset in xen_prepare

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Message-ID: <87cymr13r1.ffs@tglx>
Date: Fri, 02 Aug 2024 14:57:38 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Alexey Dobriyan <adobriyan@...il.com>, Juergen Gross <jgross@...e.com>,
 Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc: xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] xen, pvh: fix unbootable VMs by inlining memset in
 xen_prepare_pvh

On Fri, Aug 02 2024 at 11:53, Alexey Dobriyan wrote:
> If this memset() is not inlined than PVH early boot code can call
> into KASAN-instrumented memset() which results in unbootable VMs.
>
> Ubuntu's 22.04.4 LTS gcc version 11.4.0 (Ubuntu 11.4.0-1ubuntu1~22.04)
> doesn't inline this memset but inlines __builtin_memset.

memset() ......