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Re: [PATCH] x86/wakeup: Fix code generation for bogus_saved_magic
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 11 Nov 2024 10:29:20 +0100
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- Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Mon, 11 Nov 2024 09:29:31 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 09.11.2024 01:36, Andrew Cooper wrote:
> bogus_saved_magic() is in a .code64 section but invokved in 32bit mode. This
> causes a real encoding difference.
>
> Before:
> 66 c7 04 25 14 80 0b 00 53 0e movw $0xe53,0xb8014(,%eiz,1)
>
> After:
> 66 c7 05 14 80 0b 00 53 0e movw $0xe53,0xb8014
>
> The differnce happens to be benign, but move the logic back into a .code32 for
> sanity sake. Annotate it with ELF metadata while doing so.
>
> Fixes: d8c8fef09054 ("Provide basic Xen PM infrastructure")
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
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