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Re: [PATCH] xen: fix multicall debug feature
- To: Juergen Gross <jgross@xxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx
- From: boris.ostrovsky@xxxxxxxxxx
- Date: Fri, 28 Mar 2025 15:29:58 -0400
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- Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Fri, 28 Mar 2025 19:30:35 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 3/27/25 3:06 PM, Juergen Gross
wrote:
Initializing a percpu variable with the address of a struct tagged as
.initdata is breaking the build with CONFIG_SECTION_MISMATCH_WARN_ONLY
not set to "y".
Fix that by using an access function instead returning the .initdata
struct address if the percpu space of the struct hasn't been
allocated yet.
Fixes: 368990a7fe30 ("xen: fix multicall debug data referencing")
Reported-by: Borislav Petkov <bp@xxxxxxxxx>
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
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