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SubjectRe: [PATCH] svm: Add mutex_lock to protect apic_access_page_done on AMD systems
On Mon, Nov 12, 2018 at 12:23:14PM +0000, Suthikulpanit, Suravee wrote:
> From: Wei Wang <wawei@amazon.de>
>
> There is a race condition when accessing kvm->arch.apic_access_page_done.
> Due to it, x86_set_memory_region will fail when creating the second vcpu
> for a svm guest.
>
> Add a mutex_lock to serialize the accesses to apic_access_page_done.
> This lock is also used by vmx for the same purpose.
>
> Signed-off-by: Wei Wang <wawei@amazon.de>
> Signed-off-by: Amadeusz Juskowiak <ajusk@amazon.de>
> Signed-off-by: Julian Stecklina <jsteckli@amazon.de>
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>

Reviewed-by: Joerg Roedel <jroedel@suse.de>

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