Re: [PATCH] x86/sev: Make early_set_memory_decrypted() calls page aligned

[Ingo Molnar]

* Steve Rutherford <srutherford@xxxxxxxxxx> wrote:

> early_set_memory_decrypted() assumes its parameters are page aligned.
> Non-page aligned calls result in additional pages being marked as
> decrypted via the encryption status hypercall, which results in
> consistent corruption of pages during live migration. Live
> migration requires accurate encryption status information to avoid
> migrating pages from the wrong perspective.
> 
> Fixes: 4716276184ec ("X86/KVM: Decrypt shared per-cpu variables when SEV is active")
> Signed-off-by: Steve Rutherford <srutherford@xxxxxxxxxx>
> ---
>  arch/x86/kernel/kvm.c | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)

I suppose this fix is going through the KVM tree, or should we pick it up
in the x86 tree?

Thanks,

	Ingo