Messages in this thread | | | Date | Fri, 15 Sep 2023 13:59:28 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] x86/sev: Make early_set_memory_decrypted() calls page aligned |
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* Steve Rutherford <srutherford@google.com> 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@google.com> > --- > 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
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