Messages in this thread | | | From | Steve Rutherford <> | Date | Fri, 15 Sep 2023 11:44:16 -0700 | Subject | Re: [PATCH] x86/sev: Make early_set_memory_decrypted() calls page aligned |
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I believe V3 of this fix was already merged into both x86 and Linus' tree (I think as ac3f9c9f1b37edaa7d1a9b908bc79d843955a1a2, "x86/sev: Make enc_dec_hypercall() accept a size instead of npages").
On Fri, Sep 15, 2023 at 4:59 AM Ingo Molnar <mingo@kernel.org> wrote: > > > * 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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