[PATCH 0/2] KVM: SEV: Fixups for the cache maintenance fixes

[Sean Christopherson]

Two fixes, two bugs.  I'm batting a 1.000.  Fix a double-free and a race
pointed out by Sashiko.

Regarding fixing the double free, I initially said I'd just move the allocation
to avoid having to deal with CPUMASK_OFFSTACK=n[*], but that felt too much like
I was leaving trap for someone else.  So instead I elected to nullify the
pointer with memset(), which has a fairly desirable side effect of clearing the
mask when CPUMASK_OFFSTACK=n.

[*] https://lore.kernel.org/all/arQMARDUTSjbWpMX@xxxxxxxxxx

Sean Christopherson (2):
  KVM: SEV: Nullify "have run CPUs" mask pointer when freeing it
  KVM: SEV: Do cache maintenance on the source VM *before* clearing SEV
    state

 arch/x86/kvm/svm/sev.c | 46 ++++++++++++++++++++++++++----------------
 1 file changed, 29 insertions(+), 17 deletions(-)


base-commit: a4bab1c12fd528ccaafee00360e07463873404a9
-- 
2.56.0.rc1.315.gc6ed9934b7-goog