KVM: x86/mmu: Don't try to unprotect an INVALID_GPA

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If getting the gpa for a gva fails, e.g. because the gva isn't mapped in
the guest page tables, don't try to unprotect the invalid gfn.  This is
mostly a performance fix (avoids unnecessarily taking mmu_lock), as
for_each_gfn_valid_sp_with_gptes() won't explode on garbage input, it's
simply pointless.

Link: https://lore.kernel.org/r/20240831001538.336683-13-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Sean Christopherson 2024-08-30 17:15:27 -07:00

parent 2df354e37c

commit b7e948898e

1 changed files with 6 additions and 1 deletions

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arch/x86/kvm/mmu/mmu.c

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