KVM: x86: introduce kvm_mmu_invalidate_gva

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Wrap the combination of mmu->invlpg and kvm_x86_ops->tlb_flush_gva
into a new function.  This function also lets us specify the host PGD to
invalidate and also the MMU, both of which will be useful in fixing and
simplifying kvm_inject_emulated_page_fault.

A nested guest's MMU however has g_context->invlpg == NULL.  Instead of
setting it to nonpaging_invlpg, make kvm_mmu_invalidate_gva the only
entry point to mmu->invlpg and make a NULL invlpg pointer equivalent
to nonpaging_invlpg, saving a retpoline.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Paolo Bonzini 2020-03-23 20:42:57 -04:00

parent 53b3d8e9d5

commit 5efac0741c

2 changed files with 47 additions and 26 deletions

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arch/x86/include/asm/kvm_host.h

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71

arch/x86/kvm/mmu/mmu.c

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