KVM: x86/mmu: Sanity check input to kvm_mmu_free_roots()

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Tweak KVM_MMU_ROOTS_ALL to precisely cover all current+previous root
flags, and add a sanity in kvm_mmu_free_roots() to verify that the set
of roots to free doesn't stray outside KVM_MMU_ROOTS_ALL.

Signed-off-by: Lai Jiangshan <jiangshan.ljs@antgroup.com>
Link: https://lore.kernel.org/r/20230216154115.710033-8-jiangshanlai@gmail.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Sean Christopherson 2023-02-16 23:41:13 +08:00

parent e6722d9211

commit f94db0c8b9

2 changed files with 6 additions and 4 deletions

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8

arch/x86/include/asm/kvm_host.h

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2

arch/x86/kvm/mmu/mmu.c

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