KVM: x86/mmu: WARN if KVM attempts to map into an invalid TDP MMU root

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When mapping into the TDP MMU, WARN (if KVM_PROVE_MMU=y) if the root is
invalid, e.g. if KVM is attempting to insert a mapping without checking if
the information and MMU context is fresh.

Reviewed-by: Kai Huang <kai.huang@intel.com>
Reviewed-by: Yan Zhao <yan.y.zhao@intel.com>
Tested-by: Yan Zhao <yan.y.zhao@intel.com>
Tested-by: Kai Huang <kai.huang@intel.com>
Link: https://patch.msgid.link/20251030200951.3402865-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Sean Christopherson 2025-10-30 13:09:28 -07:00

parent 3ab3283dbb

commit c1f173fb33

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arch/x86/kvm/mmu/tdp_mmu.c

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