KVM: x86/mmu: Plumb param "old_spte" into kvm_x86_ops.set_external_spte()

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If tdp_mmu_set_spte_atomic() triggers an atomic zap on a mirror SPTE
(though currently no paths trigger it), the change is propagated via the
set_external_spte() op. Plumb the old SPTE into the set_external_spte() op,
so TDX code rather than TDP MMU code can warn if the atomic zap isn't
allowed, i.e. to let TDX enforce TDX's rules (inasmuch as possible).

Rename mirror_spte to new_spte to follow the TDP MMU's naming, and to make
it more obvious what value the parameter holds.

Opportunistically tweak the ordering of parameters to match the pattern of
most TDP MMU functions, which do "old, new, level".

Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Link: https://patch.msgid.link/20260509075533.4193-1-yan.y.zhao@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Sean Christopherson 2026-05-09 15:55:33 +08:00

parent 78d23e299b

commit 291bcb3a75

3 changed files with 15 additions and 15 deletions

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4

arch/x86/include/asm/kvm_host.h

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4

arch/x86/kvm/mmu/tdp_mmu.c

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22

arch/x86/kvm/vmx/tdx.c

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