diff options
| author | Sean Christopherson <seanjc@google.com> | 2024-01-22 15:53:15 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-04-19 12:15:20 -0400 |
| commit | 949019b98289b801edce7e92e022a0e95fc4cc3b (patch) | |
| tree | 0b5e499bc5c5fbd05cb4cd585e6fcf719f1b389d /arch/x86/kvm/mmu/spte.c | |
| parent | 7fa5e2929198fe728fb6ad9cbc9e395185867743 (diff) | |
KVM: x86/mmu: Track shadow MMIO value on a per-VM basis
TDX will use a different shadow PTE entry value for MMIO from VMX. Add a
member to kvm_arch and track value for MMIO per-VM instead of a global
variable. By using the per-VM EPT entry value for MMIO, the existing VMX
logic is kept working. Introduce a separate setter function so that guest
TD can use a different value later.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Message-Id: <229a18434e5d83f45b1fcd7bf1544d79db1becb6.1705965635.git.isaku.yamahata@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu/spte.c')
| -rw-r--r-- | arch/x86/kvm/mmu/spte.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/mmu/spte.c b/arch/x86/kvm/mmu/spte.c index 0a0e83859c27..a5e014d7bc62 100644 --- a/arch/x86/kvm/mmu/spte.c +++ b/arch/x86/kvm/mmu/spte.c @@ -74,10 +74,10 @@ u64 make_mmio_spte(struct kvm_vcpu *vcpu, u64 gfn, unsigned int access) u64 spte = generation_mmio_spte_mask(gen); u64 gpa = gfn << PAGE_SHIFT; - WARN_ON_ONCE(!shadow_mmio_value); + WARN_ON_ONCE(!vcpu->kvm->arch.shadow_mmio_value); access &= shadow_mmio_access_mask; - spte |= shadow_mmio_value | access; + spte |= vcpu->kvm->arch.shadow_mmio_value | access; spte |= gpa | shadow_nonpresent_or_rsvd_mask; spte |= (gpa & shadow_nonpresent_or_rsvd_mask) << SHADOW_NONPRESENT_OR_RSVD_MASK_LEN; |