diff options
| author | Sean Christopherson <seanjc@google.com> | 2024-10-10 11:23:35 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-10-25 12:59:07 -0400 |
| commit | 365e319208442a0807a96e9ea4d0b1fa338f1929 (patch) | |
| tree | 66d199380b28fe0ea3236f4197b8f61f6890222f /arch/x86/kvm/svm/nested.c | |
| parent | 7afe79f5734aebb55895424074bb944ac4717b7d (diff) | |
KVM: Pass in write/dirty to kvm_vcpu_map(), not kvm_vcpu_unmap()
Now that all kvm_vcpu_{,un}map() users pass "true" for @dirty, have them
pass "true" as a @writable param to kvm_vcpu_map(), and thus create a
read-only mapping when possible.
Note, creating read-only mappings can be theoretically slower, as they
don't play nice with fast GUP due to the need to break CoW before mapping
the underlying PFN. But practically speaking, creating a mapping isn't
a super hot path, and getting a writable mapping for reading is weird and
confusing.
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20241010182427.1434605-34-seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/svm/nested.c')
| -rw-r--r-- | arch/x86/kvm/svm/nested.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index cf84103ce38b..b708bdf7eaff 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -926,7 +926,7 @@ out_exit_err: nested_svm_vmexit(svm); out: - kvm_vcpu_unmap(vcpu, &map, true); + kvm_vcpu_unmap(vcpu, &map); return ret; } @@ -1130,7 +1130,7 @@ int nested_svm_vmexit(struct vcpu_svm *svm) vmcb12->control.exit_int_info_err, KVM_ISA_SVM); - kvm_vcpu_unmap(vcpu, &map, true); + kvm_vcpu_unmap(vcpu, &map); nested_svm_transition_tlb_flush(vcpu); |