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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-02-06 14:14:34 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-02-12 20:09:42 +0100 |
| commit | 7a02674d154d38da33517855b6d1d4cfc27a9a04 (patch) | |
| tree | 7b0b88516d18701b891c089c34870d5558214fdf /arch/x86/kvm/x86.c | |
| parent | 331ca0f89fc206f06b341f7fe037d7d8662b1b9f (diff) | |
| download | linux-7a02674d154d38da33517855b6d1d4cfc27a9a04.tar.bz2 | |
KVM: x86/mmu: Avoid retpoline on ->page_fault() with TDP
Wrap calls to ->page_fault() with a small shim to directly invoke the
TDP fault handler when the kernel is using retpolines and TDP is being
used. Single out the TDP fault handler and annotate the TDP path as
likely to coerce the compiler into preferring it over the indirect
function call.
Rename tdp_page_fault() to kvm_tdp_page_fault(), as it's exposed outside
of mmu.c to allow inlining the shim.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5e762c8afcce..fd9e2f633d14 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -10192,7 +10192,7 @@ void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu, struct kvm_async_pf *work) work->arch.cr3 != vcpu->arch.mmu->get_cr3(vcpu)) return; - vcpu->arch.mmu->page_fault(vcpu, work->cr2_or_gpa, 0, true); + kvm_mmu_do_page_fault(vcpu, work->cr2_or_gpa, 0, true); } static inline u32 kvm_async_pf_hash_fn(gfn_t gfn) |