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| author |   Paolo Bonzini <pbonzini@redhat.com> | 2020-04-16 09:48:07 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-04-21 09:13:08 -0400 |
| commit | c36b71503a2268206ebeda6697094ffb4e7e94c2 (patch) | |
| tree | 21246416886044ae8a3cfd39b9af17b6600bbb15 /include/linux/kvm_host.h | |
| parent | KVM: x86/mmu: Set @writable to false for non-visible accesses by L2 (diff) | |
| download | wireguard-linux-c36b71503a2268206ebeda6697094ffb4e7e94c2.tar.xz wireguard-linux-c36b71503a2268206ebeda6697094ffb4e7e94c2.zip | |
KVM: x86/mmu: Avoid an extra memslot lookup in try_async_pf() for L2
Create a new function kvm_is_visible_memslot() and use it from
kvm_is_visible_gfn(); use the new function in try_async_pf() too,
to avoid an extra memslot lookup.
Opportunistically squish a multi-line comment into a single-line comment.
Note, the end result, KVM_PFN_NOSLOT, is unchanged.
Cc: Jim Mattson <jmattson@google.com>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/linux/kvm_host.h')
| -rw-r--r-- | include/linux/kvm_host.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 658215f6102c..7d4f1eb70274 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1357,6 +1357,12 @@ static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val) } #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ +static inline bool kvm_is_visible_memslot(struct kvm_memory_slot *memslot) +{ + return (memslot && memslot->id < KVM_USER_MEM_SLOTS && + !(memslot->flags & KVM_MEMSLOT_INVALID)); +} + struct kvm_vcpu *kvm_get_running_vcpu(void); struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void); |