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| author | Tiejun Chen <tiejun.chen@intel.com> | 2014-09-01 18:44:04 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-09-03 10:04:10 +0200 |
| commit | d143148383d0395539073dd6c2f25ddf6656bdcc (patch) | |
| tree | 122881b4567d4a8279cb27793ce5542b976268df /arch/x86/kvm/mmu.h | |
| parent | 56f17dd3fbc44adcdbc3340fe3988ddb833a47a7 (diff) | |
| download | linux-d143148383d0395539073dd6c2f25ddf6656bdcc.tar.bz2 | |
KVM: mmio: cleanup kvm_set_mmio_spte_mask
Just reuse rsvd_bits() inside kvm_set_mmio_spte_mask()
for slightly better code.
Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.h')
| -rw-r--r-- | arch/x86/kvm/mmu.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h index b982112d2ca5..bde8ee725754 100644 --- a/arch/x86/kvm/mmu.h +++ b/arch/x86/kvm/mmu.h @@ -56,6 +56,11 @@ #define PFERR_RSVD_MASK (1U << PFERR_RSVD_BIT) #define PFERR_FETCH_MASK (1U << PFERR_FETCH_BIT) +static inline u64 rsvd_bits(int s, int e) +{ + return ((1ULL << (e - s + 1)) - 1) << s; +} + int kvm_mmu_get_spte_hierarchy(struct kvm_vcpu *vcpu, u64 addr, u64 sptes[4]); void kvm_mmu_set_mmio_spte_mask(u64 mmio_mask); |