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| author | Avi Kivity <avi@qumranet.com> | 2007-05-01 14:16:52 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 12:05:38 +0300 |
| commit | 09072daf37abbfe8e2d5018dd913f229c76190f7 (patch) | |
| tree | dbccbe493a9412cb89bd48b7c0c8ec21f70cf091 /drivers/kvm/kvm_main.c | |
| parent | 621358455ae043ab39bc3481f13b101bd6016c8d (diff) | |
| download | lwn-09072daf37abbfe8e2d5018dd913f229c76190f7.tar.gz lwn-09072daf37abbfe8e2d5018dd913f229c76190f7.zip | |
KVM: Unify kvm_mmu_pre_write() and kvm_mmu_post_write()
Instead of calling two functions and repeating expensive checks, call one
function and provide it with before/after information.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/kvm_main.c')
| -rw-r--r-- | drivers/kvm/kvm_main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index 7d682586423b..b6ad9c6f2efe 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -1071,18 +1071,18 @@ static int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa, { struct page *page; void *virt; + unsigned offset = offset_in_page(gpa); if (((gpa + bytes - 1) >> PAGE_SHIFT) != (gpa >> PAGE_SHIFT)) return 0; page = gfn_to_page(vcpu->kvm, gpa >> PAGE_SHIFT); if (!page) return 0; - kvm_mmu_pre_write(vcpu, gpa, bytes); mark_page_dirty(vcpu->kvm, gpa >> PAGE_SHIFT); virt = kmap_atomic(page, KM_USER0); + kvm_mmu_pte_write(vcpu, gpa, virt + offset, val, bytes); memcpy(virt + offset_in_page(gpa), val, bytes); kunmap_atomic(virt, KM_USER0); - kvm_mmu_post_write(vcpu, gpa, bytes); return 1; } |