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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2011-05-15 17:22:04 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-07-12 10:45:03 +0200 |
| commit | 8b0cedff040b652f3d36b1368778667581b0c140 (patch) | |
| tree | d1a8d8c7368d96830a0b4d6af7aa652ab5a015d6 /virt/kvm | |
| parent | KVM: MMU: optimize pte write path if don't have protected sp (diff) | |
| download | linux-8b0cedff040b652f3d36b1368778667581b0c140.tar.xz linux-8b0cedff040b652f3d36b1368778667581b0c140.zip | |
KVM: use __copy_to_user/__clear_user to write guest page
Simply use __copy_to_user/__clear_user to write guest page since we have
already verified the user address when the memslot is set
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/kvm_main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 96ebc0679415..087b3f8ca46e 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1345,7 +1345,7 @@ int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data, addr = gfn_to_hva(kvm, gfn); if (kvm_is_error_hva(addr)) return -EFAULT; - r = copy_to_user((void __user *)addr + offset, data, len); + r = __copy_to_user((void __user *)addr + offset, data, len); if (r) return -EFAULT; mark_page_dirty(kvm, gfn); @@ -1405,7 +1405,7 @@ int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc, if (kvm_is_error_hva(ghc->hva)) return -EFAULT; - r = copy_to_user((void __user *)ghc->hva, data, len); + r = __copy_to_user((void __user *)ghc->hva, data, len); if (r) return -EFAULT; mark_page_dirty_in_slot(kvm, ghc->memslot, ghc->gpa >> PAGE_SHIFT); |