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| author | Avi Kivity <avi@redhat.com> | 2010-07-13 14:27:04 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-08-02 06:40:40 +0300 |
| commit | 32ef26a3598636be520abed90ed0c2f439d36bbe (patch) | |
| tree | bf6cff9c68d5ed9116656dfb1f40d9bc8bae7ace /arch/x86/kvm/mmu.c | |
| parent | 4a994358b919c3b14de61be5e30d9edc9089ba3f (diff) | |
| download | lwn-32ef26a3598636be520abed90ed0c2f439d36bbe.tar.gz lwn-32ef26a3598636be520abed90ed0c2f439d36bbe.zip | |
KVM: MMU: Add link_shadow_page() helper
To simplify the process of fetching an spte, add a helper that links
a shadow page to an spte.
Reviewed-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 89d7a2cae53b..df3a7a79cce3 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -1482,6 +1482,16 @@ static void shadow_walk_next(struct kvm_shadow_walk_iterator *iterator) --iterator->level; } +static void link_shadow_page(u64 *sptep, struct kvm_mmu_page *sp) +{ + u64 spte; + + spte = __pa(sp->spt) + | PT_PRESENT_MASK | PT_ACCESSED_MASK + | PT_WRITABLE_MASK | PT_USER_MASK; + *sptep = spte; +} + static void kvm_mmu_page_unlink_children(struct kvm *kvm, struct kvm_mmu_page *sp) { |