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| author | Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> | 2011-07-01 01:37:24 +0900 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-07-12 13:16:44 +0300 |
| commit | 3c8c652ae4c984a950d0672597085db866509914 (patch) | |
| tree | fd7e197f05c178a1311147dd292356fc217cdf44 | |
| parent | 92c1c1e85bdd72b41f9fd39b9d43d4b3c146d02d (diff) | |
| download | blackbird-op-linux-3c8c652ae4c984a950d0672597085db866509914.tar.gz blackbird-op-linux-3c8c652ae4c984a950d0672597085db866509914.zip | |
KVM: MMU: Introduce is_last_gpte() to clean up walk_addr_generic()
Suggested by Ingo and Avi.
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 9c0afba1ab8e..1e1c2444cef5 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -113,6 +113,24 @@ static unsigned FNAME(gpte_access)(struct kvm_vcpu *vcpu, pt_element_t gpte) return access; } +static bool FNAME(is_last_gpte)(struct guest_walker *walker, + struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, + pt_element_t gpte) +{ + if (walker->level == PT_PAGE_TABLE_LEVEL) + return true; + + if ((walker->level == PT_DIRECTORY_LEVEL) && is_large_pte(gpte) && + (PTTYPE == 64 || is_pse(vcpu))) + return true; + + if ((walker->level == PT_PDPE_LEVEL) && is_large_pte(gpte) && + (mmu->root_level == PT64_ROOT_LEVEL)) + return true; + + return false; +} + /* * Fetch a guest pte for a guest virtual address */ @@ -221,13 +239,7 @@ retry_walk: walker->ptes[walker->level - 1] = pte; - if ((walker->level == PT_PAGE_TABLE_LEVEL) || - ((walker->level == PT_DIRECTORY_LEVEL) && - is_large_pte(pte) && - (PTTYPE == 64 || is_pse(vcpu))) || - ((walker->level == PT_PDPE_LEVEL) && - is_large_pte(pte) && - mmu->root_level == PT64_ROOT_LEVEL)) { + if (FNAME(is_last_gpte)(walker, vcpu, mmu, pte)) { int lvl = walker->level; gpa_t real_gpa; gfn_t gfn; |
