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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-06-30 16:05:00 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-08-01 10:47:26 +0300 |
| commit | 84754cd8fca66ed476585eabad68cacf42834199 (patch) | |
| tree | 9338f484e308bc50b2cbe8916dffc10f4ef66387 /arch | |
| parent | 9e7b0e7fba45ca3c6357aeb7091ebc281f1de365 (diff) | |
| download | linux-3.10-84754cd8fca66ed476585eabad68cacf42834199.tar.gz linux-3.10-84754cd8fca66ed476585eabad68cacf42834199.tar.bz2 linux-3.10-84754cd8fca66ed476585eabad68cacf42834199.zip | |
KVM: MMU: cleanup FNAME(fetch)() functions
Cleanup this function that we are already get the direct sp's access
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 117d63f6304..59e750c1a26 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -306,12 +306,18 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, gfn_t table_gfn; int r; int level; + bool dirty = is_dirty_gpte(gw->ptes[gw->level - 1]); + unsigned direct_access; pt_element_t curr_pte; struct kvm_shadow_walk_iterator iterator; if (!is_present_gpte(gw->ptes[gw->level - 1])) return NULL; + direct_access = gw->pt_access & gw->pte_access; + if (!dirty) + direct_access &= ~ACC_WRITE_MASK; + for_each_shadow_entry(vcpu, addr, iterator) { level = iterator.level; sptep = iterator.sptep; @@ -319,15 +325,13 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, mmu_set_spte(vcpu, sptep, access, gw->pte_access & access, user_fault, write_fault, - is_dirty_gpte(gw->ptes[gw->level-1]), - ptwrite, level, + dirty, ptwrite, level, gw->gfn, pfn, false, true); break; } if (is_shadow_present_pte(*sptep) && !is_large_pte(*sptep)) { struct kvm_mmu_page *child; - unsigned direct_access; if (level != gw->level) continue; @@ -339,10 +343,6 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, * so we should update the spte at this point to get * a new sp with the correct access. */ - direct_access = gw->pt_access & gw->pte_access; - if (!is_dirty_gpte(gw->ptes[gw->level - 1])) - direct_access &= ~ACC_WRITE_MASK; - child = page_header(*sptep & PT64_BASE_ADDR_MASK); if (child->role.access == direct_access) continue; @@ -359,11 +359,8 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, } if (level <= gw->level) { - int delta = level - gw->level + 1; direct = 1; - if (!is_dirty_gpte(gw->ptes[level - delta])) - access &= ~ACC_WRITE_MASK; - access &= gw->pte_access; + access = direct_access; /* * It is a large guest pages backed by small host pages, |