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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-12-23 16:09:29 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-01-12 11:31:19 +0200 |
| commit | f8e453b00cf1d90a047eb0ef8eefe6200e0f4512 (patch) | |
| tree | 7347af552a9a0ca0ba2bf8e19e3c33721a7637e5 /arch/x86 | |
| parent | b034cf0105235e65ee1b0161dbe8fef0338d06e7 (diff) | |
| download | op-kernel-dev-f8e453b00cf1d90a047eb0ef8eefe6200e0f4512.zip op-kernel-dev-f8e453b00cf1d90a047eb0ef8eefe6200e0f4512.tar.gz | |
KVM: MMU: handle 'map_writable' in set_spte() function
Move the operation of 'writable' to set_spte() to clean up code
[avi: remove unneeded booleanification]
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 11 |
2 files changed, 4 insertions, 11 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 892ffc6..9cafbb4 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -1983,6 +1983,8 @@ static int set_spte(struct kvm_vcpu *vcpu, u64 *sptep, if (host_writable) spte |= SPTE_HOST_WRITEABLE; + else + pte_access &= ~ACC_WRITE_MASK; spte |= (u64)pfn << PAGE_SHIFT; @@ -2222,8 +2224,6 @@ static int __direct_map(struct kvm_vcpu *vcpu, gpa_t v, int write, if (iterator.level == level) { unsigned pte_access = ACC_ALL; - if (!map_writable) - pte_access &= ~ACC_WRITE_MASK; mmu_set_spte(vcpu, iterator.sptep, ACC_ALL, pte_access, 0, write, 1, &pt_write, level, gfn, pfn, prefault, map_writable); diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 5ca9426..53210f1 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -511,9 +511,6 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, link_shadow_page(it.sptep, sp); } - if (!map_writable) - access &= ~ACC_WRITE_MASK; - mmu_set_spte(vcpu, it.sptep, access, gw->pte_access & access, user_fault, write_fault, dirty, ptwrite, it.level, gw->gfn, pfn, prefault, map_writable); @@ -809,12 +806,8 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp) nr_present++; pte_access = sp->role.access & FNAME(gpte_access)(vcpu, gpte); - if (!(sp->spt[i] & SPTE_HOST_WRITEABLE)) { - pte_access &= ~ACC_WRITE_MASK; - host_writable = 0; - } else { - host_writable = 1; - } + host_writable = sp->spt[i] & SPTE_HOST_WRITEABLE; + set_spte(vcpu, &sp->spt[i], pte_access, 0, 0, is_dirty_gpte(gpte), PT_PAGE_TABLE_LEVEL, gfn, spte_to_pfn(sp->spt[i]), true, false, |
