From: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxx>
Move the operation of 'writable' to set_spte() to clean up code
[avi: remove unneeded booleanification]
Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index afd17f2..e491653 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,
--
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