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authorXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>2012-10-16 20:09:36 +0800
committerAvi Kivity <avi@redhat.com>2012-10-17 16:39:18 +0200
commita052b42b0e618f34ca891f00b4e8b8ac0e4b80c0 (patch)
tree7cfe89fc71bc93b056bacd78af40333ba8812ef5 /arch/x86/kvm
parentKVM: MMU: cleanup FNAME(page_fault) (diff)
downloadlinux-dev-a052b42b0e618f34ca891f00b4e8b8ac0e4b80c0.tar.xz
linux-dev-a052b42b0e618f34ca891f00b4e8b8ac0e4b80c0.zip
KVM: MMU: move prefetch_invalid_gpte out of pagaing_tmp.h
The function does not depend on guest mmu mode, move it out from paging_tmpl.h Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
-rw-r--r--arch/x86/kvm/mmu.c36
-rw-r--r--arch/x86/kvm/paging_tmpl.h26
2 files changed, 31 insertions, 31 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 7fe1e038be21..3d5ca7939380 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2506,6 +2506,14 @@ static void nonpaging_new_cr3(struct kvm_vcpu *vcpu)
mmu_free_roots(vcpu);
}
+static bool is_rsvd_bits_set(struct kvm_mmu *mmu, u64 gpte, int level)
+{
+ int bit7;
+
+ bit7 = (gpte >> 7) & 1;
+ return (gpte & mmu->rsvd_bits_mask[bit7][level-1]) != 0;
+}
+
static pfn_t pte_prefetch_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn,
bool no_dirty_log)
{
@@ -2518,6 +2526,26 @@ static pfn_t pte_prefetch_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn,
return gfn_to_pfn_memslot_atomic(slot, gfn);
}
+static bool prefetch_invalid_gpte(struct kvm_vcpu *vcpu,
+ struct kvm_mmu_page *sp, u64 *spte,
+ u64 gpte)
+{
+ if (is_rsvd_bits_set(&vcpu->arch.mmu, gpte, PT_PAGE_TABLE_LEVEL))
+ goto no_present;
+
+ if (!is_present_gpte(gpte))
+ goto no_present;
+
+ if (!(gpte & PT_ACCESSED_MASK))
+ goto no_present;
+
+ return false;
+
+no_present:
+ drop_spte(vcpu->kvm, spte);
+ return true;
+}
+
static int direct_pte_prefetch_many(struct kvm_vcpu *vcpu,
struct kvm_mmu_page *sp,
u64 *start, u64 *end)
@@ -3395,14 +3423,6 @@ static void paging_free(struct kvm_vcpu *vcpu)
nonpaging_free(vcpu);
}
-static bool is_rsvd_bits_set(struct kvm_mmu *mmu, u64 gpte, int level)
-{
- int bit7;
-
- bit7 = (gpte >> 7) & 1;
- return (gpte & mmu->rsvd_bits_mask[bit7][level-1]) != 0;
-}
-
static inline void protect_clean_gpte(unsigned *access, unsigned gpte)
{
unsigned mask;
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index c5555329c735..36a80edf8006 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -305,26 +305,6 @@ static int FNAME(walk_addr_nested)(struct guest_walker *walker,
addr, access);
}
-static bool FNAME(prefetch_invalid_gpte)(struct kvm_vcpu *vcpu,
- struct kvm_mmu_page *sp, u64 *spte,
- pt_element_t gpte)
-{
- if (is_rsvd_bits_set(&vcpu->arch.mmu, gpte, PT_PAGE_TABLE_LEVEL))
- goto no_present;
-
- if (!is_present_gpte(gpte))
- goto no_present;
-
- if (!(gpte & PT_ACCESSED_MASK))
- goto no_present;
-
- return false;
-
-no_present:
- drop_spte(vcpu->kvm, spte);
- return true;
-}
-
static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
u64 *spte, const void *pte)
{
@@ -333,7 +313,7 @@ static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
pfn_t pfn;
gpte = *(const pt_element_t *)pte;
- if (FNAME(prefetch_invalid_gpte)(vcpu, sp, spte, gpte))
+ if (prefetch_invalid_gpte(vcpu, sp, spte, gpte))
return;
pgprintk("%s: gpte %llx spte %p\n", __func__, (u64)gpte, spte);
@@ -408,7 +388,7 @@ static void FNAME(pte_prefetch)(struct kvm_vcpu *vcpu, struct guest_walker *gw,
gpte = gptep[i];
- if (FNAME(prefetch_invalid_gpte)(vcpu, sp, spte, gpte))
+ if (prefetch_invalid_gpte(vcpu, sp, spte, gpte))
continue;
pte_access = sp->role.access & gpte_access(vcpu, gpte);
@@ -751,7 +731,7 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
sizeof(pt_element_t)))
return -EINVAL;
- if (FNAME(prefetch_invalid_gpte)(vcpu, sp, &sp->spt[i], gpte)) {
+ if (prefetch_invalid_gpte(vcpu, sp, &sp->spt[i], gpte)) {
vcpu->kvm->tlbs_dirty++;
continue;
}