We no longer rely on paging_tmpl.h defines; so we can move the function
to mmu.c.
Rely on zero extension to 64 bits to get the correct nx behaviour.
Reviewed-by: Xiao Guangrong <xiaoguangr...@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <a...@redhat.com>
---
arch/x86/kvm/mmu.c | 10 ++++++++++
arch/x86/kvm/paging_tmpl.h | 21 +++++----------------
2 files changed, 15 insertions(+), 16 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 54c9cb4..f297a2c 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3437,6 +3437,16 @@ static bool sync_mmio_spte(u64 *sptep, gfn_t gfn,
unsigned access,
return false;
}
+static inline unsigned gpte_access(struct kvm_vcpu *vcpu, u64 gpte)
+{
+ unsigned access;
+
+ access = (gpte & (PT_WRITABLE_MASK | PT_USER_MASK)) | ACC_EXEC_MASK;
+ access &= ~(gpte >> PT64_NX_SHIFT);
+
+ return access;
+}
+
#define PTTYPE 64
#include "paging_tmpl.h"
#undef PTTYPE
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 064bcb3..1cbf576 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -101,17 +101,6 @@ static int FNAME(cmpxchg_gpte)(struct kvm_vcpu *vcpu,
struct kvm_mmu *mmu,
return (ret != orig_pte);
}
-static unsigned FNAME(gpte_access)(struct kvm_vcpu *vcpu, pt_element_t gpte)
-{
- unsigned access;
-
- access = (gpte & (PT_WRITABLE_MASK | PT_USER_MASK)) | ACC_EXEC_MASK;
-#if PTTYPE == 64
- access &= ~(gpte >> PT64_NX_SHIFT);
-#endif
- return access;
-}
-
static bool FNAME(is_last_gpte)(struct guest_walker *walker,
struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
pt_element_t gpte)
@@ -217,7 +206,7 @@ retry_walk:
last_gpte = FNAME(is_last_gpte)(walker, vcpu, mmu, pte);
if (last_gpte) {
- pte_access = pt_access & FNAME(gpte_access)(vcpu, pte);
+ pte_access = pt_access & gpte_access(vcpu, pte);
/* check if the kernel is fetching from user page */
if (unlikely(pte_access & PT_USER_MASK) &&
kvm_read_cr4_bits(vcpu, X86_CR4_SMEP))
@@ -268,7 +257,7 @@ retry_walk:
break;
}
- pt_access &= FNAME(gpte_access)(vcpu, pte);
+ pt_access &= gpte_access(vcpu, pte);
--walker->level;
}
@@ -364,7 +353,7 @@ static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct
kvm_mmu_page *sp,
return;
pgprintk("%s: gpte %llx spte %p\n", __func__, (u64)gpte, spte);
- pte_access = sp->role.access & FNAME(gpte_access)(vcpu, gpte);
+ pte_access = sp->role.access & gpte_access(vcpu, gpte);
protect_clean_gpte(&pte_access, gpte);
pfn = gfn_to_pfn_atomic(vcpu->kvm, gpte_to_gfn(gpte));
if (mmu_invalid_pfn(pfn))
@@ -438,7 +427,7 @@ static void FNAME(pte_prefetch)(struct kvm_vcpu *vcpu,
struct guest_walker *gw,
if (FNAME(prefetch_invalid_gpte)(vcpu, sp, spte, gpte))
continue;
- pte_access = sp->role.access & FNAME(gpte_access)(vcpu, gpte);
+ pte_access = sp->role.access & gpte_access(vcpu, gpte);
protect_clean_gpte(&pte_access, gpte);
gfn = gpte_to_gfn(gpte);
pfn = pte_prefetch_gfn_to_pfn(vcpu, gfn,
@@ -791,7 +780,7 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct
kvm_mmu_page *sp)
gfn = gpte_to_gfn(gpte);
pte_access = sp->role.access;
- pte_access &= FNAME(gpte_access)(vcpu, gpte);
+ pte_access &= gpte_access(vcpu, gpte);
protect_clean_gpte(&pte_access, gpte);
if (sync_mmio_spte(&sp->spt[i], gfn, pte_access, &nr_present))
--
1.7.12
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