[PATCH 2/3] KVM: MMU: Introduce a helper to read guest pte

[Takuya Yoshikawa]

From: Takuya Yoshikawa <yoshikawa.tak...@oss.ntt.co.jp>

This will be optimized later.

Signed-off-by: Takuya Yoshikawa <yoshikawa.tak...@oss.ntt.co.jp>
---
 arch/x86/kvm/paging_tmpl.h |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 74f8567..109939a 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -109,6 +109,14 @@ static unsigned FNAME(gpte_access)(struct kvm_vcpu *vcpu, 
pt_element_t gpte)
        return access;
 }
 
+static int FNAME(read_guest_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
+                                gfn_t table_gfn, int offset, pt_element_t 
*ptep)
+{
+       return kvm_read_guest_page_mmu(vcpu, mmu, table_gfn, ptep,
+                                      offset, sizeof(*ptep),
+                                      PFERR_USER_MASK | PFERR_WRITE_MASK);
+}
+
 /*
  * Fetch a guest pte for a guest virtual address
  */
@@ -160,9 +168,7 @@ walk:
                walker->table_gfn[walker->level - 1] = table_gfn;
                walker->pte_gpa[walker->level - 1] = pte_gpa;
 
-               if (kvm_read_guest_page_mmu(vcpu, mmu, table_gfn, &pte,
-                                           offset, sizeof(pte),
-                                           PFERR_USER_MASK|PFERR_WRITE_MASK)) {
+               if (FNAME(read_guest_pte)(vcpu, mmu, table_gfn, offset, &pte)) {
                        present = false;
                        break;
                }
-- 
1.7.1

--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html