Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=da928521b7a095e85f6ac92a6c106bca7e17625f
Commit:     da928521b7a095e85f6ac92a6c106bca7e17625f
Parent:     5fb07ddb183eb4728f240e09c3305d271ce61d48
Author:     Avi Kivity <[EMAIL PROTECTED]>
AuthorDate: Wed Nov 21 13:54:47 2007 +0200
Committer:  Avi Kivity <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 17:53:10 2008 +0200

    KVM: MMU: Move pse36 handling to the guest walker
    
    Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
---
 drivers/kvm/mmu.c         |    7 +++++++
 drivers/kvm/paging_tmpl.h |    5 ++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index 346aa65..a9fed59 100644
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -218,6 +218,13 @@ static int is_rmap_pte(u64 pte)
                && pte != shadow_notrap_nonpresent_pte;
 }
 
+static gfn_t pse36_gfn_delta(u32 gpte)
+{
+       int shift = 32 - PT32_DIR_PSE36_SHIFT - PAGE_SHIFT;
+
+       return (gpte & PT32_DIR_PSE36_MASK) << shift;
+}
+
 static void set_shadow_pte(u64 *sptep, u64 spte)
 {
 #ifdef CONFIG_X86_64
diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h
index 6f79ae8..dceb4b9 100644
--- a/drivers/kvm/paging_tmpl.h
+++ b/drivers/kvm/paging_tmpl.h
@@ -149,6 +149,8 @@ static int FNAME(walk_addr)(struct guest_walker *walker,
                    && (PTTYPE == 64 || is_pse(vcpu))) {
                        walker->gfn = gpte_to_gfn_pde(pte);
                        walker->gfn += PT_INDEX(addr, PT_PAGE_TABLE_LEVEL);
+                       if (PTTYPE == 32 && is_cpuid_PSE36())
+                               walker->gfn += pse36_gfn_delta(pte);
                        break;
                }
 
@@ -320,9 +322,6 @@ static void FNAME(set_pde)(struct kvm_vcpu *vcpu, 
pt_element_t gpde,
 
        access_bits &= gpde;
        gaddr = (gpa_t)gfn << PAGE_SHIFT;
-       if (PTTYPE == 32 && is_cpuid_PSE36())
-               gaddr |= (gpde & PT32_DIR_PSE36_MASK) <<
-                       (32 - PT32_DIR_PSE36_SHIFT);
        FNAME(set_pte_common)(vcpu, shadow_pte, gaddr,
                              gpde, access_bits, user_fault, write_fault,
                              ptwrite, walker, gfn);
-
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