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authorJoerg Roedel <joerg.roedel@amd.com>2010-09-10 17:30:48 +0200
committerAvi Kivity <avi@redhat.com>2010-10-24 10:52:34 +0200
commitc30a358d33e0e111f06e54a4a4125371e6b6693c (patch)
treebdd1d80f2eca1a63344b80f8e4353095cd06a947 /include/linux/kvm_host.h
parent1e301feb079e8ee6091bb75283e960fc33059a68 (diff)
KVM: MMU: Add infrastructure for two-level page walker
This patch introduces a mmu-callback to translate gpa addresses in the walk_addr code. This is later used to translate l2_gpa addresses into l1_gpa addresses. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'include/linux/kvm_host.h')
-rw-r--r--include/linux/kvm_host.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index f2ecdd52032b..917e68ff5ed2 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -534,6 +534,11 @@ static inline gpa_t gfn_to_gpa(gfn_t gfn)
return (gpa_t)gfn << PAGE_SHIFT;
}
+static inline gfn_t gpa_to_gfn(gpa_t gpa)
+{
+ return (gfn_t)(gpa >> PAGE_SHIFT);
+}
+
static inline hpa_t pfn_to_hpa(pfn_t pfn)
{
return (hpa_t)pfn << PAGE_SHIFT;