The patch titled
KVM: MMU: Teach the page table walker to track guest page table gfns
has been removed from the -mm tree. Its filename was
kvm-mmu-teach-the-page-table-walker-to-track-guest-page-table-gfns.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: KVM: MMU: Teach the page table walker to track guest page table gfns
From: Avi Kivity <avi@xxxxxxxxxxxx>
Saving the table gfns removes the need to walk the guest and host page tables
in lockstep.
Signed-off-by: Avi Kivity <avi@xxxxxxxxxxxx>
Acked-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/kvm/paging_tmpl.h | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff -puN drivers/kvm/paging_tmpl.h~kvm-mmu-teach-the-page-table-walker-to-track-guest-page-table-gfns drivers/kvm/paging_tmpl.h
--- a/drivers/kvm/paging_tmpl.h~kvm-mmu-teach-the-page-table-walker-to-track-guest-page-table-gfns
+++ a/drivers/kvm/paging_tmpl.h
@@ -52,6 +52,7 @@
*/
struct guest_walker {
int level;
+ gfn_t table_gfn;
pt_element_t *table;
pt_element_t inherited_ar;
};
@@ -63,8 +64,8 @@ static void FNAME(init_walker)(struct gu
struct kvm_memory_slot *slot;
walker->level = vcpu->mmu.root_level;
- slot = gfn_to_memslot(vcpu->kvm,
- (vcpu->cr3 & PT64_BASE_ADDR_MASK) >> PAGE_SHIFT);
+ walker->table_gfn = (vcpu->cr3 & PT64_BASE_ADDR_MASK) >> PAGE_SHIFT;
+ slot = gfn_to_memslot(vcpu->kvm, walker->table_gfn);
hpa = safe_gpa_to_hpa(vcpu, vcpu->cr3 & PT64_BASE_ADDR_MASK);
walker->table = kmap_atomic(pfn_to_page(hpa >> PAGE_SHIFT), KM_USER0);
@@ -133,6 +134,8 @@ static pt_element_t *FNAME(fetch_guest)(
return &walker->table[index];
if (walker->level != 3 || is_long_mode(vcpu))
walker->inherited_ar &= walker->table[index];
+ walker->table_gfn = (walker->table[index] & PT_BASE_ADDR_MASK)
+ >> PAGE_SHIFT;
paddr = safe_gpa_to_hpa(vcpu, walker->table[index] & PT_BASE_ADDR_MASK);
kunmap_atomic(walker->table, KM_USER0);
walker->table = kmap_atomic(pfn_to_page(paddr >> PAGE_SHIFT),
_
Patches currently in -mm which might be from avi@xxxxxxxxxxxx are
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
