On 08/30/2011 05:36 AM, Xiao Guangrong wrote:
Directly Use mmu_page_zap_pte to zap spte in FNAME(invlpg), also remove the
same code between FNAME(invlpg) and FNAME(sync_page)
+static gpa_t FNAME(get_first_pte_gpa)(struct kvm_mmu_page *sp)
spte
+{
+ int offset = 0;
+
+ if (PTTYPE == 32)
+ offset = sp->role.quadrant<< PT64_LEVEL_BITS;
+
+ return gfn_to_gpa(sp->gfn) + offset * sizeof(pt_element_t);
+}
Only works for L1 tables, yes? Need a comment so it isn't reused for L2.
@@ -663,7 +673,6 @@ static void FNAME(invlpg)(struct kvm_vcpu *vcpu, gva_t gva)
gpa_t pte_gpa = -1;
int level;
u64 *sptep;
- int need_flush = 0;
vcpu_clear_mmio_info(vcpu, gva);
@@ -675,36 +684,20 @@ static void FNAME(invlpg)(struct kvm_vcpu *vcpu, gva_t
gva)
sp = page_header(__pa(sptep));
if (is_last_spte(*sptep, level)) {
- int offset, shift;
-
if (!sp->unsync)
break;
- shift = PAGE_SHIFT -
- (PT_LEVEL_BITS - PT64_LEVEL_BITS) * level;
- offset = sp->role.quadrant<< shift;
-
- pte_gpa = (sp->gfn<< PAGE_SHIFT) + offset;
+ pte_gpa = FNAME(get_first_pte_gpa)(sp);
Here is can be used for L2 - I think we can use 2MB host pages to back
4MB guest mappings.
--
error compiling committee.c: too many arguments to function
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