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KVM: Prepare memslot data structures for multiple hugepage sizes

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[avi: fix build on non-x86]

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel
2009-06-19 15:16:23 +02:00
committed by Avi Kivity
parent f340ca0f06
commit ec04b2604c
8 changed files with 73 additions and 42 deletions
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30
arch/x86/kvm/mmu.c
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@@ -394,9 +394,9 @@ static int *slot_largepage_idx(gfn_t gfn, struct kvm_memory_slot *slot)
{
unsigned long idx;
idx = (gfn / KVM_PAGES_PER_HPAGE) -
(slot->base_gfn / KVM_PAGES_PER_HPAGE);
return &slot->lpage_info[idx].write_count;
idx = (gfn / KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL)) -
(slot->base_gfn / KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL));
return &slot->lpage_info[0][idx].write_count;
}
static void account_shadowed(struct kvm *kvm, gfn_t gfn)
@@ -485,10 +485,10 @@ static unsigned long *gfn_to_rmap(struct kvm *kvm, gfn_t gfn, int lpage)
if (!lpage)
return &slot->rmap[gfn - slot->base_gfn];
idx = (gfn / KVM_PAGES_PER_HPAGE) -
(slot->base_gfn / KVM_PAGES_PER_HPAGE);
idx = (gfn / KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL)) -
(slot->base_gfn / KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL));
return &slot->lpage_info[idx].rmap_pde;
return &slot->lpage_info[0][idx].rmap_pde;
}
/*
@@ -731,11 +731,11 @@ static int kvm_handle_hva(struct kvm *kvm, unsigned long hva,
end = start + (memslot->npages << PAGE_SHIFT);
if (hva >= start && hva < end) {
gfn_t gfn_offset = (hva - start) >> PAGE_SHIFT;
int idx = gfn_offset /
KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL);
retval |= handler(kvm, &memslot->rmap[gfn_offset]);
retval |= handler(kvm,
&memslot->lpage_info[
gfn_offset /
KVM_PAGES_PER_HPAGE].rmap_pde);
&memslot->lpage_info[0][idx].rmap_pde);
}
}
@@ -1876,8 +1876,9 @@ static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, int write, gfn_t gfn)
pfn_t pfn;
unsigned long mmu_seq;
if (is_largepage_backed(vcpu, gfn & ~(KVM_PAGES_PER_HPAGE-1))) {
gfn &= ~(KVM_PAGES_PER_HPAGE-1);
if (is_largepage_backed(vcpu, gfn &
~(KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL) - 1))) {
gfn &= ~(KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL) - 1);
largepage = 1;
}
@@ -2082,8 +2083,9 @@ static int tdp_page_fault(struct kvm_vcpu *vcpu, gva_t gpa,
if (r)
return r;
if (is_largepage_backed(vcpu, gfn & ~(KVM_PAGES_PER_HPAGE-1))) {
gfn &= ~(KVM_PAGES_PER_HPAGE-1);
if (is_largepage_backed(vcpu, gfn &
~(KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL) - 1))) {
gfn &= ~(KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL) - 1);
largepage = 1;
}
mmu_seq = vcpu->kvm->mmu_notifier_seq;
@@ -2485,7 +2487,7 @@ static void mmu_guess_page_from_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
gfn = (gpte & PT64_BASE_ADDR_MASK) >> PAGE_SHIFT;
if (is_large_pte(gpte) && is_largepage_backed(vcpu, gfn)) {
gfn &= ~(KVM_PAGES_PER_HPAGE-1);
gfn &= ~(KVM_PAGES_PER_HPAGE(PT_DIRECTORY_LEVEL) - 1);
vcpu->arch.update_pte.largepage = 1;
}
vcpu->arch.update_pte.mmu_seq = vcpu->kvm->mmu_notifier_seq;