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authorXiantao Zhang <xiantao.zhang@intel.com>2008-10-03 14:58:09 +0800
committerAvi Kivity <avi@redhat.com>2008-10-15 14:25:37 +0200
commit1cbea809c400661eecb538e0dd0bc4f3660f0a35 (patch)
treead67d040d76dab80ca548665da48e99fe93f1bd4 /arch/ia64/kvm
parent2f7497719179a9f3270b05434be989d21f9fdc09 (diff)
downloadop-kernel-dev-1cbea809c400661eecb538e0dd0bc4f3660f0a35.zip
op-kernel-dev-1cbea809c400661eecb538e0dd0bc4f3660f0a35.tar.gz
KVM: ia64: Make pmt table be able to hold physical mmio entries.
Don't try to do put_page once the entries are mmio. Set the tag to indicate the mmio space for vmm setting TLB's memory attribute. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/ia64/kvm')
-rw-r--r--arch/ia64/kvm/kvm-ia64.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index a6cf719..800a4f2 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -1437,17 +1437,24 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
int user_alloc)
{
unsigned long i;
- struct page *page;
+ unsigned long pfn;
int npages = mem->memory_size >> PAGE_SHIFT;
struct kvm_memory_slot *memslot = &kvm->memslots[mem->slot];
unsigned long base_gfn = memslot->base_gfn;
for (i = 0; i < npages; i++) {
- page = gfn_to_page(kvm, base_gfn + i);
- kvm_set_pmt_entry(kvm, base_gfn + i,
- page_to_pfn(page) << PAGE_SHIFT,
- _PAGE_AR_RWX|_PAGE_MA_WB);
- memslot->rmap[i] = (unsigned long)page;
+ pfn = gfn_to_pfn(kvm, base_gfn + i);
+ if (!kvm_is_mmio_pfn(pfn)) {
+ kvm_set_pmt_entry(kvm, base_gfn + i,
+ pfn << PAGE_SHIFT,
+ _PAGE_MA_WB);
+ memslot->rmap[i] = (unsigned long)pfn_to_page(pfn);
+ } else {
+ kvm_set_pmt_entry(kvm, base_gfn + i,
+ GPFN_LOW_MMIO | (pfn << PAGE_SHIFT),
+ _PAGE_MA_UC);
+ memslot->rmap[i] = 0;
+ }
}
return 0;
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