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KVM: ia64: add directed mmio range support for kvm guests

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Using vt-d, kvm guests can be assigned physcial devices, so
this patch introduce a new mmio type (directed mmio)
to handle its mmio access.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Xiantao Zhang
2008-09-28 01:39:46 -07:00
committed by Avi Kivity
parent 1cbea809c4
commit b010eb5103
4 changed files with 33 additions and 22 deletions
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4
arch/ia64/kvm/kvm-ia64.c
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@@ -1447,11 +1447,11 @@ int kvm_arch_set_memory_region(struct kvm *kvm,
if (!kvm_is_mmio_pfn(pfn)) {
kvm_set_pmt_entry(kvm, base_gfn + i,
pfn << PAGE_SHIFT,
_PAGE_MA_WB);
_PAGE_AR_RWX | _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),
GPFN_PHYS_MMIO | (pfn << PAGE_SHIFT),
_PAGE_MA_UC);
memslot->rmap[i] = 0;
}