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Diffstat (limited to 'arch/ia64/kvm/vtlb.c')
-rw-r--r--arch/ia64/kvm/vtlb.c23
1 files changed, 17 insertions, 6 deletions
diff --git a/arch/ia64/kvm/vtlb.c b/arch/ia64/kvm/vtlb.c
index def4576d22b..e22b93361e0 100644
--- a/arch/ia64/kvm/vtlb.c
+++ b/arch/ia64/kvm/vtlb.c
@@ -390,7 +390,7 @@ void thash_purge_entries_remote(struct kvm_vcpu *v, u64 va, u64 ps)
u64 translate_phy_pte(u64 *pte, u64 itir, u64 va)
{
- u64 ps, ps_mask, paddr, maddr;
+ u64 ps, ps_mask, paddr, maddr, io_mask;
union pte_flags phy_pte;
ps = itir_ps(itir);
@@ -398,8 +398,9 @@ u64 translate_phy_pte(u64 *pte, u64 itir, u64 va)
phy_pte.val = *pte;
paddr = *pte;
paddr = ((paddr & _PAGE_PPN_MASK) & ps_mask) | (va & ~ps_mask);
- maddr = kvm_lookup_mpa(paddr >> PAGE_SHIFT);
- if (maddr & GPFN_IO_MASK) {
+ maddr = kvm_get_mpt_entry(paddr >> PAGE_SHIFT);
+ io_mask = maddr & GPFN_IO_MASK;
+ if (io_mask && (io_mask != GPFN_PHYS_MMIO)) {
*pte |= VTLB_PTE_IO;
return -1;
}
@@ -418,7 +419,7 @@ int thash_purge_and_insert(struct kvm_vcpu *v, u64 pte, u64 itir,
u64 ifa, int type)
{
u64 ps;
- u64 phy_pte;
+ u64 phy_pte, io_mask, index;
union ia64_rr vrr, mrr;
int ret = 0;
@@ -426,13 +427,16 @@ int thash_purge_and_insert(struct kvm_vcpu *v, u64 pte, u64 itir,
vrr.val = vcpu_get_rr(v, ifa);
mrr.val = ia64_get_rr(ifa);
+ index = (pte & _PAGE_PPN_MASK) >> PAGE_SHIFT;
+ io_mask = kvm_get_mpt_entry(index) & GPFN_IO_MASK;
phy_pte = translate_phy_pte(&pte, itir, ifa);
/* Ensure WB attribute if pte is related to a normal mem page,
* which is required by vga acceleration since qemu maps shared
* vram buffer with WB.
*/
- if (!(pte & VTLB_PTE_IO) && ((pte & _PAGE_MA_MASK) != _PAGE_MA_NAT)) {
+ if (!(pte & VTLB_PTE_IO) && ((pte & _PAGE_MA_MASK) != _PAGE_MA_NAT) &&
+ io_mask != GPFN_PHYS_MMIO) {
pte &= ~_PAGE_MA_MASK;
phy_pte &= ~_PAGE_MA_MASK;
}
@@ -566,12 +570,19 @@ void thash_init(struct thash_cb *hcb, u64 sz)
}
}
-u64 kvm_lookup_mpa(u64 gpfn)
+u64 kvm_get_mpt_entry(u64 gpfn)
{
u64 *base = (u64 *) KVM_P2M_BASE;
return *(base + gpfn);
}
+u64 kvm_lookup_mpa(u64 gpfn)
+{
+ u64 maddr;
+ maddr = kvm_get_mpt_entry(gpfn);
+ return maddr&_PAGE_PPN_MASK;
+}
+
u64 kvm_gpa_to_mpa(u64 gpa)
{
u64 pte = kvm_lookup_mpa(gpa >> PAGE_SHIFT);