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KVM: ia64: vTLB change for enabling windows 2008 boot

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Simply the logic of hash vTLB, and export kvm_gpa_to_mpa.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Xiantao Zhang 2009-01-15 17:58:19 +08:00 committed by Avi Kivity
parent 91b2ae773d
commit 27d146449c
2 changed files with 20 additions and 25 deletions
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4
arch/ia64/kvm/vcpu.h
View file

@ -703,7 +703,7 @@ extern u64 guest_vhpt_lookup(u64 iha, u64 *pte);
extern void thash_purge_entries(struct kvm_vcpu *v, u64 va, u64 ps);
extern void thash_purge_entries_remote(struct kvm_vcpu *v, u64 va, u64 ps);
extern u64 translate_phy_pte(u64 *pte, u64 itir, u64 va);
extern int thash_purge_and_insert(struct kvm_vcpu *v, u64 pte,
extern void thash_purge_and_insert(struct kvm_vcpu *v, u64 pte,
u64 itir, u64 ifa, int type);
extern void thash_purge_all(struct kvm_vcpu *v);
extern struct thash_data *vtlb_lookup(struct kvm_vcpu *v,
@ -738,7 +738,7 @@ void kvm_init_vhpt(struct kvm_vcpu *v);
void thash_init(struct thash_cb *hcb, u64 sz);
void panic_vm(struct kvm_vcpu *v, const char *fmt, ...);
u64 kvm_gpa_to_mpa(u64 gpa);
extern u64 ia64_call_vsa(u64 proc, u64 arg1, u64 arg2, u64 arg3,
u64 arg4, u64 arg5, u64 arg6, u64 arg7);

41
arch/ia64/kvm/vtlb.c
View file

@ -164,11 +164,11 @@ static void vhpt_insert(u64 pte, u64 itir, u64 ifa, u64 gpte)
unsigned long ps, gpaddr;
ps = itir_ps(itir);
gpaddr = ((gpte & _PAGE_PPN_MASK) >> ps << ps) |
(ifa & ((1UL << ps) - 1));
rr.val = ia64_get_rr(ifa);
gpaddr = ((gpte & _PAGE_PPN_MASK) >> ps << ps) |
(ifa & ((1UL << ps) - 1));
head = (struct thash_data *)ia64_thash(ifa);
head->etag = INVALID_TI_TAG;
ia64_mf();
@ -412,16 +412,14 @@ u64 translate_phy_pte(u64 *pte, u64 itir, u64 va)
/*
* Purge overlap TCs and then insert the new entry to emulate itc ops.
* Notes: Only TC entry can purge and insert.
* 1 indicates this is MMIO
* Notes: Only TC entry can purge and insert.
*/
int thash_purge_and_insert(struct kvm_vcpu *v, u64 pte, u64 itir,
void thash_purge_and_insert(struct kvm_vcpu *v, u64 pte, u64 itir,
u64 ifa, int type)
{
u64 ps;
u64 phy_pte, io_mask, index;
union ia64_rr vrr, mrr;
int ret = 0;
ps = itir_ps(itir);
vrr.val = vcpu_get_rr(v, ifa);
@ -441,25 +439,19 @@ int thash_purge_and_insert(struct kvm_vcpu *v, u64 pte, u64 itir,
phy_pte &= ~_PAGE_MA_MASK;
}
if (pte & VTLB_PTE_IO)
ret = 1;
vtlb_purge(v, ifa, ps);
vhpt_purge(v, ifa, ps);
if (ps == mrr.ps) {
if (!(pte&VTLB_PTE_IO)) {
vhpt_insert(phy_pte, itir, ifa, pte);
} else {
vtlb_insert(v, pte, itir, ifa);
vcpu_quick_region_set(VMX(v, tc_regions), ifa);
}
} else if (ps > mrr.ps) {
if ((ps != mrr.ps) || (pte & VTLB_PTE_IO)) {
vtlb_insert(v, pte, itir, ifa);
vcpu_quick_region_set(VMX(v, tc_regions), ifa);
if (!(pte&VTLB_PTE_IO))
vhpt_insert(phy_pte, itir, ifa, pte);
} else {
}
if (pte & VTLB_PTE_IO)
return;
if (ps >= mrr.ps)
vhpt_insert(phy_pte, itir, ifa, pte);
else {
u64 psr;
phy_pte &= ~PAGE_FLAGS_RV_MASK;
psr = ia64_clear_ic();
@ -469,7 +461,6 @@ int thash_purge_and_insert(struct kvm_vcpu *v, u64 pte, u64 itir,
if (!(pte&VTLB_PTE_IO))
mark_pages_dirty(v, pte, ps);
return ret;
}
/*
@ -570,6 +561,10 @@ void thash_init(struct thash_cb *hcb, u64 sz)
u64 kvm_get_mpt_entry(u64 gpfn)
{
u64 *base = (u64 *) KVM_P2M_BASE;
if (gpfn >= (KVM_P2M_SIZE >> 3))
panic_vm(current_vcpu, "Invalid gpfn =%lx\n", gpfn);
return *(base + gpfn);
}