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KVM: ia64: Add the support for translating PAL Call's pointer args

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Add the support to translate PAL Call's pointer args.

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 18:08:36 +08:00 committed by Avi Kivity
parent 27d146449c
commit 4b7bb626e3
1 changed files with 45 additions and 3 deletions
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48
arch/ia64/kvm/process.c
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@ -550,18 +550,60 @@ void reflect_interruption(u64 ifa, u64 isr, u64 iim,
inject_guest_interruption(vcpu, vector);
}
static unsigned long kvm_trans_pal_call_args(struct kvm_vcpu *vcpu,
unsigned long arg)
{
struct thash_data *data;
unsigned long gpa, poff;
if (!is_physical_mode(vcpu)) {
/* Depends on caller to provide the DTR or DTC mapping.*/
data = vtlb_lookup(vcpu, arg, D_TLB);
if (data)
gpa = data->page_flags & _PAGE_PPN_MASK;
else {
data = vhpt_lookup(arg);
if (!data)
return 0;
gpa = data->gpaddr & _PAGE_PPN_MASK;
}
poff = arg & (PSIZE(data->ps) - 1);
arg = PAGEALIGN(gpa, data->ps) | poff;
}
arg = kvm_gpa_to_mpa(arg << 1 >> 1);
return (unsigned long)__va(arg);
}
static void set_pal_call_data(struct kvm_vcpu *vcpu)
{
struct exit_ctl_data *p = &vcpu->arch.exit_data;
unsigned long gr28 = vcpu_get_gr(vcpu, 28);
unsigned long gr29 = vcpu_get_gr(vcpu, 29);
unsigned long gr30 = vcpu_get_gr(vcpu, 30);
/*FIXME:For static and stacked convention, firmware
* has put the parameters in gr28-gr31 before
* break to vmm !!*/
p->u.pal_data.gr28 = vcpu_get_gr(vcpu, 28);
p->u.pal_data.gr29 = vcpu_get_gr(vcpu, 29);
p->u.pal_data.gr30 = vcpu_get_gr(vcpu, 30);
switch (gr28) {
case PAL_PERF_MON_INFO:
case PAL_HALT_INFO:
p->u.pal_data.gr29 = kvm_trans_pal_call_args(vcpu, gr29);
p->u.pal_data.gr30 = vcpu_get_gr(vcpu, 30);
break;
case PAL_BRAND_INFO:
p->u.pal_data.gr29 = gr29;;
p->u.pal_data.gr30 = kvm_trans_pal_call_args(vcpu, gr30);
break;
default:
p->u.pal_data.gr29 = gr29;;
p->u.pal_data.gr30 = vcpu_get_gr(vcpu, 30);
}
p->u.pal_data.gr28 = gr28;
p->u.pal_data.gr31 = vcpu_get_gr(vcpu, 31);
p->exit_reason = EXIT_REASON_PAL_CALL;
}