>From 635b75a4df55771f65ce7c40268a18d528114769 Mon Sep 17 00:00:00 2001
From: Xiantao Zhang <xiantao.zhang@xxxxxxxxx>
Date: Thu, 15 Jan 2009 18:08:36 +0800
Subject: [PATCH] KVM: ia64: Add the support for translating PAL Call's pointer args.
Add the support to translate PAL Call's pointer args.
Signed-off-by: Xiantao Zhang <xiantao.zhang@xxxxxxxxx>
---
arch/ia64/kvm/process.c | 48 ++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 45 insertions(+), 3 deletions(-)
diff --git a/arch/ia64/kvm/process.c b/arch/ia64/kvm/process.c
index e206244..6ed0347 100644
--- a/arch/ia64/kvm/process.c
+++ b/arch/ia64/kvm/process.c
@@ -549,18 +549,60 @@ 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;
}
--
1.6.0
Attachment:
0002-KVM-ia64-Add-the-support-for-translating-PAL-Call.patch
Description: 0002-KVM-ia64-Add-the-support-for-translating-PAL-Call.patch
