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Date: Thu, 26 Jun 2008 15:28:00 +0300
From: Avi Kivity <avi@...ranet.com>
To: kvm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Sheng Yang <sheng.yang@...el.com>
Subject: [PATCH 18/50] KVM: IOAPIC/LAPIC: Enable NMI support
From: Sheng Yang <sheng.yang@...el.com>
[avi: fix ia64 build breakage]
Signed-off-by: Sheng Yang <sheng.yang@...el.com>
Signed-off-by: Avi Kivity <avi@...ranet.com>
---
arch/x86/kvm/lapic.c | 3 ++-
arch/x86/kvm/x86.c | 6 ++++++
include/asm-ia64/kvm_host.h | 2 ++
include/asm-x86/kvm_host.h | 4 ++++
virt/kvm/ioapic.c | 20 ++++++++++++++++++--
5 files changed, 32 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index f9201fb..e48d193 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -356,8 +356,9 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
case APIC_DM_SMI:
printk(KERN_DEBUG "Ignoring guest SMI\n");
break;
+
case APIC_DM_NMI:
- printk(KERN_DEBUG "Ignoring guest NMI\n");
+ kvm_inject_nmi(vcpu);
break;
case APIC_DM_INIT:
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 28642c4..2c308f0 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -173,6 +173,12 @@ void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long addr,
kvm_queue_exception_e(vcpu, PF_VECTOR, error_code);
}
+void kvm_inject_nmi(struct kvm_vcpu *vcpu)
+{
+ vcpu->arch.nmi_pending = 1;
+}
+EXPORT_SYMBOL_GPL(kvm_inject_nmi);
+
void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code)
{
WARN_ON(vcpu->arch.exception.pending);
diff --git a/include/asm-ia64/kvm_host.h b/include/asm-ia64/kvm_host.h
index c082c20..5c958b0 100644
--- a/include/asm-ia64/kvm_host.h
+++ b/include/asm-ia64/kvm_host.h
@@ -521,4 +521,6 @@ int kvm_emulate_halt(struct kvm_vcpu *vcpu);
int kvm_pal_emul(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
void kvm_sal_emul(struct kvm_vcpu *vcpu);
+static inline void kvm_inject_nmi(struct kvm_vcpu *vcpu) {}
+
#endif
diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h
index 4bcdc7d..b666219 100644
--- a/include/asm-x86/kvm_host.h
+++ b/include/asm-x86/kvm_host.h
@@ -288,6 +288,8 @@ struct kvm_vcpu_arch {
unsigned int hv_clock_tsc_khz;
unsigned int time_offset;
struct page *time_page;
+
+ bool nmi_pending;
};
struct kvm_mem_alias {
@@ -515,6 +517,8 @@ void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
u32 error_code);
+void kvm_inject_nmi(struct kvm_vcpu *vcpu);
+
void fx_init(struct kvm_vcpu *vcpu);
int emulator_read_std(unsigned long addr,
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 1dcf9f3..cb8a20b 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -146,6 +146,11 @@ static int ioapic_inj_irq(struct kvm_ioapic *ioapic,
return kvm_apic_set_irq(vcpu, vector, trig_mode);
}
+static void ioapic_inj_nmi(struct kvm_vcpu *vcpu)
+{
+ kvm_inject_nmi(vcpu);
+}
+
static u32 ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
u8 dest_mode)
{
@@ -239,8 +244,19 @@ static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
}
}
break;
-
- /* TODO: NMI */
+ case IOAPIC_NMI:
+ for (vcpu_id = 0; deliver_bitmask != 0; vcpu_id++) {
+ if (!(deliver_bitmask & (1 << vcpu_id)))
+ continue;
+ deliver_bitmask &= ~(1 << vcpu_id);
+ vcpu = ioapic->kvm->vcpus[vcpu_id];
+ if (vcpu)
+ ioapic_inj_nmi(vcpu);
+ else
+ ioapic_debug("NMI to vcpu %d failed\n",
+ vcpu->vcpu_id);
+ }
+ break;
default:
printk(KERN_WARNING "Unsupported delivery mode %d\n",
delivery_mode);
--
1.5.6
--
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