[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH uq/master 2/2] kvm: forward INIT signals coming from
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH uq/master 2/2] kvm: forward INIT signals coming from the chipset |
Date: |
Sat, 9 Mar 2013 07:48:50 +0100 |
CPU_INTERRUPT_INIT can also be generated if you have an internal APIC,
since the keyboard controller and the southbridge can also pulse the
CPU's INIT# pin.
Exit the VCPU is one is received, and process it by changing the
mp_state to KVM_MP_STATE_INIT_RECEIVED.
Signed-off-by: Paolo Bonzini <address@hidden>
---
target-i386/kvm.c | 34 +++++++++++++++++++++++-----------
1 file changed, 23 insertions(+), 11 deletions(-)
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 0cf413d..56de77c 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -1772,14 +1772,15 @@ void kvm_arch_pre_run(CPUState *cpu, struct kvm_run
*run)
}
}
- if (!kvm_irqchip_in_kernel()) {
- /* Force the VCPU out of its inner loop to process any INIT requests
- * or pending TPR access reports. */
- if (env->interrupt_request &
- (CPU_INTERRUPT_INIT | CPU_INTERRUPT_TPR)) {
- cpu->exit_request = 1;
- }
+ /* Force the VCPU out of its inner loop to process any INIT requests
+ * or (for userspace APIC, but it is cheap to combine the checks here)
+ * pending TPR access reports.
+ */
+ if (env->interrupt_request & (CPU_INTERRUPT_INIT | CPU_INTERRUPT_TPR)) {
+ cpu->exit_request = 1;
+ }
+ if (!kvm_irqchip_in_kernel()) {
/* Try to inject an interrupt if the guest can accept it */
if (run->ready_for_interrupt_injection &&
(env->interrupt_request & CPU_INTERRUPT_HARD) &&
@@ -1835,6 +1836,7 @@ int kvm_arch_process_async_events(CPUState *cs)
{
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
+ int ret;
if (env->interrupt_request & CPU_INTERRUPT_MCE) {
/* We must not raise CPU_INTERRUPT_MCE if it's not supported. */
@@ -1859,6 +1861,20 @@ int kvm_arch_process_async_events(CPUState *cs)
}
}
+ if (env->interrupt_request & CPU_INTERRUPT_INIT) {
+ kvm_cpu_synchronize_state(env);
+ if (kvm_irqchip_in_kernel()) {
+ env->mp_state = KVM_MP_STATE_INIT_RECEIVED;
+ env->interrupt_request = 0;
+ ret = kvm_put_mp_state(cpu);
+ if (ret < 0) {
+ return ret;
+ }
+ } else {
+ do_cpu_init(cpu);
+ }
+ }
+
if (kvm_irqchip_in_kernel()) {
return 0;
}
@@ -1872,10 +1888,6 @@ int kvm_arch_process_async_events(CPUState *cs)
(env->interrupt_request & CPU_INTERRUPT_NMI)) {
env->halted = 0;
}
- if (env->interrupt_request & CPU_INTERRUPT_INIT) {
- kvm_cpu_synchronize_state(env);
- do_cpu_init(cpu);
- }
if (env->interrupt_request & CPU_INTERRUPT_SIPI) {
kvm_cpu_synchronize_state(env);
do_cpu_sipi(cpu);
--
1.8.1.4
- [Qemu-devel] [PATCH uq/master 0/2] CPU reset (INIT#) support for KVM, Paolo Bonzini, 2013/03/09
- [Qemu-devel] [PATCH uq/master 1/2] kvm: detect errors from kvm_arch_process_async_events, Paolo Bonzini, 2013/03/09
- [Qemu-devel] [PATCH uq/master 2/2] kvm: forward INIT signals coming from the chipset,
Paolo Bonzini <=
- Re: [Qemu-devel] [PATCH uq/master 2/2] kvm: forward INIT signals coming from the chipset, Gleb Natapov, 2013/03/10
- Re: [Qemu-devel] [PATCH uq/master 2/2] kvm: forward INIT signals coming from the chipset, Paolo Bonzini, 2013/03/10
- Re: [Qemu-devel] [PATCH uq/master 2/2] kvm: forward INIT signals coming from the chipset, Gleb Natapov, 2013/03/10
- Re: [Qemu-devel] [PATCH uq/master 2/2] kvm: forward INIT signals coming from the chipset, Paolo Bonzini, 2013/03/10
- Re: [Qemu-devel] [PATCH uq/master 2/2] kvm: forward INIT signals coming from the chipset, Gleb Natapov, 2013/03/10
- Re: [Qemu-devel] [PATCH uq/master 2/2] kvm: forward INIT signals coming from the chipset, Paolo Bonzini, 2013/03/11