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[Qemu-devel] [PATCH] s390x: fix smp support for kvm
From: |
Christian Borntraeger |
Subject: |
[Qemu-devel] [PATCH] s390x: fix smp support for kvm |
Date: |
Thu, 05 May 2011 09:29:57 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.14) Gecko/20110223 Lightning/1.0b2 Thunderbird/3.1.8 |
Currently smp support for kvm does not work. Qemu does a kvm run even on
secondary CPUs which dont have a sane state (initial psw == 0)
triggering some program faults. Architecturally these cpus are in the stopped
state, so we should not do the kvm run ioctl. (these CPUs will be started
by a SIGP restart later during the boot process)
We need to tell the loop that this cpu should not run. Jan Kiszka pointed
out that kvm_arch_process_async_events is the right place to do.
Signed-off-by: Christian Borntraeger <address@hidden>
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -172,7 +172,7 @@ void kvm_arch_post_run(CPUState *env, struct kvm_run *run)
int kvm_arch_process_async_events(CPUState *env)
{
- return 0;
+ return env->halted;
}
void kvm_s390_interrupt_internal(CPUState *env, int type, uint32_t parm,