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KVM: do not use sigtimedwait to catch SIGBUS

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Call kvm_on_sigbus_vcpu asynchronously from the VCPU thread.
Information for the SIGBUS can be stored in thread-local variables
and processed later in kvm_cpu_exec.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-02-08 12:48:54 +01:00
parent 4d39892cca
commit 2ae41db262
8 changed files with 53 additions and 44 deletions
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5
include/sysemu/kvm.h
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@ -357,7 +357,10 @@ bool kvm_vcpu_id_is_valid(int vcpu_id);
/* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */
unsigned long kvm_arch_vcpu_id(CPUState *cpu);
int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
#ifdef TARGET_I386
#define KVM_HAVE_MCE_INJECTION 1
void kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
#endif
void kvm_arch_init_irq_routing(KVMState *s);