Re: [Qemu-devel] [PATCH 32/35] target/i386/kvm: do not acquire the BQL to call cpu_reset_interrupt

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On 9/17/18 6:31 PM, Emilio G. Cota wrote:
> From: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> 
> It's not needed anymore.
> 
> Cc: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
> Cc: Richard Henderson <rth@xxxxxxxxxxx>
> Cc: Eduardo Habkost <ehabkost@xxxxxxxxxx>
> Cc: kvm@xxxxxxxxxxxxxxx
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Signed-off-by: Emilio G. Cota <cota@xxxxxxxxx>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>

> ---
>  target/i386/kvm.c | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/target/i386/kvm.c b/target/i386/kvm.c
> index e40c8d5461..41c4830be8 100644
> --- a/target/i386/kvm.c
> +++ b/target/i386/kvm.c
> @@ -3007,9 +3007,7 @@ void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
>      /* Inject NMI */
>      if (interrupt_request & (CPU_INTERRUPT_NMI | CPU_INTERRUPT_SMI)) {
>          if (interrupt_request & CPU_INTERRUPT_NMI) {
> -            qemu_mutex_lock_iothread();
>              cpu_reset_interrupt(cpu, CPU_INTERRUPT_NMI);
> -            qemu_mutex_unlock_iothread();
>              DPRINTF("injected NMI\n");
>              ret = kvm_vcpu_ioctl(cpu, KVM_NMI);
>              if (ret < 0) {
> @@ -3018,9 +3016,7 @@ void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
>              }
>          }
>          if (atomic_read(&cpu->interrupt_request) & CPU_INTERRUPT_SMI) {
> -            qemu_mutex_lock_iothread();
>              cpu_reset_interrupt(cpu, CPU_INTERRUPT_SMI);
> -            qemu_mutex_unlock_iothread();
>              DPRINTF("injected SMI\n");
>              ret = kvm_vcpu_ioctl(cpu, KVM_SMI);
>              if (ret < 0) {
> 



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