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[PATCH v2 3/8] hvf: Actually set SIG_IPI mask

From: Alexander Graf
Subject: [PATCH v2 3/8] hvf: Actually set SIG_IPI mask
Date: Mon, 30 Nov 2020 04:07:18 +0100

In the hvf init function, we prepare a signal mask for SIG_IPI, but
then fail to set it. This seems to work by chance on some systems,
where SIGUSR2 is already unmasked by default. It fails however on
ARM Big Sur.

So let's set the signal mask as intended.

Signed-off-by: Alexander Graf <agraf@csgraf.de>
 accel/hvf/hvf-cpus.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/accel/hvf/hvf-cpus.c b/accel/hvf/hvf-cpus.c
index 4d1cca9d6e..38559ab649 100644
--- a/accel/hvf/hvf-cpus.c
+++ b/accel/hvf/hvf-cpus.c
@@ -338,6 +338,7 @@ static int hvf_init_vcpu(CPUState *cpu)
     pthread_sigmask(SIG_BLOCK, NULL, &set);
     sigdelset(&set, SIG_IPI);
+    pthread_sigmask(SIG_SETMASK, &set, NULL);
     r = hv_vcpu_create((hv_vcpuid_t *)&cpu->hvf_fd, HV_VCPU_DEFAULT);
     cpu->vcpu_dirty = 1;
2.24.3 (Apple Git-128)

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