From: Alex Bennée Date: Thu, 30 Mar 2017 15:04:09 +0000 (+0100) Subject: target/i386/misc_helper: wrap BQL around another IRQ generator X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b4e79a502ff2ac06a21c45f598870de807eb5d20;p=qemu.git target/i386/misc_helper: wrap BQL around another IRQ generator Anything that calls into HW emulation must be protected by the BQL. Signed-off-by: Alex Bennée Reviewed-by: Richard Henderson Acked-by: Eduardo Habkost --- diff --git a/target/i386/misc_helper.c b/target/i386/misc_helper.c index ca2ea09f54..628f64aad5 100644 --- a/target/i386/misc_helper.c +++ b/target/i386/misc_helper.c @@ -18,6 +18,7 @@ */ #include "qemu/osdep.h" +#include "qemu/main-loop.h" #include "cpu.h" #include "exec/helper-proto.h" #include "exec/exec-all.h" @@ -156,7 +157,9 @@ void helper_write_crN(CPUX86State *env, int reg, target_ulong t0) break; case 8: if (!(env->hflags2 & HF2_VINTR_MASK)) { + qemu_mutex_lock_iothread(); cpu_set_apic_tpr(x86_env_get_cpu(env)->apic_state, t0); + qemu_mutex_unlock_iothread(); } env->v_tpr = t0 & 0x0f; break;