[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [RFC PATCH v1 4/9] target/i386/misc_helper: wrap BQL around
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [RFC PATCH v1 4/9] target/i386/misc_helper: wrap BQL around another IRQ generator |
Date: |
Mon, 3 Apr 2017 13:45:19 +0100 |
Anything that calls into HW emulation must be protected by the BQL.
Signed-off-by: Alex Bennée <address@hidden>
---
target/i386/misc_helper.c | 3 +++
1 file changed, 3 insertions(+)
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;
--
2.11.0