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X-Received-From: 2a00:1450:400c:c0c::230 Subject: [Qemu-devel] [RFC PATCH v1 4/9] target/i386/misc_helper: wrap BQL around another IRQ generator X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mttcg@listserver.greensocs.com, peter.maydell@linaro.org, Eduardo Habkost , nikunj@linux.vnet.ibm.com, a.rigo@virtualopensystems.com, qemu-devel@nongnu.org, cota@braap.org, bobby.prani@gmail.com, =?UTF-8?q?Alex=20Benn=C3=A9e?= , fred.konrad@greensocs.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Anything that calls into HW emulation must be protected by the BQL. Signed-off-by: Alex Benn=C3=A9e Acked-by: Eduardo Habkost Reviewed-by: Richard Henderson --- 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 @@ */ =20 #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 =3D t0 & 0x0f; break; --=20 2.11.0