From: Goran Ferenc <[email protected]> Hold BQL whenever mips_vpe_wake() is invoked.
Without this patch, MIPS MT with MTTCG enabled triggers an abort in tcg_handle_interrupt() due to an unlocked access to cpu_interrupt(). This patch makes sure that the BQL is held in this case. Signed-off-by: Goran Ferenc <[email protected]> Signed-off-by: Miodrag Dinic <[email protected]> Signed-off-by: Aleksandar Markovic <[email protected]> Acked-by: Alex Bennée <[email protected]> Reviewed-by: Alex Bennée <[email protected]> --- target/mips/op_helper.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c index 8c53b3b..0f272a5 100644 --- a/target/mips/op_helper.c +++ b/target/mips/op_helper.c @@ -17,6 +17,7 @@ * License along with this library; if not, see <http://www.gnu.org/licenses/>. */ #include "qemu/osdep.h" +#include "qemu/main-loop.h" #include "cpu.h" #include "internal.h" #include "qemu/host-utils.h" @@ -638,7 +639,9 @@ static inline void mips_vpe_wake(MIPSCPU *c) /* Don't set ->halted = 0 directly, let it be done via cpu_has_work because there might be other conditions that state that c should be sleeping. */ + qemu_mutex_lock_iothread(); cpu_interrupt(CPU(c), CPU_INTERRUPT_WAKE); + qemu_mutex_unlock_iothread(); } static inline void mips_vpe_sleep(MIPSCPU *cpu) -- 2.7.4
