From 41931c0137eeeff1303f254ed610217c0fa00313 Mon Sep 17 00:00:00 2001 From: Goran Ferenc Date: Mon, 11 Feb 2019 16:48:39 +0100 Subject: target/mips: hold BQL in mips_vpe_wake() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Miodrag Dinic Signed-off-by: Aleksandar Markovic Acked-by: Alex Bennée Reviewed-by: Alex Bennée --- target/mips/op_helper.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'target/mips') diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c index 8c53b3b72d..0f272a5b93 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 . */ #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) -- cgit v1.2.3