From 215581bdf1659c80645125df56cd2daa40de3d97 Mon Sep 17 00:00:00 2001 From: Aleksandar Markovic Date: Mon, 11 Feb 2019 16:28:16 +0100 Subject: hw/mips_int: hold BQL for all interrupt requests Make sure BQL is held for all interrupt requests. For MTTCG-enabled configurations, handling soft and hard interrupts between vCPUs must be properly locked. By acquiring BQL, make sure all paths triggering an IRQ are synchronized. Signed-off-by: Miodrag Dinic Signed-off-by: Aleksandar Markovic Acked-by: Alex Bennée Reviewed-by: Alex Bennée --- target/mips/op_helper.c | 21 +++------------------ 1 file changed, 3 insertions(+), 18 deletions(-) (limited to 'target/mips/op_helper.c') diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c index 943a7ea579..8c53b3b72d 100644 --- a/target/mips/op_helper.c +++ b/target/mips/op_helper.c @@ -17,7 +17,6 @@ * 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" @@ -905,11 +904,7 @@ target_ulong helper_mftc0_tcschefback(CPUMIPSState *env) target_ulong helper_mfc0_count(CPUMIPSState *env) { - int32_t count; - qemu_mutex_lock_iothread(); - count = (int32_t) cpu_mips_get_count(env); - qemu_mutex_unlock_iothread(); - return count; + return (int32_t)cpu_mips_get_count(env); } target_ulong helper_mfc0_saar(CPUMIPSState *env) @@ -1594,9 +1589,7 @@ void helper_mtc0_hwrena(CPUMIPSState *env, target_ulong arg1) void helper_mtc0_count(CPUMIPSState *env, target_ulong arg1) { - qemu_mutex_lock_iothread(); cpu_mips_store_count(env, arg1); - qemu_mutex_unlock_iothread(); } void helper_mtc0_saari(CPUMIPSState *env, target_ulong arg1) @@ -1685,9 +1678,7 @@ void helper_mttc0_entryhi(CPUMIPSState *env, target_ulong arg1) void helper_mtc0_compare(CPUMIPSState *env, target_ulong arg1) { - qemu_mutex_lock_iothread(); cpu_mips_store_compare(env, arg1); - qemu_mutex_unlock_iothread(); } void helper_mtc0_status(CPUMIPSState *env, target_ulong arg1) @@ -1741,9 +1732,7 @@ void helper_mtc0_srsctl(CPUMIPSState *env, target_ulong arg1) void helper_mtc0_cause(CPUMIPSState *env, target_ulong arg1) { - qemu_mutex_lock_iothread(); cpu_mips_store_cause(env, arg1); - qemu_mutex_unlock_iothread(); } void helper_mttc0_cause(CPUMIPSState *env, target_ulong arg1) @@ -2587,16 +2576,12 @@ target_ulong helper_rdhwr_synci_step(CPUMIPSState *env) target_ulong helper_rdhwr_cc(CPUMIPSState *env) { - int32_t count; check_hwrena(env, 2, GETPC()); #ifdef CONFIG_USER_ONLY - count = env->CP0_Count; + return env->CP0_Count; #else - qemu_mutex_lock_iothread(); - count = (int32_t)cpu_mips_get_count(env); - qemu_mutex_unlock_iothread(); + return (int32_t)cpu_mips_get_count(env); #endif - return count; } target_ulong helper_rdhwr_ccres(CPUMIPSState *env) -- cgit v1.2.3-55-g7522