diff options
| author | Alex Bennée <alex.bennee@linaro.org> | 2017-03-01 13:20:02 +0000 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2017-03-09 10:41:38 +0000 |
| commit | 5ee5993001cf32addb86a92e2ae8cb090fbc1462 (patch) | |
| tree | 5c54fe7fef9dddfcc18ec6c56ae2e17903e2b726 /hw | |
| parent | c34c762015fec023c3ea5cf3629cbac462a80973 (diff) | |
sparc/sparc64: grab BQL before calling cpu_check_irqs
IRQ modification is part of device emulation and should be done while
the BQL is held to prevent races when MTTCG is enabled. This adds
assertions in the hw emulation layer and wraps the calls from helpers
in the BQL.
Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/sparc/sun4m.c | 3 | ||||
| -rw-r--r-- | hw/sparc64/sparc64.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/hw/sparc/sun4m.c b/hw/sparc/sun4m.c index 61416a6426..873cd7df9a 100644 --- a/hw/sparc/sun4m.c +++ b/hw/sparc/sun4m.c @@ -142,6 +142,9 @@ void cpu_check_irqs(CPUSPARCState *env) { CPUState *cs; + /* We should be holding the BQL before we mess with IRQs */ + g_assert(qemu_mutex_iothread_locked()); + if (env->pil_in && (env->interrupt_index == 0 || (env->interrupt_index & ~15) == TT_EXTINT)) { unsigned int i; diff --git a/hw/sparc64/sparc64.c b/hw/sparc64/sparc64.c index b3d219c769..4e4fdab065 100644 --- a/hw/sparc64/sparc64.c +++ b/hw/sparc64/sparc64.c @@ -55,6 +55,9 @@ void cpu_check_irqs(CPUSPARCState *env) uint32_t pil = env->pil_in | (env->softint & ~(SOFTINT_TIMER | SOFTINT_STIMER)); + /* We should be holding the BQL before we mess with IRQs */ + g_assert(qemu_mutex_iothread_locked()); + /* TT_IVEC has a higher priority (16) than TT_EXTINT (31..17) */ if (env->ivec_status & 0x20) { return; |