From: Thomas Huth <th...@redhat.com>
When using u-boot as firmware with the taihu board, QEMU aborts with
this assertion:
ERROR:../accel/tcg/tcg-accel-ops.c:79:tcg_handle_interrupt: assertion failed:
(qemu_mutex_iothread_locked())
Running QEMU with "-d in_asm" shows that the crash happens when writing
to SPR 0x3f2, so we are missing to lock the iothread in the code path
here.
Signed-off-by: Thomas Huth <th...@redhat.com>
Message-Id: <20211006071140.565952-1-th...@redhat.com>
Reviewed-by: Cédric Le Goater <c...@kaod.org>
Tested-by: Cédric Le Goater <c...@kaod.org>
Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
---
hw/ppc/ppc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/hw/ppc/ppc.c b/hw/ppc/ppc.c
index a724b0bb5e..e8127599c9 100644
--- a/hw/ppc/ppc.c
+++ b/hw/ppc/ppc.c
@@ -336,6 +336,8 @@ void store_40x_dbcr0(CPUPPCState *env, uint32_t val)
{
PowerPCCPU *cpu = env_archcpu(env);
+ qemu_mutex_lock_iothread();
+
switch ((val >> 28) & 0x3) {
case 0x0:
/* No action */
@@ -353,6 +355,8 @@ void store_40x_dbcr0(CPUPPCState *env, uint32_t val)
ppc40x_system_reset(cpu);
break;
}
+
+ qemu_mutex_unlock_iothread();
}
/* PowerPC 40x internal IRQ controller */
--
2.31.1
