[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH 1/4] hw/i386/pc: hold the BQL when calling cpu_get_t
|
From: |
Emilio G. Cota |
|
Subject: |
[Qemu-devel] [PATCH 1/4] hw/i386/pc: hold the BQL when calling cpu_get_ticks |
|
Date: |
Mon, 13 Aug 2018 21:37:58 -0400 |
Signed-off-by: Emilio G. Cota <address@hidden>
---
hw/i386/pc.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 83a444472b..7371cd9960 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -158,7 +158,18 @@ static uint64_t ioportF0_read(void *opaque, hwaddr addr,
unsigned size)
/* TSC handling */
uint64_t cpu_get_tsc(CPUX86State *env)
{
- return cpu_get_ticks();
+ uint64_t ret;
+ bool locked;
+
+ locked = qemu_mutex_iothread_locked();
+ if (!locked) {
+ qemu_mutex_lock_iothread();
+ }
+ ret = cpu_get_ticks();
+ if (!locked) {
+ qemu_mutex_unlock_iothread();
+ }
+ return ret;
}
/* IRQ handling */
--
2.17.1