Signed-off-by: Christopher Covington <email address hidden>
---
I unfortunately don't have the opportunity to fully test this right
now, but I'm sending it out nevertheless on the off chance that
someone else might.
---
include/qemu/timer.h | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
#else
-/* The host CPU doesn't have an easily accessible cycle counter.
- Just return a monotonically increasing value. This will be
- totally wrong, but hopefully better than nothing. */
+/* The host CPU doesn't have an easily accessible cycle counter, so just return
+ the instruction count. This may make the CPU look like it has an IPC of
+ exactly 1, but that shouldn't cause any functional problems. */
static inline int64_t cpu_get_host_ticks (void)
{
- static int64_t ticks = 0;
- return ticks++;
+ return cpu_get_icount();
}
#endif
--
Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
The previous increment-on-read fallback didn't increment fast
enough for some versions of grub.
https:/ /bugs.launchpad .net/qemu- linaro/ +bug/893208
Signed-off-by: Christopher Covington <email address hidden> qemu/timer. h | 9 ++++-----
---
I unfortunately don't have the opportunity to fully test this right
now, but I'm sending it out nevertheless on the off chance that
someone else might.
---
include/
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/include/ qemu/timer. h b/include/ qemu/timer. h qemu/timer. h qemu/timer. h host_ticks( void)
index d0946cb..60c6dd6 100644
--- a/include/
+++ b/include/
@@ -998,13 +998,12 @@ static inline int64_t cpu_get_
}
#else
-/* The host CPU doesn't have an easily accessible cycle counter.
- Just return a monotonically increasing value. This will be
- totally wrong, but hopefully better than nothing. */
+/* The host CPU doesn't have an easily accessible cycle counter, so just return
+ the instruction count. This may make the CPU look like it has an IPC of
+ exactly 1, but that shouldn't cause any functional problems. */
static inline int64_t cpu_get_host_ticks (void)
{
- static int64_t ticks = 0;
- return ticks++;
+ return cpu_get_icount();
}
#endif
--
Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project