blob: 31c9da491d3840c1885b19ea498acf96e75a4c2a (
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#DPATCHLEVEL=1
---
# vl.c | 5 ++++-
# 1 file changed, 4 insertions(+), 1 deletion(-)
#
Index: qemu/vl.c
===================================================================
--- qemu.orig/vl.c 2007-12-03 15:44:35.000000000 +0000
+++ qemu/vl.c 2007-12-03 15:51:03.000000000 +0000
@@ -1289,12 +1289,15 @@ static void hpet_stop_timer(struct qemu_
static int rtc_start_timer(struct qemu_alarm_timer *t)
{
+ unsigned long current_rtc_freq = 0;
int rtc_fd;
TFR(rtc_fd = open("/dev/rtc", O_RDONLY));
if (rtc_fd < 0)
return -1;
- if (ioctl(rtc_fd, RTC_IRQP_SET, RTC_FREQ) < 0) {
+ ioctl(rtc_fd, RTC_IRQP_READ, ¤t_rtc_freq);
+ if (current_rtc_freq != RTC_FREQ &&
+ ioctl(rtc_fd, RTC_IRQP_SET, RTC_FREQ) < 0) {
fprintf(stderr, "Could not configure '/dev/rtc' to have a 1024 Hz timer. This is not a fatal\n"
"error, but for better emulation accuracy either use a 2.6 host Linux kernel or\n"
"type 'echo 1024 > /proc/sys/dev/rtc/max-user-freq' as root.\n");
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