[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH] Do not set RTC frequency if already set
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [PATCH] Do not set RTC frequency if already set |
Date: |
Mon, 28 Jan 2008 20:28:23 +0100 |
User-agent: |
Mutt/1.5.17 (2007-12-11) |
Do not set RTC frequency to 1024 or warn about this if it has already
been set to the correct value.
---
vl.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/vl.c b/vl.c
index 8c63ad9..2d494c5 100644
--- a/vl.c
+++ b/vl.c
@@ -1307,11 +1307,14 @@ static void hpet_stop_timer(struct qemu_alarm_timer *t)
static int rtc_start_timer(struct qemu_alarm_timer *t)
{
int rtc_fd;
+ unsigned long current_rtc_freq = 0;
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");
--
.''`. Aurelien Jarno | GPG: 1024D/F1BCDB73
: :' : Debian developer | Electrical Engineer
`. `' address@hidden | address@hidden
`- people.debian.org/~aurel32 | www.aurel32.net
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Qemu-devel] [PATCH] Do not set RTC frequency if already set,
Aurelien Jarno <=