Revision b5a23ad4 vl.c

b/vl.c
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static int rtc_start_timer(struct qemu_alarm_timer *t)
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{
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    int rtc_fd;
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    unsigned long current_rtc_freq = 0;
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    TFR(rtc_fd = open("/dev/rtc", O_RDONLY));
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    if (rtc_fd < 0)
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        return -1;
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    if (ioctl(rtc_fd, RTC_IRQP_SET, RTC_FREQ) < 0) {
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    ioctl(rtc_fd, RTC_IRQP_READ, &current_rtc_freq);
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    if (current_rtc_freq != RTC_FREQ &&
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        ioctl(rtc_fd, RTC_IRQP_SET, RTC_FREQ) < 0) {
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        fprintf(stderr, "Could not configure '/dev/rtc' to have a 1024 Hz timer. This is not a fatal\n"
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                "error, but for better emulation accuracy either use a 2.6 host Linux kernel or\n"
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                "type 'echo 1024 > /proc/sys/dev/rtc/max-user-freq' as root.\n");

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