On Sat, 2007-18-08 at 01:11 +0200, Luca Tettamanti wrote: > plain text document attachment (clock-hpet) > Linux operates the HPET timer in legacy replacement mode, which means that > the periodic interrupt of the CMOS RTC is not delivered (qemu won't be able > to use /dev/rtc). Add support for HPET (/dev/hpet) as a replacement for the > RTC; the periodic interrupt is delivered via SIGIO and is handled in the > same way as the RTC timer. > > Signed-off-by: Luca Tettamanti <[EMAIL PROTECTED]>
I must be missing something silly here.. should I be able to open more than one instance of qemu with -clock hpet? Because upon invoking a second instance of qemu HPET_IE_ON fails. I also tried running the example in the kernel docs under Documentation/hpet.txt [EMAIL PROTECTED] [/home/mkent]# ./demo poll /dev/hpet 1 1000 -hpet: executing poll hpet_poll: info.hi_flags 0x0 hpet_poll: expired time = 0x8 hpet_poll: revents = 0x1 hpet_poll: data 0x1 <in another term> [EMAIL PROTECTED] [/home/mkent]# ./demo poll /dev/hpet 1 1000 -hpet: executing poll hpet_poll: info.hi_flags 0x0 hpet_poll, HPET_IE_ON failed This is on 2.6.23-rc3 x86_64 with the patch-2.6.23-rc3-hrt2.patch hrtimers patch. -- Matthew Kent <[EMAIL PROTECTED]> http://magoazul.com
