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[Qemu-devel] /dev/rtc issues

From: Lorenzo Campedelli
Subject: [Qemu-devel] /dev/rtc issues
Date: Sat, 11 Aug 2007 21:38:57 +0200
User-agent: Thunderbird (X11/20070719)

Like others have reported to the list I'm getting:

Could not configure '/dev/rtc' to have a 1024 Hz timer. This is not a fatal
error, but for better emulation accuracy either use a 2.6 host Linux kernel or
type 'echo 1024 > /proc/sys/dev/rtc/max-user-freq' as root.

and then

address@hidden ~]# echo 1024 > /proc/sys/dev/rtc/max-user-freq
-bash: /proc/sys/dev/rtc/max-user-freq: No such file or directory

address@hidden ~]# uname -a
Linux arturo #1 SMP Wed Aug 1 15:15:33 EDT 2007 i686 i686 i386 GNU/Linux

I guess this is due to changes in the latest host kernel, in particular to Dyntick, introduced in 2.6.21 (see http://lwn.net/Articles/223185/).

Does anybody know whether/how this affects qemu and kqemu operation?

Thanks in advance,

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