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Date: Tue, 05 Aug 2008 20:54:45 -0700 From: Max Krasnyansky <maxk@...lcomm.com> To: Jeff Chua <jeff.chua.linux@...il.com> CC: lkml <linux-kernel@...r.kernel.org> Subject: Re: 2.6.27rc1 cannot boot more than 8CPUs Jeff Chua wrote: > On Wed, Aug 6, 2008 at 11:31 AM, Max Krasnyansky <maxk@...lcomm.com> wrote: >> You could try booting CONFIG_NR_CPUS=16 with maxcpus=8 (kernel command line option). >> If it boots you can then try bringing the rest of the cpus online manually > > Ok, booted with CONFIG_NR_CPUS=16 with maxcpus=8, but can't find the > rest of the CPUs. > > I can only find cpu0 to cpu7 ... > > > drwxr-xr-x 4 root root 0 Aug 6 19:38 cpu0 > drwxr-xr-x 4 root root 0 Aug 6 19:38 cpu1 > drwxr-xr-x 4 root root 0 Aug 6 19:38 cpu2 > drwxr-xr-x 4 root root 0 Aug 6 19:38 cpu3 > drwxr-xr-x 4 root root 0 Aug 6 19:38 cpu4 > drwxr-xr-x 4 root root 0 Aug 6 19:38 cpu5 > drwxr-xr-x 4 root root 0 Aug 6 19:38 cpu6 > drwxr-xr-x 4 root root 0 Aug 6 19:38 cpu7 > -r--r--r-- 1 root root 4096 Aug 6 19:41 online > -r--r--r-- 1 root root 4096 Aug 6 19:39 possible > -r--r--r-- 1 root root 4096 Aug 6 19:38 present > -rw-r--r-- 1 root root 4096 Aug 6 19:38 sched_mc_power_savings > > # cat online > 0-7 > # cat possible > 0-23 > # cat present > 0-7 Are you running 32-bit kernel ? Max -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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