Messages in this thread | | | Date | Fri, 24 Dec 2004 15:52:05 -0800 | From | William Lee Irwin III <> | Subject | Re: VM fixes [4/4] |
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On Fri, 24 Dec 2004 19:22:19 +0100 Andrea Arcangeli <andrea@suse.de> wrote: >>> If those old cpus really supported smp in linux, then fixing this bit is >>> trivial, just change it to short. Do they support short at least?
On Fri, Dec 24, 2004 at 12:55:04PM -0800, David S. Miller wrote: >> No, they do not. The smallest atomic unit is one 32-bit word. >> And yes there are SMP systems using these chips.
On Fri, Dec 24, 2004 at 01:25:13PM -0800, William Lee Irwin III wrote: > Would systems described as ev56 by /proc/cpuinfo have such chips?
I had this one in particular in mind:
# cat /proc/cpuinfo cpu : Alpha cpu model : EV56 cpu variation : 7 cpu revision : 0 cpu serial number : system type : Rawhide system variation : Tincup system revision : 0 system serial number : NI93009695 cycle frequency [Hz] : 532819266 est. timer frequency [Hz] : 1200.00 page size [bytes] : 8192 phys. address bits : 40 max. addr. space # : 127 BogoMIPS : 910.04 kernel unaligned acc : 29 (pc=fffffc00003158a8,va=fffffc004dafbd51) user unaligned acc : 0 (pc=0,va=0) platform string : AlphaServer 1200 5/533 4MB cpus detected : 2 cpus active : 2 cpu active mask : 0000000000000003 L1 Icache : 8K, 1-way, 32b line L1 Dcache : 8K, 1-way, 32b line L2 cache : 96K, 3-way, 64b line L3 cache : 4096K, 1-way, 64b line #
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