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SubjectRe: VM fixes [4/4]
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
#


-- wli
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