Re: VM fixes [4/4]

[William Lee Irwin III]

On Fri, 24 Dec 2004 19:22:19 +0100 Andrea Arcangeli <andrea@xxxxxxx> 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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