After exchange cpufixup after cache_on,
In s2885, it can clear the memory quite faster.
YH.
-----邮件原件----- 发件人: Li-Ta Lo [mailto:ollie@lanl.gov] 发送时间: 2004年3月26日 8:55 收件人: Eric W. Biederman 抄送: LinuxBIOS 主题: Re: Cache On and ECC clear
On Fri, 2004-03-26 at 01:06, Eric W. Biederman wrote:
Li-Ta Lo ollie@lanl.gov writes:
Eric,
I tried to call cache_on() first than the cpufixeup() in cpu.c to fix the "slow ecc clear" problem. It still works that way. Is there any reason we can't do this ?
Hmm. I don't see this. I have the cache on and things clear quite quickly. I may have a slightly different calling order then the standard tree.
Ollie can you compare what is checked into the tree with the last release I did for Lightning? It works there...
In LNXI tree it's like:
/* Turn on caching if we haven't already */ cache_on(mem);
display_cpuid(); mtrr_check(); #if 1 /* some cpus need a fixup done. This is the hook for doing that. */ cpufixup(mem); #endif
and in the CVS tree it's:
/* some cpus need a fixup done. This is the hook for doing that. */ cpufixup(mem);
/* Turn on caching if we haven't already */ cache_on(mem);
display_cpuid(); mtrr_check();
Ollie
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