Messages in this thread | | | Date | Wed, 05 May 2010 17:26:40 +0300 | From | Avi Kivity <> | Subject | Re: [PATCH 4/4] KVM MMU: do not intercept invlpg if 'oos_shadow' is disabled |
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On 05/05/2010 03:54 PM, Xiao Guangrong wrote: > > Avi Kivity wrote: > >> On 04/30/2010 12:05 PM, Xiao Guangrong wrote: >> >>> If 'oos_shadow' == 0, intercepting invlpg command is really >>> unnecessary. >>> >>> And it's good for us to compare the performance between enable >>> 'oos_shadow' >>> and disable 'oos_shadow' >>> >>> @@ -74,8 +74,9 @@ static int dbg = 0; >>> module_param(dbg, bool, 0644); >>> #endif >>> >>> -static int oos_shadow = 1; >>> +int __read_mostly oos_shadow = 1; >>> module_param(oos_shadow, bool, 0644); >>> +EXPORT_SYMBOL_GPL(oos_shadow); >>> >>> >> Please rename to kvm_oos_shadow to reduce potential for conflict with >> other global names. >> >> But really, this is a debug option, I don't expect people to run with >> oos_shadow=0, so there's not much motivation to optimize it. >> > Agreed, but, 'oos_shadow' option is document in Documentation/kernel-parameters.txt, > if it's just a debug option, i think we do better not document it. >
It has to be documented, otherwise people complain :)
Anyway the variable name and the option name don't have to be the same (I think).
-- error compiling committee.c: too many arguments to function
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