Re: [PATCH] X86: cpu_debug support for VIA / Centaur CPU's

[H. Peter Anvin]

Michael S. Zick wrote:
>> yes, of course - i meant the /debug/x86/cpu/* behavior: it should 
>> either result zeroes, or should return -EINVAL. (probably the 
>> latter)
>>
> 
> Return zeroes - same as hardware case for bits which can't be set.
> Returning -EINVAL might match a specific bit pattern caller is looking for.
> 

It should be -EIO anyway, which is what /dev/cpu/*/msr does.

	-hpa
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