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From: H. Peter Anvin on 13 Feb 2010 03:20
On 02/12/2010 11:13 PM, Avi Kivity wrote:
> +#ifndef CONFIG_X86_64
> + "i" (-RWSEM_WAITING_BIAS)
> +#else
> + "r" (-RWSEM_WAITING_BIAS)
> #endif
> + : "memory", "cc");

Using an "er" constraint here should work on both architectures.

-hpa

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H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.

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From: Avi Kivity on 13 Feb 2010 03:40
On 02/13/2010 10:16 AM, H. Peter Anvin wrote:
> On 02/12/2010 11:13 PM, Avi Kivity wrote:
>
>> +#ifndef CONFIG_X86_64
>> + "i" (-RWSEM_WAITING_BIAS)
>> +#else
>> + "r" (-RWSEM_WAITING_BIAS)
>> #endif
>> + : "memory", "cc");
>>
> Using an "er" constraint here should work on both architectures.
>
>

Right. v2 to follow.

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Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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