On Mon, Sep 21, 2015 at 9:36 AM, Linus Torvalds
<torva...@linux-foundation.org> wrote:
> On Mon, Sep 21, 2015 at 1:46 AM, Ingo Molnar <mi...@kernel.org> wrote:
>>
>> Linus, what's your preference?
>
> So quite frankly, is there any reason we don't just implement
> native_read_msr() as just
>
> unsigned long long native_read_msr(unsigned int msr)
> {
> int err;
> unsigned long long val;
>
> val = native_read_msr_safe(msr, &err);
> WARN_ON_ONCE(err);
> return val;
> }
>
> Note: no inline, no nothing. Just put it in arch/x86/lib/msr.c, and be
> done with it. I don't see the downside.
In the interest of sanity, I want to drop the "native_", too, since
there appear to be few or no good use cases for native_read_msr as
such. I'm tempted to add new functions read_msr and write_msr that
forward to rdmsrl_safe and wrmsrl_safe.
It looks like the msr helpers are every bit as bad as the TSC helpers
used to be :(
--Andy
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