Re: [PATCH 19/23] x86/oprofile: use 64 bit wrmsr functions

[Andi Kleen]

Robert Richter <robert.richter@xxxxxxx> writes:
>  			val |= op_x86_get_ctrl(model, &counter_config[i]);
> @@ -251,7 +252,7 @@ static int op_amd_check_ctrs(struct pt_regs * const regs,
>  		if (val & OP_CTR_OVERFLOW)
>  			continue;
>  		oprofile_add_sample(regs, i);
> -		wrmsr(msrs->counters[i].addr, -(unsigned int)reset_value[i], -1);
> +		wrmsrl(msrs->counters[i].addr, -(s64)reset_value[i]);

These are not equivalent on 64bit because reset_value is a long,
so the new code doesn't 32->64 extend anymore. You would
need a (s32) cast, not a (s64)

I don't think if it causes real problems, but it looks suspicious.

That's all over in multiple files.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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