Re: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata

[Andrew Morton]

Andi Kleen <ak@xxxxxxx> wrote:
>
>  +static int is_prefetch(struct pt_regs *regs, unsigned long addr)

Can we make this code go away if the configured CPU is, say, Intel?
(I couldn't find a sane CONFIG_ setting to use for this).

It might be vaguely interesting to add a user-visible counter for this
event? If someone somehow comes up with an application which hits the fault
frequently they will take a big performance hit.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/