Re: [PATCH](retry 2) Re: invalidate caches before going intosuspend

From: Arjan van de Ven
Date: Wed Aug 13 2008 - 14:43:05 EST


On Wed, 13 Aug 2008 13:33:17 -0500
Mark Langsdorf <mark.langsdorf@xxxxxxx> wrote:
> + /* mask all interrupts, flush any and all caches, and halt */
> + if (cpu_has_clflush)
> + wbinvd_halt();
> + else
> + while (1)
> + halt();
> }

I like the asm version .. but this code makes me blink.
when you HAVE clflush you do wbinvd.
yeah I know it's correct but... it reads wonky ;)
also.. can we move that check into the wbinvd_halt() itself, so that
the callers don't need to care what is used to select it ?

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