linux-kernel - Re: [RFC/PATCH] Use mmu_gather for fork() instead of flush_tlb

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Message-Id: <1183974458.5961.42.camel@localhost.localdomain>
Date:	Mon, 09 Jul 2007 19:47:38 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Nick Piggin <nickpiggin@...oo.com.au>
Cc:	linux-mm@...ck.org,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [RFC/PATCH] Use mmu_gather for fork() instead of flush_tlb_mm()

On Mon, 2007-07-09 at 19:29 +1000, Nick Piggin wrote:
> They could just #define one to the other though, there are only a
> small
> number of them. Is there a downside to not making them distinct? i386
> for example probably would just keep doing a tlb flush for fork and
> not
> want to worry about touching the tlb gather stuff.

But the tlb gather stuff just does ... a flush_tlb_mm() on x86 :-)

I really think it's the right API

Ben.


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