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From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org
Subject: Re: [patch, 2.6.10-rc2] fix __flush_tlb*() preemption bug on CONFIG_PREEMPT
Date: Fri, 19 Nov 2004 13:40:05 +1100	[thread overview]
Message-ID: <419D5D05.4020707@yahoo.com.au> (raw)
In-Reply-To: <Pine.LNX.4.58.0411181056550.2222@ppc970.osdl.org>

Linus Torvalds wrote:

> But yes, it may well make perfect sense to say "we have to hold the page 
> table spinlock in order to flush the tlb". Is that actually true right 
> now?
> 

Can we try not to ratify a rule like that? :)

We're somewhat closeish to being able to entirely remove the ptl, so
it might just get awkward if people think they can rely on that rule.

Of course, _if_ holding the ptl is the nicest way to do things in the
mainline kernel then yeah OK I can't argue with that... but if at all
possible... pretty please?

Thanks,
Nick

      reply	other threads:[~2004-11-19  2:48 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-18 12:46 Ingo Molnar
2004-11-18 15:47 ` Linus Torvalds
2004-11-18 19:46   ` Ingo Molnar
2004-11-18 19:05     ` Linus Torvalds
2004-11-19  2:40       ` Nick Piggin [this message]

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