From: Linus Torvalds <torvalds@osdl.org>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>, Andi Kleen <ak@suse.de>,
Linux Memory Management <linux-mm@kvack.org>,
Hugh Dickins <hugh@veritas.com>, Andrew Morton <akpm@osdl.org>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH 4/10] alternate 4-level page tables patches
Date: Sat, 18 Dec 2004 21:23:06 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.58.0412182121020.22750@ppc970.osdl.org> (raw)
In-Reply-To: <20041219020823.GP771@holomorphy.com>
On Sat, 18 Dec 2004, William Lee Irwin III wrote:
>
> For x86-style MMU's you could literally not bother flushing the TLB at
> all, since you'll just switch to another set of pagetables.
Yes, we could avoid the flush entirely, since we've already "flushed" the
TLB by virtue of having switched to another TLB.
And it's in no way x86-specific:
> The stale translations can't be left around for ASID-tagged TLB's, lest
> the next user of the ASID inherit them.
We need to (and do) flush the TLB on ASID re-use, regardless. That's true
in any case.
Linus
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next prev parent reply other threads:[~2004-12-19 5:23 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-18 6:55 [RFC][PATCH 0/10] " Nick Piggin
2004-12-18 6:55 ` [PATCH 1/10] " Nick Piggin
2004-12-18 6:56 ` [PATCH 2/10] " Nick Piggin
2004-12-18 6:56 ` [PATCH 3/10] " Nick Piggin
2004-12-18 6:57 ` [PATCH 4/10] " Nick Piggin
2004-12-18 6:58 ` [PATCH 5/10] " Nick Piggin
2004-12-18 6:58 ` [PATCH 6/10] " Nick Piggin
2004-12-18 6:59 ` [PATCH 7/10] " Nick Piggin
2004-12-18 7:00 ` [PATCH 8/10] " Nick Piggin
2004-12-18 7:00 ` [PATCH 9/10] " Nick Piggin
2004-12-18 7:01 ` [PATCH 10/10] " Nick Piggin
2004-12-18 7:31 ` Andi Kleen
2004-12-18 7:46 ` Nick Piggin
2004-12-18 8:08 ` Andrew Morton
2004-12-18 9:48 ` Andi Kleen
2004-12-18 19:06 ` Linus Torvalds
2004-12-20 17:43 ` Andi Kleen
2004-12-20 17:47 ` Randy.Dunlap
2004-12-20 18:08 ` Linus Torvalds
2004-12-20 18:15 ` Linus Torvalds
2004-12-20 18:19 ` Andi Kleen
2004-12-20 18:47 ` Linus Torvalds
2004-12-20 18:52 ` Linus Torvalds
2004-12-20 18:59 ` Andi Kleen
2004-12-20 18:57 ` Randy.Dunlap
2004-12-18 9:05 ` [PATCH 4/10] " Nick Piggin
2004-12-18 9:50 ` Andi Kleen
2004-12-18 10:06 ` Nick Piggin
2004-12-18 10:11 ` Andi Kleen
2004-12-18 10:22 ` Nick Piggin
2004-12-18 10:29 ` Nick Piggin
2004-12-18 11:06 ` William Lee Irwin III
2004-12-18 11:17 ` Nick Piggin
2004-12-18 11:32 ` William Lee Irwin III
2004-12-18 11:55 ` Nick Piggin
2004-12-18 12:46 ` William Lee Irwin III
2004-12-18 12:48 ` William Lee Irwin III
2004-12-19 0:05 ` Nick Piggin
2004-12-19 0:20 ` William Lee Irwin III
2004-12-19 0:38 ` Nick Piggin
2004-12-19 1:01 ` William Lee Irwin III
2004-12-19 1:31 ` Linus Torvalds
2004-12-19 2:08 ` William Lee Irwin III
2004-12-19 2:26 ` Nick Piggin
2004-12-19 5:23 ` Linus Torvalds [this message]
2004-12-19 6:02 ` William Lee Irwin III
2004-12-19 18:17 ` Linus Torvalds
2004-12-20 1:00 ` William Lee Irwin III
2004-12-18 10:45 ` William Lee Irwin III
2004-12-18 10:58 ` Nick Piggin
2004-12-19 0:07 ` [RFC][PATCH 0/10] " Hugh Dickins
2004-12-19 0:33 ` Nick Piggin
2004-12-20 18:04 ` Andi Kleen
2004-12-20 18:40 ` Linus Torvalds
2004-12-20 18:53 ` Andi Kleen
2004-12-21 0:04 ` Linus Torvalds
2004-12-21 0:22 ` Andi Kleen
2004-12-21 0:43 ` Linus Torvalds
2004-12-21 0:47 ` Nick Piggin
2004-12-21 2:55 ` Hugh Dickins
2004-12-21 3:21 ` Nick Piggin
2004-12-21 3:47 ` Linus Torvalds
2004-12-21 3:56 ` Linus Torvalds
2004-12-21 4:04 ` Nick Piggin
2004-12-21 4:08 ` Nick Piggin
2004-12-21 9:36 ` Andi Kleen
2004-12-21 10:13 ` Hugh Dickins
2004-12-21 10:59 ` Nick Piggin
2004-12-21 17:36 ` Linus Torvalds
2004-12-21 20:19 ` Andi Kleen
2004-12-21 23:49 ` Nick Piggin
2004-12-22 10:38 ` Andi Kleen
2004-12-22 11:19 ` Nick Piggin
2004-12-22 11:23 ` Nick Piggin
2004-12-22 18:07 ` Andi Kleen
2004-12-30 21:24 ` Nick Piggin
2004-12-21 10:52 ` Nick Piggin
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