From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from peculier ([10.10.188.58]) (1188 bytes) by megami.veritas.com via sendmail with P:esmtp/R:smart_host/T:smtp (sender: ) id for ; Sun, 18 Apr 2004 05:36:15 -0700 (PDT) (Smail-3.2.0.101 1997-Dec-17 #15 built 2001-Aug-30) Date: Sun, 18 Apr 2004 13:36:11 +0100 (BST) From: Hugh Dickins Subject: Re: PTE aging, ptep_test_and_clear_young() and TLB In-Reply-To: <20040418122344.A11293@flint.arm.linux.org.uk> Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: owner-linux-mm@kvack.org Return-Path: To: Russell King Cc: William Lee Irwin III , linux-mm@kvack.org List-ID: On Sun, 18 Apr 2004, Russell King wrote: > > So, I think we definitely need the flush there. The available data > so far from Marc appears to confirm this, and the theory surrounding > ASID-based MMUs (which are coming on ARM) also require it. I agree that we need to flush TLB more, that if we keep on ignoring a hint forever then things go awry. I disagree that it needs to be done so immediately, in the young/referenced/accessed case. But go ahead, we can always optimize some of it out later on. Hugh -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org