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Re: [RFC] Page table sharing
- To: Linus Torvalds <torvalds@transmeta.com>
- Subject: Re: [RFC] Page table sharing
- From: Daniel Phillips <phillips@bonn-fries.net>
- Date: Tue, 19 Feb 2002 12:39:15 +0100
- Cc: Rik van Riel <riel@conectiva.com.br>,Hugh Dickins <hugh@veritas.com>, <dmccr@us.ibm.com>,Kernel Mailing List <linux-kernel@vger.kernel.org>,<linux-mm@kvack.org>, Robert Love <rml@tech9.net>,<mingo@redhat.co>, Andrew Morton <akpm@zip.com.au>,<manfred@colorfullife.com>, <wli@holomorphy.com>
- Fake-Sender: owner-linux-mm@kvack.org
- In-Reply-To: <Pine.LNX.4.33.0202181908210.24803-100000@home.transmeta.com>
- Original-Recipient: rfc822;linux-mm-archive@humbolt.geo.uu.nl
- References: <Pine.LNX.4.33.0202181908210.24803-100000@home.transmeta.com>
- Sender: Rik van Riel <riel@nl.linux.org>
On February 19, 2002 04:22 am, Linus Torvalds wrote:
> That still leaves the TLB invalidation issue, but we could handle that
> with an alternate approach: use the same "free_pte_ctx" kind of gathering
> that the zap_page_range() code uses for similar reasons (ie gather up the
> pte entries that you're going to free first, and then do a global
> invalidate later).
I think I'll fall back to unsharing the page table on swapout as Hugh
suggested, until we sort this out.
It's not that bad.
--
Daniel
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