From: Linus Torvalds <torvalds@transmeta.com>
To: "Stephen C. Tweedie" <sct@redhat.com>
Cc: Jamie Lokier <lk@tantalophile.demon.co.uk>,
Ben LaHaise <bcrl@redhat.com>,
linux-mm@kvack.org
Subject: Re: [PATCH/RFC] fix missing tlb flush on x86 smp+pae
Date: Fri, 16 Mar 2001 09:10:49 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.31.0103160906490.17122-100000@penguin.transmeta.com> (raw)
In-Reply-To: <20010316133445.N30889@redhat.com>
On Fri, 16 Mar 2001, Stephen C. Tweedie wrote:
>
> On Intel, yes. The PAE case is a special case: we lose one bit of
> addressing for each level of page table because the pte width has
> doubled, so the two-level page table is short of two bits of address
> coverage in PAE mode.
I would almost tend to suggest that we just always allocate the PAE. Do it
at the same time we allocate the page directory - make PAE use
"get_pgd_slow()", and just always allocate the 3 pages. Much simpler.
Linus
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next prev parent reply other threads:[~2001-03-16 17:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-15 19:50 Ben LaHaise
2001-03-16 13:12 ` Jamie Lokier
2001-03-16 13:34 ` Stephen C. Tweedie
2001-03-16 17:10 ` Linus Torvalds [this message]
2001-03-16 17:29 ` Stephen C. Tweedie
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