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From: Dan Malek <dan@embeddededge.com>
To: joakim.tjernlund@lumentis.se
Cc: "Linuxppc-Dev@Lists. Linuxppc. Org" <linuxppc-dev@lists.linuxppc.org>
Subject: Re: _PAGE_HWWRITE missing in pte_mkdirty()?
Date: Fri, 25 Apr 2003 10:56:52 -0400	[thread overview]
Message-ID: <3EA94CB4.8050509@embeddededge.com> (raw)
In-Reply-To: IGEFJKJNHJDCBKALBJLLAEEHFMAA.joakim.tjernlund@lumentis.se


Joakim Tjernlund wrote:

> I noticed that pte_mkdirty() does not set the change bit(HWWRITE) when
> dirtying a page. I think it should. Is there a reason why it doesn't?

A dirty page doesn't necessarily indicate a write enabled page.  Setting
_PAGE_HWWRITE without _PAGE_RW is an error.  On PPC, RW and DIRTY are
software status bits, HWWRITE actually contols write access.

Thanks.


	-- Dan


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

  reply	other threads:[~2003-04-25 14:56 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-04-25 10:33 _PAGE_HWWRITE missing in pte_mkdirty()? Joakim Tjernlund
2003-04-25 14:56 ` Dan Malek [this message]
2003-04-25 15:34   ` Joakim Tjernlund
2003-04-26 23:51     ` Paul Mackerras
2003-04-27  9:31       ` Joakim Tjernlund

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