From: Rabeeh Khoury <rabeeh@il.marvell.com>
To: linuxppc-embedded@lists.linuxppc.org,
ppcboot-users@lists.sourceforge.net
Subject: Operating system question
Date: Tue, 30 Sep 2003 21:53:12 +0300 [thread overview]
Message-ID: <3F79D118.9040208@il.marvell.com> (raw)
Hi All,
I have a question withregards WIMG MMU settings of page tables / BATs.
Is there any reason why setting the M bit (coherency) on an IO
region (cache inhibited and guarded) ?
Does anyone expect what is the result of doing so ?
I'v seen in the Linux code for PPC that on IO region the M bit is never
set - but what about firmwares ? other operating system ?
Thank you,
Rabeeh
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reply other threads:[~2003-09-30 18:53 UTC|newest]
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