Operating system question

Rabeeh Khoury rabeeh at il.marvell.com
Wed Oct 1 04:53:12 EST 2003


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


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





More information about the Linuxppc-embedded mailing list