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Re: Syncing CPU caches from userland on MIPS

To: Arnaud Patard <>
Subject: Re: Syncing CPU caches from userland on MIPS
From: Ralf Baechle <>
Date: Wed, 25 Nov 2009 15:01:41 +0000
Cc: Florian Lohoff <>, Aurelien Jarno <>,
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <>
User-agent: Mutt/1.5.19 (2009-01-05)
On Wed, Nov 25, 2009 at 03:39:01PM +0100, Arnaud Patard wrote:

> > Would this only evict stuff from the ICACHE? When trying to execute
> > a just written buffer and with a writeback DCACHE you would need to 
> > explicitly writeback the DCACHE to memory and invalidate the ICACHE.
> we already though about using BCACHE instead of ICACHE only but it
> didn't make any difference. the bug is still there.

That argument is ignored; the kernel will always do whatever it takes to
get the I-cache consistent.


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