From: Grant Grundler <grundler@parisc-linux.org>
To: Joel Soete <soete.joel@tiscali.be>
Cc: parisc-linux@parisc-linux.org
Subject: Re: [parisc-linux] flush_tlb_all_local:
Date: Sun, 12 Oct 2003 22:14:48 -0600 [thread overview]
Message-ID: <20031013041448.GD2467@colo.lackof.org> (raw)
In-Reply-To: <20031013031258.GC2467@colo.lackof.org>
On Sun, Oct 12, 2003 at 09:12:58PM -0600, Grant Grundler wrote:
> On Sun, Oct 12, 2003 at 04:07:50PM +0000, Joel Soete wrote:
> > Why twice 'mtctl %r0, %cr17'?
>
> Good question. No clue. Looks like a brain fart since clearing it
> once should work unless there's a weird bug. I'll remove it.
definitely not a brainfart. Read PA2.0 arch book (section 2) where
it talks about cr17/cr18. CR17 is two registers and writing it twice
clear both head/tail of the IIAS. Just like cr18 is also written twice.
sorry for not catching that the first time around.
grant
next prev parent reply other threads:[~2003-10-13 4:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-12 16:07 [parisc-linux] flush_tlb_all_local: Joel Soete
2003-10-13 3:12 ` Grant Grundler
2003-10-13 4:14 ` Grant Grundler [this message]
2003-10-13 18:57 ` John David Anglin
2003-10-13 19:44 ` Matthew Wilcox
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