From: Matt Mackall <mpm@selenic.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: gdb@sourceware.org, linuxppc-embedded@ozlabs.org
Subject: Re: Apparent kernel bug with GDB on ppc405
Date: Fri, 26 Oct 2007 09:41:34 -0500 [thread overview]
Message-ID: <20071026144134.GW19691@waste.org> (raw)
In-Reply-To: <1193369005.7018.46.camel@pasglop>
On Fri, Oct 26, 2007 at 01:23:25PM +1000, Benjamin Herrenschmidt wrote:
>
> > This is actually 405. Does that have the same issue?
>
> hrm... I don't remember :-) There -is- something fishy about the icache
> on 405 but I don't remember for sure. Try sticking an iccci in there and
> tell us if that helps.
I did. I stuck an iccci -and- a dccci loop in. I threw in the tlbia
when I ran out of other ideas. And the tlbia + existing
flush_icache_range appears to be sufficient (tested on a non-trivial
app).
According to my docs, the 405fx's icache is virtually
indexed/physically mapped, while the dcache is phys/phys.
--
Mathematics is the supreme nostalgia of our time.
next prev parent reply other threads:[~2007-10-26 14:41 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-24 19:46 Apparent kernel bug with GDB on ppc405 Matt Mackall
2007-10-24 20:28 ` Grant Likely
2007-10-24 20:42 ` Matt Mackall
2007-10-24 20:46 ` Grant Likely
2007-10-24 21:54 ` Matt Mackall
2007-10-24 22:27 ` Grant Likely
2007-10-24 22:32 ` Matt Mackall
2007-10-24 22:39 ` Grant Likely
2007-10-24 22:40 ` Grant Likely
2007-10-26 1:50 ` Benjamin Herrenschmidt
2007-10-24 22:41 ` Daniel Jacobowitz
2007-10-26 1:51 ` Benjamin Herrenschmidt
2007-10-26 20:41 ` Josh Boyer
2007-10-27 1:36 ` Benjamin Herrenschmidt
2007-10-27 1:27 ` Josh Boyer
2007-10-24 20:34 ` David Daney
2007-10-26 1:52 ` Benjamin Herrenschmidt
2007-10-26 1:46 ` Benjamin Herrenschmidt
2007-10-26 2:45 ` Grant Likely
2007-10-26 3:23 ` Benjamin Herrenschmidt
2007-10-26 14:41 ` Matt Mackall [this message]
2007-10-27 1:30 ` Benjamin Herrenschmidt
2007-10-27 7:32 ` [PATCH/RFC] powerpc: Pass PID argument to _tlbie (WAS: Apparent kernel bug with GDB on ppc405) Benjamin Herrenschmidt
2007-10-29 12:08 ` Josh Boyer
2007-10-29 20:15 ` Josh Boyer
2007-10-29 20:35 ` Benjamin Herrenschmidt
2007-10-29 21:13 ` Matt Mackall
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