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From: Joakim Tjernlund <joakim.tjernlund@transmode.se>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Scott Wood <scottwood@freescale.com>,
	"linuxppc-dev@ozlabs.org" <linuxppc-dev@ozlabs.org>,
	Rex Feany <RFeany@mrv.com>
Subject: Re: [PATCH 4/8] 8xx: Fixup DAR from buggy dcbX instructions.
Date: Wed, 14 Oct 2009 23:41:30 +0200	[thread overview]
Message-ID: <OFDAF14BF7.E3D4EBC9-ONC125764F.0076DF84-C125764F.00772817@transmode.se> (raw)
In-Reply-To: <1255555029.2347.55.camel@pasglop>

Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote on 14/10/2009 23:17:09:
>
> On Wed, 2009-10-14 at 16:14 -0500, Scott Wood wrote:
> >
> > I think the last working version was a little older than that -- and it's quite
> > possible that there was underlying badness even earlier that just recently got
> > exposed.  I think I want to just debug it and find out what's really going on.
>
> That would be good :-)
>
> I've been itching to do that but without HW it's not trivial :-)

Meanwhile, how about the tlb asm you promised me? :)
It will be a challenge I think since you only have 2 GPRs
I guess it would be possible to stash yet another reg since it
will fit in the cache line already used by the TLB handlers.

 Jocke

  reply	other threads:[~2009-10-14 21:45 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-11 16:35 [PATCH 0/8] Fix 8xx MMU/TLB Joakim Tjernlund
2009-10-11 16:35 ` [PATCH 1/8] 8xx: invalidate non present TLBs Joakim Tjernlund
2009-10-11 16:35   ` [PATCH 2/8] 8xx: Update TLB asm so it behaves as linux mm expects Joakim Tjernlund
2009-10-11 16:35     ` [PATCH 3/8] 8xx: Tag DAR with 0x00f0 to catch buggy instructions Joakim Tjernlund
2009-10-11 16:35       ` [PATCH 4/8] 8xx: Fixup DAR from buggy dcbX instructions Joakim Tjernlund
2009-10-11 16:35         ` [PATCH 5/8] 8xx: dcbst sets store bit in DTLB error, workaround Joakim Tjernlund
2009-10-11 16:35           ` [PATCH 6/8] 8xx: Add missing Guarded setting in DTLB Error Joakim Tjernlund
2009-10-11 16:35             ` [PATCH 7/8] 8xx: Restore _PAGE_WRITETHRU Joakim Tjernlund
2009-10-11 16:35               ` [PATCH 8/8] 8xx: start using dcbX instructions in various copy routines Joakim Tjernlund
2009-10-11 21:26               ` [PATCH 7/8] 8xx: Restore _PAGE_WRITETHRU Benjamin Herrenschmidt
2009-10-11 22:21                 ` Joakim Tjernlund
2009-10-11 22:45                   ` Benjamin Herrenschmidt
2009-10-11 21:25             ` [PATCH 6/8] 8xx: Add missing Guarded setting in DTLB Error Benjamin Herrenschmidt
2009-10-11 22:19               ` Joakim Tjernlund
2009-10-11 22:44                 ` Benjamin Herrenschmidt
2009-10-12  5:36                   ` Joakim Tjernlund
2009-10-12  5:46                     ` Benjamin Herrenschmidt
2009-10-12  6:59                       ` Joakim Tjernlund
2009-10-14 17:02           ` [PATCH 5/8] 8xx: dcbst sets store bit in DTLB error, workaround Scott Wood
2009-10-14 17:20         ` [PATCH 4/8] 8xx: Fixup DAR from buggy dcbX instructions Scott Wood
2009-10-14 19:05           ` Joakim Tjernlund
2009-10-14 19:23             ` Scott Wood
2009-10-14 20:03               ` Joakim Tjernlund
2009-10-14 20:22                 ` Scott Wood
2009-10-14 21:10                   ` Joakim Tjernlund
2009-10-14 21:14                     ` Scott Wood
2009-10-14 21:17                       ` Benjamin Herrenschmidt
2009-10-14 21:41                         ` Joakim Tjernlund [this message]
2009-10-14 21:52                           ` Benjamin Herrenschmidt
2009-10-14 22:09                             ` Joakim Tjernlund
2009-10-11 21:25     ` [PATCH 2/8] 8xx: Update TLB asm so it behaves as linux mm expects Benjamin Herrenschmidt
2009-10-14 16:57     ` Scott Wood
2009-10-14 16:56   ` [PATCH 1/8] 8xx: invalidate non present TLBs Scott Wood
2009-10-14 17:23 ` [PATCH 0/8] Fix 8xx MMU/TLB Scott Wood
2009-10-14 18:46   ` Joakim Tjernlund
2009-10-15  9:04 Joakim Tjernlund
2009-10-15  9:04 ` [PATCH 1/8] 8xx: invalidate non present TLBs Joakim Tjernlund
2009-10-15  9:04   ` [PATCH 2/8] 8xx: Update TLB asm so it behaves as linux mm expects Joakim Tjernlund
2009-10-15  9:04     ` [PATCH 3/8] 8xx: Tag DAR with 0x00f0 to catch buggy instructions Joakim Tjernlund
2009-10-15  9:04       ` [PATCH 4/8] 8xx: Fixup DAR from buggy dcbX instructions Joakim Tjernlund
2009-11-04 13:38 [PATCH 0/8] 8xx: Misc fixes for buggy insn Joakim Tjernlund
2009-11-04 13:38 ` [PATCH 1/8] 8xx: invalidate non present TLBs Joakim Tjernlund
2009-11-04 13:38   ` [PATCH 2/8] 8xx: Update TLB asm so it behaves as linux mm expects Joakim Tjernlund
2009-11-04 13:38     ` [PATCH 3/8] 8xx: Tag DAR with 0x00f0 to catch buggy instructions Joakim Tjernlund
2009-11-04 13:38       ` [PATCH 4/8] 8xx: Fixup DAR from buggy dcbX instructions Joakim Tjernlund

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