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From: Willy Tarreau <w@1wt.eu>
To: Joakim Tjernlund <joakim.tjernlund@transmode.se>
Cc: Scott Wood <scottwood@freescale.com>,
	linuxppc-dev <linuxppc-dev@ozlabs.org>,
	Dan Malek <ppc6dev@digitaldans.com>
Subject: Re: [PATCH 00/14] Backport 8xx TLB to 2.4
Date: Wed, 8 Feb 2012 10:44:26 +0100	[thread overview]
Message-ID: <20120208094426.GC1379@1wt.eu> (raw)
In-Reply-To: <OF173F1835.8171C985-ONC125799E.002FE8C7-C125799E.0030008A@transmode.se>

Hi Joakim,

On Wed, Feb 08, 2012 at 09:44:18AM +0100, Joakim Tjernlund wrote:
> Willy Tarreau <w@1wt.eu> wrote on 2011/12/11 18:33:46:
> >
> > Hi Joakim,
> >
> > On Sun, Dec 11, 2011 at 06:19:54PM +0100, Joakim Tjernlund wrote:
> > > > To: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
> > > > From: Willy Tarreau <w@1wt.eu>
> > > >
> > > > Hi Joakim,  On Mon, Oct 10, 2011 at 01:30:06PM +0200, Joakim Tjernlund wrote: > This is a
> > > > backport from 2.6 which I did to overcome 8xx CPU > bugs. 8xx does not update the DAR register
> > > > when taking a TLB > error caused by dcbX and icbi insns which makes it very > tricky to use these
> > > > insns. Also the dcbst wrongly sets the > the store bit when faulting into DTLB error. > A few
> > > > more bugs very found during development. >  > I know 2.4 is in strict maintenance mode and 8xx is
> > > > obsolete > but as it is still in use I wanted 8xx to age with grace.  Thank you. I must admit I
> > > > was hoping those patches would come in for a last release before the end of the year :-)  Unless
> > > > there is any objection from anyone, I'll merge them when kernel.org is back online.  Cheers,
> > > > Willy
> > >
> > > Did this go anywhere?
> >
> > Not yet, I just need to find some time to release another 2.4 with these
> > patches.
> 
> Ping? There should be a tree somewhere by now :)

I'm planning on doing 2.4.37.12 once I'm finished with 2.6.27.60. However I'll
have to find another place to host it, as the 2.4 tree was never completely
recovered from master.kernel.org after the break-in, and admins there have
many more important things to do than to spend their time restoring the 2.4
files. Probably that I'll put that into my account.

BTW, since you're asking, you seem to still be using 2.4. Do you think it's
worth pursuing maintenance over 2.4.37.12 and if so for how long ? I'm asking
because until the break-in, I felt like almost nobody was using it anymore,
but since the break-in, I received a number of mails asking where to download
it. So now I assume that there are still users, but they're too much silent.

Regards,
Willy

  reply	other threads:[~2012-02-08  9:58 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-10 11:30 [PATCH 00/14] Backport 8xx TLB to 2.4 Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 01/14] 8xx: Use a macro to simpliy CPU6 errata code Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 02/14] 8xx: Tag DAR with 0x00f0 to catch buggy instructions Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 03/14] 8xx: invalidate non present TLBs Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 04/14] 8xx: Fix CONFIG_PIN_TLB Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 05/14] 8xx: Update TLB asm so it behaves as linux mm expects Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 06/14] 8xx: Fixup DAR from buggy dcbX instructions Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 07/14] 8xx: CPU6 errata make DTLB error too big to fit Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 08/14] 8xx: Add missing Guarded setting in DTLB Error Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 09/14] 8xx: Restore _PAGE_WRITETHRU Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 10/14] 8xx: Set correct HW pte flags in DTLB Error too Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 11/14] 8xx: start using dcbX instructions in various copy routines Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 12/14] 8xx: Use symbolic constants in TLB asm Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 13/14] 8xx: Optimize TLB Miss handlers Joakim Tjernlund
2011-10-10 11:30 ` [PATCH 14/14] 8xx: The TLB miss handler manages ACCESSED correctly Joakim Tjernlund
2011-10-10 12:30 ` [PATCH 00/14] Backport 8xx TLB to 2.4 Willy Tarreau
2011-12-11 17:19 ` Joakim Tjernlund
2011-12-11 17:33   ` Willy Tarreau
2012-02-08  8:44     ` Joakim Tjernlund
2012-02-08  9:44       ` Willy Tarreau [this message]
2012-02-08 11:39         ` Joakim Tjernlund
2012-02-08 12:26           ` Willy Tarreau
2012-04-09 13:08           ` Willy Tarreau

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