From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Kevin Hao <haokexin@gmail.com>
Cc: Scott Wood <scottwood@freescale.com>,
linuxppc <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH 1/3] powerpc/mpc85xx: remove the unneeded pci init functions for corenet ds board
Date: Sat, 01 Jun 2013 21:47:16 +1000 [thread overview]
Message-ID: <1370087236.3766.43.camel@pasglop> (raw)
In-Reply-To: <20130601105936.GA1850@pek-khao-d1.corp.ad.wrs.com>
On Sat, 2013-06-01 at 18:59 +0800, Kevin Hao wrote:
> The effect of this change is that the isa_io_base will be 0 and the IO
> resource are equal to the virtual address of the IO space. But the IO
> functions such as outx/inx should work as well. This is why I ask the
> above question. What do you think about this? Are there any subtle bugs
> that will be triggered by this?
I don't see any obvious reason why that wouldn't work but like anything
in that area, it needs a bit of testing & hammering to be sure ;-)
In fact it would work on pmac32 as well since those generally don't have
legacy crap either.
So I have no fundamental objection, it just needs testing. My worry is
that we need to make sure we don't break old chrp and I don't have any
to test with. I'm happy to drop support for stuff nobody uses anymore
(we did drop PReP after all and I'm *that* close to drop power3) but as
long as somebody is still using a CHRP RS6K or a Pegasos I can't quite
drop those... And they do have legacy ISA crap to deal with.
Cheers,
Ben.
next prev parent reply other threads:[~2013-06-01 11:47 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-21 12:04 [PATCH 0/3] several cleanup patches for fsl pci Kevin Hao
2013-05-21 12:04 ` [PATCH 1/3] powerpc/mpc85xx: remove the unneeded pci init functions for corenet ds board Kevin Hao
2013-05-28 22:52 ` Scott Wood
2013-05-30 10:20 ` Kevin Hao
2013-05-30 18:54 ` Scott Wood
2013-05-31 6:41 ` Kevin Hao
2013-05-31 10:11 ` Benjamin Herrenschmidt
2013-06-01 10:59 ` Kevin Hao
2013-06-01 11:47 ` Benjamin Herrenschmidt [this message]
2013-06-02 0:07 ` Kevin Hao
2013-06-03 16:42 ` Scott Wood
2013-06-07 2:00 ` Kevin Hao
2013-06-08 0:00 ` Scott Wood
2013-07-23 22:31 ` Scott Wood
2013-07-25 12:54 ` Kevin Hao
2013-07-26 22:43 ` Scott Wood
2013-07-28 0:32 ` Kevin Hao
2013-05-31 6:43 ` Kevin Hao
2013-05-31 23:27 ` Scott Wood
2013-06-01 11:13 ` Kevin Hao
2013-05-21 12:04 ` [PATCH 2/3] powerpc/fsl-pci: fix the unreachable warning message Kevin Hao
2013-05-21 12:05 ` [PATCH 3/3] powerpc/fsl-pci: enable SWIOTLB in function setup_pci_atmu Kevin Hao
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