From: Zou Nan hai <nanhai.zou@intel.com>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: Andrew Morton <akpm@osdl.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-ia64@vger.kernel.org
Subject: Re: 2.6.17-rc1-mm1
Date: Wed, 05 Apr 2006 02:05:06 +0000 [thread overview]
Message-ID: <1144202706.3197.11.camel@linux-znh> (raw)
In-Reply-To: <20060404233851.GA6411@agluck-lia64.sc.intel.com>
On Wed, 2006-04-05 at 07:38, Luck, Tony wrote:
> On Tue, Apr 04, 2006 at 01:45:04AM -0700, Andrew Morton wrote:
> > - VGA on ia64 is broken - the screen comes up blank. But ia64 otherwise
> > seems to work OK. I didn't have time to investigate.
>
> Broken in base 2.6.17-rc1 too :-( VGA comes up and prints a
> few messages, and then goes wonky and dies. Comparing
> what I _think_ I saw with the dmesg output, it appears to
> die here:
>
The wild VGA comes from the patch which changed ioremap.
Now ioremap would not remap memory to region 6 unless that memory is
marked as EFI_MEMORY_UC by EFI.
Unfortunately on the Tiger Machine, VGA ram base was marked as
EFI_MEMORY_WB instead of EFI_MEMORY_UC...
So you can see the problem disappear if change VGA_MAP_MEM to use
ioremap_nocache.
But I am not quite sure if we can fully trust EFI on this attribute.
Zou Nan hai
WARNING: multiple messages have this Message-ID (diff)
From: Zou Nan hai <nanhai.zou@intel.com>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: Andrew Morton <akpm@osdl.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-ia64@vger.kernel.org
Subject: Re: 2.6.17-rc1-mm1
Date: 05 Apr 2006 10:05:06 +0800 [thread overview]
Message-ID: <1144202706.3197.11.camel@linux-znh> (raw)
In-Reply-To: <20060404233851.GA6411@agluck-lia64.sc.intel.com>
On Wed, 2006-04-05 at 07:38, Luck, Tony wrote:
> On Tue, Apr 04, 2006 at 01:45:04AM -0700, Andrew Morton wrote:
> > - VGA on ia64 is broken - the screen comes up blank. But ia64 otherwise
> > seems to work OK. I didn't have time to investigate.
>
> Broken in base 2.6.17-rc1 too :-( VGA comes up and prints a
> few messages, and then goes wonky and dies. Comparing
> what I _think_ I saw with the dmesg output, it appears to
> die here:
>
The wild VGA comes from the patch which changed ioremap.
Now ioremap would not remap memory to region 6 unless that memory is
marked as EFI_MEMORY_UC by EFI.
Unfortunately on the Tiger Machine, VGA ram base was marked as
EFI_MEMORY_WB instead of EFI_MEMORY_UC...
So you can see the problem disappear if change VGA_MAP_MEM to use
ioremap_nocache.
But I am not quite sure if we can fully trust EFI on this attribute.
Zou Nan hai
next prev parent reply other threads:[~2006-04-05 2:05 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-04 8:45 2.6.17-rc1-mm1 Andrew Morton
2006-04-04 14:31 ` 2.6.17-rc1-mm1 Kumar Gala
2006-04-04 16:02 ` 2.6.17-mm1: drivers/w1/: patch undoes reasonable cleanups Adrian Bunk
2006-04-04 16:35 ` Evgeniy Polyakov
2006-04-04 16:29 ` 2.6.17-rc1-mm1: KEXEC became SMP-only Adrian Bunk
2006-04-04 17:22 ` Zachary Amsden
2006-04-04 17:50 ` Eric W. Biederman
2006-04-06 22:37 ` Adrian Bunk
2006-04-04 17:43 ` Eric W. Biederman
2006-04-04 17:51 ` Zachary Amsden
2006-04-04 18:43 ` Eric W. Biederman
2006-04-04 19:23 ` Zachary Amsden
2006-04-04 19:38 ` Muli Ben-Yehuda
2006-04-04 20:25 ` Andrew Morton
2006-04-04 22:02 ` Zachary Amsden
2006-04-04 22:19 ` Andrew Morton
2006-04-04 22:34 ` Zachary Amsden
2006-04-04 22:38 ` Andrew Morton
2006-04-05 0:21 ` Martin Bligh
2006-04-05 2:45 ` Eric W. Biederman
2006-04-04 16:29 ` [-mm patch] i386: pre_intr_init_hook optimization Adrian Bunk
2006-04-04 17:16 ` Zachary Amsden
2006-04-04 16:29 ` 2.6.17-rc1-mm1: why did acpi_ns_build_external_path() become global? Adrian Bunk
2006-04-04 16:30 ` [-mm patch] drivers/media/video/bt866.c: small fixes Adrian Bunk
2006-04-04 18:32 ` Martin Samuelsson
2006-04-05 7:42 ` Andrew Morton
2006-04-05 9:02 ` Adrian Bunk
2006-04-05 13:44 ` Martin Samuelsson
2006-04-05 8:32 ` Johannes Stezenbach
2006-04-05 13:54 ` Martin Samuelsson
2006-04-04 16:30 ` [-mm patch] fs/nfsd/nfs4state.c: make a struct static Adrian Bunk
2006-04-04 16:30 ` Adrian Bunk
2006-04-04 16:50 ` [NFS] " J. Bruce Fields
2006-04-04 17:29 ` Adrian Bunk
2006-04-04 20:53 ` 2.6.17-rc1-mm1: mlockall() regression on x86_64 Rafael J. Wysocki
2006-04-04 22:24 ` Andrew Morton
2006-04-04 21:53 ` 2.6.17-rc1-mm1 Zan Lynx
2006-04-04 22:09 ` 2.6.17-rc1-mm1 Andrew Morton
2006-04-05 7:01 ` 2.6.17-rc1-mm1 Roger Luethi
2006-04-05 7:29 ` 2.6.17-rc1-mm1 Andrew Morton
2006-04-05 22:01 ` 2.6.17-rc1-mm1 Roger Luethi
2006-04-04 23:38 ` 2.6.17-rc1-mm1 Luck, Tony
2006-04-04 23:38 ` 2.6.17-rc1-mm1 Luck, Tony
2006-04-05 2:05 ` Zou Nan hai [this message]
2006-04-05 2:05 ` 2.6.17-rc1-mm1 Zou Nan hai
2006-04-05 16:15 ` 2.6.17-rc1-mm1 Bjorn Helgaas
2006-04-05 16:15 ` 2.6.17-rc1-mm1 Bjorn Helgaas
2006-04-05 21:17 ` 2.6.17-rc1-mm1 Luck, Tony
2006-04-05 21:17 ` 2.6.17-rc1-mm1 Luck, Tony
2006-04-05 21:37 ` 2.6.17-rc1-mm1 Andrew Morton
2006-04-05 21:37 ` 2.6.17-rc1-mm1 Andrew Morton
2006-04-05 21:39 ` 2.6.17-rc1-mm1 Andreas Schwab
2006-04-05 21:39 ` 2.6.17-rc1-mm1 Andreas Schwab
2006-04-05 22:01 ` 2.6.17-rc1-mm1 Bjorn Helgaas
2006-04-05 22:01 ` 2.6.17-rc1-mm1 Bjorn Helgaas
2006-04-06 1:49 ` 2.6.17-rc1-mm1 Antonino A. Daplas
2006-04-06 1:49 ` 2.6.17-rc1-mm1 Antonino A. Daplas
2006-04-06 10:21 ` 2.6.17-rc1-mm1 Russell King
2006-04-06 10:21 ` 2.6.17-rc1-mm1 Russell King
2006-04-06 10:34 ` 2.6.17-rc1-mm1 Russell King
2006-04-06 10:34 ` 2.6.17-rc1-mm1 Russell King
2006-04-06 14:55 ` 2.6.17-rc1-mm1 Bjorn Helgaas
2006-04-06 14:55 ` 2.6.17-rc1-mm1 Bjorn Helgaas
2006-04-06 10:16 ` 2.6.17-rc1-mm1 Russell King
2006-04-06 10:16 ` 2.6.17-rc1-mm1 Russell King
2006-04-05 22:50 ` 2.6.17-rc1-mm1 Luck, Tony
2006-04-05 22:50 ` 2.6.17-rc1-mm1 Luck, Tony
2006-04-05 2:27 ` 2.6.17-rc1-mm1, nfsd/reiser4 BUG Zan Lynx
2006-04-07 12:27 ` 2.6.17-rc1-mm1: drivers/acpi/numa.c compile error Adrian Bunk
2006-04-07 20:59 ` Andrew Morton
2006-04-09 15:44 ` Adrian Bunk
2006-04-09 15:57 ` Randy.Dunlap
2006-04-07 20:58 ` 2.6.17-rc1-mm1 - detects buggy TSC on GEODE Jim Cromie
2006-04-08 0:07 ` Andrew Morton
2006-04-08 0:25 ` john stultz
2006-04-08 1:15 ` Jim Cromie
2006-04-13 7:39 ` 2.6.17-rc1-mm1 Heiko Carstens
2006-04-13 8:13 ` 2.6.17-rc1-mm1 Andrew Morton
2006-04-14 16:07 ` 2.6.17-rc1-mm1 Alasdair G Kergon
-- strict thread matches above, loose matches on Subject: below --
2006-04-04 8:45 2.6.17-rc1-mm1 Andrew Morton
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