Revised patch, unmap_mapping_range() on unbind and clear register.
From 8f13b6389ee0c8a39a2073279928a3a228bd27dc Mon Sep 17 00:00:00 2001
From: Chris Wilson ch...@chris-wilson.co.uk
Date: Mon, 29 Jun 2009 08:45:31 +0100
Subject: [PATCH] drm/i915: Remove mappings on clearing fence register
As the
On Mon, 2009-06-22 at 18:18 -0700, Jesse Barnes wrote:
On Tue, 23 Jun 2009 11:04:39 +1000
Benjamin Herrenschmidt b...@kernel.crashing.org wrote:
On Mon, 2009-06-22 at 17:24 -0700, Linus Torvalds wrote:
On Tue, 23 Jun 2009, Benjamin Herrenschmidt wrote:
As far as I can
On Tue, 23 Jun 2009 09:48:00 +0200
Michel Dänzer mic...@daenzer.net wrote:
In fact, nowdays, we do have the infrastructure to be smart and
enforce that. IE. Instead of using a boring remap_page_ranges() in
fb_mmap() we could use a fault handler. When in KD_TEXT, we fail
them, when in
On Tue, 23 Jun 2009 12:26:15 +1000
Benjamin Herrenschmidt b...@kernel.crashing.org wrote:
On Mon, 2009-06-22 at 19:07 -0700, Jesse Barnes wrote:
Yeah I don't think we should try to change the mode, unless we
really have to for whatever reason. fbcon should generally be able
to paint to
On Tue, 23 Jun 2009 08:39:44 -0700
Jesse Barnes jbar...@virtuousgeek.org wrote:
On Tue, 23 Jun 2009 09:48:00 +0200
Michel Dänzer mic...@daenzer.net wrote:
On a side note, I did precisely that about ten years ago on my
Amiga. :) Granted, that was using two separate framebuffer devices
(X
On Sun, Jun 21, 2009 at 3:47 PM, Linus
Torvaldstorva...@linux-foundation.org wrote:
What *has* changed is that we have a newradeon driver, and it looks like
that new radeon driver is crap, and does this:
info-fix.smem_start = (unsigned long)fbptr;
which is totally screwed up. It
On Sun, Jun 21, 2009 at 1:16 AM, Dave Airlieairl...@linux.ie wrote:
I tried this tree (specifically, a merge of Linus' fb20871 this tree) on
Fedora 11 with modesetting enabled on an integrated Radeon 2100, and
plymouthd
crashes immediately with a corrupt page table. Photo attached. After
On Sun, Jun 21, 2009 at 5:14 PM, Andrew Lutomirskil...@mit.edu wrote:
On Sun, Jun 21, 2009 at 3:47 PM, Linus
Torvaldstorva...@linux-foundation.org wrote:
What *has* changed is that we have a newradeon driver, and it looks like
that new radeon driver is crap, and does this:
There is a ttm_fbdev_mmap() function in TTM that may help in this situation.
As with the standard ttm mmap it's using fault() which means it's possible to
move out the backing buffer object if you first reserve it and then call
unmap_mapping_range() on the relevant fbdev address space to
On Sun, 2009-06-21 at 22:24 +0100, Chris Wilson wrote:
On Sun, 2009-06-21 at 17:47 +0300, Maxim Levitsky wrote:
52dc7d32b88156248167864f77a9026abe27b432 is first bad commit
commit 52dc7d32b88156248167864f77a9026abe27b432
Author: Chris Wilson ch...@chris-wilson.co.uk
Date: Sat Jun 6
On Mon, 22 Jun 2009, Thomas Hellström wrote:
It would be very helpful if we could introduce an fbdev mutex that protects
fbdev accesses to the kernel map and to the fbdev acceleration functions.
Not going to happen.
Why? 'printk'.
If you can't handle printk, then you're basically useless.
On Mon, 22 Jun 2009, Andrew Lutomirski wrote:
What if we only guaranteed that the framebuffer is mapped when it's
showing on the screen?
I think that works ok. We only care about printk being immediate in that
case, and if it gets buffered I don't think we care.
printk doesn't need to
On Tue, 23 Jun 2009, Benjamin Herrenschmidt wrote:
As far as I can remember, all fbdev operations are done under the
console semaphore.
Yeah, and some of them are horribly broken (ie copying data from user
space while doing it - causing horrible things like VC switching latencies
and
On Mon, 2009-06-22 at 17:24 -0700, Linus Torvalds wrote:
On Tue, 23 Jun 2009, Benjamin Herrenschmidt wrote:
As far as I can remember, all fbdev operations are done under the
console semaphore.
Yeah, and some of them are horribly broken (ie copying data from user
space while doing it
On Mon, 2009-06-22 at 11:22 -0700, Linus Torvalds wrote:
Not going to happen.
Why? 'printk'.
If you can't handle printk, then you're basically useless. And printk
absolutely -has- to work in bad situations (the most important
messages could happen in any context).
Well... yes and no. If
On Mon, 2009-06-22 at 18:18 -0700, Jesse Barnes wrote:
I think it could work, but ideally we'd keep the kernel fbcon object
pinned, and keep printing into it even while some other gfx app is
running. That way we don't have to dump the whole queue into it when
a
panic occurs, we can just
On Mon, 2009-06-22 at 19:07 -0700, Jesse Barnes wrote:
Yeah I don't think we should try to change the mode, unless we really
have to for whatever reason. fbcon should generally be able to paint
to whatever we have up as long as we set it up properly.
Well... it may not. IE. The text consoles
On Tue, 23 Jun 2009 11:58:44 +1000
Benjamin Herrenschmidt b...@kernel.crashing.org wrote:
On Mon, 2009-06-22 at 18:18 -0700, Jesse Barnes wrote:
I think it could work, but ideally we'd keep the kernel fbcon object
pinned, and keep printing into it even while some other gfx app is
running.
On Tue, 23 Jun 2009 11:04:39 +1000
Benjamin Herrenschmidt b...@kernel.crashing.org wrote:
On Mon, 2009-06-22 at 17:24 -0700, Linus Torvalds wrote:
On Tue, 23 Jun 2009, Benjamin Herrenschmidt wrote:
As far as I can remember, all fbdev operations are done under the
console
Em Sun, Jun 21, 2009 at 08:05:36PM -0400, Andrew Lutomirski escreveu:
David -- there are still plenty of bugs. The kernel gets my monitor's
resolution wrong (X reads it off DDC correctly but I have to use
xrandr to force the resolution).
No crashes here, but I was able to use an external
On Sat, 2009-06-20 at 17:42 -0700, Linus Torvalds wrote:
On Sun, 21 Jun 2009, Maxim Levitsky wrote:
Something from this tree breaks my i965.
Using -git just before this was pulled,
a552f0af753eb4b5bbbe9eff205fe874b04c4583 works, but using latest git
makes google earth stall,
On Sun, 21 Jun 2009, Dave Airlie wrote:
I tried this tree (specifically, a merge of Linus' fb20871 this tree) on
Fedora 11 with modesetting enabled on an integrated Radeon 2100, and
plymouthd
crashes immediately with a corrupt page table. Photo attached. After the
crash, bootup
On Sun, 21 Jun 2009, Linus Torvalds wrote:
Dave - no amount of userspace differences make a corrupted page table
acceptable.
This needs to be fixed. No excuses. Kernel crashes are never an issue of
you used the wrong user space.
So corrupted page table means that one of the reserved
On Sun, 21 Jun 2009, Andrew Lutomirski wrote:
Anyway, here's a totally UNTESTED patch that hopefully gives a warning on
where exactly we set the invalid bits. Andy, mind trying it out? You
should get the warnign much earlier, and it should have a much more useful
back-trace.
Your
On Sun, 2009-06-21 at 17:47 +0300, Maxim Levitsky wrote:
52dc7d32b88156248167864f77a9026abe27b432 is first bad commit
commit 52dc7d32b88156248167864f77a9026abe27b432
Author: Chris Wilson ch...@chris-wilson.co.uk
Date: Sat Jun 6 09:46:01 2009 +0100
The error here seems to be my
On Sun, 21 Jun 2009, Andrew Lutomirski wrote:
Anyway, here's a totally UNTESTED patch that hopefully gives a warning on
where exactly we set the invalid bits. Andy, mind trying it out? You
should get the warnign much earlier, and it should have a much more useful
back-trace.
On Sun, 21 Jun 2009, Dave Airlie wrote:
I tried this tree (specifically, a merge of Linus' fb20871 this tree) on
Fedora 11 with modesetting enabled on an integrated Radeon 2100, and
plymouthd
crashes immediately with a corrupt page table. Photo attached. After the
crash,
On Sat, 2009-06-20 at 06:23 +0100, Dave Airlie wrote:
Hi Linus,
Please pull the 'drm-linus' branch from
ssh://master.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6.git drm-linus
This is the same tree from the previous pull request + the fix from Pierre
that actually makes the
On Sun, 21 Jun 2009, Maxim Levitsky wrote:
Something from this tree breaks my i965.
Using -git just before this was pulled,
a552f0af753eb4b5bbbe9eff205fe874b04c4583 works, but using latest git
makes google earth stall, it doesn't update its main window. It appears
that openining and
Please pull the 'drm-linus' branch from
ssh://master.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6.git
drm-linus
This is the same tree from the previous pull request + the fix from Pierre
that actually makes the PAE/GEM combination on i965 work. \o/
Something from this
I tried this tree (specifically, a merge of Linus' fb20871 this tree) on
Fedora 11 with modesetting enabled on an integrated Radeon 2100, and plymouthd
crashes immediately with a corrupt page table. Photo attached. After the
crash, bootup stops, although ctrl-alt-del works.
You need a
Hi Linus,
Please pull the 'drm-linus' branch from
ssh://master.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6.git drm-linus
This is the same tree from the previous pull request + the fix from Pierre
that actually makes the PAE/GEM combination on i965 work. \o/
Dave.
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