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The kernel has removed nopage so move the old nopage codepaths into a compat vm file and switch to using the fault paths.
nopfn is on its way out in the future also, so we should switch to using fault
for that path as well soon
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Move unfenced checking into idle checking.
Never time out while waiting for software events like unmapped or unfenced.
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This patch fixes bits of the DRM so to make the radeon DRI work on
non-cache coherent PCI DMA variants of the PowerPC processors.
It moves the few places that needs change to wrappers to that
other architectures with similar issues can easily add their
own changes to those wrappers, at least until we have more useful
generic kernel API.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Rip out the whole head thing and replace it with an idr and drm_minor
structure.
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As DRM_DEBUG macro already prints out the __FUNCTION__ string (see
drivers/char/drm/drmP.h), it is not worth doing this again. At some
other places the ending "\n" was added.
airlied:- I cleaned up a few that this patch missed also
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Flags pending validation were stored in a misleadingly named field, 'mask'.
As 'mask' is already used to indicate pieces of a flags field which are
changing, it seems better to use a name reflecting the actual purpose of
this field. I chose 'proposed_flags' as they may not actually end up in
'flags', and in an case will be modified when they are moved over.
This affects the API, but not ABI of the user-mode interface.
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Add interface entry cleaning a memory type without touching NO_EVICT buffers.
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As a fallout, replace filp storage with file_priv storage for "unique
identifier of a client" all over the DRM. There is a 1:1 mapping, so this
should be a noop. This could be a minor performance improvement, as everything
on Linux dereferenced filp to get file_priv anyway, while only the mmap ioctls
went the other direction.
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Buffer object dereference cleanup.
Add a struct drm_device member to fence objects:
This can simplify code, particularly in drivers.
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This makes the drms use of the list handling macros a lot cleaner
and more along the lines of how they should be used.
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(Should really make this write-combined using PATs, at some point).
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The vm subsystem of 2.6.21 is fully compatible with the buffer object
vm code.
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Implement unmappable buffers. (fault moves them to mappable when needed).
Various bugfixes.
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Some other minor fixes.
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Implement a memcpy fallback for copying between buffers.
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Add a file for memory move helpers, drm_bo_move.c
Implement generic memory move.
Cached, no_move and unmapped memory temporarily broken.
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and clean up some function names.
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Remove ttm objects.
Make vm aware of PCI memory type buffer objects.
(Only works for pre 2.6.16 kernels for now).
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Honour the ttm backend cant-use-aperture flag.
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The map lists and hash tables are protected using dev->struct_mutex,
but drm_mmap strangely never locked this mutex.
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This comes from the Re: [patch] paravirt: isolate module ops on lkml
It needs some testing, please report any regressions caused.
Signed-off-by: Dave Airlie <airlied@linux.ie>
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TTM pages were not cleared when allocated and handed to user space.
Sensitive information may leak.
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Bye bye 2.4 you served us well..
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Make sure the callers do a pgprot_noncached() on
vma->vm_page_prot.
Pointed out by Hugh Dickens.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Some drivers are returning OOM when it is not in response to a memory
shortage.
Signed-off-by: Nick Piggin <npiggin@suse.de>
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Build fixes for powerpc.
Reported by Katerina Barone-Adesi
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Conflicts:
linux-core/drmP.h
linux-core/drm_drv.c
linux-core/drm_irq.c
linux-core/drm_stub.c
shared-core/drm.h
shared-core/i915_drv.h
shared-core/i915_irq.c
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Use byte unit for /proc printout of memory usage for small sizes to be
able to detect memory allocation bugs more easily.
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it will go away in the mainstream kernel.
Some bugfixes, mainly in error paths.
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Adapt for new functions in the 2.6.19 kernel.
Remove the ability to have multiple regions in one TTM.
This simplifies a lot of code.
Remove the ability to access TTMs from user space.
We don't need it anymore without ttm regions.
Don't change caching policy for evicted buffers. Instead change it only
when the buffer is accessed by the CPU (on the first page fault).
This tremendously speeds up eviction rates.
Current code is safe for kernels <= 2.6.14.
Should also be OK with 2.6.19 and above.
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