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Shared memory areas were not cleared when they are allocated and
handed to user space. Sensitive information may leak.
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Avoid calling reclaim_buffers_locked if we don't have a
hardware lock.
Improve reclaim_buffers_locked deadlock error formatting.
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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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This reverts cc22cd8bde39f3e4be8ca9f726a773b0270ebdbc commit.
I put this patch incorrectly in .. will fix now
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ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.
Tested (compilation only) to make sure the files are compiling without
any warning/error due to new changes
Signed-off-by: Amol Lad <amol@verismonetworks.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
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I need the following patch to fix compilation of
latest drm/linux-core on my ppc64 machine.
/home/mb/develop/git/drm/linux-core/savage_bci.c: In function ‘savage_driver_firstopen’:
/home/mb/develop/git/drm/linux-core/savage_bci.c:587: error: ‘DRM_MTRR_WC’ undeclared (first use in this function)
/home/mb/develop/git/drm/linux-core/savage_bci.c:587: error: (Each undeclared identifier is reported only once
/home/mb/develop/git/drm/linux-core/savage_bci.c:587: error: for each function it appears in.)
/home/mb/develop/git/drm/linux-core/savage_bci.c: In function ‘savage_driver_lastclose’:
/home/mb/develop/git/drm/linux-core/savage_bci.c:664: error: ‘DRM_MTRR_WC’ undeclared (first use in this function)
I looked at in-kernel drmP.h and it actually
has the same fix in it.
Signed-off-by: Michael Buesch <mb@bu3sch.de>
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since the support for memory caches has gone from 2.6.20.
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The current version didn't build on BSD, where the new functionality isn't used
yet anyway. Whoever changes that will hopefully be able to make the OSes share
this file as well.
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Conflicts:
linux-core/Makefile.kernel
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Build fixes for powerpc.
Reported by Katerina Barone-Adesi
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This will come in very handy for tiled buffers on intel hardware.
Also add some padding to interface structures to allow future binary backwards
compatible changes.
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This makes an allocated block actually align itself and returns any
wasted space to the manager.
Also add some functions to grow and shrink the managed area.
This will be used in the future to manage the buffer object swap cache.
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otherwise data will be missing, which becomes apparent when the kernel evicts
batch buffers which are likely to be written into in the evicted state,
and then rebound to the AGP aperture.
This means we cannot rely on the AGP module to flush the
cache for us.
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Fix some refcounting errors.
Fix some error messages.
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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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driver we're on.
Avoid global cache flushes before inserting pages.
In general, they are never mapped, and not accessed through the kernel map, so
a cache flush should not be necessary. The exception is pages that are bound
cached. We might need a cache flush for those.
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that is now handled by the memory accounting.
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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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The mm_lock function is used when leaving vt. It evicts _all_ buffers.
Buffers with the DRM_BO_NO_MOVE attribute set will be guaranteed to
get the same offset when / if they are rebound.
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makes the client code a lot cleaner. Prepare buffer manager for lock and
unlock calls.
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Fix up init and destruction code.
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nouveau-1
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