Both drmIoctl and ioctl define second argument as unigned long.
Debugging/tracing tools (like strace or valgrind) on 64-bit machines see
different request value for ioctls with 32nd bit set, because casting
signed int to unsigned long extends 32nd bit to upper word, so 0x80000000
becomes 0xFFFFFFFF80000000)
Nobody noticed because higher 32 bits are chopped off on their way to kernel.
Hi Alex,
Enclosed is a revised version of the patch sent on Mar 18, against
the master branch of the drm userspace (i.e. libdrm). Details
summarised in this thread:
http://lists.freedesktop.org/archives/dri-devel/2011-March/009499.html
This patch reconciles libdrm with the the kernel change that Dave
pushed this morning. It *supersedes* the previously sent patch (i.e.
apply it to the master branch as it exists at the time of this writing,
not as an incremental patch to the one sent previously).
Regards,
Ilija
Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
This is Fail.
First patch to libdrm, and I've borked it up.
Noticed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
... and if asked to open a bo by the same global name, return a fresh
reference to the previously allocated buffer.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
The nvc0 gallium drivers passes NULL here to indicate to the memory manager
that a buffer is being used, but without creating an actual reloc.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
gen4+ hardware doesn't use fences for GPU access and the older kernel
doesn't expect userspace to make such a mistake. So don't.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32190
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
For relaxed fencing the object may only consume the small set of active
pages, but still requires a fence region once bound into the aperture.
This is the size we need to use when computing the maximum possible
aperture space that could be used by a single batchbuffer and so avoid
hitting ENOSPC.
Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
It makes sure that GPU object destruction is executed in order with
respect to the previous FIFO commands.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Both the consumers of this API (sync objects and client throttling)
were expecting this behavior. The kernel used to actually behave the
desired (but incorrect) way for us anyway, but that got fixed a while
back.
Daniel Vetter
Matt Turner
Marcin Slusarz
Ben Widawsky
Yuanhan Liu
Chih-Wei Huang
Chris Wilson
Ilija Hadzic
Dave Airlie
Javier Jardón
Ben Skeggs
Kristian Høgsberg
Benjamin Franzke
nobled
Marek Olšák
Francisco Jerez
Eric Anholt