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read-only mirror of https://gitlab.freedesktop.org/mesa/drm
597725e951
Seemingly the 64-bit int is always aligned to 8 in LP64.
But this is not hold in LP32.
Consequently sizeof(gralloc_drm_handle_t) are different
between LP64 (which is 18 ints) and LP32 (which is 16 ints).
As a result, 32-bit apps will crash in 64-bit OS since the
checking handle->base.numInts != GRALLOC_GBM_HANDLE_NUM_INTS
is true.
Fix it by always aligning 64-bit int to 8. Besides, to avoid
additional padding, just exchange the order of data_owner
and modifier. It aligns modifier to 8 natually.
This makes gralloc_drm_handle_t fit in 16 ints perfectly.
(v2) gralloc_drm_handle.h patch now applied in gralloc_handle.h
and GRALLOC_HANDLE_VERSION updated to 4
Reported-by: Mauro Rossi <issor.oruam@gmail.com>
Signed-off-by: Chih-Wei Huang <cwhuang@linux.org.tw>
Reviewed-by: Robert Foss <robert.foss@collabora.com>
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|---|---|---|
| amdgpu | ||
| android | ||
| data | ||
| etnaviv | ||
| exynos | ||
| freedreno | ||
| include/drm | ||
| intel | ||
| libkms | ||
| m4 | ||
| man | ||
| nouveau | ||
| omap | ||
| radeon | ||
| tegra | ||
| tests | ||
| vc4 | ||
| .editorconfig | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| Android.common.mk | ||
| Android.mk | ||
| autogen.sh | ||
| CleanSpec.mk | ||
| configure.ac | ||
| CONTRIBUTING.rst | ||
| libdrm.pc.in | ||
| libdrm_lists.h | ||
| libdrm_macros.h | ||
| libsync.h | ||
| Makefile.am | ||
| Makefile.sources | ||
| meson.build | ||
| meson_options.txt | ||
| README.rst | ||
| RELEASING | ||
| util_double_list.h | ||
| util_math.h | ||
| xf86atomic.h | ||
| xf86drm.c | ||
| xf86drm.h | ||
| xf86drmHash.c | ||
| xf86drmHash.h | ||
| xf86drmMode.c | ||
| xf86drmMode.h | ||
| xf86drmRandom.c | ||
| xf86drmRandom.h | ||
| xf86drmSL.c | ||
libdrm - userspace library for drm
This is libdrm, a userspace library for accessing the DRM, direct
rendering manager, on Linux, BSD and other operating systems that
support the ioctl interface. The library provides wrapper functions
for the ioctls to avoid exposing the kernel interface directly, and
for chipsets with drm memory manager, support for tracking relocations
and buffers. libdrm is a low-level library, typically used by
graphics drivers such as the Mesa DRI drivers, the X drivers, libva
and similar projects. New functionality in the kernel DRM drivers
typically requires a new libdrm, but a new libdrm will always work
with an older kernel.
Compiling
---------
libdrm has two build systems, a legacy autotools build system, and a newer
meson build system. The meson build system is much faster, and offers a
slightly different interface, but otherwise provides an equivalent feature set.
To use it:
meson builddir/
By default this will install into /usr/local, you can change your prefix
with --prefix=/usr (or `meson configure builddir/ -Dprefix=/usr` after
the initial meson setup).
Then use ninja to build and install:
ninja -C builddir/ install
If you are installing into a system location you will need to run install
separately, and as root.
Alternatively you can invoke autotools configure:
./configure
By default, libdrm will install into the /usr/local/ prefix. If you
want to install this DRM to replace your system copy, pass
--prefix=/usr and --exec-prefix=/ to configure. If you are building
libdrm from a git checkout, you first need to run the autogen.sh
script. You can pass any options to autogen.sh that you would other
wise pass to configure, or you can just re-run configure with the
options you need once autogen.sh finishes.
Next step is to build libdrm:
make
and once make finishes successfully, install the package using
make install
If you are installing into a system location, you will need to be root
to perform the install step.