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| author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2016-03-22 22:29:00 +0100 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2016-03-26 18:54:21 +0100 |
| commit | 60a8c5c7894ae034ace50f5f5f231f7bdbe0e203 (patch) | |
| tree | 1b77dffd13cffbb35693f67e8a71bfddb9f19211 /package/qt5/qt5script/qt5script.mk | |
| parent | 3c955d784bfbcd632be4ca2065875bd9da847822 (diff) | |
| download | buildroot-60a8c5c7894ae034ace50f5f5f231f7bdbe0e203.tar.gz buildroot-60a8c5c7894ae034ace50f5f5f231f7bdbe0e203.zip | |
libdrm: adjust the ARM patch to work on ARMv4/ARMv5
The ARM patch that was added in commit
94841d87fd2ff8ebf7af84d49e5095074958febf ("libdrm: fix support for
xserver with Vivante drivers") makes the assumption that ldrex/strex
is available on ARM. While this is true on ARMv6+, it is not true on
ARMv4/ARMv5. Due to this, we had to make follow-up commits like
7bac31ceea1b52986b1773a1bd4841110672f923
("package/x11r7/xserver_xorg-server: dri needs arm >= v6") and more is
needed in the reverse dependencies to disable DRI usage on
ARMv4/ARMv5.
In fact, it turns out that the CAS code in libdrm is only an
optimization, and it will gracefully fall back to a system call based
lock/unlock mechanism.
So we simply change the patch to only provide the optimized CAS
implementation on ARMv6+. The original reason for this patch was to
fix Vivante drivers, and Vivante GPUs are only used in ARMv6+ cores,
so we should be fine (famous last words).
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'package/qt5/qt5script/qt5script.mk')
0 files changed, 0 insertions, 0 deletions
