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rzk avatar rzk commented on July 20, 2024

UMP locking needs /dev/umplock driver, which was missing in Mali-400
packages from MaliDeveloperhttp://www.malideveloper.com/developer-resources/drivers/index.phptill
r3p2 (released this month).
Standard UMP driver that is provided by r3p1 and less doesnt have UMP
locking compatibilities.

Please, correct me if I'm wrong.

Best Regards,
Dmitriy Beykun

2012/12/25 Siarhei Siamashka [email protected]

When UMP_LOCK_ENABLED is not in use, memory allocation is done without
UMP_REF_DRV_CONSTRAINT_USE_CACHE flag:

https://github.com/linux-sunxi/xf86-video-mali/blob/r3p0-04rel0/src/mali_exa.c#L312

As a result, fallbacks to software rendering have to work with uncached
memory, which is an order of magnitude slower. The missing header
"umplock_ioctl.h" can be snatched from the kernel sources.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/2.

from xf86-video-mali.

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