CVSROOT: /cvs
Module name: src
Changes by: kette...@cvs.openbsd.org 2014/02/13 16:11:06
Modified files:
sys/dev/pci/drm/i915: i915_gem.c
sys/arch/i386/i386: trap.c
sys/arch/i386/include: cpu.h
sys/arch/amd64/amd64: trap.c
sys/arch/amd64/include: cpu.h
Log message:
Some Linux i915 drm "fast" path code relies on being able to "disable" page
faults to avoid sleeping. Implement this functionality for i386 and amd64
for faults in the user address space. If the ci_inatomic flag is set in
struct cpu_info, copyin(9) and copyout(9) will return EFAULT when a user-space
address needs to be faulted in. Use this to properly implement
__copy_to_user_inatomic() and __copy_from_user_inatomic_nocache() in the
inteldrm(4) code.
ok krw@, guenther@
