3de09aa3b3
Since the pagefault path determines that the lock order we use has to be mmap_sem -> struct_mutex, we can't allow page faults to occur while the struct_mutex is held. To fix this in pwrite, we first try optimistically to see if we can copy from user without faulting. If it fails, fall back to using get_user_pages to pin the user's memory, and map those pages atomically when copying it to the GPU. Signed-off-by: Eric Anholt <eric@anholt.net> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> |
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| .. | ||
| dvo_ch7xxx.c | ||
| dvo_ch7017.c | ||
| dvo_ivch.c | ||
| dvo_sil164.c | ||
| dvo_tfp410.c | ||
| dvo.h | ||
| i915_dma.c | ||
| i915_drv.c | ||
| i915_drv.h | ||
| i915_gem_debug.c | ||
| i915_gem_proc.c | ||
| i915_gem_tiling.c | ||
| i915_gem.c | ||
| i915_ioc32.c | ||
| i915_irq.c | ||
| i915_mem.c | ||
| i915_opregion.c | ||
| i915_reg.h | ||
| i915_suspend.c | ||
| intel_bios.c | ||
| intel_bios.h | ||
| intel_crt.c | ||
| intel_display.c | ||
| intel_drv.h | ||
| intel_dvo.c | ||
| intel_fb.c | ||
| intel_hdmi.c | ||
| intel_i2c.c | ||
| intel_lvds.c | ||
| intel_modes.c | ||
| intel_sdvo_regs.h | ||
| intel_sdvo.c | ||
| intel_tv.c | ||
| Makefile | ||