mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-03-09 07:34:02 +07:00
b50a53715f
This patch adds support for extending the pread/pwrite functionality for objects not backed by shmem. The access will be made through gtt interface. This will cover objects backed by stolen memory as well as other non-shmem backed objects. v2: Drop locks around slow_user_access, prefault the pages before access (Chris) v3: Rebased to the latest drm-intel-nightly (Ankit) v4: Moved page base & offset calculations outside the copy loop, corrected data types for size and offset variables, corrected if-else braces format (Tvrtko/kerneldocs) v5: Enabled pread/pwrite for all non-shmem backed objects including without tiling restrictions (Ankit) v6: Using pwrite_fast for non-shmem backed objects as well (Chris) v7: Updated commit message, Renamed i915_gem_gtt_read to i915_gem_gtt_copy, added pwrite slow path for non-shmem backed objects (Chris/Tvrtko) v8: Updated v7 commit message, mutex unlock around pwrite slow path for non-shmem backed objects (Tvrtko) v9: Corrected check during pread_ioctl, to avoid shmem_pread being called for non-shmem backed objects (Tvrtko) v10: Moved the write_domain check to needs_clflush and tiling mode check to pwrite_fast (Chris) v11: Use pwrite_fast fallback for all objects (shmem and non-shmem backed), call fast_user_write regardless of pagefault in previous iteration v12: Use page-by-page copy for slow user access too (Chris) v13: Handled EFAULT, Avoid use of WARN_ON, put_fence only if whole obj pinned (Chris) v14: Corrected datatypes/initializations (Tvrtko) Testcase: igt/gem_stolen, igt/gem_pread, igt/gem_pwrite Signed-off-by: Ankitprasad Sharma <ankitprasad.r.sharma@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465548783-19712-1-git-send-email-ankitprasad.r.sharma@intel.com |
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| amba | ||
| android | ||
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| atm | ||
| auxdisplay | ||
| base | ||
| bcma | ||
| block | ||
| bluetooth | ||
| bus | ||
| cdrom | ||
| char | ||
| clk | ||
| clocksource | ||
| connector | ||
| cpufreq | ||
| cpuidle | ||
| crypto | ||
| dax | ||
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| devfreq | ||
| dio | ||
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| eisa | ||
| extcon | ||
| firewire | ||
| firmware | ||
| fmc | ||
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| gpio | ||
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| hid | ||
| hsi | ||
| hv | ||
| hwmon | ||
| hwspinlock | ||
| hwtracing | ||
| i2c | ||
| ide | ||
| idle | ||
| iio | ||
| infiniband | ||
| input | ||
| iommu | ||
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| lguest | ||
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| md | ||
| media | ||
| memory | ||
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| misc | ||
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| net | ||
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| of | ||
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| usb | ||
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| xen | ||
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| Kconfig | ||
| Makefile | ||