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edf4427b80
linux_dsm_epyc7002/drivers/gpu/drm/i915
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Chris Wilson edf4427b80 drm/i915: Fallback to using CPU relocations for large batch buffers 
If the batch buffer is too large to fit into the aperture and we need a
GTT mapping for relocations, we currently fail. This only applies to a
subset of machines for a subset of environments, quite undesirable. We
can simply check after failing to insert the batch into the GTT as to
whether we only need a mappable binding for relocation and, if so, we can
revert to using a non-mappable binding and an alternate relocation
method. However, using relocate_entry_cpu() is excruciatingly slow for
large buffers on non-LLC as the entire buffer requires clflushing before
and after the relocation handling. Alternatively, we can implement a
third relocation method that only clflushes around the relocation entry.
This is still slower than updating through the GTT, so we prefer using
the GTT where possible, but is orders of magnitude faster as we
typically do not have to then clflush the entire buffer.

An alternative idea of using a temporary WC mapping of the backing store
is promising (it should be faster than using the GTT itself), but
requires fairly extensive arch/x86 support - along the lines of
kmap_atomic_prof_pfn() (which is not universally implemented even for
x86).

Testcase: igt/gem_exec_big #pnv,byt
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88392
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Add a WARN_ONCE for the impossible reloc case and explain in
a short comment why we want to avoid ping-pong.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-03-20 11:48:13 +01:00
..
dvo_ch7xxx.c
dvo_ch7017.c
dvo_ivch.c
dvo_ns2501.c
dvo_sil164.c
dvo_tfp410.c
dvo.h
i915_cmd_parser.c drm/i915: Fix vmap_batch page iterator overrun 2015-03-17 22:30:31 +01:00
i915_debugfs.c drm/i915: Fix sink crc connector iteration 2015-03-20 11:48:02 +01:00
i915_dma.c drm/i915: Export total subslice and EU counts 2015-03-17 22:30:31 +01:00
i915_drv.c drm/i915: Remove the preliminary_hw_support shackles from CHV 2015-03-17 22:30:29 +01:00
i915_drv.h drm/i915: Do not use ggtt_view with (aliasing) PPGTT 2015-03-20 11:48:03 +01:00
i915_gem_batch_pool.c drm/i915: Mark shadow batch buffers as purgeable 2014-12-16 10:39:09 +01:00
i915_gem_context.c drm/i915: Reset logical ring contexts' head and tail during GPU reset 2015-02-24 00:19:37 +01:00
i915_gem_debug.c
i915_gem_dmabuf.c
i915_gem_evict.c drm/i915: Add some extra guards in evict_vm 2015-01-06 09:07:59 +01:00
i915_gem_execbuffer.c drm/i915: Fallback to using CPU relocations for large batch buffers 2015-03-20 11:48:13 +01:00
i915_gem_gtt.c drm/i915: memory leak in __i915_gem_vma_create() 2015-03-20 11:48:12 +01:00
i915_gem_gtt.h drm/i915: Create page table allocators 2015-02-25 16:53:43 +01:00
i915_gem_render_state.c drm/i915: Remove obsolete seqno parameter from 'i915_add_request' 2014-12-03 09:35:19 +01:00
i915_gem_render_state.h
i915_gem_stolen.c Linux 4.0-rc3 2015-03-09 19:58:30 +10:00
i915_gem_tiling.c drm/i915: Check obj->vma_list under the struct_mutex 2015-02-24 15:30:42 +02:00
i915_gem_userptr.c drm/i915: Prevent use-after-free in invalidate_range_start callback 2015-02-05 16:31:30 +02:00
i915_gem.c drm/i915: Turn on PIN_GLOBAL in i915_gem_object_ggtt_pin 2015-03-20 11:48:12 +01:00
i915_gpu_error.c drm/i915: Add process identifier to requests 2015-02-13 23:28:37 +01:00
i915_ioc32.c drm/i915: remove redundant #ifdef CONFIG_COMPAT 2014-10-24 16:34:07 +02:00
i915_irq.c drm/i915/skl: Enabling processing of Turbo interrupts 2015-03-17 22:30:27 +01:00
i915_params.c drm/i915: Disable the mmio.debug WARN after it fires 2015-03-17 22:30:00 +01:00
i915_reg.h drm/i915/skl: Added new macros 2015-03-17 22:30:22 +01:00
i915_suspend.c drm/i915: Remove regfile code&data for UMS suspend/resume 2015-02-27 18:10:39 +01:00
i915_sysfs.c drm/i915/skl: Updated the act_freq_mhz_show sysfs function 2015-03-17 22:30:25 +01:00
i915_trace_points.c
i915_trace.h drm/i915/trace: Fix offsets for 64b 2015-02-13 23:28:11 +01:00
i915_vgpu.c drm/i915: Adds graphic address space ballooning logic 2015-02-13 23:28:23 +01:00
i915_vgpu.h drm/i915: Add ULL postfix to VGT_MAGIC constant 2015-03-17 22:30:18 +01:00
intel_acpi.c
intel_atomic_plane.c drm/i915: Rotation property is now handled in DRM core 2015-03-10 09:59:33 +01:00
intel_atomic.c drm/i915: Set crtc backpointer when duplicating crtc state 2015-03-17 22:29:53 +01:00
intel_audio.c drm/i915: Make intel_crtc->config a pointer 2015-01-27 09:50:50 +01:00
intel_bios.c drm/i915/skl: Support for edp low_vswing param in vbt 2015-02-25 16:06:00 +01:00
intel_bios.h drm/i915/skl: Support for edp low_vswing param in vbt 2015-02-25 16:06:00 +01:00
intel_crt.c drm/i915: Add atomic_get_property entrypoint for connectors (v2) 2015-01-27 09:57:10 +01:00
intel_ddi.c drm/i915/skl: Add support for edp 1.4 intermediate frequencies 2015-03-17 22:29:57 +01:00
intel_display.c Merge tag 'drm-intel-fixes-2015-03-19' into drm-intel-next 2015-03-20 11:44:34 +01:00
intel_dp_mst.c drm/i915: Unconfuse DP link rate array names 2015-03-20 11:48:10 +01:00
intel_dp.c drm/i915/dp: return number of bytes written for short aux/i2c writes 2015-03-20 11:48:11 +01:00
intel_drv.h drm/i915: Unconfuse DP link rate array names 2015-03-20 11:48:10 +01:00
intel_dsi_panel_vbt.c drm/i915/dsi: remove intel_dsi_cmd.c and the unused functions therein 2015-01-29 16:57:14 +01:00
intel_dsi_pll.c drm/i915: Use DSI Pll1 for enabling MIPI DSI on Port C 2014-12-10 17:47:21 +01:00
intel_dsi.c Merge tag 'drm-intel-next-2015-02-14' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-03-05 09:41:09 +10:00
intel_dsi.h drm/i915/dsi: add drm mipi dsi host support 2015-01-29 16:51:39 +01:00
intel_dvo.c drm/i915: Add atomic_get_property entrypoint for connectors (v2) 2015-01-27 09:57:10 +01:00
intel_fbc.c drm/i915: add frontbuffer tracking to FBC 2015-03-17 22:29:56 +01:00
intel_fbdev.c drm/i915: Make sure we invalidate frontbuffer on fbcon. 2015-03-17 22:30:14 +01:00
intel_fifo_underrun.c drm/i915: Check for driver readyness before handling an underrun interrupt 2015-03-04 10:04:19 +02:00
intel_frontbuffer.c drm/i915: add frontbuffer tracking to FBC 2015-03-17 22:29:56 +01:00
intel_hdmi.c drm/i915: Add atomic_get_property entrypoint for connectors (v2) 2015-01-27 09:57:10 +01:00
intel_i2c.c
intel_lrc.c Linux 4.0-rc3 2015-03-09 19:58:30 +10:00
intel_lrc.h drm/i915: Rename 'flags' to 'dispatch_flags' for better code reading 2015-02-25 22:43:29 +01:00
intel_lvds.c drm/i915: Use enabled value from crtc_state rather than crtc (v2) 2015-02-26 00:14:02 +01:00
intel_modes.c
intel_opregion.c drm/i915: Remove DRIVER_MODESET checks from modeset code 2015-02-27 18:10:53 +01:00
intel_overlay.c drm/i915: Remove DRIVER_MODESET checks from modeset code 2015-02-27 18:10:53 +01:00
intel_panel.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-02-16 15:48:00 -08:00
intel_pm.c drm/i915/skl: Enable the RPS interrupts programming 2015-03-17 22:30:27 +01:00
intel_psr.c drm/i915/skl: Enabling PSR on Skylake 2015-01-28 17:22:29 +01:00
intel_renderstate_gen6.c drm/i915: Add headers to the various render state 2014-12-10 17:47:23 +01:00
intel_renderstate_gen7.c drm/i915: Add headers to the various render state 2014-12-10 17:47:23 +01:00
intel_renderstate_gen8.c drm/i915: Add headers to the various render state 2014-12-10 17:47:23 +01:00
intel_renderstate_gen9.c drm/i915: Add headers to the various render state 2014-12-10 17:47:23 +01:00
intel_renderstate.h drm/i915 Add golden context support for Gen9 2014-11-04 14:04:55 +01:00
intel_ringbuffer.c drm/i915: fix simple_return.cocci warnings 2015-03-17 22:30:00 +01:00
intel_ringbuffer.h drm/i915: add frontbuffer tracking to FBC 2015-03-17 22:29:56 +01:00
intel_runtime_pm.c drm/i915: Spelling s/auxilliary/auxiliary/ 2015-03-17 22:30:12 +01:00
intel_sdvo_regs.h
intel_sdvo.c drm/i915: Fix trivial typos in comments and warning message 2015-03-17 22:29:48 +01:00
intel_sideband.c drm/i915: Correct the IOSF Dev_FN field for IOSF transfers 2015-02-09 14:26:19 +02:00
intel_sprite.c drm/i915: Use plane->state->fb instead of plane->fb in intel_plane_restore() 2015-03-17 22:30:20 +01:00
intel_tv.c drm/i915: Add atomic_get_property entrypoint for connectors (v2) 2015-01-27 09:57:10 +01:00
intel_uncore.c drm/i915: Disable the mmio.debug WARN after it fires 2015-03-17 22:30:00 +01:00
Kconfig drm/i915/dsi: add drm mipi dsi host support 2015-01-29 16:51:39 +01:00
Makefile drm/i915: Remove regfile code&data for UMS suspend/resume 2015-02-27 18:10:39 +01:00