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2733ea144d
linux_dsm_epyc7002/drivers/gpu/drm
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Jason Gunthorpe 2733ea144d mm/hmm: remove the customizable pfn format from hmm_range_fault 
Presumably the intent here was that hmm_range_fault() could put the data
into some HW specific format and thus avoid some work. However, nothing
actually does that, and it isn't clear how anything actually could do that
as hmm_range_fault() provides CPU addresses which must be DMA mapped.

Perhaps there is some special HW that does not need DMA mapping, but we
don't have any examples of this, and the theoretical performance win of
avoiding an extra scan over the pfns array doesn't seem worth the
complexity. Plus pfns needs to be scanned anyhow to sort out any
DEVICE_PRIVATE pages.

This version replaces the uint64_t with an usigned long containing a pfn
and fixed flags. On input flags is filled with the HMM_PFN_REQ_* values,
on successful output it is filled with HMM_PFN_* values, describing the
state of the pages.

amdgpu is simple to convert, it doesn't use snapshot and doesn't use
per-page flags.

nouveau uses only 16 hmm_pte entries at most (ie fits in a few cache
lines), and it sweeps over its pfns array a couple of times anyhow. It
also has a nasty call chain before it reaches the dma map and hardware
suggesting performance isn't important:

   nouveau_svm_fault():
     args.i.m.method = NVIF_VMM_V0_PFNMAP
     nouveau_range_fault()
      nvif_object_ioctl()
       client->driver->ioctl()
	  struct nvif_driver nvif_driver_nvkm:
	    .ioctl = nvkm_client_ioctl
	   nvkm_ioctl()
	    nvkm_ioctl_path()
	      nvkm_ioctl_v0[type].func(..)
	      nvkm_ioctl_mthd()
	       nvkm_object_mthd()
		  struct nvkm_object_func nvkm_uvmm:
		    .mthd = nvkm_uvmm_mthd
		   nvkm_uvmm_mthd()
		    nvkm_uvmm_mthd_pfnmap()
		     nvkm_vmm_pfn_map()
		      nvkm_vmm_ptes_get_map()
		       func == gp100_vmm_pgt_pfn
			struct nvkm_vmm_desc_func gp100_vmm_desc_spt:
			  .pfn = gp100_vmm_pgt_pfn
			 nvkm_vmm_iter()
			  REF_PTES == func == gp100_vmm_pgt_pfn()
			    dma_map_page()

Link: https://lore.kernel.org/r/5-v2-b4e84f444c7d+24f57-hmm_no_flags_jgg@mellanox.com
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Tested-by: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-05-11 10:47:29 -03:00
..
amd mm/hmm: remove the customizable pfn format from hmm_range_fault 2020-05-11 10:47:29 -03:00
arc drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
arm drm/komeda: mark PM functions as __maybe_unused 2020-03-06 11:25:58 +08:00
armada drm: Remove drm_fb_helper add, add all and remove connector calls 2020-03-06 14:19:58 +01:00
aspeed
ast drm/ast: Use simple encoder 2020-03-02 09:22:43 +01:00
atmel-hlcdc drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
bochs Linux 5.6 2020-03-31 15:15:47 +10:00
bridge drm/bridge: anx6345: set correct BPC for display_info of connector 2020-04-14 19:30:36 +02:00
cirrus drm/cirrus: add drm_driver.release callback. 2020-02-12 10:24:08 +01:00
etnaviv drm/etnaviv: fix TS cache flushing on GPUs with BLT engine 2020-03-20 18:40:44 +01:00
exynos drm/bridge: analogix_dp: Split bind() into probe() and real bind() 2020-04-09 10:29:35 +02:00
fsl-dcu drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
gma500 drm: Remove drm_fb_helper add, add all and remove connector calls 2020-03-06 14:19:58 +01:00
hisilicon Linux 5.6-rc5 2020-03-11 07:27:21 +10:00
i2c drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
i810 drm/i810: Don't include <drm/drm_pci.h> 2019-12-05 08:44:12 +01:00
i915 drm/i915: Use proper fault mask in interrupt postinstall too 2020-04-28 16:38:03 -07:00
imx drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
ingenic drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
lib
lima drm-misc-next for 5.7: 2020-02-21 05:44:40 +10:00
mcde drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
mediatek sound updates for 5.7-rc1 2020-04-02 15:50:04 -07:00
meson drm/meson: Delete an error message in meson_dw_hdmi_bind() 2020-04-15 10:20:01 +02:00
mga drm/mga: Don't include <drm/drm_pci.h> 2019-12-05 08:44:16 +01:00
mgag200 drm/mgag200: Use simple encoder 2020-03-02 09:22:49 +01:00
msm IOMMU Updates for Linux v5.7 2020-04-08 11:00:00 -07:00
mxsfb drm/panel: decouple connector from drm_panel 2019-12-09 22:57:26 +01:00
nouveau mm/hmm: remove the customizable pfn format from hmm_range_fault 2020-05-11 10:47:29 -03:00
omapdrm ARM: driver updates 2020-04-03 15:05:35 -07:00
panel drm/panel-simple: drop use of data-mapping property 2020-03-25 21:59:22 +01:00
panfrost drm-misc-next for 5.7: 2020-03-12 12:42:56 +10:00
pl111 drm/pl111: Support Integrator IM-PD1 module 2020-02-16 14:31:30 +01:00
qxl drm/qxl: qxl_release use after free 2020-04-29 13:21:34 +02:00
r128 drm/r128: Don't include <drm/drm_pci.h> 2019-12-05 08:44:23 +01:00
radeon pci-v5.7-changes 2020-04-03 14:25:02 -07:00
rcar-du drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
rockchip drm/bridge: analogix_dp: Split bind() into probe() and real bind() 2020-04-09 10:29:35 +02:00
savage drm/savage: Don't include <drm/drm_pci.h> 2019-12-05 08:44:34 +01:00
scheduler drm/scheduler: fix drm_sched_get_cleanup_job 2020-04-15 11:09:13 +02:00
selftests drm/modes: Make sure to parse valid rotation value from cmdline 2020-02-12 18:32:54 +01:00
shmobile
sis drm/sis: Don't include <drm/drm_pci.h> 2019-12-05 08:44:55 +01:00
sti drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
stm drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
sun4i Linux 5.6-rc5 2020-03-11 07:27:21 +10:00
tdfx drm/tdfx: Don't include <drm/drm_pci.h> 2019-12-05 08:45:01 +01:00
tegra drm/tegra: Changes for v5.7-rc1 2020-03-19 10:11:09 +10:00
tidss drm/tidss: fix crash related to accessing freed memory 2020-04-20 10:07:35 +03:00
tilcdc drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
tiny drm/tiny: fix sparse warning: incorrect type in assignment (different base types) 2020-03-14 08:31:30 +01:00
ttm drm fixes for 5.7-rc1 (part two) 2020-04-10 12:38:28 -07:00
tve200 drm: get drm_bridge_panel connector via helper 2019-12-09 22:57:26 +01:00
udl drm/udl: Clear struct drm_connector_funcs.dpms 2020-02-10 09:24:09 +01:00
v3d drm/v3d: Replace wait_for macros to remove use of msleep 2020-03-04 22:15:34 -08:00
vboxvideo drm/vboxvideo: Add missing remove_conflicting_pci_framebuffers call, v2 2020-03-26 17:03:03 +01:00
vc4 drm/vc4: Fix HDMI mode validation 2020-03-27 13:38:47 +01:00
vgem drm/vgem: Close use-after-free race in vgem_gem_create 2020-02-06 19:04:41 +01:00
via Merge branch 'akpm' (patches from Andrew) 2020-01-31 12:16:36 -08:00
virtio A few resources-related fixes for qxl, some doc build warnings and ioctl 2020-05-01 10:42:09 +10:00
vkms drm/vkms: Convert to CRTC VBLANK callbacks 2020-02-13 13:10:10 +01:00
vmwgfx Merge branch 'ttm-transhuge' of git://people.freedesktop.org/~thomash/linux into drm-next 2020-04-03 09:07:49 +10:00
xen drm/xen: fix passing zero to 'PTR_ERR' warning 2020-03-31 17:14:51 +02:00
zte drm/zte: plane_state->fb iff plane_state->crtc 2020-01-28 15:43:58 +01:00
drm_agpsupport.c drm: use DIV_ROUND_UP helper macro for calculations 2019-11-04 18:17:36 +01:00
drm_atomic_helper.c drm/bridge: Add the necessary bits to support bus format negotiation 2020-01-31 16:39:53 +01:00
drm_atomic_state_helper.c drm/atomic-helper: fix kerneldoc 2020-02-15 13:21:22 +01:00
drm_atomic_uapi.c drm/atomic: Spell CRTC consistently 2019-12-22 11:13:00 +01:00
drm_atomic.c drm/bridge: Fix the bridge kernel doc 2020-02-18 16:50:45 +01:00
drm_auth.c drm/auth: Drop master_create/destroy hooks 2020-01-29 09:14:11 +01:00
drm_blend.c drm: two planes with the same zpos have undefined ordering 2019-10-09 20:04:55 +02:00
drm_bridge_connector.c drm: Add helper to create a connector for a chain of bridges 2020-02-26 13:31:41 +02:00
drm_bridge.c drm: Add helper to create a connector for a chain of bridges 2020-02-26 13:31:41 +02:00
drm_bufs.c drm: bufs: Clean up documentation 2020-03-16 09:26:18 +01:00
drm_cache.c drm/gpu: Fix Memory barrier without comment Issue 2019-10-25 09:35:06 +02:00
drm_client_modeset.c Linux 5.6-rc5 2020-03-11 07:27:21 +10:00
drm_client.c drm/client: Dual licence the file in GPL-2 and MIT 2020-02-29 00:16:12 +01:00
drm_color_mgmt.c drm: Inline drm_color_lut_extract() 2019-11-29 21:29:17 +02:00
drm_connector.c drm/connector: Add helper to get a connector type name 2020-02-26 13:31:18 +02:00
drm_context.c drm: context: Clean up documentation 2020-03-16 09:23:55 +01:00
drm_crtc_helper_internal.h
drm_crtc_helper.c drm: drop unused drm_crtc callback 2020-02-15 21:15:17 +01:00
drm_crtc_internal.h drm: Add getfb2 ioctl 2020-01-14 16:22:17 -05:00
drm_crtc.c
drm_damage_helper.c drm: damage_helper: Fix race checking plane->state->fb 2019-10-08 09:41:06 -04:00
drm_debugfs_crc.c drm/crc: Actually allow to change the crc source 2020-01-28 16:49:22 +01:00
drm_debugfs.c drm/debugfs: also take per device driver features into account 2020-01-25 15:49:11 +02:00
drm_dma.c drm: fix parameters documentation style in drm_dma 2020-01-18 10:33:12 +01:00
drm_dp_aux_dev.c drm/dp_mst: Add MST support to DP DPCD R/W functions 2020-01-09 18:07:46 -05:00
drm_dp_cec.c drm_dp_cec: drop use of drmP.h 2019-10-08 18:29:00 +02:00
drm_dp_dual_mode_helper.c
drm_dp_helper.c UAPI Changes: 2020-03-19 10:40:27 +10:00
drm_dp_mst_topology_internal.h
drm_dp_mst_topology.c drm/dp_mst: Fix drm_dp_send_dpcd_write() return code 2020-04-27 12:50:18 -04:00
drm_drv.c drm: Nerf drm_global_mutex BKL for good drivers 2020-02-11 15:03:09 +01:00
drm_dsc.c
drm_dumb_buffers.c
drm_edid_load.c
drm_edid.c drm/edid: Fix off-by-one in DispID DTD pixel clock 2020-04-24 16:37:03 +03:00
drm_encoder_slave.c
drm_encoder.c drm/bridge: Make the bridge chain a double-linked list 2019-12-09 10:03:01 +01:00
drm_fb_cma_helper.c drm/fb-cma-helpers: Fix include issue 2020-01-09 17:33:41 +01:00
drm_fb_helper.c drm: Remove unused arg from drm_fb_helper_init 2020-03-06 14:19:57 +01:00
drm_file.c drm/vmwgfx: Hook up the helpers to align buffer objects 2020-03-24 18:50:35 +01:00
drm_flip_work.c
drm_format_helper.c drm/format_helper: Dual licence the file in GPL 2 and MIT 2020-02-17 10:27:13 +01:00
drm_fourcc.c drm/fourcc: Fill out all block sizes for P210 2019-11-28 11:19:32 +01:00
drm_framebuffer.c drm: Add getfb2 ioctl 2020-01-14 16:22:17 -05:00
drm_gem_cma_helper.c
drm_gem_framebuffer_helper.c drm/gem-fb-helper: convert to drm device based logging 2019-12-19 15:55:10 +02:00
drm_gem_shmem_helper.c drm/shmem: drop pgprot_decrypted() 2020-03-02 07:13:19 +01:00
drm_gem_ttm_helper.c drm/ttm: fix mmap refcounting 2019-11-15 08:00:08 +01:00
drm_gem_vram_helper.c drm/vram: Add helpers to validate a display mode's memory requirements 2020-02-06 10:32:54 +01:00
drm_gem.c drm: Mark up racy check of drm_gem_object.handle_count 2020-03-16 10:31:35 +00:00
drm_hashtab.c
drm_hdcp.c drm/hdcp: optimizing the srm handling 2020-03-04 06:33:00 +05:30
drm_internal.h drm/hdcp: optimizing the srm handling 2020-03-04 06:33:00 +05:30
drm_ioc32.c
drm_ioctl.c drm: Add getfb2 ioctl 2020-01-14 16:22:17 -05:00
drm_irq.c drm/irq: remove check on dev->dev_private 2020-02-11 18:39:47 +02:00
drm_kms_helper_common.c
drm_lease.c drm/lease: fix WARNING in idr_destroy 2020-03-18 14:42:18 +01:00
drm_legacy_misc.c
drm_legacy.h
drm_lock.c drm: lock: Clean up documentation 2020-03-16 09:27:09 +01:00
drm_memory.c
drm_mipi_dbi.c drm/mipi-dbi: Remove sending of vblank event 2020-01-30 09:00:45 +01:00
drm_mipi_dsi.c drm/dsi: add helpers for DSI compression mode and PPS packets 2019-11-07 15:00:16 +02:00
drm_mm.c drm/mm: revert "Break long searches in fragmented address spaces" 2020-03-31 17:35:56 +02:00
drm_mode_config.c drm/modeset: Prime modeset lock vs dma_resv 2019-11-21 11:03:31 +01:00
drm_mode_object.c drm/property: Enforce more lifetime rules 2019-11-04 18:17:36 +01:00
drm_modes.c drm/modes: Make sure to parse valid rotation value from cmdline 2020-02-12 18:32:54 +01:00
drm_modeset_helper.c
drm_modeset_lock.c
drm_of.c drm: of: Add drm_of_lvds_get_dual_link_pixel_order 2019-12-18 02:40:16 +02:00
drm_panel_orientation_quirks.c
drm_panel.c drm/drm_panel: Fix EXPORT of drm_panel_of_backlight() one more time 2019-12-17 20:39:33 +01:00
drm_pci.c drm: Make drm_pci_agp_init legacy 2020-03-09 09:22:50 +00:00
drm_plane_helper.c
drm_plane.c
drm_prime.c drm/prime: fix extracting of the DMA addresses from a scatterlist 2020-04-05 10:44:12 -04:00
drm_print.c drm/print: convert debug category macros into an enum 2019-11-14 14:08:57 +02:00
drm_probe_helper.c drm: Stop accessing encoder->bridge directly 2019-12-09 10:02:45 +01:00
drm_property.c drm: limit to INT_MAX in create_blob ioctl 2019-12-04 19:44:13 -08:00
drm_rect.c drm/rect: update kerneldoc for drm_rect_clip_scaled() 2019-11-28 13:15:43 +01:00
drm_scatter.c drm: prevent a harmless integer overflow in drm_legacy_sg_alloc() 2020-02-29 00:16:12 +01:00
drm_scdc_helper.c
drm_self_refresh_helper.c drm/atomic: fix self-refresh helpers crtc state dereference 2019-11-06 13:00:21 -05:00
drm_simple_kms_helper.c drm/simple-kms: Fix documentation for drm_simple_encoder_init() 2020-03-06 09:24:29 +01:00
drm_syncobj.c drm/syncobj: Add documentation for timeline syncobj 2020-01-20 14:22:21 +01:00
drm_sysfs.c drm: sysfs: Use scnprintf() for avoiding potential buffer overflow 2020-03-11 14:54:09 +01:00
drm_trace_points.c
drm_trace.h
drm_vblank.c drm/vblank: Fix documentation of VBLANK timestamp helper 2020-03-06 09:24:54 +01:00
drm_vm.c drm: vm: Clean up documentation 2020-03-16 09:25:22 +01:00
drm_vma_manager.c
drm_vram_helper_common.c
drm_writeback.c
Kconfig drm: unbreak the DRM menu, broken by DRM_EXPORT_FOR_TESTS 2020-03-06 11:15:43 +00:00
Makefile drm: Add helper to create a connector for a chain of bridges 2020-02-26 13:31:41 +02:00