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linux-6.1.y
linux-stable/include/drm
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Zack Rusin ef7efa60a3 drm/ttm: Make sure the mapped tt pages are decrypted when needed 
commit 71ce046327 upstream.

Some drivers require the mapped tt pages to be decrypted. In an ideal
world this would have been handled by the dma layer, but the TTM page
fault handling would have to be rewritten to able to do that.

A side-effect of the TTM page fault handling is using a dma allocation
per order (via ttm_pool_alloc_page) which makes it impossible to just
trivially use dma_mmap_attrs. As a result ttm has to be very careful
about trying to make its pgprot for the mapped tt pages match what
the dma layer thinks it is. At the ttm layer it's possible to
deduce the requirement to have tt pages decrypted by checking
whether coherent dma allocations have been requested and the system
is running with confidential computing technologies.

This approach isn't ideal but keeping TTM matching DMAs expectations
for the page properties is in general fragile, unfortunately proper
fix would require a rewrite of TTM's page fault handling.

Fixes vmwgfx with SEV enabled.

v2: Explicitly include cc_platform.h
v3: Use CC_ATTR_GUEST_MEM_ENCRYPT instead of CC_ATTR_MEM_ENCRYPT to
limit the scope to guests and log when memory decryption is enabled.

Signed-off-by: Zack Rusin <zack.rusin@broadcom.com>
Fixes: 3bf3710e37 ("drm/ttm: Add a generic TTM memcpy move for page-based iomem")
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Christian König <christian.koenig@amd.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: <stable@vger.kernel.org> # v5.14+
Link: https://patchwork.freedesktop.org/patch/msgid/20230926040359.3040017-1-zack@kde.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Ye Li <ye.li@broadcom.com>
Signed-off-by: Ajay Kaher <ajay.kaher@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-12-14 19:54:54 +01:00
..
bridge drm: bridge: dw_hdmi: Audio: Add General Parallel Audio (GPA) driver 2022-04-19 18:23:48 +02:00
display drm/dp_mst: Fix resetting msg rx state after topology removal 2024-12-14 19:54:35 +01:00
i2c
ttm drm/ttm: Make sure the mapped tt pages are decrypted when needed 2024-12-14 19:54:54 +01:00
amd_asic_type.h drm/amdgpu: add new asic_type for IP discovery 2021-10-04 15:23:01 -04:00
drm_aperture.h drm/aperture: Remove primary argument 2023-08-30 16:10:57 +02:00
drm_atomic_helper.h drm: drm_atomic_helper: Add a new helper to deal with the writeback connector validation 2022-09-05 20:12:16 -01:00
drm_atomic_state_helper.h drm/bridge: Add a drm_bridge_state object 2020-01-31 16:00:21 +01:00
drm_atomic_uapi.h drm: handle kernel fences in drm_gem_plane_helper_prepare_fb v2 2022-05-02 09:01:51 +02:00
drm_atomic.h drm/atomic: fix warning of unused variable 2022-06-09 16:09:46 +02:00
drm_audio_component.h ALSA: hda/i915 - fix list corruption with concurrent probes 2020-10-09 16:46:04 +02:00
drm_auth.h drm: clarify usage of drm leases 2021-07-29 09:12:01 +02:00
drm_blend.h drm: Add per-plane pixel blend mode property 2018-08-24 17:31:37 +01:00
drm_bridge_connector.h drm: Add helper to create a connector for a chain of bridges 2020-02-26 13:31:41 +02:00
drm_bridge.h drm/bridge: Fix typo in post_disable() description 2024-01-25 15:27:32 -08:00
drm_buddy.h drm/selftests: add drm buddy alloc range testcase 2022-02-23 10:44:43 +01:00
drm_cache.h LoongArch: Add writecombine support for drm 2022-06-03 20:09:27 +08:00
drm_client.h dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_color_mgmt.h drm: using mul_u32_u32() requires linux/math64.h 2024-02-05 20:13:00 +00:00
drm_connector.h drm/edid: add a quirk for two LG monitors to get them to work on 10bpc 2022-12-31 13:32:59 +01:00
drm_crtc_helper.h drm: Split out drm_probe_helper.h 2019-01-24 13:20:42 +01:00
drm_crtc.h drm/crtc: Introduce drmm_crtc_init_with_planes 2022-07-13 10:46:05 +02:00
drm_damage_helper.h drm/plane: Move drm_plane_enable_fb_damage_clips into core 2021-07-27 12:21:22 +02:00
drm_debugfs_crc.h drm/crc: Only report a single overflow when a CRC fd is opened 2018-07-06 14:57:03 +02:00
drm_debugfs.h drm/debugfs: remove checks for return value of drm_debugfs functions. 2020-03-18 17:32:20 +01:00
drm_device.h drm: Declare hashtable as legacy 2021-11-30 09:41:28 +01:00
drm_displayid.h drm/displayid: convert to drm_edid 2022-05-13 18:55:13 +03:00
drm_drv.h drm: Return error codes from struct drm_driver.gem_create_object 2021-12-02 11:12:39 +01:00
drm_edid.h drm/edid: Handle EDID 1.4 range descriptor h/vfreq offsets 2022-09-02 16:38:51 +03:00
drm_encoder_slave.h drm: Remove linux/i2c.h from drm_crtc.h 2022-07-05 21:15:23 +03:00
drm_encoder.h drm/encoder: Introduce drmm_encoder_init 2022-07-13 10:46:05 +02:00
drm_fb_dma_helper.h drm/gem: rename GEM CMA helpers to GEM DMA helpers 2022-08-03 18:31:49 +02:00
drm_fb_helper.h drm: Remove linux/fb.h from drm_crtc.h 2022-07-05 21:14:02 +03:00
drm_file.h drm: Remove the drm_get_unmapped_area() helper 2022-08-04 11:39:27 -04:00
drm_fixed.h drm: Fix drm_fixp2int_round() making it add 0.5 2024-03-26 18:21:00 -04:00
drm_flip_work.h
drm_format_helper.h drm/format-helper: Add drm_fb_build_fourcc_list() helper 2022-09-12 09:15:49 +02:00
drm_fourcc.h drm/fourcc: Add drm_format_info.is_color_indexed flag 2022-07-09 15:00:08 +02:00
drm_framebuffer.h drm/fb: Improve drm_framebuffer.offsets documentation 2022-07-09 15:58:52 +02:00
drm_gem_atomic_helper.h dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_gem_dma_helper.h drm/gem: rename struct drm_gem_dma_object.{paddr => dma_addr} 2022-08-03 18:32:27 +02:00
drm_gem_framebuffer_helper.h drm/gem: Ignore color planes that are unused by framebuffer format 2022-05-19 19:25:02 +02:00
drm_gem_shmem_helper.h drm: correct comments 2022-07-21 12:16:10 +02:00
drm_gem_ttm_helper.h dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_gem_vram_helper.h dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_gem.h drm/msm/gem: Prevent blocking within shrinker loop 2023-03-22 13:33:39 +01:00
drm_ioctl.h drm: unexport drm_ioctl_permit 2021-08-13 17:50:48 +02:00
drm_lease.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
drm_legacy.h drm: Declare hashtable as legacy 2021-11-30 09:41:28 +01:00
drm_managed.h drm: fix drmm_mutex_init() 2023-05-30 14:03:20 +01:00
drm_mipi_dbi.h drm/probe-helper: Add drm_crtc_helper_mode_valid_fixed() 2022-09-12 09:14:26 +02:00
drm_mipi_dsi.h drm/mipi-dsi: Fix theoretical int overflow in mipi_dsi_dcs_write_seq() 2024-08-03 08:49:10 +02:00
drm_mm.h drm: Replace kernel.h with the necessary inclusions 2021-12-09 13:46:13 +01:00
drm_mode_config.h drm: remove allow_fb_modifiers 2022-01-31 21:45:24 +01:00
drm_mode_object.h drm/object: Add drm_object_property_get_default_value() function 2022-02-25 17:55:42 +01:00
drm_modes.h drm/modes: Add initializer macro DRM_MODE_INIT() 2022-09-12 09:14:59 +02:00
drm_modeset_helper_vtables.h drm/probe-helper: warn about negative .get_modes() 2024-04-03 15:19:36 +02:00
drm_modeset_helper.h drm: remove drmP.h from drm_modeset_helper.h 2019-02-07 21:48:34 +01:00
drm_modeset_lock.h drm/locking: fix drm_modeset_acquire_ctx kernel-doc 2022-01-20 14:41:25 +02:00
drm_module.h drm: Provide platform module-init macro 2022-01-19 18:40:18 +01:00
drm_of.h drm: of: Mark empty drm_of_get_data_lanes_count and drm_of_get_data_lanes_ep static 2022-06-12 16:07:05 +02:00
drm_panel.h drm/panel: drop DSC pps pointer 2022-09-18 09:38:06 -07:00
drm_pciids.h drm/radeon: change SPDX identifier to MIT 2018-10-15 16:16:12 -05:00
drm_plane_helper.h drm/plane-helper: Add the missing declaration of drm_atomic_state 2023-01-12 12:02:52 +01:00
drm_plane.h drm/plane: Allocate planes with drm_universal_plane_alloc() 2022-09-20 09:41:06 +02:00
drm_prime.h dma-buf-map: Rename to iosys-map 2022-02-07 16:35:35 -08:00
drm_print.h drm/printer: Allow NULL data in devcoredump printer 2024-10-17 15:21:46 +02:00
drm_privacy_screen_consumer.h drm/privacy-screen: Add notifier support (v2) 2021-10-14 13:12:25 +02:00
drm_privacy_screen_driver.h drm/privacy_screen: Add drvdata in drm_privacy_screen 2022-01-10 12:17:37 +01:00
drm_privacy_screen_machine.h drm/privacy-screen: Add X86 specific arch init code 2021-10-14 13:12:24 +02:00
drm_probe_helper.h drm/probe-helper: Add drm_crtc_helper_mode_valid_fixed() 2022-09-12 09:14:26 +02:00
drm_property.h drm: document drm_property_enum.value for bitfields 2021-07-26 10:08:22 +02:00
drm_rect.h drm/rect: Add DRM_RECT_INIT() macro 2022-06-27 13:45:48 +02:00
drm_self_refresh_helper.h drm/atomic: fix self-refresh helpers crtc state dereference 2019-11-06 13:00:21 -05:00
drm_simple_kms_helper.h drm/simple-kms: Support custom CRTC state 2021-08-08 20:14:08 +02:00
drm_syncobj.h drm/syncobj: add new drm_syncobj_add_point interface v4 2019-04-01 12:05:53 +02:00
drm_sysfs.h drm/sysfs: introduce drm_sysfs_connector_hotplug_event 2021-11-02 14:27:06 +01:00
drm_util.h drm: Move EXPORT_SYMBOL_FOR_TESTS_ONLY under a separate Kconfig 2019-11-07 21:22:15 +00:00
drm_utils.h drm: export drm_timeout_abs_to_jiffies 2019-03-07 12:00:30 -06:00
drm_vblank_work.h drm/vblank: Add vblank works 2020-07-16 18:16:31 -04:00
drm_vblank.h drm/vblank: Document drm_crtc_vblank_restore constraints 2021-02-10 12:38:55 +01:00
drm_vma_manager.h drm/drm_vma_manager: Add drm_vma_node_allow_once() 2023-02-01 08:34:42 +01:00
drm_writeback.h drm: introduce drm_writeback_connector_init_with_encoder() API 2022-05-02 02:12:59 +03:00
gma_drm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335 2019-06-05 17:37:06 +02:00
gpu_scheduler.h gpu/drm: Eliminate DRM_SCHED_PRIORITY_UNSET 2023-11-08 14:11:00 +01:00
gud.h drm/gud: Add GUD_PIXEL_FORMAT_RGB888 2021-10-04 12:06:14 +02:00
i915_component.h drm/i915/pxp: Define PXP component interface 2021-10-04 13:09:53 -04:00
i915_drm.h drm/i915: include uapi/drm/i915_drm.h directly where needed 2022-03-17 20:06:04 +02:00
i915_mei_hdcp_interface.h drm/display: Move HDCP helpers into display-helper module 2022-04-25 11:19:36 +02:00
i915_pciids.h drm/i915/dg2: Drop one PCI ID 2023-05-11 23:03:07 +09:00
i915_pxp_tee_interface.h drm/i915/pxp: Define PXP component interface 2021-10-04 13:09:53 -04:00
intel_lpe_audio.h
intel-gtt.h agp/intel: Rename intel-gtt symbols 2022-06-22 15:52:55 -07:00
spsc_queue.h
task_barrier.h drm: Add Reusable task barrier. 2019-12-18 16:09:12 -05:00