December 2023 - Patch2pr - mailweb.openeuler.org

[PATCH OLK-6.6 251/602] drm/mediatek: Fix iommu fault by swapping FBs after updating plane state
by pkwarcraft＠hotmail.com 05 Dec '23

05 Dec '23

From: "Jason-JH.Lin" <jason-jh.lin(a)mediatek.com> stable inclusion from stable-v6.6.2 commit 0776389bd8757f74f63dc756f4952ee2f7736097 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 3ec71e05ae6e7f46512e568ed81c92be589003dd ] According to the comment in drm_atomic_helper_async_commit(), we should make sure FBs have been swapped, so that cleanups in the new_state performs a cleanup in the old FB. So we should move swapping FBs after calling mtk_plane_update_new_state(), to avoid using the old FB which could be freed. Fixes: 1a64a7aff8da ("drm/mediatek: Fix cursor plane no update") Signed-off-by: Jason-JH.Lin <jason-jh.lin(a)mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno(a)collabora.com> Reviewed-by: CK Hu <ck.hu(a)mediatek.com> Reviewed-by: Alexandre Mergnat <amergnat(a)baylibre.com> Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230809125722.24… Signed-off-by: Chun-Kuang Hu <chunkuang.hu(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- drivers/gpu/drm/mediatek/mtk_drm_plane.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c index 5acb03b7c6fe..ddc9355b06d5 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c @@ -227,9 +227,9 @@ static void mtk_plane_atomic_async_update(struct drm_plane *plane, plane->state->src_y = new_state->src_y; plane->state->src_h = new_state->src_h; plane->state->src_w = new_state->src_w; - swap(plane->state->fb, new_state->fb); mtk_plane_update_new_state(new_state, new_plane_state); + swap(plane->state->fb, new_state->fb); wmb(); /* Make sure the above parameters are set before update */ new_plane_state->pending.async_dirty = true; mtk_drm_crtc_async_update(new_state->crtc, plane, state); -- 2.25.1

1 0

[PATCH OLK-6.6 250/602] drm/mediatek: Add mmsys_dev_num to mt8188 vdosys0 driver data
by pkwarcraft＠hotmail.com 05 Dec '23

05 Dec '23

From: "Jason-JH.Lin" <jason-jh.lin(a)mediatek.com> stable inclusion from stable-v6.6.2 commit bc46695b7c87b21bd9b9159143ff8b3baae07ca7 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ff64e4c31d969cdba20a41969edb3def15f3aaa0 ] Add missing mmsys_dev_num to mt8188 vdosys0 driver data. Fixes: 54b48080278a ("drm/mediatek: Add mediatek-drm of vdosys0 support for mt8188") Signed-off-by: Jason-JH.Lin <jason-jh.lin(a)mediatek.com> Reviewed-by: CK Hu <ck.hu(a)mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno(a)collabora.com> Reviewed-by: Fei Shao <fshao(a)chromium.org> Tested-by: Fei Shao <fshao(a)chromium.org> Link: https://patchwork.kernel.org/project/dri-devel/patch/20231004024013.18956-2… Signed-off-by: Chun-Kuang Hu <chunkuang.hu(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 93552d76b6e7..2d6a979afe8f 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -288,6 +288,7 @@ static const struct mtk_mmsys_driver_data mt8186_mmsys_driver_data = { static const struct mtk_mmsys_driver_data mt8188_vdosys0_driver_data = { .main_path = mt8188_mtk_ddp_main, .main_len = ARRAY_SIZE(mt8188_mtk_ddp_main), + .mmsys_dev_num = 1, }; static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = { -- 2.25.1

1 0

[PATCH OLK-6.6 249/602] io_uring/kbuf: Allow the full buffer id space for provided buffers
by pkwarcraft＠hotmail.com 05 Dec '23

05 Dec '23

From: Gabriel Krisman Bertazi <krisman(a)suse.de> stable inclusion from stable-v6.6.2 commit 464848643e999c964051600bc479527e2a25200e category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit f74c746e476b9dad51448b9a9421aae72b60e25f ] nbufs tracks the number of buffers and not the last bgid. In 16-bit, we have 2^16 valid buffers, but the check mistakenly rejects the last bid. Let's fix it to make the interface consistent with the documentation. Fixes: ddf0322db79c ("io_uring: add IORING_OP_PROVIDE_BUFFERS") Signed-off-by: Gabriel Krisman Bertazi <krisman(a)suse.de> Link: https://lore.kernel.org/r/20231005000531.30800-3-krisman@suse.de Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- io_uring/kbuf.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index 74a4f9600642..f6e5ae026e4b 100644 --- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -19,12 +19,15 @@ #define BGID_ARRAY 64 +/* BIDs are addressed by a 16-bit field in a CQE */ +#define MAX_BIDS_PER_BGID (1 << 16) + struct io_provide_buf { struct file *file; __u64 addr; __u32 len; __u32 bgid; - __u16 nbufs; + __u32 nbufs; __u16 bid; }; @@ -289,7 +292,7 @@ int io_remove_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) return -EINVAL; tmp = READ_ONCE(sqe->fd); - if (!tmp || tmp > USHRT_MAX) + if (!tmp || tmp > MAX_BIDS_PER_BGID) return -EINVAL; memset(p, 0, sizeof(*p)); @@ -332,7 +335,7 @@ int io_provide_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe return -EINVAL; tmp = READ_ONCE(sqe->fd); - if (!tmp || tmp > USHRT_MAX) + if (!tmp || tmp > MAX_BIDS_PER_BGID) return -E2BIG; p->nbufs = tmp; p->addr = READ_ONCE(sqe->addr); @@ -352,7 +355,7 @@ int io_provide_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe tmp = READ_ONCE(sqe->off); if (tmp > USHRT_MAX) return -E2BIG; - if (tmp + p->nbufs > USHRT_MAX) + if (tmp + p->nbufs > MAX_BIDS_PER_BGID) return -EINVAL; p->bid = tmp; return 0; -- 2.25.1

1 0

[PATCH OLK-6.6 248/602] io_uring/kbuf: Fix check of BID wrapping in provided buffers
by pkwarcraft＠hotmail.com 05 Dec '23

05 Dec '23

From: Gabriel Krisman Bertazi <krisman(a)suse.de> stable inclusion from stable-v6.6.2 commit de92bc45c00b0fdde5c261e91e67c38e2d045b07 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ab69838e7c75b0edb699c1a8f42752b30333c46f ] Commit 3851d25c75ed0 ("io_uring: check for rollover of buffer ID when providing buffers") introduced a check to prevent wrapping the BID counter when sqe->off is provided, but it's off-by-one too restrictive, rejecting the last possible BID (65534). i.e., the following fails with -EINVAL. io_uring_prep_provide_buffers(sqe, addr, size, 0xFFFF, 0, 0); Fixes: 3851d25c75ed ("io_uring: check for rollover of buffer ID when providing buffers") Signed-off-by: Gabriel Krisman Bertazi <krisman(a)suse.de> Link: https://lore.kernel.org/r/20231005000531.30800-2-krisman@suse.de Signed-off-by: Jens Axboe <axboe(a)kernel.dk> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- io_uring/kbuf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c index 9123138aa9f4..74a4f9600642 100644 --- a/io_uring/kbuf.c +++ b/io_uring/kbuf.c @@ -352,7 +352,7 @@ int io_provide_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe tmp = READ_ONCE(sqe->off); if (tmp > USHRT_MAX) return -E2BIG; - if (tmp + p->nbufs >= USHRT_MAX) + if (tmp + p->nbufs > USHRT_MAX) return -EINVAL; p->bid = tmp; return 0; -- 2.25.1

1 0

[PATCH OLK-6.6 247/602] drm/amd/display: Bail from dm_check_crtc_cursor if no relevant change
by pkwarcraft＠hotmail.com 05 Dec '23

05 Dec '23

From: Michel Dänzer <mdaenzer(a)redhat.com> stable inclusion from stable-v6.6.2 commit 89eea870d70b53166d667b318de715b2d57874c3 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit bc0b79ce2050aa523c38c96b6d26340a96bfbdca ] If no plane was newly enabled or changed scaling, there can be no new scaling mismatch with the cursor plane. By not pulling non-cursor plane states into all atomic commits while the cursor plane is enabled, this avoids synchronizing all cursor plane changes to vertical blank, which caused the following IGT tests to fail: kms_cursor_legacy(a)cursor-vs-flip.* kms_cursor_legacy(a)flip-vs-cursor.* Fixes: 003048ddf44b ("drm/amd/display: Check all enabled planes in dm_check_crtc_cursor") Signed-off-by: Michel Dänzer <mdaenzer(a)redhat.com> Signed-off-by: Hamza Mahfooz <hamza.mahfooz(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 33 ++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 70477a6b896a..34f011cedd06 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -9906,10 +9906,12 @@ static int dm_check_crtc_cursor(struct drm_atomic_state *state, struct drm_crtc *crtc, struct drm_crtc_state *new_crtc_state) { - struct drm_plane *cursor = crtc->cursor, *underlying; + struct drm_plane *cursor = crtc->cursor, *plane, *underlying; + struct drm_plane_state *old_plane_state, *new_plane_state; struct drm_plane_state *new_cursor_state, *new_underlying_state; int i; int cursor_scale_w, cursor_scale_h, underlying_scale_w, underlying_scale_h; + bool any_relevant_change = false; /* On DCE and DCN there is no dedicated hardware cursor plane. We get a * cursor per pipe but it's going to inherit the scaling and @@ -9917,6 +9919,35 @@ static int dm_check_crtc_cursor(struct drm_atomic_state *state, * blending properties match the underlying planes'. */ + /* If no plane was enabled or changed scaling, no need to check again */ + for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) { + int new_scale_w, new_scale_h, old_scale_w, old_scale_h; + + if (!new_plane_state || !new_plane_state->fb || new_plane_state->crtc != crtc) + continue; + + if (!old_plane_state || !old_plane_state->fb || old_plane_state->crtc != crtc) { + any_relevant_change = true; + break; + } + + if (new_plane_state->fb == old_plane_state->fb && + new_plane_state->crtc_w == old_plane_state->crtc_w && + new_plane_state->crtc_h == old_plane_state->crtc_h) + continue; + + dm_get_plane_scale(new_plane_state, &new_scale_w, &new_scale_h); + dm_get_plane_scale(old_plane_state, &old_scale_w, &old_scale_h); + + if (new_scale_w != old_scale_w || new_scale_h != old_scale_h) { + any_relevant_change = true; + break; + } + } + + if (!any_relevant_change) + return 0; + new_cursor_state = drm_atomic_get_plane_state(state, cursor); if (IS_ERR(new_cursor_state)) return PTR_ERR(new_cursor_state); -- 2.25.1

1 0

[PATCH OLK-6.6 246/602] drm/amd/display: Refactor dm_get_plane_scale helper
by pkwarcraft＠hotmail.com 05 Dec '23

05 Dec '23

From: Michel Dänzer <mdaenzer(a)redhat.com> stable inclusion from stable-v6.6.2 commit 0995fb3dd423a53fcf9807c4854e5921c7cf8855 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit ec4d770bbb155674c2497f255f4199bdc42287a9 ] Cleanup, no functional change intended. Signed-off-by: Michel Dänzer <mdaenzer(a)redhat.com> Signed-off-by: Hamza Mahfooz <hamza.mahfooz(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Stable-dep-of: bc0b79ce2050 ("drm/amd/display: Bail from dm_check_crtc_cursor if no relevant change") Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 23 +++++++++++-------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 342988f52d96..70477a6b896a 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -9891,6 +9891,17 @@ static void dm_get_oriented_plane_size(struct drm_plane_state *plane_state, } } +static void +dm_get_plane_scale(struct drm_plane_state *plane_state, + int *out_plane_scale_w, int *out_plane_scale_h) +{ + int plane_src_w, plane_src_h; + + dm_get_oriented_plane_size(plane_state, &plane_src_w, &plane_src_h); + *out_plane_scale_w = plane_state->crtc_w * 1000 / plane_src_w; + *out_plane_scale_h = plane_state->crtc_h * 1000 / plane_src_h; +} + static int dm_check_crtc_cursor(struct drm_atomic_state *state, struct drm_crtc *crtc, struct drm_crtc_state *new_crtc_state) @@ -9899,8 +9910,6 @@ static int dm_check_crtc_cursor(struct drm_atomic_state *state, struct drm_plane_state *new_cursor_state, *new_underlying_state; int i; int cursor_scale_w, cursor_scale_h, underlying_scale_w, underlying_scale_h; - int cursor_src_w, cursor_src_h; - int underlying_src_w, underlying_src_h; /* On DCE and DCN there is no dedicated hardware cursor plane. We get a * cursor per pipe but it's going to inherit the scaling and @@ -9915,9 +9924,7 @@ static int dm_check_crtc_cursor(struct drm_atomic_state *state, if (!new_cursor_state->fb) return 0; - dm_get_oriented_plane_size(new_cursor_state, &cursor_src_w, &cursor_src_h); - cursor_scale_w = new_cursor_state->crtc_w * 1000 / cursor_src_w; - cursor_scale_h = new_cursor_state->crtc_h * 1000 / cursor_src_h; + dm_get_plane_scale(new_cursor_state, &cursor_scale_w, &cursor_scale_h); /* Need to check all enabled planes, even if this commit doesn't change * their state @@ -9935,10 +9942,8 @@ static int dm_check_crtc_cursor(struct drm_atomic_state *state, if (!new_underlying_state->fb) continue; - dm_get_oriented_plane_size(new_underlying_state, - &underlying_src_w, &underlying_src_h); - underlying_scale_w = new_underlying_state->crtc_w * 1000 / underlying_src_w; - underlying_scale_h = new_underlying_state->crtc_h * 1000 / underlying_src_h; + dm_get_plane_scale(new_underlying_state, + &underlying_scale_w, &underlying_scale_h); if (cursor_scale_w != underlying_scale_w || cursor_scale_h != underlying_scale_h) { -- 2.25.1

1 0

[PATCH OLK-6.6 245/602] drm/amd/display: Check all enabled planes in dm_check_crtc_cursor
by pkwarcraft＠hotmail.com 05 Dec '23

05 Dec '23

From: Michel Dänzer <mdaenzer(a)redhat.com> stable inclusion from stable-v6.6.2 commit c9106fb186ffaed72f8b682cf383d56f113c9434 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 003048ddf44b1a6cfa57afa5a0cf40673e13f1ba ] It was only checking planes which had any state changes in the same commit. However, it also needs to check other enabled planes. Not doing this meant that a commit might spuriously "succeed", resulting in the cursor plane displaying with incorrect scaling. See https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3177#note_1824263 for an example. Fixes: d1bfbe8a3202 ("amd/display: check cursor plane matches underlying plane") Reviewed-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Michel Dänzer <mdaenzer(a)redhat.com> Signed-off-by: Hamza Mahfooz <hamza.mahfooz(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 4120ae9d1024..342988f52d96 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -9908,14 +9908,24 @@ static int dm_check_crtc_cursor(struct drm_atomic_state *state, * blending properties match the underlying planes'. */ - new_cursor_state = drm_atomic_get_new_plane_state(state, cursor); - if (!new_cursor_state || !new_cursor_state->fb) + new_cursor_state = drm_atomic_get_plane_state(state, cursor); + if (IS_ERR(new_cursor_state)) + return PTR_ERR(new_cursor_state); + + if (!new_cursor_state->fb) return 0; dm_get_oriented_plane_size(new_cursor_state, &cursor_src_w, &cursor_src_h); cursor_scale_w = new_cursor_state->crtc_w * 1000 / cursor_src_w; cursor_scale_h = new_cursor_state->crtc_h * 1000 / cursor_src_h; + /* Need to check all enabled planes, even if this commit doesn't change + * their state + */ + i = drm_atomic_add_affected_planes(state, crtc); + if (i) + return i; + for_each_new_plane_in_state_reverse(state, underlying, new_underlying_state, i) { /* Narrow down to non-cursor planes on the same CRTC as the cursor */ if (new_underlying_state->crtc != crtc || underlying == crtc->cursor) -- 2.25.1

1 0

[PATCH OLK-6.6 244/602] drm/amd/display: Fix null pointer dereference in error message
by pkwarcraft＠hotmail.com 05 Dec '23

05 Dec '23

From: Cong Liu <liucong2(a)kylinos.cn> stable inclusion from stable-v6.6.2 commit 8b72c5d4a5d25e76b16283397c40b8b3c0d70019 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 0c3601a2fbfb265ce283651480e30c8e60459112 ] This patch fixes a null pointer dereference in the error message that is printed when the Display Core (DC) fails to initialize. The original message includes the DC version number, which is undefined if the DC is not initialized. Fixes: 9788d087caff ("drm/amd/display: improve the message printed when loading DC") Signed-off-by: Cong Liu <liucong2(a)kylinos.cn> Reviewed-by: Harry Wentland <harry.wentland(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 868946dd7ef1..4120ae9d1024 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1692,8 +1692,7 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) DRM_INFO("Display Core v%s initialized on %s\n", DC_VER, dce_version_to_string(adev->dm.dc->ctx->dce_version)); } else { - DRM_INFO("Display Core v%s failed to initialize on %s\n", DC_VER, - dce_version_to_string(adev->dm.dc->ctx->dce_version)); + DRM_INFO("Display Core failed to initialize with v%s!\n", DC_VER); goto error; } -- 2.25.1

1 0

[PATCH OLK-6.6 243/602] drm/amdkfd: Handle errors from svm validate and map
by pkwarcraft＠hotmail.com 05 Dec '23

05 Dec '23

From: Philip Yang <Philip.Yang(a)amd.com> stable inclusion from stable-v6.6.2 commit 49ca8b9035ff43ce0673cc5d1b4e5c34451172b3 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit eb3c357bcb286e89386e89302061fe717fe4e562 ] If new range is splited to multiple pranges with max_svm_range_pages alignment and added to update_list, svm validate and map should keep going after error to make sure prange->mapped_to_gpu flag is up to date for the whole range. svm validate and map update set prange->mapped_to_gpu after mapping to GPUs successfully, otherwise clear prange->mapped_to_gpu flag (for update mapping case) instead of setting error flag, we can remove the redundant error flag to simpliy code. Refactor to remove goto and update prange->mapped_to_gpu flag inside svm_range_lock, to guarant we always evict queues or unmap from GPUs if there are invalid ranges. After svm validate and map return error -EAGIN, the caller retry will update the mapping for the whole range again. Fixes: c22b04407097 ("drm/amdkfd: flag added to handle errors from svm validate and map") Signed-off-by: Philip Yang <Philip.Yang(a)amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling(a)amd.com> Tested-by: James Zhu <james.zhu(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 82 +++++++++++++--------------- drivers/gpu/drm/amd/amdkfd/kfd_svm.h | 1 - 2 files changed, 39 insertions(+), 44 deletions(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index dfc11699e79a..2a42fbddcb7a 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -820,7 +820,7 @@ svm_range_is_same_attrs(struct kfd_process *p, struct svm_range *prange, } } - return !prange->is_error_flag; + return true; } /** @@ -1662,71 +1662,66 @@ static int svm_range_validate_and_map(struct mm_struct *mm, start = prange->start << PAGE_SHIFT; end = (prange->last + 1) << PAGE_SHIFT; - for (addr = start; addr < end && !r; ) { + for (addr = start; !r && addr < end; ) { struct hmm_range *hmm_range; struct vm_area_struct *vma; - unsigned long next; + unsigned long next = 0; unsigned long offset; unsigned long npages; bool readonly; vma = vma_lookup(mm, addr); - if (!vma) { + if (vma) { + readonly = !(vma->vm_flags & VM_WRITE); + + next = min(vma->vm_end, end); + npages = (next - addr) >> PAGE_SHIFT; + WRITE_ONCE(p->svms.faulting_task, current); + r = amdgpu_hmm_range_get_pages(&prange->notifier, addr, npages, + readonly, owner, NULL, + &hmm_range); + WRITE_ONCE(p->svms.faulting_task, NULL); + if (r) { + pr_debug("failed %d to get svm range pages\n", r); + if (r == -EBUSY) + r = -EAGAIN; + } + } else { r = -EFAULT; - goto unreserve_out; - } - readonly = !(vma->vm_flags & VM_WRITE); - - next = min(vma->vm_end, end); - npages = (next - addr) >> PAGE_SHIFT; - WRITE_ONCE(p->svms.faulting_task, current); - r = amdgpu_hmm_range_get_pages(&prange->notifier, addr, npages, - readonly, owner, NULL, - &hmm_range); - WRITE_ONCE(p->svms.faulting_task, NULL); - if (r) { - pr_debug("failed %d to get svm range pages\n", r); - if (r == -EBUSY) - r = -EAGAIN; - goto unreserve_out; } - offset = (addr - start) >> PAGE_SHIFT; - r = svm_range_dma_map(prange, ctx->bitmap, offset, npages, - hmm_range->hmm_pfns); - if (r) { - pr_debug("failed %d to dma map range\n", r); - goto unreserve_out; + if (!r) { + offset = (addr - start) >> PAGE_SHIFT; + r = svm_range_dma_map(prange, ctx->bitmap, offset, npages, + hmm_range->hmm_pfns); + if (r) + pr_debug("failed %d to dma map range\n", r); } svm_range_lock(prange); - if (amdgpu_hmm_range_get_pages_done(hmm_range)) { + if (!r && amdgpu_hmm_range_get_pages_done(hmm_range)) { pr_debug("hmm update the range, need validate again\n"); r = -EAGAIN; - goto unlock_out; } - if (!list_empty(&prange->child_list)) { + + if (!r && !list_empty(&prange->child_list)) { pr_debug("range split by unmap in parallel, validate again\n"); r = -EAGAIN; - goto unlock_out; } - r = svm_range_map_to_gpus(prange, offset, npages, readonly, - ctx->bitmap, wait, flush_tlb); + if (!r) + r = svm_range_map_to_gpus(prange, offset, npages, readonly, + ctx->bitmap, wait, flush_tlb); + + if (!r && next == end) + prange->mapped_to_gpu = true; -unlock_out: svm_range_unlock(prange); addr = next; } - if (addr == end) - prange->mapped_to_gpu = true; - -unreserve_out: svm_range_unreserve_bos(ctx); - - prange->is_error_flag = !!r; if (!r) prange->validate_timestamp = ktime_get_boottime(); @@ -2095,7 +2090,8 @@ svm_range_add(struct kfd_process *p, uint64_t start, uint64_t size, next = interval_tree_iter_next(node, start, last); next_start = min(node->last, last) + 1; - if (svm_range_is_same_attrs(p, prange, nattr, attrs)) { + if (svm_range_is_same_attrs(p, prange, nattr, attrs) && + prange->mapped_to_gpu) { /* nothing to do */ } else if (node->start < start || node->last > last) { /* node intersects the update range and its attributes @@ -3505,7 +3501,7 @@ svm_range_set_attr(struct kfd_process *p, struct mm_struct *mm, struct svm_range *next; bool update_mapping = false; bool flush_tlb; - int r = 0; + int r, ret = 0; pr_debug("pasid 0x%x svms 0x%p [0x%llx 0x%llx] pages 0x%llx\n", p->pasid, &p->svms, start, start + size - 1, size); @@ -3593,7 +3589,7 @@ svm_range_set_attr(struct kfd_process *p, struct mm_struct *mm, out_unlock_range: mutex_unlock(&prange->migrate_mutex); if (r) - break; + ret = r; } dynamic_svm_range_dump(svms); @@ -3606,7 +3602,7 @@ svm_range_set_attr(struct kfd_process *p, struct mm_struct *mm, pr_debug("pasid 0x%x svms 0x%p [0x%llx 0x%llx] done, r=%d\n", p->pasid, &p->svms, start, start + size - 1, r); - return r; + return ret ? ret : r; } static int diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h index c216c8dd13c6..25f711905738 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h @@ -133,7 +133,6 @@ struct svm_range { DECLARE_BITMAP(bitmap_access, MAX_GPU_INSTANCE); DECLARE_BITMAP(bitmap_aip, MAX_GPU_INSTANCE); bool mapped_to_gpu; - bool is_error_flag; }; static inline void svm_range_lock(struct svm_range *prange) -- 2.25.1

1 0

[PATCH OLK-6.6 242/602] drm/amdkfd: Remove svm range validated_once flag
by pkwarcraft＠hotmail.com 05 Dec '23

05 Dec '23

From: Philip Yang <Philip.Yang(a)amd.com> stable inclusion from stable-v6.6.2 commit 33b9170fef2b0fa31fb2a5dba922f95d512b4522 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit c99b16128082de519975aa147d9da3e40380de67 ] The validated_once flag is not used after the prefault was removed, The prefault was needed to ensure validate all system memory pages at least once before mapping or migrating the range to GPU. Signed-off-by: Philip Yang <Philip.Yang(a)amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Stable-dep-of: eb3c357bcb28 ("drm/amdkfd: Handle errors from svm validate and map") Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 4 +--- drivers/gpu/drm/amd/amdkfd/kfd_svm.h | 1 - 2 files changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c index bb65a9943980..dfc11699e79a 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c @@ -1720,10 +1720,8 @@ static int svm_range_validate_and_map(struct mm_struct *mm, addr = next; } - if (addr == end) { - prange->validated_once = true; + if (addr == end) prange->mapped_to_gpu = true; - } unreserve_out: svm_range_unreserve_bos(ctx); diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h index 9e668eeefb32..c216c8dd13c6 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h @@ -132,7 +132,6 @@ struct svm_range { struct list_head child_list; DECLARE_BITMAP(bitmap_access, MAX_GPU_INSTANCE); DECLARE_BITMAP(bitmap_aip, MAX_GPU_INSTANCE); - bool validated_once; bool mapped_to_gpu; bool is_error_flag; }; -- 2.25.1

1 0