This is the next version of the shmem backed GEM objects series
originally from Asahi, previously posted by Daniel Almeida.
The previous version of the patch series can be found here:
https://patchwork.freedesktop.org/series/156093/
This patch series may be applied on top of the
driver-core/driver-core-testing branch:
https://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core.git…
Changelogs are per-patch
Asahi Lina (2):
rust: helpers: Add bindings/wrappers for dma_resv_lock
rust: drm: gem: shmem: Add DRM shmem helper abstraction
Lyude Paul (5):
rust: drm: Add gem::impl_aref_for_gem_obj!
rust: drm: gem: Add raw_dma_resv() function
rust: gem: Introduce DriverObject::Args
rust: drm: gem: Introduce shmem::SGTable
rust: drm/gem: Add vmap functions to shmem bindings
drivers/gpu/drm/nova/gem.rs | 5 +-
drivers/gpu/drm/tyr/gem.rs | 3 +-
rust/bindings/bindings_helper.h | 3 +
rust/helpers/dma-resv.c | 13 +
rust/helpers/drm.c | 56 ++-
rust/helpers/helpers.c | 1 +
rust/kernel/drm/gem/mod.rs | 79 +++-
rust/kernel/drm/gem/shmem.rs | 654 ++++++++++++++++++++++++++++++++
8 files changed, 792 insertions(+), 22 deletions(-)
create mode 100644 rust/helpers/dma-resv.c
create mode 100644 rust/kernel/drm/gem/shmem.rs
base-commit: dc33ae50d32b509af5ae61030912fa20c79ef112
prerequisite-patch-id: c631986f96e2073263e97e82a65b96fc5ada6924
prerequisite-patch-id: ae853e8eb8d58c77881371960be4ae92755e83c6
prerequisite-patch-id: 0ab78b50648c7d8f66b83c32ed2af0ec3ede42a3
prerequisite-patch-id: 636ec7f913f4047e5e1a1788f3e835b7259698c2
prerequisite-patch-id: d75e4d7140eadeeed8017af8cd093bfd2766ee8e
prerequisite-patch-id: 67a8010c1bc95bca1d2cf6b246c67bc79d24e766
--
2.53.0
dma_fence_chain_find_seqno() uses dma_fence_chain_for_each() to walk a
given dma_fence_chain. dma_fence_chain_for_each() always holds a
reference for the current fence during iteration. The reference must
be dropped after breaking out. Instead of dereferencing the last fence
as intended, dma_fence_chain_find_seqno() incorrectly dereferences the
first fence in the chain.
Fixes: 7bf60c52e093 ("dma-buf: add new dma_fence_chain container v7")
Signed-off-by: Li Ming <ming.li(a)zohomail.com>
---
drivers/dma-buf/dma-fence-chain.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma-buf/dma-fence-chain.c b/drivers/dma-buf/dma-fence-chain.c
index a8a90acf4f34..71fa173aef13 100644
--- a/drivers/dma-buf/dma-fence-chain.c
+++ b/drivers/dma-buf/dma-fence-chain.c
@@ -103,7 +103,7 @@ int dma_fence_chain_find_seqno(struct dma_fence **pfence, uint64_t seqno)
to_dma_fence_chain(*pfence)->prev_seqno < seqno)
break;
}
- dma_fence_put(&chain->base);
+ dma_fence_put(*pfence);
return 0;
}
---
base-commit: c369299895a591d96745d6492d4888259b004a9e
change-id: 20260327-fix_dma_fence_chain_find_seqno-7adea64efe01
Best regards,
--
Li Ming <ming.li(a)zohomail.com>
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dma_fence_chain_find_seqno() uses dma_fence_chain_for_each() to walk a
given dma_fence_chain. dma_fence_chain_for_each() always holds a
reference for the current fence during iteration. The reference must
be dropped after breaking out. Instead of dereferencing the last fence
as intended, dma_fence_chain_find_seqno() incorrectly dereferences the
first fence in the chain.
Fixes: 7bf60c52e093 ("dma-buf: add new dma_fence_chain container v7")
Signed-off-by: Li Ming <ming.li(a)zohomail.com>
---
drivers/dma-buf/dma-fence-chain.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma-buf/dma-fence-chain.c b/drivers/dma-buf/dma-fence-chain.c
index a8a90acf4f34..71fa173aef13 100644
--- a/drivers/dma-buf/dma-fence-chain.c
+++ b/drivers/dma-buf/dma-fence-chain.c
@@ -103,7 +103,7 @@ int dma_fence_chain_find_seqno(struct dma_fence **pfence, uint64_t seqno)
to_dma_fence_chain(*pfence)->prev_seqno < seqno)
break;
}
- dma_fence_put(&chain->base);
+ dma_fence_put(*pfence);
return 0;
}
---
base-commit: c369299895a591d96745d6492d4888259b004a9e
change-id: 20260327-fix_dma_fence_chain_find_seqno-7adea64efe01
Best regards,
--
Li Ming <ming.li(a)zohomail.com>
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