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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /Documentation/PCI/endpoint/function | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'Documentation/PCI/endpoint/function')
| -rw-r--r-- | Documentation/PCI/endpoint/function/binding/pci-ntb.rst | 38 | ||||
| -rw-r--r-- | Documentation/PCI/endpoint/function/binding/pci-test.rst | 26 |
2 files changed, 64 insertions, 0 deletions
diff --git a/Documentation/PCI/endpoint/function/binding/pci-ntb.rst b/Documentation/PCI/endpoint/function/binding/pci-ntb.rst new file mode 100644 index 000000000..40253d3d5 --- /dev/null +++ b/Documentation/PCI/endpoint/function/binding/pci-ntb.rst @@ -0,0 +1,38 @@ +.. SPDX-License-Identifier: GPL-2.0 + +========================== +PCI NTB Endpoint Function +========================== + +1) Create a subdirectory to pci_epf_ntb directory in configfs. + +Standard EPF Configurable Fields: + +================ =========================================================== +vendorid should be 0x104c +deviceid should be 0xb00d for TI's J721E SoC +revid don't care +progif_code don't care +subclass_code should be 0x00 +baseclass_code should be 0x5 +cache_line_size don't care +subsys_vendor_id don't care +subsys_id don't care +interrupt_pin don't care +msi_interrupts don't care +msix_interrupts don't care +================ =========================================================== + +2) Create a subdirectory to directory created in 1 + +NTB EPF specific configurable fields: + +================ =========================================================== +db_count Number of doorbells; default = 4 +mw1 size of memory window1 +mw2 size of memory window2 +mw3 size of memory window3 +mw4 size of memory window4 +num_mws Number of memory windows; max = 4 +spad_count Number of scratchpad registers; default = 64 +================ =========================================================== diff --git a/Documentation/PCI/endpoint/function/binding/pci-test.rst b/Documentation/PCI/endpoint/function/binding/pci-test.rst new file mode 100644 index 000000000..57ee866fb --- /dev/null +++ b/Documentation/PCI/endpoint/function/binding/pci-test.rst @@ -0,0 +1,26 @@ +.. SPDX-License-Identifier: GPL-2.0 + +========================== +PCI Test Endpoint Function +========================== + +name: Should be "pci_epf_test" to bind to the pci_epf_test driver. + +Configurable Fields: + +================ =========================================================== +vendorid should be 0x104c +deviceid should be 0xb500 for DRA74x and 0xb501 for DRA72x +revid don't care +progif_code don't care +subclass_code don't care +baseclass_code should be 0xff +cache_line_size don't care +subsys_vendor_id don't care +subsys_id don't care +interrupt_pin Should be 1 - INTA, 2 - INTB, 3 - INTC, 4 -INTD +msi_interrupts Should be 1 to 32 depending on the number of MSI interrupts + to test +msix_interrupts Should be 1 to 2048 depending on the number of MSI-X + interrupts to test +================ =========================================================== |