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| author | Paul Walmsley <pjw@kernel.org> | 2026-01-25 21:09:55 -0700 |
|---|---|---|
| committer | Paul Walmsley <pjw@kernel.org> | 2026-01-29 02:38:40 -0700 |
| commit | 462a94fb8ae8ba0d4d3901c7283b4af052ab8804 (patch) | |
| tree | 7b5a479f32e1d8e3ad20f369517f91d3980fe838 /Documentation | |
| parent | 2af7c9cf021c5dabe880b68e5cc22c618060d954 (diff) | |
riscv: hwprobe: add support for RISCV_HWPROBE_KEY_IMA_EXT_1
We've run out of bits to describe RISC-V ISA extensions in our initial
hwprobe key, RISCV_HWPROBE_KEY_IMA_EXT_0. So, let's add
RISCV_HWPROBE_KEY_IMA_EXT_1, along with the framework to set the
appropriate hwprobe tuple, and add testing for it.
Based on a suggestion from Andrew Jones <andrew.jones@oss.qualcomm.com>,
also fix the documentation for RISCV_HWPROBE_KEY_IMA_EXT_0.
Reviewed-by: Andrew Jones <andrew.jones@oss.qualcomm.com>
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/arch/riscv/hwprobe.rst | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst index 641ec4abb906..c420a8349bc6 100644 --- a/Documentation/arch/riscv/hwprobe.rst +++ b/Documentation/arch/riscv/hwprobe.rst @@ -67,7 +67,7 @@ The following keys are defined: programs (it may still be executed in userspace via a kernel-controlled mechanism such as the vDSO). -* :c:macro:`RISCV_HWPROBE_KEY_IMA_EXT_0`: A bitmask containing the extensions +* :c:macro:`RISCV_HWPROBE_KEY_IMA_EXT_0`: A bitmask containing extensions that are compatible with the :c:macro:`RISCV_HWPROBE_BASE_BEHAVIOR_IMA`: base system behavior. @@ -387,3 +387,7 @@ The following keys are defined: * :c:macro:`RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE`: An unsigned int which represents the size of the Zicbop block in bytes. + +* :c:macro:`RISCV_HWPROBE_KEY_IMA_EXT_1`: A bitmask containing additional + extensions that are compatible with the + :c:macro:`RISCV_HWPROBE_BASE_BEHAVIOR_IMA`: base system behavior. |