Re: [PATCH v4 5/7] riscv: hwprobe: Document MIPS xmipsexectl vendor extension

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On 6/25/25 16:21, Aleksa Paunovic via B4 Relay wrote:
From: Aleksa Paunovic <aleksa.paunovic@xxxxxxxxxxxxx>

Document support for MIPS vendor extensions using the key
"RISCV_HWPROBE_KEY_VENDOR_EXT_MIPS_0" and xmipsexectl vendor extension
using the key "RISCV_HWPROBE_VENDOR_EXT_XMIPSEXECTL".

Signed-off-by: Aleksa Paunovic <aleksa.paunovic@xxxxxxxxxxxxx>
---
  Documentation/arch/riscv/hwprobe.rst | 9 +++++++++
  1 file changed, 9 insertions(+)

diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
index 2aa9be272d5de1c15559a978a956bc36c34de81c..2f449c9b15bdd6b9813c9a968deca1a4c4ff9b14 100644
--- a/Documentation/arch/riscv/hwprobe.rst
+++ b/Documentation/arch/riscv/hwprobe.rst
@@ -327,6 +327,15 @@ The following keys are defined:
    * :c:macro:`RISCV_HWPROBE_MISALIGNED_VECTOR_UNSUPPORTED`: Misaligned vector accesses are
      not supported at all and will generate a misaligned address fault.
+* :c:macro:`RISCV_HWPROBE_KEY_VENDOR_EXT_MIPS_0`: A bitmask containing the
+  mips vendor extensions that are compatible with the
+  :c:macro:`RISCV_HWPROBE_BASE_BEHAVIOR_IMA`: base system behavior.
+
+  * MIPS
+
+    * :c:macro:`RISCV_HWPROBE_VENDOR_EXT_XMIPSEXECTL`: The xmipsexectl vendor
+        extension is supported in the MIPS ISA extensions spec.
+
  * :c:macro:`RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0`: A bitmask containing the
    thead vendor extensions that are compatible with the
    :c:macro:`RISCV_HWPROBE_BASE_BEHAVIOR_IMA`: base system behavior.


FWIW, just a note that in the documentation you mentioned in patch 1, xmipsexectl extension also provides 2 barrier instructions that are not implemented in this patchset.

Anyway:

Reviewed-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>

Thanks,

Alex





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