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authorClément Léger <cleger@rivosinc.com>2023-12-20 18:57:21 +0300
committerPalmer Dabbelt <palmer@rivosinc.com>2024-01-10 07:12:29 +0300
commit154a3706122978eeb34d8223d49285ed4f3c61fa (patch)
tree00a1fb20960c5ac54437997b4375c2afb2b0dc6a /Documentation
parent188a2122c8274b64a739544b1bcfd30e30aed5dd (diff)
downloadlinux-154a3706122978eeb34d8223d49285ed4f3c61fa.tar.xz
riscv: hwprobe: export Zacas ISA extension
Export Zacas ISA extension through hwprobe. Signed-off-by: Clément Léger <cleger@rivosinc.com> Link: https://lore.kernel.org/r/20231220155723.684081-6-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/arch/riscv/hwprobe.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
index 10bd7b170118..bff68004ad43 100644
--- a/Documentation/arch/riscv/hwprobe.rst
+++ b/Documentation/arch/riscv/hwprobe.rst
@@ -165,6 +165,10 @@ The following keys are defined:
defined in the RISC-V ISA manual starting from commit 5618fb5a216b
("Ztso is now ratified.")
+ * :c:macro:`RISCV_HWPROBE_EXT_ZACAS`: The Zacas extension is supported as
+ defined in the Atomic Compare-and-Swap (CAS) instructions manual starting
+ from commit 5059e0ca641c ("update to ratified").
+
* :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: A bitmask that contains performance
information about the selected set of processors.