[PATCH RFC 02/19] RISC-V: Detect the Ssqosid extension
Drew Fustini
fustini at kernel.org
Mon Jan 19 20:14:39 PST 2026
Ssqosid is the RISC-V Quality-of-Service (QoS) Identifiers specification
which defines the Supervisor Resource Management Configuration (srmcfg)
register.
Link: https://github.com/riscv/riscv-ssqosid/releases/tag/v1.0
Signed-off-by: Kornel Dulęba <mindal at semihalf.com>
[fustini: rebase on riscv/for-next]
Signed-off-by: Drew Fustini <fustini at kernel.org>
---
arch/riscv/include/asm/hwcap.h | 1 +
arch/riscv/kernel/cpufeature.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
index 4369a2338541..28dff8233b34 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -110,6 +110,7 @@
#define RISCV_ISA_EXT_ZALASR 101
#define RISCV_ISA_EXT_ZILSD 102
#define RISCV_ISA_EXT_ZCLSD 103
+#define RISCV_ISA_EXT_SSQOSID 104
#define RISCV_ISA_EXT_XLINUXENVCFG 127
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index c05b11596c19..bf704b48679c 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -558,6 +558,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
__RISCV_ISA_EXT_DATA(ssaia, RISCV_ISA_EXT_SSAIA),
__RISCV_ISA_EXT_DATA(sscofpmf, RISCV_ISA_EXT_SSCOFPMF),
__RISCV_ISA_EXT_SUPERSET(ssnpm, RISCV_ISA_EXT_SSNPM, riscv_xlinuxenvcfg_exts),
+ __RISCV_ISA_EXT_DATA(ssqosid, RISCV_ISA_EXT_SSQOSID),
__RISCV_ISA_EXT_DATA(sstc, RISCV_ISA_EXT_SSTC),
__RISCV_ISA_EXT_DATA(svade, RISCV_ISA_EXT_SVADE),
__RISCV_ISA_EXT_DATA_VALIDATE(svadu, RISCV_ISA_EXT_SVADU, riscv_ext_svadu_validate),
--
2.43.0
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