The RISC-V Pointer Masking specification defines three extensions:
Smmpm, Smnpm, and Ssnpm. Add support for parsing each of them.
Smmpm implies the existence of the mseccfg CSR. As it is the only user
of this CSR so far, there is no need for an Xlinuxmseccfg extension.
Signed-off-by: Samuel Holland <samuel.holland@xxxxxxxxxx>
---
arch/riscv/include/asm/hwcap.h | 5 +++++
arch/riscv/kernel/cpufeature.c | 3 +++
2 files changed, 8 insertions(+)
diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
index 1f2d2599c655..1a21dfc47f08 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -80,6 +80,9 @@
#define RISCV_ISA_EXT_ZFA 71
#define RISCV_ISA_EXT_ZTSO 72
#define RISCV_ISA_EXT_ZACAS 73
+#define RISCV_ISA_EXT_SMMPM 74
+#define RISCV_ISA_EXT_SMNPM 75
+#define RISCV_ISA_EXT_SSNPM 76
#define RISCV_ISA_EXT_XLINUXENVCFG 127
@@ -88,8 +91,10 @@
#ifdef CONFIG_RISCV_M_MODE
#define RISCV_ISA_EXT_SxAIA RISCV_ISA_EXT_SMAIA
+#define RISCV_ISA_EXT_SxNPM RISCV_ISA_EXT_SMNPM
#else
#define RISCV_ISA_EXT_SxAIA RISCV_ISA_EXT_SSAIA
+#define RISCV_ISA_EXT_SxNPM RISCV_ISA_EXT_SSNPM
#endif
#endif /* _ASM_RISCV_HWCAP_H */
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 79a5a35fab96..d1846aab1f78 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -311,9 +311,12 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
__RISCV_ISA_EXT_BUNDLE(zvksg, riscv_zvksg_bundled_exts),
__RISCV_ISA_EXT_DATA(zvkt, RISCV_ISA_EXT_ZVKT),
__RISCV_ISA_EXT_DATA(smaia, RISCV_ISA_EXT_SMAIA),
+ __RISCV_ISA_EXT_DATA(smmpm, RISCV_ISA_EXT_SMMPM),
+ __RISCV_ISA_EXT_SUPERSET(smnpm, RISCV_ISA_EXT_SMNPM, riscv_xlinuxenvcfg_exts),
__RISCV_ISA_EXT_DATA(smstateen, RISCV_ISA_EXT_SMSTATEEN),
__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(sstc, RISCV_ISA_EXT_SSTC),
__RISCV_ISA_EXT_DATA(svinval, RISCV_ISA_EXT_SVINVAL),
__RISCV_ISA_EXT_DATA(svnapot, RISCV_ISA_EXT_SVNAPOT),
--
2.43.1
