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| author | Clément Léger <cleger@rivosinc.com> | 2025-05-27 12:00:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-29 14:10:17 +0100 |
| commit | b8759add751d0c70b51bfd20b91d407aac842544 (patch) | |
| tree | eb678d30746984017e2df902ef470958fef4f1ad /arch | |
| parent | 4305480542c4ef08d3ded3ee12efab777e3c0ec5 (diff) | |
| download | linux-b8759add751d0c70b51bfd20b91d407aac842544.tar.gz linux-b8759add751d0c70b51bfd20b91d407aac842544.tar.bz2 linux-b8759add751d0c70b51bfd20b91d407aac842544.zip | |
riscv: cpufeature: add validation for zfa, zfh and zfhmin
[ Upstream commit 2e2cf5581fccc562f7faf174ffb9866fed5cafbd ]
These extensions depends on the F one. Add a validation callback
checking for the F extension to be present. Now that extensions are
correctly reported using the F/D presence, we can remove the
has_fpu() check in hwprobe_isa_ext0().
Signed-off-by: Clément Léger <cleger@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250527100001.33284-1-cleger@rivosinc.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/kernel/cpufeature.c | 6 | ||||
| -rw-r--r-- | arch/riscv/kernel/sys_hwprobe.c | 14 |
2 files changed, 9 insertions, 11 deletions
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 743d53415572..67b59699357d 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -474,10 +474,10 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = { __RISCV_ISA_EXT_DATA(zacas, RISCV_ISA_EXT_ZACAS), __RISCV_ISA_EXT_DATA(zalrsc, RISCV_ISA_EXT_ZALRSC), __RISCV_ISA_EXT_DATA(zawrs, RISCV_ISA_EXT_ZAWRS), - __RISCV_ISA_EXT_DATA(zfa, RISCV_ISA_EXT_ZFA), + __RISCV_ISA_EXT_DATA_VALIDATE(zfa, RISCV_ISA_EXT_ZFA, riscv_ext_f_depends), __RISCV_ISA_EXT_DATA_VALIDATE(zfbfmin, RISCV_ISA_EXT_ZFBFMIN, riscv_ext_f_depends), - __RISCV_ISA_EXT_DATA(zfh, RISCV_ISA_EXT_ZFH), - __RISCV_ISA_EXT_DATA(zfhmin, RISCV_ISA_EXT_ZFHMIN), + __RISCV_ISA_EXT_DATA_VALIDATE(zfh, RISCV_ISA_EXT_ZFH, riscv_ext_f_depends), + __RISCV_ISA_EXT_DATA_VALIDATE(zfhmin, RISCV_ISA_EXT_ZFHMIN, riscv_ext_f_depends), __RISCV_ISA_EXT_DATA(zca, RISCV_ISA_EXT_ZCA), __RISCV_ISA_EXT_DATA_VALIDATE(zcb, RISCV_ISA_EXT_ZCB, riscv_ext_zca_depends), __RISCV_ISA_EXT_DATA_VALIDATE(zcd, RISCV_ISA_EXT_ZCD, riscv_ext_zcd_validate), diff --git a/arch/riscv/kernel/sys_hwprobe.c b/arch/riscv/kernel/sys_hwprobe.c index 0b170e18a2be..3e9259790816 100644 --- a/arch/riscv/kernel/sys_hwprobe.c +++ b/arch/riscv/kernel/sys_hwprobe.c @@ -153,14 +153,12 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair, EXT_KEY(ZVKT); } - if (has_fpu()) { - EXT_KEY(ZCD); - EXT_KEY(ZCF); - EXT_KEY(ZFA); - EXT_KEY(ZFBFMIN); - EXT_KEY(ZFH); - EXT_KEY(ZFHMIN); - } + EXT_KEY(ZCD); + EXT_KEY(ZCF); + EXT_KEY(ZFA); + EXT_KEY(ZFBFMIN); + EXT_KEY(ZFH); + EXT_KEY(ZFHMIN); if (IS_ENABLED(CONFIG_RISCV_ISA_SUPM)) EXT_KEY(SUPM); |