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| author | Marc Zyngier <maz@kernel.org> | 2022-06-30 17:04:58 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-07-01 15:22:52 +0100 |
| commit | b3000e2133d878e586416e440642ca82d234c6fb (patch) | |
| tree | bb778e096fe862d356c0df3c5ce27933098e4913 /arch/arm64/include/asm/cpufeature.h | |
| parent | 6ab7661e1d3930edc8462099f047ca2cfdbd343a (diff) | |
| download | linux-b3000e2133d878e586416e440642ca82d234c6fb.tar.bz2 | |
arm64: Add the arm64.nosme command line option
In order to be able to completely disable SME even if the HW
seems to support it (most likely because the FW is broken),
move the SME setup into the EL2 finalisation block, and
use a new idreg override to deal with it.
Note that we also nuke id_aa64smfr0_el1 as a byproduct.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220630160500.1536744-8-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/cpufeature.h')
| -rw-r--r-- | arch/arm64/include/asm/cpufeature.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index 14a8f3d93add..5adda12b1946 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -909,6 +909,7 @@ static inline unsigned int get_vmid_bits(u64 mmfr1) extern struct arm64_ftr_override id_aa64mmfr1_override; extern struct arm64_ftr_override id_aa64pfr1_override; +extern struct arm64_ftr_override id_aa64smfr0_override; extern struct arm64_ftr_override id_aa64isar1_override; extern struct arm64_ftr_override id_aa64isar2_override; |