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| author |   Marc Zyngier <maz@kernel.org> | 2021-02-08 09:57:23 +0000 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2021-02-09 13:50:56 +0000 |
| commit | 361db0fca7affafa920f7d91bf93b9d9da44712f (patch) | |
| tree | 4b2d1e5917bb049bdbec7c811681a415f4dfba57 /arch/arm64/include/asm/cpufeature.h | |
| parent | arm64: cpufeature: Add an early command-line cpufeature override facility (diff) | |
| download | linux-dev-361db0fca7affafa920f7d91bf93b9d9da44712f.tar.xz linux-dev-361db0fca7affafa920f7d91bf93b9d9da44712f.zip | |
arm64: Allow ID_AA64MMFR1_EL1.VH to be overridden from the command line
As we want to be able to disable VHE at runtime, let's match
"id_aa64mmfr1.vh=" from the command line as an override.
This doesn't have much effect yet as our boot code doesn't look
at the cpufeature, but only at the HW registers.
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: David Brazdil <dbrazdil@google.com>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210208095732.3267263-15-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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h index b5bf7af68691..570f1b4ba3cc 100644 --- a/arch/arm64/include/asm/cpufeature.h +++ b/arch/arm64/include/asm/cpufeature.h @@ -818,6 +818,8 @@ static inline unsigned int get_vmid_bits(u64 mmfr1) return 8; } +extern struct arm64_ftr_override id_aa64mmfr1_override; + u32 get_kvm_ipa_limit(void); void dump_cpu_features(void); |