arm64: Make kvm-arm.mode={nvhe, protected} an alias of id_aa64mmfr1.vh=0

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Admitedly, passing id_aa64mmfr1.vh=0 on the command-line isn't
that easy to understand, and it is likely that users would much
prefer write "kvm-arm.mode=nvhe", or "...=protected".

So here you go. This has the added advantage that we can now
always honor the "kvm-arm.mode=protected" option, even when
booting on a VHE system.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: David Brazdil <dbrazdil@google.com>
Link: https://lore.kernel.org/r/20210208095732.3267263-18-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

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Marc Zyngier 2021-02-08 09:57:26 +00:00 • committed by Will Deacon

parent 863ace77e9

commit 1945a067f3

3 changed files with 8 additions and 0 deletions

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3

Documentation/admin-guide/kernel-parameters.txt

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2

arch/arm64/kernel/idreg-override.c

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arch/arm64/kvm/arm.c

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