arm64: Allow sticky E2H when entering EL1

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For CPUs that have the unfortunate mis-feature to be stuck in
VHE mode, we perform a funny dance where we completely shortcut
the normal boot process to enable VHE and run the kernel at EL2,
and only then start booting the kernel.

Not only this is pretty ugly, but it means that the EL2 finalisation
occurs before we have processed the sysreg override.

Instead, start executing the kernel as if it was an EL1 guest and
rely on the normal EL2 finalisation to go back to EL2.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220630160500.1536744-4-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

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Marc Zyngier 2022-06-30 17:04:54 +01:00 • committed by Will Deacon

parent b65e411d6c

commit ae4b7e38e9

1 changed files with 10 additions and 24 deletions

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arch/arm64/kernel/head.S

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