KVM: arm64: Shave a few bytes from the EL2 idmap code

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Our idmap is becoming too big, to the point where it doesn't fit in
a 4kB page anymore.

There are some low-hanging fruits though, such as the el2_init_state
horror that is expanded 3 times in the kernel. Let's at least limit
ourselves to two copies, which makes the kernel link again.

At some point, we'll have to have a better way of doing this.

Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20241009204903.GA3353168@thelio-3990X

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This commit is contained in:

Marc Zyngier 2024-10-10 16:13:26 +01:00

parent df5fd75ee3

commit afa9b48f32

3 changed files with 31 additions and 23 deletions

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1

arch/arm64/include/asm/kvm_asm.h

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arch/arm64/kernel/asm-offsets.c

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52

arch/arm64/kvm/hyp/nvhe/hyp-init.S

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