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arm64: Move VHE-specific SPE setup to mutate_to_vhe() 

There isn't much that a VHE kernel needs on top of whatever has
been done for nVHE, so let's move the little we need to the
VHE stub (the SPE setup), and drop the init_el2_state macro.

No expected functional change.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: David Brazdil <dbrazdil@google.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210208095732.3267263-8-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Marc Zyngier 2021-02-08 09:57:16 +00:00 committed by Will Deacon
parent c6f8c92f3f
commit 19e87e1319
1 changed files with 5 additions and 3 deletions
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8
arch/arm64/kernel/hyp-stub.S
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@ -92,9 +92,6 @@ SYM_CODE_START_LOCAL(mutate_to_vhe)
msr hcr_el2, x0
isb
// Doesn't do much on VHE, but still, worth a shot
init_el2_state vhe
// Use the EL1 allocated stack, per-cpu offset
mrs x0, sp_el1
mov sp, x0
@ -107,6 +104,11 @@ SYM_CODE_START_LOCAL(mutate_to_vhe)
mrs_s x0, SYS_VBAR_EL12
msr vbar_el1, x0
// Use EL2 translations for SPE and disable access from EL1
mrs x0, mdcr_el2
bic x0, x0, #(MDCR_EL2_E2PB_MASK << MDCR_EL2_E2PB_SHIFT)
msr mdcr_el2, x0
// Transfer the MM state from EL1 to EL2
mrs_s x0, SYS_TCR_EL12
msr tcr_el1, x0