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KVM: arm64: Enable Address Authentication at EL2 if available
While initializing EL2, enable Address Authentication if detected from EL1. We still use the EL1-provided keys though. Acked-by: Andrew Scull <ascull@google.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org>
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@ -104,6 +104,11 @@ alternative_else_nop_endif
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*/
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mov_q x4, (SCTLR_EL2_RES1 | (SCTLR_ELx_FLAGS & ~SCTLR_ELx_A))
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CPU_BE( orr x4, x4, #SCTLR_ELx_EE)
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alternative_if ARM64_HAS_ADDRESS_AUTH
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mov_q x5, (SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | \
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SCTLR_ELx_ENDA | SCTLR_ELx_ENDB)
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orr x4, x4, x5
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alternative_else_nop_endif
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msr sctlr_el2, x4
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isb
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