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[v3,07/23] kvm: arm64: Initialize MAIR_EL2 using a constant

Message ID 20201126155421.14901-8-dbrazdil@google.com (mailing list archive)
State New, archived
Headers show
Series Opt-in always-on nVHE hypervisor | expand

Commit Message

David Brazdil Nov. 26, 2020, 3:54 p.m. UTC 
MAIR_EL2 is currently initialized to the value of MAIR_EL1, which itself
is set to a constant MAIR_ELx_SET.

Initialize MAIR_EL2 to MAIR_ELx_SET directly in preparation for allowing
KVM to start CPU cores itself before ERETing to EL1. In that case,
MAIR_EL2 will be initialized before MAIR_EL1.

Signed-off-by: David Brazdil <dbrazdil@google.com>
---
 arch/arm64/kvm/hyp/nvhe/hyp-init.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-init.S b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
index b11a9d7db677..17b58dbc3a2f 100644
--- a/arch/arm64/kvm/hyp/nvhe/hyp-init.S
+++ b/arch/arm64/kvm/hyp/nvhe/hyp-init.S
@@ -111,7 +111,7 @@  alternative_else_nop_endif
 
 	msr	tcr_el2, x0
 
-	mrs	x0, mair_el1
+	mov_q	x0, MAIR_ELx_SET
 	msr	mair_el2, x0
 	isb