From: Marc Zyngier <Marc.Zyngier@arm.com>
Date: Tue, 5 Nov 2013 18:29:45 +0000 (+0000)
Subject: arm64: KVM: initialize HYP mode following the kernel endianness
X-Git-Tag: firefly_0821_release~3680^2~36^2~16^2^2~186
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=60979ebbbbe9d4c56e87cffcaa92933d96637d7b;p=firefly-linux-kernel-4.4.55.git

arm64: KVM: initialize HYP mode following the kernel endianness

Force SCTLR_EL2.EE to 1 if the kernel is compiled as BE.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 18ea3dbc9e5c8a53a361b17c4a5676ea6f4bcb72)
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---

diff --git a/arch/arm64/kvm/hyp-init.S b/arch/arm64/kvm/hyp-init.S
index ba84e6705e20..2b0244d65c16 100644
--- a/arch/arm64/kvm/hyp-init.S
+++ b/arch/arm64/kvm/hyp-init.S
@@ -74,7 +74,10 @@ __do_hyp_init:
 	msr	mair_el2, x4
 	isb
 
-	mov	x4, #SCTLR_EL2_FLAGS
+	mrs	x4, sctlr_el2
+	and	x4, x4, #SCTLR_EL2_EE	// preserve endianness of EL2
+	ldr	x5, =SCTLR_EL2_FLAGS
+	orr	x4, x4, x5
 	msr	sctlr_el2, x4
 	isb