arm64: hyp: initialize vttbr_el2 to zero · 7dbfbe5b2f - Gogs

arm64: hyp: initialize vttbr_el2 to zero

The architecture doesn't mandate any reset value for vttbr_el2.
Better set it to a known value before some HYP code gets confused.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

Marc Zyngier 12 years ago

parent

712c6ff4db

commit

7dbfbe5b2f

1 changed files with 3 additions and 0 deletions

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arch/arm64/kernel/head.S
							 
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				@@ -185,6 +185,9 @@ ENTRY(el2_setup)
			
				 	msr	hstr_el2, xzr			// Disable CP15 traps to EL2
			
				 #endif
			
				+	/* Stage-2 translation */
			
				+	msr	vttbr_el2, xzr
			
				+
			
				 	/* Hypervisor stub */
			
				 	adr	x0, __hyp_stub_vectors
			
				 	msr	vbar_el2, x0