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arm64: hyp: initialize vttbr_el2 to zero

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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>
This commit is contained in:
Marc Zyngier 2012-11-06 19:27:59 +00:00 committed by Catalin Marinas
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 msr hstr_el2, xzr // Disable CP15 traps to EL2
#endif #endif
/* Stage-2 translation */
msr vttbr_el2, xzr
/* Hypervisor stub */ /* Hypervisor stub */
adr x0, __hyp_stub_vectors adr x0, __hyp_stub_vectors
msr vbar_el2, x0 msr vbar_el2, x0