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[v5,08/34] arm64: KVM: Implement HVC_GET_VECTORS in the init code

Message ID 20170403183807.1620-9-marc.zyngier@arm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Marc Zyngier April 3, 2017, 6:37 p.m. UTC 
Now that we have an infrastructure to handle hypercalls in the KVM
init code, let's implement HVC_GET_VECTORS there.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: James Morse <james.morse@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
---
 arch/arm64/kvm/hyp-init.S | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
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Patch

diff --git a/arch/arm64/kvm/hyp-init.S b/arch/arm64/kvm/hyp-init.S
index 5e39ad53bcae..fded932ede1b 100644
--- a/arch/arm64/kvm/hyp-init.S
+++ b/arch/arm64/kvm/hyp-init.S
@@ -124,7 +124,12 @@  __do_hyp_init:
 ENDPROC(__kvm_hyp_init)
 
 ENTRY(__kvm_handle_stub_hvc)
-	cmp	x0, #HVC_RESET_VECTORS
+	cmp	x0, #HVC_GET_VECTORS
+	b.ne	1f
+	mrs	x0, vbar_el2
+	b	exit
+
+1:	cmp	x0, #HVC_RESET_VECTORS
 	b.ne	1f
 	/*
 	 * Reset kvm back to the hyp stub.