[PATCH 28/32] KVM: arm64: gic-v5: Set ICH_VCTLR_EL2.En on boot

[Sascha Bischoff]

This control enables virtual HPPI selection, i.e., selection and
delivery of interrupts for a guest (assuming that the guest itself has
opted to receive interrupts). This is set to enabled on boot as there
is no reason for disabling it in normal operation as virtual interrupt
signalling itself is still controlled via the HCR_EL2.

Signed-off-by: Sascha Bischoff <sascha.bischoff at arm.com>
---
 arch/arm64/include/asm/el2_setup.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/include/asm/el2_setup.h b/arch/arm64/include/asm/el2_setup.h
index 07c12f4a69b41..e7e39117c79e5 100644
--- a/arch/arm64/include/asm/el2_setup.h
+++ b/arch/arm64/include/asm/el2_setup.h
@@ -238,6 +238,8 @@
 		     ICH_HFGWTR_EL2_ICC_CR0_EL1			| \
 		     ICH_HFGWTR_EL2_ICC_APR_EL1)
 	msr_s	SYS_ICH_HFGWTR_EL2, x0		// Disable reg write traps
+	mov	x0, #(ICH_VCTLR_EL2_En)
+	msr_s	SYS_ICH_VCTLR_EL2, x0		// Enable vHPPI selection
 .Lskip_gicv5_\@:
 .endm
 
-- 
2.34.1