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KVM: arm64: gic-v5: Set ICH_VCTLR_EL2.En on boot

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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@arm.com>
Link: https://patch.msgid.link/20260319154937.3619520-37-sascha.bischoff@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Sascha Bischoff
2026-03-19 15:59:04 +00:00
committed by Marc Zyngier
parent 37a2529468
commit a8946fde86
1 changed files with 2 additions and 0 deletions
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2
arch/arm64/include/asm/el2_setup.h
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@@ -248,6 +248,8 @@
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