[PATCH v3 03/22] KVM: arm64: Define PMI{CNTR,FILTR}_EL0 as undef_access

Colton Lewis
2025-06-26T20:05:55Z

Because KVM isn't fully prepared to support these yet even though the
host PMUv3 driver does, define them as undef_access for now.

Signed-off-by: Colton Lewis <coltonlewis@google.com>
---
arch/arm64/kvm/sys_regs.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 76c2f0da821f..99fdbe174202 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -3092,6 +3092,9 @@ static const struct sys_reg_desc sys_reg_descs[] = {
{ SYS_DESC(SYS_SVCR), undef_access, reset_val, SVCR, 0, .visibility = sme_visibility },
{ SYS_DESC(SYS_FPMR), undef_access, reset_val, FPMR, 0, .visibility = fp8_visibility },

+ { SYS_DESC(SYS_PMICNTR_EL0), undef_access },
+ { SYS_DESC(SYS_PMICFILTR_EL0), undef_access },
+
{ PMU_SYS_REG(PMCR_EL0), .access = access_pmcr, .reset = reset_pmcr,
.reg = PMCR_EL0, .get_user = get_pmcr, .set_user = set_pmcr },
{ PMU_SYS_REG(PMCNTENSET_EL0),
--
2.50.0.727.gbf7dc18ff4-goog