[PATCH 2/2] arm64: KVM: Add VCPU support for Qualcomm Technologies Kryo ARMv8 CPU

[Timur Tabi]

From: Shanker Donthineni <shankerd at codeaurora.org>

This patch enables assignment of 32/64bit guest VCPU to
Qualcomm Technologies ARMv8 CPU. Added KVM_ARM_TARGET_QCOM_KRYO
to the KVM target list and modified vm_target_cpu() to return
KVM_ARM_TARGET_QCOM_KRYO when CPU running in AArch64 mode.

Signed-off-by: Shanker Donthineni <shankerd at codeaurora.org>
Signed-off-by: Timur Tabi <timur at codeaurora.org>
---
 arch/arm64/include/uapi/asm/kvm.h    | 3 ++-
 arch/arm64/kvm/guest.c               | 6 ++++++
 arch/arm64/kvm/sys_regs_generic_v8.c | 2 ++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h
index d268320..426933e 100644
--- a/arch/arm64/include/uapi/asm/kvm.h
+++ b/arch/arm64/include/uapi/asm/kvm.h
@@ -59,8 +59,9 @@ struct kvm_regs {
 #define KVM_ARM_TARGET_CORTEX_A57	2
 #define KVM_ARM_TARGET_XGENE_POTENZA	3
 #define KVM_ARM_TARGET_CORTEX_A53	4
+#define KVM_ARM_TARGET_QCOM_KRYO	5
 
-#define KVM_ARM_NUM_TARGETS		5
+#define KVM_ARM_NUM_TARGETS		6
 
 /* KVM_ARM_SET_DEVICE_ADDR ioctl id encoding */
 #define KVM_ARM_DEVICE_TYPE_SHIFT	0
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 9535bd5..836cf16 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -291,6 +291,12 @@ int __attribute_const__ kvm_target_cpu(void)
 			return KVM_ARM_TARGET_XGENE_POTENZA;
 		};
 		break;
+	case ARM_CPU_IMP_QCOM:
+		switch (part_number & QCOM_CPU_PART_MASK) {
+		case QCOM_CPU_PART_KRYO:
+			return KVM_ARM_TARGET_QCOM_KRYO;
+		}
+		break;
 	};
 
 	return -EINVAL;
diff --git a/arch/arm64/kvm/sys_regs_generic_v8.c b/arch/arm64/kvm/sys_regs_generic_v8.c
index 475fd29..3712ea8 100644
--- a/arch/arm64/kvm/sys_regs_generic_v8.c
+++ b/arch/arm64/kvm/sys_regs_generic_v8.c
@@ -94,6 +94,8 @@ static int __init sys_reg_genericv8_init(void)
 					  &genericv8_target_table);
 	kvm_register_target_sys_reg_table(KVM_ARM_TARGET_XGENE_POTENZA,
 					  &genericv8_target_table);
+	kvm_register_target_sys_reg_table(KVM_ARM_TARGET_QCOM_KRYO,
+					  &genericv8_target_table);
 
 	return 0;
 }
-- 
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.