KVM: Add capability to advertise PSCI v0.2 support

User space (i.e. QEMU or KVMTOOL) should be able to check whether KVM
ARM/ARM64 supports in-kernel PSCI v0.2 emulation. For this purpose, we
define KVM_CAP_ARM_PSCI_0_2 in KVM user space interface header.

Signed-off-by: Anup Patel <anup.patel@linaro.org>
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
(cherry picked from commit 717abd208dff75b343243aa5ed688f62190dda5e)
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 56347ab54cf7230a173f5258ec7ea63b79a945bd..cb7ebcc7a9dbdfe8a54d11b2b6f9905140d29bbd 100644 (file)
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -669,6 +669,7 @@ struct kvm_ppc_smmu_info {
 #define KVM_CAP_IRQ_XICS 92
 #define KVM_CAP_ARM_EL1_32BIT 93
 #define KVM_CAP_EXT_EMUL_CPUID 95
+#define KVM_CAP_ARM_PSCI_0_2 102
 
 #ifdef KVM_CAP_IRQ_ROUTING