Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / powerpc / include / asm / kvm_para.h

diff --git a/kernel/arch/powerpc/include/asm/kvm_para.h b/kernel/arch/powerpc/include/asm/kvm_para.h
new file mode 100644 (file)
index 0000000..336a91a
--- /dev/null
+++ b/kernel/arch/powerpc/include/asm/kvm_para.h
@@ -0,0 +1,69 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb@us.ibm.com>
+ */
+#ifndef __POWERPC_KVM_PARA_H__
+#define __POWERPC_KVM_PARA_H__
+
+#include <uapi/asm/kvm_para.h>
+
+#ifdef CONFIG_KVM_GUEST
+
+#include <linux/of.h>
+
+static inline int kvm_para_available(void)
+{
+       struct device_node *hyper_node;
+
+       hyper_node = of_find_node_by_path("/hypervisor");
+       if (!hyper_node)
+               return 0;
+
+       if (!of_device_is_compatible(hyper_node, "linux,kvm"))
+               return 0;
+
+       return 1;
+}
+
+#else
+
+static inline int kvm_para_available(void)
+{
+       return 0;
+}
+
+#endif
+
+static inline unsigned int kvm_arch_para_features(void)
+{
+       unsigned long r;
+
+       if (!kvm_para_available())
+               return 0;
+
+       if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r))
+               return 0;
+
+       return r;
+}
+
+static inline bool kvm_check_and_clear_guest_paused(void)
+{
+       return false;
+}
+
+#endif /* __POWERPC_KVM_PARA_H__ */