From 63338a38db955cb4e0352c11b78732157c78d30b Mon Sep 17 00:00:00 2001
From: Jan Kiszka <jan.kiszka@siemens.com>
Date: Wed, 7 Mar 2018 08:39:12 +0100
Subject: jailhouse: Provide detection for non-x86 systems

Implement jailhouse_paravirt() via device tree probing on architectures
!= x86. Will be used by the PCI core.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: jailhouse-dev@googlegroups.com
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-pci@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lkml.kernel.org/r/dae9fe0c6e63141c28ca90492fa5712b4c33ffb5.1520408357.git.jan.kiszka@siemens.com
---
 include/linux/hypervisor.h | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'include/linux')

diff --git a/include/linux/hypervisor.h b/include/linux/hypervisor.h
index b19563f9a8eb..fc08b433c856 100644
--- a/include/linux/hypervisor.h
+++ b/include/linux/hypervisor.h
@@ -8,15 +8,28 @@
  */
 
 #ifdef CONFIG_X86
+
+#include <asm/jailhouse_para.h>
 #include <asm/x86_init.h>
+
 static inline void hypervisor_pin_vcpu(int cpu)
 {
 	x86_platform.hyper.pin_vcpu(cpu);
 }
-#else
+
+#else /* !CONFIG_X86 */
+
+#include <linux/of.h>
+
 static inline void hypervisor_pin_vcpu(int cpu)
 {
 }
-#endif
+
+static inline bool jailhouse_paravirt(void)
+{
+	return of_find_compatible_node(NULL, NULL, "jailhouse,cell");
+}
+
+#endif /* !CONFIG_X86 */
 
 #endif /* __LINUX_HYPEVISOR_H */
-- 
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