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Commit 63338a38 authored by Jan Kiszka's avatar Jan Kiszka Committed by Thomas Gleixner
Browse files

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: default avatarJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Reviewed-by: default avatarJuergen 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
parent 0a5169ad

Documentation/devicetree/bindings/jailhouse.txt

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Jailhouse non-root cell device tree bindings

--------------------------------------------



When running in a non-root Jailhouse cell (partition), the device tree of this

platform shall have a top-level "hypervisor" node with the following

properties:



- compatible = "jailhouse,cell"

arch/x86/include/asm/jailhouse_para.h

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/* SPDX-License-Identifier: GPL2.0 */



/*

 * Jailhouse paravirt_ops implementation

 * Jailhouse paravirt detection

 *

 * Copyright (c) Siemens AG, 2015-2017

 *

include/linux/hypervisor.h

+15 −2
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@@ -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 */