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The Jailhouse hypervisor is able to statically partition a multicore system into multiple so-called cells. Linux is used as boot loader and continues to run in the root cell after Jailhouse is enabled. Linux can also run in non-root cells. Jailhouse does not emulate usual x86 devices. It also provides no complex ACPI but basic platform information that the boot loader forwards via setup data. This adds the infrastructure to detect when running in a non-root cell so that the platform can be configured as required in succeeding steps. Support is limited to x86-64 so far, primarily because no boot loader stub exists for i386 and, thus, we wouldn't be able to test the 32-bit path. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: jailhouse-dev@googlegroups.com Link: https://lkml.kernel.org/r/7f823d077b38b1a70c526b40b403f85688c137d3.1511770314.git.jan.kiszka@siemens.com
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/*
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* Copyright (C) 2008, VMware, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#ifndef _ASM_X86_HYPERVISOR_H
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#define _ASM_X86_HYPERVISOR_H
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/* x86 hypervisor types */
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enum x86_hypervisor_type {
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X86_HYPER_NATIVE = 0,
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X86_HYPER_VMWARE,
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X86_HYPER_MS_HYPERV,
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X86_HYPER_XEN_PV,
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X86_HYPER_XEN_HVM,
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X86_HYPER_KVM,
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X86_HYPER_JAILHOUSE,
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};
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#ifdef CONFIG_HYPERVISOR_GUEST
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#include <asm/kvm_para.h>
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#include <asm/x86_init.h>
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#include <asm/xen/hypervisor.h>
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struct hypervisor_x86 {
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/* Hypervisor name */
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const char *name;
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/* Detection routine */
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uint32_t (*detect)(void);
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/* Hypervisor type */
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enum x86_hypervisor_type type;
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/* init time callbacks */
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struct x86_hyper_init init;
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/* runtime callbacks */
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struct x86_hyper_runtime runtime;
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};
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extern enum x86_hypervisor_type x86_hyper_type;
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extern void init_hypervisor_platform(void);
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static inline bool hypervisor_is_type(enum x86_hypervisor_type type)
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{
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return x86_hyper_type == type;
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}
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#else
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static inline void init_hypervisor_platform(void) { }
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static inline bool hypervisor_is_type(enum x86_hypervisor_type type)
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{
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return type == X86_HYPER_NATIVE;
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}
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#endif /* CONFIG_HYPERVISOR_GUEST */
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#endif /* _ASM_X86_HYPERVISOR_H */
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