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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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79cc741552
There is no generic way to test whether a kernel is running on a specific hypervisor. But that's required to prevent the upcoming user address space separation feature in certain guest modes. Make the hypervisor type enum unconditionally available and provide a helper function which allows to test for a specific type. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bpetkov@suse.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Laight <David.Laight@aculab.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Eduardo Valentin <eduval@amazon.com> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Cc: aliguori@amazon.com Cc: daniel.gruss@iaik.tugraz.at Cc: hughd@google.com Cc: keescook@google.com Link: https://lkml.kernel.org/r/20171204150606.912938129@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
70 lines
1.8 KiB
C
70 lines
1.8 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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};
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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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