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c67a4a91f5
commit b3dc0695fa upstream.
Gather the emulate prefixes, which forcibly make the following
instruction emulated on virtualization, in one place.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: x86@kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: xen-devel@lists.xenproject.org
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/156777563917.25081.7286628561790289995.stgit@devnote2
Signed-off-by: Maximilian Heyne <mheyne@amazon.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
14 lines
484 B
C
14 lines
484 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_EMULATE_PREFIX_H
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#define _ASM_X86_EMULATE_PREFIX_H
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/*
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* Virt escape sequences to trigger instruction emulation;
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* ideally these would decode to 'whole' instruction and not destroy
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* the instruction stream; sadly this is not true for the 'kvm' one :/
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*/
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#define __XEN_EMULATE_PREFIX 0x0f,0x0b,0x78,0x65,0x6e /* ud2 ; .ascii "xen" */
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#define __KVM_EMULATE_PREFIX 0x0f,0x0b,0x6b,0x76,0x6d /* ud2 ; .ascii "kvm" */
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#endif
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