linux

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Masami Hiramatsu 6af6427a96 x86: xen: insn: Decode Xen and KVM emulate-prefix signature

commit 4d65adfcd1196818659d3bd9b42dccab291e1751 upstream.

Decode Xen and KVM's emulate-prefix signature by x86 insn decoder.
It is called "prefix" but actually not x86 instruction prefix, so
this adds insn.emulate_prefix_size field instead of reusing
insn.prefixes.

If x86 decoder finds a special sequence of instructions of
XEN_EMULATE_PREFIX and 'ud2a; .ascii "kvm"', it just counts the
length, set insn.emulate_prefix_size and fold it with the next
instruction. In other words, the signature and the next instruction
is treated as a single instruction.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: x86@kernel.org
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: xen-devel@lists.xenproject.org
Cc: Randy Dunlap <rdunlap@infradead.org>
Link: https://lkml.kernel.org/r/156777564986.25081.4964537658500952557.stgit@devnote2
[mheyne: resolved contextual conflict in tools/objtools/sync-check.sh]
Signed-off-by: Maximilian Heyne <mheyne@amazon.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-05-15 19:54:47 +02:00

accounting

tools/accounting/getdelays.c: fix netlink attribute length

2020-04-13 10:48:08 +02:00

arch

x86: xen: insn: Decode Xen and KVM emulate-prefix signature

2022-05-15 19:54:47 +02:00

bpf

bpftool: Remove inclusion of utilities.mak from Makefiles

2022-01-27 09:19:53 +01:00

build

tools build: Use $(shell ) instead of `` to get embedded libperl's ccopts