6af6427a96
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>
126 lines
3.8 KiB
Bash
Executable File
126 lines
3.8 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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FILES='
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include/uapi/linux/const.h
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include/uapi/drm/drm.h
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include/uapi/drm/i915_drm.h
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include/uapi/linux/fadvise.h
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include/uapi/linux/fcntl.h
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include/uapi/linux/fs.h
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include/uapi/linux/fscrypt.h
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include/uapi/linux/kcmp.h
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include/uapi/linux/kvm.h
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include/uapi/linux/in.h
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include/uapi/linux/mount.h
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include/uapi/linux/perf_event.h
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include/uapi/linux/prctl.h
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include/uapi/linux/sched.h
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include/uapi/linux/stat.h
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include/uapi/linux/usbdevice_fs.h
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include/uapi/linux/vhost.h
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include/uapi/sound/asound.h
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include/linux/bits.h
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include/linux/const.h
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include/linux/hash.h
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include/uapi/linux/hw_breakpoint.h
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arch/x86/include/asm/disabled-features.h
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arch/x86/include/asm/required-features.h
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arch/x86/include/asm/cpufeatures.h
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arch/x86/include/asm/inat_types.h
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arch/x86/include/asm/emulate_prefix.h
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arch/x86/include/uapi/asm/prctl.h
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arch/x86/lib/x86-opcode-map.txt
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arch/x86/tools/gen-insn-attr-x86.awk
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arch/arm/include/uapi/asm/perf_regs.h
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arch/arm64/include/uapi/asm/perf_regs.h
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arch/powerpc/include/uapi/asm/perf_regs.h
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arch/s390/include/uapi/asm/perf_regs.h
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arch/x86/include/uapi/asm/perf_regs.h
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arch/x86/include/uapi/asm/kvm.h
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arch/x86/include/uapi/asm/kvm_perf.h
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arch/x86/include/uapi/asm/svm.h
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arch/x86/include/uapi/asm/unistd.h
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arch/x86/include/uapi/asm/vmx.h
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arch/powerpc/include/uapi/asm/kvm.h
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arch/s390/include/uapi/asm/kvm.h
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arch/s390/include/uapi/asm/kvm_perf.h
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arch/s390/include/uapi/asm/ptrace.h
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arch/s390/include/uapi/asm/sie.h
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arch/arm/include/uapi/asm/kvm.h
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arch/arm64/include/uapi/asm/kvm.h
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arch/arm64/include/uapi/asm/unistd.h
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arch/alpha/include/uapi/asm/errno.h
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arch/mips/include/asm/errno.h
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arch/mips/include/uapi/asm/errno.h
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arch/parisc/include/uapi/asm/errno.h
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arch/powerpc/include/uapi/asm/errno.h
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arch/sparc/include/uapi/asm/errno.h
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arch/x86/include/uapi/asm/errno.h
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include/asm-generic/bitops/arch_hweight.h
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include/asm-generic/bitops/const_hweight.h
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include/asm-generic/bitops/__fls.h
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include/asm-generic/bitops/fls.h
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include/asm-generic/bitops/fls64.h
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include/linux/coresight-pmu.h
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include/uapi/asm-generic/errno.h
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include/uapi/asm-generic/errno-base.h
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include/uapi/asm-generic/ioctls.h
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include/uapi/asm-generic/mman-common.h
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include/uapi/asm-generic/unistd.h
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'
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check_2 () {
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file1=$1
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file2=$2
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shift
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shift
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cmd="diff $* $file1 $file2 > /dev/null"
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test -f $file2 && {
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eval $cmd || {
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echo "Warning: Kernel ABI header at '$file1' differs from latest version at '$file2'" >&2
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echo diff -u $file1 $file2
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}
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}
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}
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check () {
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file=$1
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shift
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check_2 tools/$file $file $*
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}
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# Check if we have the kernel headers (tools/perf/../../include), else
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# we're probably on a detached tarball, so no point in trying to check
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# differences.
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test -d ../../include || exit 0
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cd ../..
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# simple diff check
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for i in $FILES; do
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check $i -B
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done
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# diff with extra ignore lines
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check arch/x86/lib/memcpy_64.S '-I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>"'
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check arch/x86/lib/memset_64.S '-I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>"'
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check include/uapi/asm-generic/mman.h '-I "^#include <\(uapi/\)*asm-generic/mman-common\(-tools\)*.h>"'
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check include/uapi/linux/mman.h '-I "^#include <\(uapi/\)*asm/mman.h>"'
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check include/linux/ctype.h '-I "isdigit("'
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check lib/ctype.c '-I "^EXPORT_SYMBOL" -I "^#include <linux/export.h>" -B'
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check arch/x86/include/asm/inat.h '-I "^#include [\"<]\(asm/\)*inat_types.h[\">]"'
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check arch/x86/include/asm/insn.h '-I "^#include [\"<]\(asm/\)*inat.h[\">]"'
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check arch/x86/lib/inat.c '-I "^#include [\"<]\(../include/\)*asm/insn.h[\">]"'
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check arch/x86/lib/insn.c '-I "^#include [\"<]\(../include/\)*asm/in\(at\|sn\).h[\">]" -I "^#include [\"<]\(../include/\)*asm/emulate_prefix.h[\">]"'
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# diff non-symmetric files
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check_2 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl
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cd tools/perf
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