Masami Hiramatsu 8b7e20a7ba x86/decoder: Add TEST opcode to Group3-2 ... Add TEST opcode to Group3-2 reg=001b as same as Group3-1 does. Commit 12a78d43de ("x86/decoder: Add new TEST instruction pattern") added a TEST opcode assignment to f6 XX/001/XXX (Group 3-1), but did not add f7 XX/001/XXX (Group 3-2). Actually, this TEST opcode variant (ModRM.reg /1) is not described in the Intel SDM Vol2 but in AMD64 Architecture Programmer's Manual Vol.3, Appendix A.2 Table A-6. ModRM.reg Extensions for the Primary Opcode Map. Without this fix, Randy found a warning by insn_decoder_test related to this issue as below. HOSTCC arch/x86/tools/insn_decoder_test HOSTCC arch/x86/tools/insn_sanity TEST posttest arch/x86/tools/insn_decoder_test: warning: Found an x86 instruction decoder bug, please report this. arch/x86/tools/insn_decoder_test: warning: ffffffff81000bf1: f7 0b 00 01 08 00 testl $0x80100,(%rbx) arch/x86/tools/insn_decoder_test: warning: objdump says 6 bytes, but insn_get_length() says 2 arch/x86/tools/insn_decoder_test: warning: Decoded and checked 11913894 instructions with 1 failures TEST posttest arch/x86/tools/insn_sanity: Success: decoded and checked 1000000 random instructions with 0 errors (seed:0x871ce29c) To fix this error, add the TEST opcode according to AMD64 APM Vol.3. [ bp: Massage commit message. ] Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lkml.kernel.org/r/157966631413.9580.10311036595431878351.stgit@devnote2		2020-01-22 12:17:32 +01:00
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accounting
arch	x86/decoder: Add TEST opcode to Group3-2	2020-01-22 12:17:32 +01:00
bpf	bpftool: Fix printing incorrect pointer in btf_dump_ptr	2020-01-11 19:08:21 -08:00
build	perf tools: Allow to link with libbpf dynamicaly	2019-11-26 11:17:45 -03:00
cgroup
debugging
firewire
firmware
gpio	tools: gpio: Correctly add make dependencies for gpio_utils	2019-11-13 13:46:04 +01:00
hv	tools: hv: add vmbus testing tool	2019-11-21 20:10:44 -05:00
iio	tools: iio: Correctly add make dependency for iio_utils	2019-11-10 17:11:06 +00:00
include	tools headers kvm: Sync linux/kvm.h with the kernel sources	2019-12-11 10:08:35 -03:00
io_uring
kvm/kvm_stat
laptop
leds
lib	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2020-01-18 12:55:19 -08:00
memory-model
nfsd
objtool	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-11-26 15:04:47 -08:00
pci	tools: PCI: Fix fd leakage	2019-10-29 12:04:18 +00:00
pcmcia
perf	perf hists: Fix variable name's inconsistency in hists__for_each() macro	2019-12-20 18:58:13 -03:00
power	platform-drivers-x86 for v5.5-1	2019-12-01 18:24:25 -08:00
scripts
spi
testing	selftests: mlxsw: qos_mc_aware: Fix mausezahn invocation	2020-01-15 04:16:30 -08:00
thermal/tmon
time
usb	usbip: tools: fix fd leakage in the function of read_attr_usbip_status	2019-11-07 11:25:01 +01:00
virtio	tools/virtio: xen stub	2019-10-13 09:38:27 -04:00
vm
wmi
Makefile