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2013-06-12x86, relocs: Move __vvar_page from S_ABS to S_RELKees Cook
The __vvar_page relocation should actually be listed in S_REL instead of S_ABS. Oddly, this didn't always cause things to break, presumably because there are no users for relocation information on 64 bits yet. [ hpa: Not for stable - new code in 3.10 ] Signed-off-by: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/20130611185652.GA23674@www.outflux.net Reported-by: Michael Davidson <md@google.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-04-16x86, relocs: Refactor the relocs tool to merge 32- and 64-bit ELFH. Peter Anvin
Refactor the relocs tool so that the same tool can handle 32- and 64-bit ELF. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/1365797627-20874-5-git-send-email-keescook@chromium.org
2013-04-16x86, relocs: Build separate 32/64-bit toolsKees Cook
Since the ELF structures and access macros change size based on 32 vs 64 bits, build a separate 32-bit relocs tool (for handling realmode and 32-bit relocations), and a 64-bit relocs tool (for handling 64-bit kernel relocations). Signed-off-by: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/1365797627-20874-5-git-send-email-keescook@chromium.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-04-16x86, relocs: Add 64-bit ELF support to relocs toolKees Cook
This adds the ability to process relocations from the 64-bit kernel ELF, if built with ELF_BITS=64 defined. The special case for the percpu area is handled, along with some other symbols specific to the 64-bit kernel. Based on work by Neill Clift and Michael Davidson. Signed-off-by: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/1365797627-20874-4-git-send-email-keescook@chromium.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-04-16x86, relocs: Consolidate processing logicKees Cook
Instead of counting and then processing relocations, do it in a single pass. This splits the processing logic into separate functions for realmode and 32-bit (and paves the way for 64-bit). Also extracts helper functions when emitting relocations. Based on work by Neill Clift and Michael Davidson. Signed-off-by: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/1365797627-20874-3-git-send-email-keescook@chromium.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-04-16x86, relocs: Generalize ELF structure namesKees Cook
In preparation for making the reloc tool operate on 64-bit relocations, generalize the structure names for easy recompilation via #defines. Based on work by Neill Clift and Michael Davidson. Signed-off-by: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/1365797627-20874-2-git-send-email-keescook@chromium.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-02-05Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "Three fixlets and two small (and low risk) hw-enablement changes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf: Fix event group context move x86/perf: Add IvyBridge EP support perf/x86: Fix P6 driver section warning arch/x86/tools/insn_sanity.c: Identify source of messages perf/x86: Enable Intel Lincroft/Penwell/Cloverview Atom support
2013-01-27x86/boot: Fix minor fd leakage in tools/relocs.cCong Ding
The opened file should be closed. Signed-off-by: Cong Ding <dinggnu@gmail.com> Cc: Kusanagi Kouichi <slash@ac.auone-net.jp> Cc: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Matt Fleming <matt.fleming@intel.com> Link: http://lkml.kernel.org/r/1358183628-27784-1-git-send-email-dinggnu@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-01-24arch/x86/tools/insn_sanity.c: Identify source of messagesAndrew Morton
The kernel build prints: Building modules, stage 2. TEST posttest MODPOST 3821 modules TEST posttest Success: decoded and checked 1000000 random instructions with 0 errors (seed:0xaac4bc47) CC arch/x86/boot/a20.o CC arch/x86/boot/cmdline.o AS arch/x86/boot/copy.o HOSTCC arch/x86/boot/mkcpustr CC arch/x86/boot/cpucheck.o CC arch/x86/boot/early_serial_console.o which is irritating because you don't know what program is proudly pronouncing its success. So, as described in "console mode programming user interface guidelines version 101" which doesn't exist, change this program to identify the source of its messages. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-12-10x86: Fix the error of using "const" in gen-insn-attr-x86.awkCong Ding
The original version code causes following sparse warnings: arch/x86/lib/inat-tables.c:1080:25: warning: duplicate const arch/x86/lib/inat-tables.c:1095:25: warning: duplicate const arch/x86/lib/inat-tables.c:1118:25: warning: duplicate const for the variables inat_escape_tables, inat_group_tables, and inat_avx_tables in the code generated by gen-insn-attr-x86.awk. The author Masami Hiramutsu says here is to make both the value pointed by the pointers and the pointers itself read-only, so we move the "const" to be after the "*". Signed-off-by: Cong Ding <dinggnu@gmail.com> Link: http://lkml.kernel.org/r/20121209082103.GA9181@gmail.com Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-10-02UAPI: x86: Fix the test_get_len toolDavid Howells
Fix the x86 test_get_len tool to have the right include paths in the right order (it includes a non-exported kernel header directly), otherwise errors like the following occur: /data/fs/linux-2.6-hdr/include/linux/types.h:18:26: error: conflicting types for 'fd_set' /usr/include/sys/select.h:78:5: note: previous declaration of 'fd_set' was here and /data/fs/linux-2.6-hdr/include/linux/string.h:42:12: error: expected identifier or '(' before '__extension__' Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-06-06x86/decoder: Fix bsr/bsf/jmpe decoding with operand-size prefixMasami Hiramatsu
Fix the x86 instruction decoder to decode bsr/bsf/jmpe with operand-size prefix (66h). This fixes the test case failure reported by Linus, attached below. bsf/bsr/jmpe have a special encoding. Opcode map in Intel Software Developers Manual vol2 says they have TZCNT/LZCNT variants if it has F3h prefix. However, there is no information if it has other 66h or F2h prefixes. Current instruction decoder supposes that those are bad instructions, but it actually accepts at least operand-size prefixes. H. Peter Anvin further explains: " TZCNT/LZCNT are F3 + BSF/BSR exactly because the F2 and F3 prefixes have historically been no-ops with most instructions. This allows software to unconditionally use the prefixed versions and get TZCNT/LZCNT on the processors that have them if they don't care about the difference. " This fixes errors reported by test_get_len: Warning: arch/x86/tools/test_get_len found difference at <em_bsf>:ffffffff81036d87 Warning: ffffffff81036de5: 66 0f bc c2 bsf %dx,%ax Warning: objdump says 4 bytes, but insn_get_length() says 3 Warning: arch/x86/tools/test_get_len found difference at <em_bsr>:ffffffff81036ea6 Warning: ffffffff81036f04: 66 0f bd c2 bsr %dx,%ax Warning: objdump says 4 bytes, but insn_get_length() says 3 Warning: decoded and checked 13298882 instructions with 2 warnings Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Reported-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <yrl.pp-manager.tt@hitachi.com> Link: http://lkml.kernel.org/r/20120604150911.22338.43296.stgit@localhost.localdomain Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-05-29Merge branch 'x86-trampoline-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 trampoline rework from H. Peter Anvin: "This code reworks all the "trampoline"/"realmode" code (various bits that need to live in the first megabyte of memory, most but not all of which runs in real mode at some point) in the kernel into a single object. The main reason for doing this is that it eliminates the last place in the kernel where we needed pages to be mapped RWX. This code separates all that code into proper R/RW/RX pages." Fix up conflicts in arch/x86/kernel/Makefile (mca removed next to reboot code), and arch/x86/kernel/reboot.c (reboot code moved around in one branch, modified in this one), and arch/x86/tools/relocs.c (mostly same code came in earlier due to working around the ld bugs just before the 3.4 release). Also remove stale x86-relocs entry from scripts/.gitignore as per Peter Anvin. * commit '61f5446169046c217a5479517edac3a890c3bee7': (36 commits) x86, realmode: Move end signature into header.S x86, relocs: When printing an error, say relative or absolute x86, relocs: More relocations which may end up as absolute x86, relocs: Workaround for binutils 2.22.52.0.1 section bug xen-acpi-processor: Add missing #include <xen/xen.h> acpi, bgrd: Add missing <linux/io.h> to drivers/acpi/bgrt.c x86, realmode: Change EFER to a single u64 field x86, realmode: Move kernel/realmode.c to realmode/init.c x86, realmode: Move not-common bits out of trampoline_common.S x86, realmode: Mask out EFER.LMA when saving trampoline EFER x86, realmode: Fix no cache bits test in reboot_32.S x86, realmode: Make sure all generated files are listed in targets x86, realmode: build fix: remove duplicate build x86, realmode: read cr4 and EFER from kernel for 64-bit trampoline x86, realmode: fixes compilation issue in tboot.c x86, realmode: move relocs from scripts/ to arch/x86/tools x86, realmode: header for trampoline code x86, realmode: flattened rm hierachy x86, realmode: don't copy real_mode_header x86, realmode: fix 64-bit wakeup sequence ...
2012-05-24x86, relocs: Add jiffies and jiffies_64 to the relative whitelistH. Peter Anvin
The symbol jiffies is created in the linker script as an alias to jiffies_64. Unfortunately this is done outside any section, and apparently GNU ld 2.21 doesn't carry the section with it, so we end up with an absolute symbol and therefore a broken kernel. Add jiffies and jiffies_64 to the whitelist. The most disturbing bit with this discovery is that it shows that we have had multiple linker bugs in this area crossing multiple generations, and have been silently building bad kernels for some time. Link: http://lkml.kernel.org/r/20120524171604.0d98284f3affc643e9714470@canb.auug.org.au Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: <stable@vger.kernel.org> v3.4
2012-05-23x86-32, relocs: Whitelist more symbols for ld bug workaroundH. Peter Anvin
As noted in checkin: a3e854d95 x86, relocs: Workaround for binutils 2.22.52.0.1 section bug ld version 2.22.52.0.[12] can incorrectly promote relative symbols to absolute, if the output section they appear in is otherwise empty. Since checkin: 6520fe55 x86, realmode: 16-bit real-mode code support for relocs tool we actually check for this and error out rather than silently creating a kernel which will malfunction if relocated. Ingo found a configuration in which __start_builtin_fw triggered the warning. Go through the linker script sources and look for more symbols that could plausibly get bogusly promoted to absolute, and add them to the whitelist. In general, if the following error triggers: Invalid absolute R_386_32 relocation: <symbol> ... then we should verify that <symbol> is really meant to be relocated, and add it and any related symbols manually to the S_REL regexp. Please note that 6520fe55 does not introduce the error, only the check for the error -- without 6520fe55 this version of ld will simply produce a corrupt kernel if CONFIG_RELOCATABLE is set on x86-32. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: <stable@vger.kernel.org> v3.4
2012-05-18x86, relocs: When printing an error, say relative or absoluteH. Peter Anvin
When the relocs tool throws an error, let the error message say if it is an absolute or relative symbol. This should make it a lot more clear what action the programmer needs to take and should help us find the reason if additional symbol bugs show up. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: <stable@vger.kernel.org>
2012-05-18x86, relocs: Workaround for binutils 2.22.52.0.1 section bugH. Peter Anvin
GNU ld 2.22.52.0.1 has a bug that it blindly changes symbols from section-relative to absolute if they are in a section of zero length. This turns the symbols __init_begin and __init_end into absolute symbols. Let the relocs program know that those should be treated as relative symbols. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: H.J. Lu <hjl.tools@gmail.com> Cc: <stable@vger.kernel.org> Cc: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
2012-05-18x86, realmode: 16-bit real-mode code support for relocs toolH. Peter Anvin
A new option is added to the relocs tool called '--realmode'. This option causes the generation of 16-bit segment relocations and 32-bit linear relocations for the real-mode code. When the real-mode code is moved to the low-memory during kernel initialization, these relocation entries can be used to relocate the code properly. In the assembly code 16-bit segment relocations must be relative to the 'real_mode_seg' absolute symbol. Linear relocations must be relative to a symbol prefixed with 'pa_'. 16-bit segment relocation is used to load cs:ip in 16-bit code. Linear relocations are used in the 32-bit code for relocatable data references. They are declared in the linker script of the real-mode code. The relocs tool is moved to arch/x86/tools/relocs.c, and added new target archscripts that can be used to build scripts needed building an architecture. be compiled before building the arch/x86 tree. [ hpa: accelerating this because it detects invalid absolute relocations, a serious bug in binutils 2.22.52.0.x which currently produces bad kernels. ] Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-2-git-send-email-jarkko.sakkinen@intel.com Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: <stable@vger.kernel.org>
2012-05-18x86, relocs: When printing an error, say relative or absoluteH. Peter Anvin
When the relocs tool throws an error, let the error message say if it is an absolute or relative symbol. This should make it a lot more clear what action the programmer needs to take. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2012-05-18x86, relocs: More relocations which may end up as absoluteH. Peter Anvin
GNU ld 2.22.52.0.1 has a bug that it blindly changes symbols from section-relative to absolute if they are in a section of zero length. This turns the symbols __init_begin and __init_end into absolute symbols. Let the relocs program know that those should be treated as relative symbols. This bug is exposed by checkin 433de739bbc2 x86, realmode: 16-bit real-mode code support for relocs tool only in the sense that that checkin changes the relocs tool to report an error instead of silently generating a kernel which is broken if relocated. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: H.J. Lu <hjl.tools@gmail.com> Cc: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
2012-05-18x86, relocs: Workaround for binutils 2.22.52.0.1 section bugH. Peter Anvin
GNU ld 2.22.52.0.1 has a bug that it blindly changes symbols from section-relative to absolute if they are in a section of zero length. This turns the symbols __init_begin and __init_end into absolute symbols. Let the relocs program know that those should be treated as relative symbols. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: H.J. Lu <hjl.tools@gmail.com>
2012-05-08x86, realmode: move relocs from scripts/ to arch/x86/toolsJarkko Sakkinen
Moved relocs tool from scripts/ to arch/x86/tools because it is architecture specific script. Added new target archscripts that can be used to build scripts needed building an architecture. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-22-git-send-email-jarkko.sakkinen@intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Michal Marek <mmarek@suse.cz>
2011-12-05x86/tools: Add decoded instruction dump modeMasami Hiramatsu
Add instruction dump mode to insn_sanity tool for checking decoder really decoded instructions. This mode is enabled when passing double -v (-vv) to insn_sanity. It is useful for who wants to check whether the decoder can decode some instructions correctly. e.g. $ echo 0f 73 10 11 | ./insn_sanity -y -vv -i - Instruction = { .prefixes = { .value = 0, bytes[] = {0, 0, 0, 0}, .got = 1, .nbytes = 0}, .rex_prefix = { .value = 0, bytes[] = {0, 0, 0, 0}, .got = 1, .nbytes = 0}, .vex_prefix = { .value = 0, bytes[] = {0, 0, 0, 0}, .got = 1, .nbytes = 0}, .opcode = { .value = 29455, bytes[] = {f, 73, 0, 0}, .got = 1, .nbytes = 2}, .modrm = { .value = 16, bytes[] = {10, 0, 0, 0}, .got = 1, .nbytes = 1}, .sib = { .value = 0, bytes[] = {0, 0, 0, 0}, .got = 1, .nbytes = 0}, .displacement = { .value = 0, bytes[] = {0, 0, 0, 0}, .got = 1, .nbytes = 0}, .immediate1 = { .value = 17, bytes[] = {11, 0, 0, 0}, .got = 1, .nbytes = 1}, .immediate2 = { .value = 0, bytes[] = {0, 0, 0, 0}, .got = 0, .nbytes = 0}, .attr = 44800, .opnd_bytes = 4, .addr_bytes = 8, .length = 4, .x86_64 = 1, .kaddr = 0x7fff0f7d9430} Success: decoded and checked 1 given instructions with 0 errors (seed:0x0) Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20111205120603.15475.91192.stgit@cloud Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-05x86: Update instruction decoder to support new AVX formatsMasami Hiramatsu
Since new Intel software developers manual introduces new format for AVX instruction set (including AVX2), it is important to update x86-opcode-map.txt to fit those changes. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20111205120557.15475.13236.stgit@cloud Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-05x86/tools: Fix insn_sanity message outputsMasami Hiramatsu
Fix x86 instruction decoder test to dump all error messages to stderr and others to stdout. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20111205120550.15475.70149.stgit@cloud Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-05x86/tools: Fix instruction decoder message outputMasami Hiramatsu
Fix instruction decoder test (insn_sanity), so that it doesn't show both info and error messages twice on same instruction. (In that case, show only error message) Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20111205120545.15475.7928.stgit@cloud Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-12-05x86/tools: Fix Makefile to build all test toolsMasami Hiramatsu
Fix arch/x86/tools/Makefile to compile both test tools correctly. This bug leads build error. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20111205120533.15475.62047.stgit@cloud Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-11-10x86, perf: Add a build-time sanity test to the x86 decoderMasami Hiramatsu
Add a sanity test of x86 insn decoder against a stream of randomly generated input, at build time. This test is also able to reproduce any bug that might trigger by allowing the passing of random-seed and iteration-number to the test, or by passing input which has invalid byte code. Changes in V2: - Code cleanup. - Show how to reproduce the error by insn_sanity test. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: acme@redhat.com Cc: ming.m.lin@intel.com Cc: robert.richter@amd.com Cc: ravitillo@lbl.gov Cc: yrl.pp-manager.tt@hitachi.com Cc: Andi Kleen <andi@firstfloor.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20111020140109.20938.92572.stgit@localhost.localdomain Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-07x86: Remove trailing spaces in messagesFrans Pop
Signed-off-by: Frans Pop <elendil@planet.nl> Cc: Avi Kivity <avi@redhat.com> Cc: x86@kernel.org LKML-Reference: <1265478443-31072-10-git-send-email-elendil@planet.nl> [ Left out the KVM bits. ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-28Merge branch 'iommu/fixes' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent
2009-12-18x86: Fix objdump version check in chkobjdump.awk for different formats.Masami Hiramatsu
Different version of objdump says its version in different way; GNU objdump 2.16.1 or GNU objdump version 2.19.51.0.14-1.fc11 20090722 This patch uses the first argument which starts with a number as version string. Changes in v2: - Remove unneeded increment. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <20091218154012.16960.5113.stgit@dhcp-100-2-132.bos.redhat.com> Suggested-by: H. Peter Anvin <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-12-17x86: Fix objdump version check in arch/x86/tools/chkobjdump.awkakpm@linux-foundation.org
It says Warning: objdump version is older than 2.19 Warning: Skipping posttest. because it used the wrong field from `objdump -v': akpm:/usr/src/25> /opt/crosstool/gcc-4.0.2-glibc-2.3.6/x86_64-unknown-linux-gnu/bin/x86_64-unknown-linux-gnu-objdump -v GNU objdump 2.16.1 Copyright 2005 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License. This program has absolutely no warranty. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <200912172326.nBHNQaQl024796@imap1.linux-foundation.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Cc: Masami Hiramatsu <mhiramat@redhat.com>
2009-12-17x86: Don't use POSIX character classes in gen-insn-attr-x86.awkRoland Dreier
Not all awk implementations (including the default awk in Ubuntu 9.10) support POSIX character classes. Since x86-opcode-map.txt is plain ASCII, we can just use explicit ranges for lower case, alphabetic, and alphanumeric characters instead. Signed-off-by: Roland Dreier <rolandd@cisco.com> Acked-by: Masami Hiramatsu <mhiramat@redhat.com> LKML-Reference: <adabphy750b.fsf@roland-alpha.cisco.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-12-16Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: Fix kprobes build with non-gawk awk x86: Split swiotlb initialization into two stages x86: Regex support and known-movable symbols for relocs, fix _end x86, msr: Remove incorrect, duplicated code in the MSR driver x86: Merge kernel_thread() x86: Sync 32/64-bit kernel_thread x86, 32-bit: Use same regs as 64-bit for kernel_thread_helper x86, 64-bit: Use user_mode() to determine new stack pointer in copy_thread() x86, 64-bit: Move kernel_thread to C x86-64, paravirt: Call set_iopl_mask() on 64 bits x86-32: Avoid pipeline serialization in PTREGSCALL1 and 2 x86: Merge sys_clone x86, 32-bit: Convert sys_vm86 & sys_vm86old x86: Merge sys_sigaltstack x86: Merge sys_execve x86: Merge sys_iopl x86-32: Add new pt_regs stubs cpumask: Use modern cpumask style in arch/x86/kernel/cpu/mcheck/mce-inject.c
2009-12-15x86: Fix kprobes build with non-gawk awkJonathan Nieder
The instruction attribute table generator fails when run by mawk or original-awk: $ mawk -f arch/x86/tools/gen-insn-attr-x86.awk \ arch/x86/lib/x86-opcode-map.txt > /dev/null Semantic error at 240: Second IMM error $ echo $? 1 Line 240 contains "c8: ENTER Iw,Ib", which indicates that this instruction has two immediate operands, the second of which is one byte. The script loops through the immediate operands using a for loop. Unfortunately, there is no guarantee in awk that a for (variable in array) loop will return the indices in increasing order. Internally, both original-awk and mawk iterate over a hash table for this purpose, and both implementations happen to produce the index 2 before 1. The supposed second immediate operand is more than one byte wide, producing the error. So loop over the indices in increasing order instead. As a side-effect, with mawk this means the silly two-entry hash table never has to be built. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Acked-by Masami Hiramatsu <mhiramat@redhat.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091213220437.GA27718@progeny.tock> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-06x86, perf probe: Fix warning in test_get_len()Jean Delvare
Fix the following warning: arch/x86/tools/test_get_len.c: In function "main": arch/x86/tools/test_get_len.c:116: warning: unused variable "c" Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-03Merge branch 'perf/probes' into perf/coreIngo Molnar
Merge reason: add these fixes to 'perf probe'. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-20x86: insn decoder test checks objdump versionMasami Hiramatsu
Check objdump version before using it for insn decoder build test, because some older objdump can't decode AVX code correctly. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Jim Keniston <jkenisto@us.ibm.com> LKML-Reference: <20091120171314.6715.30390.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-11-20x86: Fix insn decoder test typosMasami Hiramatsu
Fix postest_verbose to posttest_verbose, and add posttest_64bit option for CONFIG_64BIT != y, since old command just passed '-' instead of '-n' when CONFIG_64BIT is not set. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Jim Keniston <jkenisto@us.ibm.com> LKML-Reference: <20091120171307.6715.66099.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-11-19x86: Instruction decoder test should generate build warningMasami Hiramatsu
Since some instructions are not decoded correctly by older versions of objdump, it may cause false positive error in insn decoder posttest. This changes build error of insn decoder test to build warning. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> LKML-Reference: <20091116230631.5250.41579.stgit@harusame> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-17x86: Show symbol name if insn decoder test failedMasami Hiramatsu
Show symbol name if insn decoder test find a difference. This will help us to find out where the issue is. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> LKML-Reference: <20091116230624.5250.49813.stgit@harusame> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-17x86: Add verbose option to insn decoder testMasami Hiramatsu
Add verbose option to insn decoder test. This dumps decoded instruction when building kernel with V=1. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap <systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> LKML-Reference: <20091116230618.5250.18762.stgit@harusame> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-29x86: AVX instruction set decoder supportMasami Hiramatsu
Add Intel AVX(Advanced Vector Extensions) instruction set support to x86 instruction decoder. This adds insn.vex_prefix field for storing VEX prefixes, and introduces some original tags for expressing opcodes attributes. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> LKML-Reference: <20091027204226.30545.23451.stgit@harusame> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-29x86: Merge INAT_REXPFX into INAT_PFX_*Masami Hiramatsu
Merge INAT_REXPFX into INAT_PFX_* macro and rename it to INAT_PFX_REX. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> LKML-Reference: <20091027204211.30545.58090.stgit@harusame> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-21x86, instruction decoder: Fix test_get_len build rulesIngo Molnar
Add the kernel source include file as well to the include files search path, to fix this build bug: In file included from arch/x86/tools/test_get_len.c:28: arch/x86/lib/insn.c:21:26: error: linux/string.h: No such file or directory Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: systemtap<systemtap@sources.redhat.com> Cc: DLE <dle-develop@lists.sourceforge.net> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20091020165531.4145.21872.stgit@dhcp-100-2-132.bos.redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-04x86: Remove unused config macros from instruction decoder selftestMasami Hiramatsu
Remove dummy definitions of CONFIG_X86_64 and CONFIG_X86_32 because those macros are not used in the instruction decoder anymore. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20090828221326.8778.70723.stgit@localhost.localdomain> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2009-09-04x86: Allow x86-32 instruction decoder selftest on x86-64Masami Hiramatsu
Pass $(CONFIG_64BIT) to the x86 insn decoder selftest in case we are decoding 32bit code on x86-64, which will happen when building kernel with ARCH=i386 on x86-64. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20090828221319.8778.88508.stgit@localhost.localdomain> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2009-08-27x86: Check awk features before generating inat-tables.cMasami Hiramatsu
Check some awk mandatory features to generate inat-tables.c that old mawk doesn't support. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Avi Kivity <avi@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Przemysław Pawełczyk <przemyslaw@pawelczyk.it> Cc: Roland McGrath <roland@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> LKML-Reference: <20090821194316.12478.57394.stgit@localhost.localdomain> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2009-08-27x86: Fix x86 instruction decoder selftest to check only .textMasami Hiramatsu
Fix x86 instruction decoder selftest to check only .text because other sections (e.g. .notes) will have random bytes which don't need to be checked. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Avi Kivity <avi@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Przemysław Pawełczyk <przemyslaw@pawelczyk.it> Cc: Roland McGrath <roland@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> LKML-Reference: <20090821194307.12478.76938.stgit@localhost.localdomain> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
2009-08-27x86: X86 instruction decoder build-time selftestMasami Hiramatsu
Add a user-space selftest of x86 instruction decoder at kernel build time. When CONFIG_X86_DECODER_SELFTEST=y, Kbuild builds a test harness of x86 instruction decoder and performs it after building vmlinux. The test compares the results of objdump and x86 instruction decoder code and check there are no differences. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Avi Kivity <avi@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Przemysław Pawełczyk <przemyslaw@pawelczyk.it> Cc: Roland McGrath <roland@redhat.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Vegard Nossum <vegard.nossum@gmail.com> LKML-Reference: <20090813203421.31965.29006.stgit@localhost.localdomain> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 18:31:31 +0000