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2018-04-15Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Thomas Gleixner: "A set of fixes and updates for x86: - Address a swiotlb regression which was caused by the recent DMA rework and made driver fail because dma_direct_supported() returned false - Fix a signedness bug in the APIC ID validation which caused invalid APIC IDs to be detected as valid thereby bloating the CPU possible space. - Fix inconsisten config dependcy/select magic for the MFD_CS5535 driver. - Fix a corruption of the physical address space bits when encryption has reduced the address space and late cpuinfo updates overwrite the reduced bit information with the original value. - Dominiks syscall rework which consolidates the architecture specific syscall functions so all syscalls can be wrapped with the same macros. This allows to switch x86/64 to struct pt_regs based syscalls. Extend the clearing of user space controlled registers in the entry patch to the lower registers" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic: Fix signedness bug in APIC ID validity checks x86/cpu: Prevent cpuinfo_x86::x86_phys_bits adjustment corruption x86/olpc: Fix inconsistent MFD_CS5535 configuration swiotlb: Use dma_direct_supported() for swiotlb_ops syscalls/x86: Adapt syscall_wrapper.h to the new syscall stub naming convention syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*() syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention syscalls/core, syscalls/x86: Clean up syscall stub naming convention syscalls/x86: Extend register clearing on syscall entry to lower registers syscalls/x86: Unconditionally enable 'struct pt_regs' based syscalls on x86_64 syscalls/x86: Use 'struct pt_regs' based syscall calling for IA32_EMULATION and x32 syscalls/core: Prepare CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y for compat syscalls syscalls/x86: Use 'struct pt_regs' based syscall calling convention for 64-bit syscalls syscalls/core: Introduce CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y x86/syscalls: Don't pointlessly reload the system call number x86/mm: Fix documentation of module mapping range with 4-level paging x86/cpuid: Switch to 'static const' specifier
2018-04-12Merge tag 'asm-generic' of ↵Linus Torvalds2-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic fixes from Arnd Bergmann: "I have one regression fix for a minor build problem after the architecture removal series, plus a rework of the barriers in the readl/writel functions, thanks to work by Sinan Kaya: This started from a discussion on the linuxpcc and rdma mailing lists[1]. To summarize, we decided that architectures are responsible to serialize readl() and writel() accesses on a device MMIO space relative to DMA performed by that device. This series provides a pessimistic implementation of that behavior for asm-generic/io.h, which is in turn used by a number of architectures (h8300, microblaze, nios2, openrisc, s390, sparc, um, unicore32, and xtensa). Some of those presumably need no extra barriers, or something weaker than rmb()/wmb(), and they are advised to override the new default for better performance. For inb()/outb(), the same barriers are used, but architectures might want to add another barrier to outb() here if that can guarantee non-posted behavior (some architectures can, others cannot do that). The readl_relaxed()/writel_relaxed() family of functions retains the existing behavior with no extra barriers" [1] https://lists.ozlabs.org/pipermail/linuxppc-dev/2018-March/170481.html * tag 'asm-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: io: change writeX_relaxed() to remove barriers io: change readX_relaxed() to remove barriers dts: remove cris & metag dts hard link file io: change inX() to have their own IO barrier overrides io: change outX() to have their own IO barrier overrides io: define stronger ordering for the default writeX() implementation io: define stronger ordering for the default readX() implementation io: define several IO & PIO barrier types for the asm-generic version
2018-04-11checkpatch: whinge about bool bitfieldsJoe Perches1-0/+6
Using bool in a bitfield isn't a good idea as the alignment behavior is arch implementation defined. Suggest using unsigned int or u<8|16|32> instead. Link: http://lkml.kernel.org/r/e22fb871b1b7f2fda4b22f3a24e0d7f092eb612c.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: allow space between colon and bracketHeinrich Schuchardt1-1/+1
Allow a space between a colon and subsequent opening bracket. This sequence may occur in inline assembler statements like asm( "ldr %[out], [%[in]]\n\t" : [out] "=r" (ret) : [in] "r" (addr) ); Link: http://lkml.kernel.org/r/20180403191655.23700-1-xypron.glpk@gmx.de Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: add test for assignment at start of lineJoe Perches1-0/+6
Kernel style seems to prefer line wrapping an assignment with the assignment operator on the previous line like: <leading tabs> identifier = expression; over <leading tabs> identifier = expression; somewhere around a 50:1 ratio $ git grep -P "[^=]=\s*$" -- "*.[ch]" | wc -l 52008 $ git grep -P "^\s+[\*\/\+\|\%\-]?=[^=>]" | wc -l 1161 So add a --strict test for that condition. Link: http://lkml.kernel.org/r/1522275726.2210.12.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: test SYMBOLIC_PERMS multiple times per lineJoe Perches1-1/+1
There are occasions where symbolic perms are used in a ternary like return (channel == 0) ? S_IRUGO | S_IWUSR : S_IRUGO; The current test will find the first use "S_IRUGO | S_IWUSR" but not the second use "S_IRUGO" on the same line. Improve the test to look for all instances on a line. Link: http://lkml.kernel.org/r/1522127944.12357.49.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: two spelling fixesClaudio Fontana1-1/+1
completly -> completely wacking -> whacking Link: http://lkml.kernel.org/r/1520405394-5586-1-git-send-email-claudio.fontana@gliwa.com Signed-off-by: Claudio Fontana <claudio.fontana@gliwa.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: improve get_quoted_string for TRACE_EVENT macrosJoe Perches1-1/+2
The get_quoted_string function does not expect invalid arguments. The $stat test can return non-statements for complicated macros like TRACE_EVENT. Allow the $stat block and test for vsprintf misuses to exceed the actual block length and possibly test invalid lines by validating the arguments of get_quoted_string. Return "" if either get_quoted_string argument is undefined. Miscellanea: o Properly align the comment for the vsprintf extension test Link: http://lkml.kernel.org/r/9e9725342ca3dfc0f5e3e0b8ca3c482b0e5712cc.1520356392.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: warn for use of %pxTobin C. Harding1-16/+32
Usage of the new %px specifier potentially leaks sensitive information. Printing kernel addresses exposes the kernel layout in memory, this is potentially exploitable. We have tools in the kernel to help us do the right thing. We can have checkpatch warn developers of potential dangers of using %px. Have checkpatch emit a warning for usage of specifier %px. Link: http://lkml.kernel.org/r/1519700648-23108-5-git-send-email-me@tobin.cc Signed-off-by: Tobin C. Harding <me@tobin.cc> Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: add sub routine get_stat_here()Tobin C. Harding1-32/+20
checkpatch currently contains duplicate code. We can define a sub routine and call that instead. This reduces code duplication and line count. Add subroutine get_stat_here(). Link: http://lkml.kernel.org/r/1519700648-23108-4-git-send-email-me@tobin.cc Signed-off-by: Tobin C. Harding <me@tobin.cc> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: remove unused variable declarationsTobin C. Harding1-2/+0
Variables are declared and not used, we should remove them. Link: http://lkml.kernel.org/r/1519700648-23108-3-git-send-email-me@tobin.cc Signed-off-by: Tobin C. Harding <me@tobin.cc> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: add sub routine get_stat_real()Tobin C. Harding1-16/+16
checkpatch currently contains duplicate code. We can define a sub routine and call that instead. This reduces code duplication and line count. Add subroutine get_stat_real() Link: http://lkml.kernel.org/r/1519700648-23108-2-git-send-email-me@tobin.cc Signed-off-by: Tobin C. Harding <me@tobin.cc> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: add Crypto ON_STACK to declaration_macrosGilad Ben-Yossef1-1/+2
Add the crypto API *_ON_STACK to $declaration_macros. Resolves the following false warning: WARNING: Missing a blank line after declarations + int err; + SHASH_DESC_ON_STACK(desc, ctx_p->shash_tfm); Link: http://lkml.kernel.org/r/1518941636-4484-1-git-send-email-gilad@benyossef.com Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch.pl: add SPDX license tag checkRob Herring1-0/+27
Add SPDX license tag check based on the rules defined in Documentation/process/license-rules.rst. To summarize, SPDX license tags should be on the 1st line (or 2nd line in scripts) using the appropriate comment style for the file type. Link: http://lkml.kernel.org/r/20180202154026.15298-1-robh@kernel.org Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Philippe Ombredanne <pombredanne@nexb.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Joe Perches <joe@perches.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Igor Stoppa <igor.stoppa@huawei.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-11checkpatch: improve parse_email signature checkingJoe Perches1-1/+1
Bare email addresses with non alphanumeric characters require escape quoting before being substituted in the parse_email routine. e.g. Reported-by: syzbot+bbd8e9a06452cc48059b@syzkaller.appspotmail.com Do so. Link: http://lkml.kernel.org/r/1518631805.3678.12.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-09syscalls/core, syscalls/x86: Clean up compat syscall stub naming conventionDominik Brodowski1-1/+1
Tidy the naming convention for compat syscall subs. Hints which describe the purpose of the stub go in front and receive a double underscore to denote that they are generated on-the-fly by the COMPAT_SYSCALL_DEFINEx() macro. For the generic case, this means: t kernel_waitid # common C function (see kernel/exit.c) __do_compat_sys_waitid # inlined helper doing the actual work # (takes original parameters as declared) T __se_compat_sys_waitid # sign-extending C function calling inlined # helper (takes parameters of type long, # casts them to unsigned long and then to # the declared type) T compat_sys_waitid # alias to __se_compat_sys_waitid() # (taking parameters as declared), to # be included in syscall table For x86, the naming is as follows: t kernel_waitid # common C function (see kernel/exit.c) __do_compat_sys_waitid # inlined helper doing the actual work # (takes original parameters as declared) t __se_compat_sys_waitid # sign-extending C function calling inlined # helper (takes parameters of type long, # casts them to unsigned long and then to # the declared type) T __ia32_compat_sys_waitid # IA32_EMULATION 32-bit-ptregs -> C stub, # calls __se_compat_sys_waitid(); to be # included in syscall table T __x32_compat_sys_waitid # x32 64-bit-ptregs -> C stub, calls # __se_compat_sys_waitid(); to be included # in syscall table If only one of IA32_EMULATION and x32 is enabled, __se_compat_sys_waitid() may be inlined into the stub __{ia32,x32}_compat_sys_waitid(). Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20180409105145.5364-3-linux@dominikbrodowski.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-04-09syscalls/core, syscalls/x86: Clean up syscall stub naming conventionDominik Brodowski1-1/+1
Tidy the naming convention for compat syscall subs. Hints which describe the purpose of the stub go in front and receive a double underscore to denote that they are generated on-the-fly by the SYSCALL_DEFINEx() macro. For the generic case, this means (0xffffffff prefix removed): 810f08d0 t kernel_waitid # common C function (see kernel/exit.c) <inline> __do_sys_waitid # inlined helper doing the actual work # (takes original parameters as declared) 810f1aa0 T __se_sys_waitid # sign-extending C function calling inlined # helper (takes parameters of type long; # casts them to the declared type) 810f1aa0 T sys_waitid # alias to __se_sys_waitid() (taking # parameters as declared), to be included # in syscall table For x86, the naming is as follows: 810efc70 t kernel_waitid # common C function (see kernel/exit.c) <inline> __do_sys_waitid # inlined helper doing the actual work # (takes original parameters as declared) 810efd60 t __se_sys_waitid # sign-extending C function calling inlined # helper (takes parameters of type long; # casts them to the declared type) 810f1140 T __ia32_sys_waitid # IA32_EMULATION 32-bit-ptregs -> C stub, # calls __se_sys_waitid(); to be included # in syscall table 810f1110 T sys_waitid # x86 64-bit-ptregs -> C stub, calls # __se_sys_waitid(); to be included in # syscall table For x86, sys_waitid() will be re-named to __x64_sys_waitid in a follow-up patch. Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20180409105145.5364-2-linux@dominikbrodowski.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-04-07Merge tag 'leaks-4.17-rc1' of ↵Linus Torvalds1-113/+259
git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks Pull leaking-addresses updates from Tobin Harding: "This set represents improvements to the scripts/leaking_addresses.pl script. The major improvement is that with this set applied the script actually runs in a reasonable amount of time (less than a minute on a standard stock Ubuntu user desktop). Also, we have a second maintainer now and a tree hosted on kernel.org We do a few code clean ups. We fix the command help output. Handling of the vsyscall address range is fixed to check the whole range instead of just the start/end addresses. We add support for 5 page table levels (suggested on LKML). We use a system command to get the machine architecture instead of using Perl. Calling this command for every regex comparison is what previously choked the script, caching the result of this call gave the major speed improvement. We add support for scanning 32-bit kernels using the user/kernel memory split. Path skipping code refactored and simplified (meaning easier script configuration). We remove version numbering. We add a variable name to improve readability of a regex and finally we check filenames for leaking addresses. Currently script scans /proc/PID for all PID. With this set applied we only scan for PID==1. It was observed that on an idle system files under /proc/PID are predominantly the same for all processes. Also it was noted that the script does not scan _all_ the kernel since it only scans active processes. Scanning only for PID==1 makes explicit the inherent flaw in the script that the scan is only partial and also speeds things up" * tag 'leaks-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks: MAINTAINERS: Update LEAKING_ADDRESSES leaking_addresses: check if file name contains address leaking_addresses: explicitly name variable used in regex leaking_addresses: remove version number leaking_addresses: skip '/proc/1/syscall' leaking_addresses: skip all /proc/PID except /proc/1 leaking_addresses: cache architecture name leaking_addresses: simplify path skipping leaking_addresses: do not parse binary files leaking_addresses: add 32-bit support leaking_addresses: add is_arch() wrapper subroutine leaking_addresses: use system command to get arch leaking_addresses: add support for 5 page table levels leaking_addresses: add support for kernel config file leaking_addresses: add range check for vsyscall memory leaking_addresses: indent dependant options leaking_addresses: remove command examples leaking_addresses: remove mention of kptr_restrict leaking_addresses: fix typo function not called
2018-04-07Merge branch 'next-general' of ↵Linus Torvalds1-2/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull general security layer updates from James Morris: - Convert security hooks from list to hlist, a nice cleanup, saving about 50% of space, from Sargun Dhillon. - Only pass the cred, not the secid, to kill_pid_info_as_cred and security_task_kill (as the secid can be determined from the cred), from Stephen Smalley. - Close a potential race in kernel_read_file(), by making the file unwritable before calling the LSM check (vs after), from Kees Cook. * 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: security: convert security hooks to use hlist exec: Set file unwritable before LSM check usb, signal, security: only pass the cred, not the secid, to kill_pid_info_as_cred and security_task_kill
2018-04-07leaking_addresses: check if file name contains addressTobin C. Harding1-0/+12
Sometimes files may be created by using output from printk. As the scan traverses the directory tree we should parse each path name and check if it is leaking an address. Add check for leaking address on each path name. Suggested-by: Tycho Andersen <tycho@tycho.ws> Acked-by: Tycho Andersen <tycho@tycho.ws> Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: explicitly name variable used in regexTobin C. Harding1-1/+1
Currently sub routine may_leak_address() is checking regex against Perl special variable $_ which is _fortunately_ being set correctly in a loop before this sub routine is called. We already have declared a variable to hold this value '$line' we should use it. Use $line in regex match instead of implicit $_ Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: remove version numberTobin C. Harding1-2/+0
We have git now, we don't need a version number. This was originally added because leaking_addresses.pl shamelessly (and mindlessly) copied checkpatch.pl Remove version number from script. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: skip '/proc/1/syscall'Tobin C. Harding1-0/+1
The pointers listed in /proc/1/syscall are user pointers, and negative syscall args will show up like kernel addresses. For example /proc/31808/syscall: 0 0x3 0x55b107a38180 0x2000 0xffffffffffffffb0 \ 0x55b107a302d0 0x55b107a38180 0x7fffa313b8e8 0x7ff098560d11 Skip parsing /proc/1/syscall Suggested-by: Tycho Andersen <tycho@tycho.ws> Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: skip all /proc/PID except /proc/1Tobin C. Harding1-0/+12
When the system is idle it is likely that most files under /proc/PID will be identical for various processes. Scanning _all_ the PIDs under /proc is unnecessary and implies that we are thoroughly scanning /proc. This is _not_ the case because there may be ways userspace can trigger creation of /proc files that leak addresses but were not present during a scan. For these two reasons we should exclude all PID directories under /proc except '1/' Exclude all /proc/PID except /proc/1. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: cache architecture nameTobin C. Harding1-3/+5
Currently we are repeatedly calling `uname -m`. This is causing the script to take a long time to run (more than 10 seconds to parse /proc/kallsyms). We can use Perl state variables to cache the result of the first call to `uname -m`. With this change in place the script scans the whole kernel in under a minute. Cache machine architecture in state variable. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: simplify path skippingTobin C. Harding1-61/+29
Currently script has multiple configuration arrays. This is confusing, evident by the fact that a bunch of the entries are in the wrong place. We can simplify the code by just having a single array for absolute paths to skip and a single array for file names to skip wherever they appear in the scanned directory tree. There are also currently multiple subroutines to handle the different arrays, we can reduce these to a single subroutine also. Simplify the path skipping code. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: do not parse binary filesTobin C. Harding1-0/+4
Currently script parses binary files. Since we are scanning for readable kernel addresses there is no need to parse binary files. We can use Perl to check if file is binary and skip parsing it if so. Do not parse binary files. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: add 32-bit supportTobin C. Harding1-11/+82
Currently script only supports x86_64 and ppc64. It would be nice to be able to scan 32-bit machines also. We can add support for 32-bit architectures by modifying how we check for false positives, taking advantage of the page offset used by the kernel, and using the correct regular expression. Support for 32-bit machines is enabled by the observation that the kernel addresses on 32-bit machines are larger [in value] than the page offset. We can use this to filter false positives when scanning the kernel for leaking addresses. Programmatic determination of the running architecture is not immediately obvious (current 32-bit machines return various strings from `uname -m`). We therefore provide a flag to enable scanning of 32-bit kernels. Also we can check the kernel config file for the offset and if not found default to 0xc0000000. A command line option to parse in the page offset is also provided. We do automatically detect architecture if running on ix86. Add support for 32-bit kernels. Add a command line option for page offset. Suggested-by: Kaiwan N Billimoria <kaiwan.billimoria@gmail.com> Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: add is_arch() wrapper subroutineTobin C. Harding1-12/+14
Currently there is duplicate code when checking the architecture type. We can remove the duplication by implementing a wrapper function is_arch(). Implement and use wrapper function is_arch(). Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: use system command to get archTobin C. Harding1-6/+6
Currently script uses Perl to get the machine architecture. This can be erroneous since Perl uses the architecture of the machine that Perl was compiled on not the architecture of the running machine. We should use the systems `uname` command instead. Use `uname -m` instead of Perl to get the machine architecture. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: add support for 5 page table levelsTobin C. Harding1-7/+25
Currently script only supports 4 page table levels because of the way the kernel address regular expression is crafted. We can do better than this. Using previously added support for kernel configuration options we can get the number of page table levels defined by CONFIG_PGTABLE_LEVELS. Using this value a correct regular expression can be crafted. This only supports 5 page tables on x86_64. Add support for 5 page table levels on x86_64. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: add support for kernel config fileTobin C. Harding1-1/+65
Features that rely on the ability to get kernel configuration options are ready to be implemented in script. In preparation for this we can add support for kernel config options as a separate patch to ease review. Add support for locating and parsing kernel configuration file. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: add range check for vsyscall memoryTobin C. Harding1-6/+14
Currently script checks only first and last address in the vsyscall memory range. We can do better than this. When checking for false positives against $match, we can convert $match to a hexadecimal value then check if it lies within the range of vsyscall addresses. Check whole range of vsyscall addresses when checking for false positive. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: indent dependant optionsTobin C. Harding1-8/+8
A number of the command line options to script are dependant on the option --input-raw being set. If we indent these options it makes explicit this dependency. Indent options dependant on --input-raw. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: remove command examplesTobin C. Harding1-11/+0
Currently help output includes command examples. These were cute when we first started development of this script but are unnecessary. Remove command examples. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: remove mention of kptr_restrictTobin C. Harding1-3/+0
leaking_addresses.pl can be run with kptr_restrict==0 now, we don't need the comment about setting kptr_restrict any more. Remove comment suggesting setting kptr_restrict. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-07leaking_addresses: fix typo function not calledTobin C. Harding1-1/+1
Currently code uses a check against an undefined variable because the variable is a sub routine name and is not evaluated. Evaluate subroutine; add parenthesis to sub routine name. Signed-off-by: Tobin C. Harding <me@tobin.cc>
2018-04-06Merge branch 'akpm' (patches from Andrew)Linus Torvalds1-1/+11
Merge updates from Andrew Morton: - a few misc things - ocfs2 updates - the v9fs maintainers have been missing for a long time. I've taken over v9fs patch slinging. - most of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (116 commits) mm,oom_reaper: check for MMF_OOM_SKIP before complaining mm/ksm: fix interaction with THP mm/memblock.c: cast constant ULLONG_MAX to phys_addr_t headers: untangle kmemleak.h from mm.h include/linux/mmdebug.h: make VM_WARN* non-rvals mm/page_isolation.c: make start_isolate_page_range() fail if already isolated mm: change return type to vm_fault_t mm, oom: remove 3% bonus for CAP_SYS_ADMIN processes mm, page_alloc: wakeup kcompactd even if kswapd cannot free more memory kernel/fork.c: detect early free of a live mm mm: make counting of list_lru_one::nr_items lockless mm/swap_state.c: make bool enable_vma_readahead and swap_vma_readahead() static block_invalidatepage(): only release page if the full page was invalidated mm: kernel-doc: add missing parameter descriptions mm/swap.c: remove @cold parameter description for release_pages() mm/nommu: remove description of alloc_vm_area zram: drop max_zpage_size and use zs_huge_class_size() zsmalloc: introduce zs_huge_class_size() mm: fix races between swapoff and flush dcache fs/direct-io.c: minor cleanups in do_blockdev_direct_IO ...
2018-04-06dts: remove cris & metag dts hard link fileLiu, Changcheng2-2/+0
arch cris & metag have been removed from supported archs. The dts hard link files should also be removed, or the ctags tool will give warning. execute"ctags -R", output: ctags: Warning: cannot open source file "scripts/dtc/include-prefixes/cris" : No such file or directory ctags: Warning: cannot open source file "scripts/dtc/include-prefixes/metag" : No such file or directory Signed-off-by: Liu Changcheng <changcheng.liu@intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-04-05scripts/faddr2line: show the code contextChangbin Du1-1/+11
Inspired by gdb command 'list', show the code context of target lines. Here is a example: $ scripts/faddr2line vmlinux native_write_msr+0x6 native_write_msr+0x6/0x20: arch_static_branch at arch/x86/include/asm/msr.h:105 100 return EAX_EDX_VAL(val, low, high); 101 } 102 103 static inline void notrace __wrmsr(unsigned int msr, u32 low, u32 high) 104 { 105 asm volatile("1: wrmsr\n" 106 "2:\n" 107 _ASM_EXTABLE_HANDLE(1b, 2b, ex_handler_wrmsr_unsafe) 108 : : "c" (msr), "a"(low), "d" (high) : "memory"); 109 } 110 (inlined by) static_key_false at include/linux/jump_label.h:142 137 #define JUMP_TYPE_LINKED 2UL 138 #define JUMP_TYPE_MASK 3UL 139 140 static __always_inline bool static_key_false(struct static_key *key) 141 { 142 return arch_static_branch(key, false); 143 } 144 145 static __always_inline bool static_key_true(struct static_key *key) 146 { 147 return !arch_static_branch(key, true); (inlined by) native_write_msr at arch/x86/include/asm/msr.h:150 145 static inline void notrace 146 native_write_msr(unsigned int msr, u32 low, u32 high) 147 { 148 __wrmsr(msr, low, high); 149 150 if (msr_tracepoint_active(__tracepoint_write_msr)) 151 do_trace_write_msr(msr, ((u64)high << 32 | low), 0); 152 } 153 154 /* Can be uninlined because referenced by paravirt */ 155 static inline int notrace Link: http://lkml.kernel.org/r/1521444205-2259-1-git-send-email-changbin.du@intel.com Signed-off-by: Changbin Du <changbin.du@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: NeilBrown <neilb@suse.com> Cc: Richard Weinberger <richard@nod.at> Cc: Kate Stewart <kstewart@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-04-05Merge tag 'devicetree-for-4.17' of ↵Linus Torvalds26-5035/+628
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree updates from Rob Herring: - Sync dtc to upstream version v1.4.6-9-gaadd0b65c987. This adds a bunch more warnings (hidden behind W=1). - Build dtc lexer and parser files instead of using shipped versions. - Rework overlay apply API to take an FDT as input and apply overlays in a single step. - Add a phandle lookup cache. This improves boot time by hundreds of msec on systems with large DT. - Add trivial mcp4017/18/19 potentiometers bindings. - Remove VLA stack usage in DT code. * tag 'devicetree-for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (26 commits) of: unittest: fix an error code in of_unittest_apply_overlay() of: unittest: move misplaced function declaration of: unittest: Remove VLA stack usage of: overlay: Fix forgotten reference to of_overlay_apply() of: Documentation: Fix forgotten reference to of_overlay_apply() of: unittest: local return value variable related cleanups of: unittest: remove unneeded local return value variables dt-bindings: trivial: add various mcp4017/18/19 potentiometers of: unittest: fix an error test in of_unittest_overlay_8() of: cache phandle nodes to reduce cost of of_find_node_by_phandle() dt-bindings: rockchip-dw-mshc: use consistent clock names MAINTAINERS: Add linux/of_*.h headers to appropriate subsystems scripts: turn off some new dtc warnings by default scripts/dtc: Update to upstream version v1.4.6-9-gaadd0b65c987 scripts/dtc: generate lexer and parser during build instead of shipping powerpc: boot: add strrchr function of: overlay: do not include path in full_name of added nodes of: unittest: clean up changeset test arm64/efi: Make strrchr() available to the EFI namespace ARM: boot: add strrchr function ...
2018-04-04Merge tag 'riscv-for-linus-4.17-mw0' of ↵Linus Torvalds1-0/+5
git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux Pull RISC-V updates from Palmer Dabbelt: "This contains the new features we'd like to incorporate into the RISC-V port for 4.17. We might have a bit more stuff land later in the merge window, but I wanted to get this out earlier just so everyone can see where we currently stand. A short summary of the changes is: - We've added support for dynamic ftrace on RISC-V targets. - There have been a handful of cleanups to our atomic and locking routines. They now more closely match the released RISC-V memory model draft. - Our module loading support has been cleaned up and is now enabled by default, despite some limitations still existing. - A patch to define COMMANDLINE_FORCE instead of COMMANDLINE_OVERRIDE so the generic device tree code picks up handling all our command line stuff. There's more information in the merge commits for each patch set" * tag 'riscv-for-linus-4.17-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux: (21 commits) RISC-V: Rename CONFIG_CMDLINE_OVERRIDE to CONFIG_CMDLINE_FORCE RISC-V: Add definition of relocation types RISC-V: Enable module support in defconfig RISC-V: Support SUB32 relocation type in kernel module RISC-V: Support ADD32 relocation type in kernel module RISC-V: Support ALIGN relocation type in kernel module RISC-V: Support RVC_BRANCH/JUMP relocation type in kernel modulewq RISC-V: Support HI20/LO12_I/LO12_S relocation type in kernel module RISC-V: Support CALL relocation type in kernel module RISC-V: Support GOT_HI20/CALL_PLT relocation type in kernel module RISC-V: Add section of GOT.PLT for kernel module RISC-V: Add sections of PLT and GOT for kernel module riscv/atomic: Strengthen implementations with fences riscv/spinlock: Strengthen implementations with fences riscv/barrier: Define __smp_{store_release,load_acquire} riscv/ftrace: Add HAVE_FUNCTION_GRAPH_RET_ADDR_PTR support riscv/ftrace: Add DYNAMIC_FTRACE_WITH_REGS support riscv/ftrace: Add ARCH_SUPPORTS_FTRACE_OPS support riscv/ftrace: Add dynamic function graph tracer support riscv/ftrace: Add dynamic function tracer support ...
2018-04-04Merge tag 'arm64-upstream' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 updates from Will Deacon: "Nothing particularly stands out here, probably because people were tied up with spectre/meltdown stuff last time around. Still, the main pieces are: - Rework of our CPU features framework so that we can whitelist CPUs that don't require kpti even in a heterogeneous system - Support for the IDC/DIC architecture extensions, which allow us to elide instruction and data cache maintenance when writing out instructions - Removal of the large memory model which resulted in suboptimal codegen by the compiler and increased the use of literal pools, which could potentially be used as ROP gadgets since they are mapped as executable - Rework of forced signal delivery so that the siginfo_t is well-formed and handling of show_unhandled_signals is consolidated and made consistent between different fault types - More siginfo cleanup based on the initial patches from Eric Biederman - Workaround for Cortex-A55 erratum #1024718 - Some small ACPI IORT updates and cleanups from Lorenzo Pieralisi - Misc cleanups and non-critical fixes" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (70 commits) arm64: uaccess: Fix omissions from usercopy whitelist arm64: fpsimd: Split cpu field out from struct fpsimd_state arm64: tlbflush: avoid writing RES0 bits arm64: cmpxchg: Include linux/compiler.h in asm/cmpxchg.h arm64: move percpu cmpxchg implementation from cmpxchg.h to percpu.h arm64: cmpxchg: Include build_bug.h instead of bug.h for BUILD_BUG arm64: lse: Include compiler_types.h and export.h for out-of-line LL/SC arm64: fpsimd: include <linux/init.h> in fpsimd.h drivers/perf: arm_pmu_platform: do not warn about affinity on uniprocessor perf: arm_spe: include linux/vmalloc.h for vmap() Revert "arm64: Revert L1_CACHE_SHIFT back to 6 (64-byte cache line size)" arm64: cpufeature: Avoid warnings due to unused symbols arm64: Add work around for Arm Cortex-A55 Erratum 1024718 arm64: Delay enabling hardware DBM feature arm64: Add MIDR encoding for Arm Cortex-A55 and Cortex-A35 arm64: capabilities: Handle shared entries arm64: capabilities: Add support for checks based on a list of MIDRs arm64: Add helpers for checking CPU MIDR against a range arm64: capabilities: Clean up midr range helpers arm64: capabilities: Change scope of VHE to Boot CPU feature ...
2018-04-03Merge tag 'kconfig-v4.17' of ↵Linus Torvalds55-135/+1037
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kconfig updates from Masahiro Yamada: - improve checkpatch for more precise Kconfig code checking - clarify effective selects by grouping reverse dependencies in help - do not write out '# CONFIG_FOO is not set' from invisible symbols - make oldconfig as silent as it should be - rename 'silentoldconfig' to 'syncconfig' - add unit-test framework and several test cases - warn unmet dependency of tristate symbols - make unmet dependency warnings readable, removing false positives - improve recursive include detection - use yylineno to simplify the line number tracking - misc cleanups * tag 'kconfig-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (30 commits) kconfig: use yylineno option instead of manual lineno increments kconfig: detect recursive inclusion earlier kconfig: remove duplicated file name and lineno of recursive inclusion kconfig: do not include both curses.h and ncurses.h for nconfig kconfig: make unmet dependency warnings readable kconfig: warn unmet direct dependency of tristate symbols selected by y kconfig: tests: test if recursive inclusion is detected kconfig: tests: test if recursive dependencies are detected kconfig: tests: test randconfig for choice in choice kconfig: tests: test defconfig when two choices interact kconfig: tests: check visibility of tristate choice values in y choice kconfig: tests: check unneeded "is not set" with unmet dependency kconfig: tests: test if new symbols in choice are asked kconfig: tests: test automatic submenu creation kconfig: tests: add basic choice tests kconfig: tests: add framework for Kconfig unit testing kbuild: add PYTHON2 and PYTHON3 variables kconfig: remove redundant streamline_config.pl prerequisite kconfig: rename silentoldconfig to syncconfig kconfig: invoke oldconfig instead of silentoldconfig from local*config ...
2018-04-03Merge tag 'kbuild-v4.17' of ↵Linus Torvalds12-181/+142
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - add a shell script to get Clang version - improve portability of build scripts - drop always-enabled CONFIG_THIN_ARCHIVE and remove unused code - rename built-in.o which is now thin archive to built-in.a - process clean/build targets one by one to get along with -j option - simplify ld-option - improve building with CONFIG_TRIM_UNUSED_KSYMS - define KBUILD_MODNAME even for objects shared among multiple modules - avoid linking multiple instances of same objects from composite objects - move <linux/compiler_types.h> to c_flags to include it only for C files - clean-up various Makefiles * tag 'kbuild-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (29 commits) kbuild: get <linux/compiler_types.h> out of <linux/kconfig.h> kbuild: clean up link rule of composite modules kbuild: clean up archive rule of built-in.a kbuild: remove partial section mismatch detection for built-in.a net: liquidio: clean up Makefile for simpler composite object handling lib: zstd: clean up Makefile for simpler composite object handling kbuild: link $(real-obj-y) instead of $(obj-y) into built-in.a kbuild: rename real-objs-y/m to real-obj-y/m kbuild: move modname and modname-multi close to modname_flags kbuild: simplify modname calculation kbuild: fix modname for composite modules kbuild: define KBUILD_MODNAME even if multiple modules share objects kbuild: remove unnecessary $(subst $(obj)/, , ...) in modname-multi kbuild: Use ls(1) instead of stat(1) to obtain file size kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS kbuild: move include/config/ksym/* to include/ksym/* kbuild: move CONFIG_TRIM_UNUSED_KSYMS code unneeded for external module kbuild: restore autoksyms.h touch to the top Makefile kbuild: move 'scripts' target below kbuild: remove wrong 'touch' in adjust_autoksyms.sh ...
2018-04-03Merge tag 'docs-4.17' of git://git.lwn.net/linuxLinus Torvalds2-303/+396
Pull documentation updates from Jonathan Corbet: "There's been a fair amount of activity in Documentation/ this time around: - Lots of work aligning Documentation/ABI with reality, done by Aishwarya Pant. - The trace documentation has been converted to RST by Changbin Du - I thrashed up kernel-doc to deal with a parsing issue and to try to make the code more readable. It's still a 20+-year-old Perl hack, though. - Lots of other updates, typo fixes, and more" * tag 'docs-4.17' of git://git.lwn.net/linux: (82 commits) Documentation/process: update FUSE project website docs: kernel-doc: fix parsing of arrays dmaengine: Fix spelling for parenthesis in dmatest documentation dmaengine: Make dmatest.rst indeed reST compatible dmaengine: Add note to dmatest documentation about supported channels Documentation: magic-numbers: Fix typo Documentation: admin-guide: add kvmconfig, xenconfig and tinyconfig commands Input: alps - Update documentation for trackstick v3 format Documentation: Mention why %p prints ptrval COPYING: use the new text with points to the license files COPYING: create a new file with points to the Kernel license files Input: trackpoint: document sysfs interface xfs: Change URL for the project in xfs.txt char/bsr: add sysfs interface documentation acpi: nfit: document sysfs interface block: rbd: update sysfs interface Documentation/sparse: fix typo Documentation/CodingStyle: Add an example for braces docs/vm: update 00-INDEX kernel-doc: Remove __sched markings ...
2018-04-02Merge tag 'arch-removal' of ↵Linus Torvalds5-65/+3
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pul removal of obsolete architecture ports from Arnd Bergmann: "This removes the entire architecture code for blackfin, cris, frv, m32r, metag, mn10300, score, and tile, including the associated device drivers. I have been working with the (former) maintainers for each one to ensure that my interpretation was right and the code is definitely unused in mainline kernels. Many had fond memories of working on the respective ports to start with and getting them included in upstream, but also saw no point in keeping the port alive without any users. In the end, it seems that while the eight architectures are extremely different, they all suffered the same fate: There was one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem, which was more costly than licensing newer off-the-shelf CPU cores from a third party (typically ARM, MIPS, or RISC-V). It seems that all the SoC product lines are still around, but have not used the custom CPU architectures for several years at this point. In contrast, CPU instruction sets that remain popular and have actively maintained kernel ports tend to all be used across multiple licensees. [ See the new nds32 port merged in the previous commit for the next generation of "one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem" - Linus ] The removal came out of a discussion that is now documented at https://lwn.net/Articles/748074/. Unlike the original plans, I'm not marking any ports as deprecated but remove them all at once after I made sure that they are all unused. Some architectures (notably tile, mn10300, and blackfin) are still being shipped in products with old kernels, but those products will never be updated to newer kernel releases. After this series, we still have a few architectures without mainline gcc support: - unicore32 and hexagon both have very outdated gcc releases, but the maintainers promised to work on providing something newer. At least in case of hexagon, this will only be llvm, not gcc. - openrisc, risc-v and nds32 are still in the process of finishing their support or getting it added to mainline gcc in the first place. They all have patched gcc-7.3 ports that work to some degree, but complete upstream support won't happen before gcc-8.1. Csky posted their first kernel patch set last week, their situation will be similar [ Palmer Dabbelt points out that RISC-V support is in mainline gcc since gcc-7, although gcc-7.3.0 is the recommended minimum - Linus ]" This really says it all: 2498 files changed, 95 insertions(+), 467668 deletions(-) * tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits) MAINTAINERS: UNICORE32: Change email account staging: iio: remove iio-trig-bfin-timer driver tty: hvc: remove tile driver tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers serial: remove tile uart driver serial: remove m32r_sio driver serial: remove blackfin drivers serial: remove cris/etrax uart drivers usb: Remove Blackfin references in USB support usb: isp1362: remove blackfin arch glue usb: musb: remove blackfin port usb: host: remove tilegx platform glue pwm: remove pwm-bfin driver i2c: remove bfin-twi driver spi: remove blackfin related host drivers watchdog: remove bfin_wdt driver can: remove bfin_can driver mmc: remove bfin_sdh driver input: misc: remove blackfin rotary driver input: keyboard: remove bf54x driver ...
2018-04-02riscv/ftrace: Add RECORD_MCOUNT supportAlan Kao1-0/+5
Now recordmcount.pl recognizes RISC-V object files. For the mechanism to work, we have to disable the linker relaxation. Cc: Greentime Hu <greentime@andestech.com> Signed-off-by: Alan Kao <alankao@andestech.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2018-04-02Merge tag 'drm-for-v4.17' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds1-10/+0
Pull drm updates from Dave Airlie: "Cannonlake and Vega12 support are probably the two major things. This pull lacks nouveau, Ben had some unforseen leave and a few other blockers so we'll see how things look or maybe leave it for this merge window. core: - Device links to handle sound/gpu pm dependency - Color encoding/range properties - Plane clipping into plane check helper - Backlight helpers - DP TP4 + HBR3 helper support amdgpu: - Vega12 support - Enable DC by default on all supported GPUs - Powerplay restructuring and cleanup - DC bandwidth calc updates - DC backlight on pre-DCE11 - TTM backing store dropping support - SR-IOV fixes - Adding "wattman" like functionality - DC crc support - Improved DC dual-link handling amdkfd: - GPUVM support for dGPU - KFD events for dGPU - Enable PCIe atomics for dGPUs - HSA process eviction support - Live-lock fixes for process eviction - VM page table allocation fix for large-bar systems panel: - Raydium RM68200 - AUO G104SN02 V2 - KEO TX31D200VM0BAA - ARM Versatile panels i915: - Cannonlake support enabled - AUX-F port support added - Icelake base enabling until internal milestone of forcewake support - Query uAPI interface (used for GPU topology information currently) - Compressed framebuffer support for sprites - kmem cache shrinking when GPU is idle - Avoid boosting GPU when waited item is being processed already - Avoid retraining LSPCON link unnecessarily - Decrease request signaling latency - Deprecation of I915_SET_COLORKEY_NONE - Kerneldoc and compiler warning cleanup for upcoming CI enforcements - Full range ycbcr toggling - HDCP support i915/gvt: - Big refactor for shadow ppgtt - KBL context save/restore via LRI cmd (Weinan) - Properly unmap dma for guest page (Changbin) vmwgfx: - Lots of various improvements etnaviv: - Use the drm gpu scheduler - prep work for GC7000L support vc4: - fix alpha blending - Expose perf counters to userspace pl111: - Bandwidth checking/limiting - Versatile panel support sun4i: - A83T HDMI support - A80 support - YUV plane support - H3/H5 HDMI support omapdrm: - HPD support for DVI connector - remove lots of static variables msm: - DSI updates from 10nm / SDM845 - fix for race condition with a3xx/a4xx fence completion irq - some refactoring/prep work for eventual a6xx support (ie. when we have a userspace) - a5xx debugfs enhancements - some mdp5 fixes/cleanups to prepare for eventually merging writeback - support (ie. when we have a userspace) tegra: - mmap() fixes for fbdev devices - Overlay plane for hw cursor fix - dma-buf cache maintenance support mali-dp: - YUV->RGB conversion support rockchip: - rk3399/chromebook fixes and improvements rcar-du: - LVDS support move to drm bridge - DT bindings for R8A77995 - Driver/DT support for R8A77970 tilcdc: - DRM panel support" * tag 'drm-for-v4.17' of git://people.freedesktop.org/~airlied/linux: (1646 commits) drm/i915: Fix hibernation with ACPI S0 target state drm/i915/execlists: Use a locked clear_bit() for synchronisation with interrupt drm/i915: Specify which engines to reset following semaphore/event lockups drm/i915/dp: Write to SET_POWER dpcd to enable MST hub. drm/amdkfd: Use ordered workqueue to restore processes drm/amdgpu: Fix acquiring VM on large-BAR systems drm/amd/pp: clean header file hwmgr.h drm/amd/pp: use mlck_table.count for array loop index limit drm: Fix uabi regression by allowing garbage mode->type from userspace drm/amdgpu: Add an ATPX quirk for hybrid laptop drm/amdgpu: fix spelling mistake: "asssert" -> "assert" drm/amd/pp: Add new asic support in pp_psm.c drm/amd/pp: Clean up powerplay code on Vega12 drm/amd/pp: Add smu irq handlers for legacy asics drm/amd/pp: Fix set wrong temperature range on smu7 drm/amdgpu: Don't change preferred domian when fallback GTT v5 drm/vmwgfx: Bump version patchlevel and date drm/vmwgfx: use monotonic event timestamps drm/vmwgfx: Unpin the screen object backup buffer when not used drm/vmwgfx: Stricter count of legacy surface device resources ...
2018-03-31kbuild: get <linux/compiler_types.h> out of <linux/kconfig.h>Masahiro Yamada1-0/+1
Since commit 28128c61e08e ("kconfig.h: Include compiler types to avoid missed struct attributes"), <linux/kconfig.h> pulls in kernel-space headers to unrelated places. Commit 0f9da844d877 ("MIPS: boot: Define __ASSEMBLY__ for its.S build") suppress the build error by defining __ASSEMBLY__, but ITS (i.e. DTS) is not assembly, and should not include <linux/compiler_types.h> in the first place. Looking at arch/s390/tools/Makefile, host programs gen_facilities and gen_opcode_table now pull in <linux/compiler_types.h> as well. The motivation for that commit was to define necessary attributes before any struct is defined. Obviously, this happens only in C. It is enough to include <linux/compiler_types.h> only when compiling C files, and only when compiling kernel space. Move the include to c_flags. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>