- 08 Mar, 2017 5 commits
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Johannes Thumshirn authored
zram can handle at most SECTORS_PER_PAGE sectors in a bio's bvec. When using the NVMe over Fabrics loopback target which potentially sends a huge bulk of pages attached to the bio's bvec this results in a kernel panic because of array out of bounds accesses in zram_decompress_page(). Signed-off-by:
Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by:
Hannes Reinecke <hare@suse.com> Reviewed-by:
Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by:
Jens Axboe <axboe@fb.com>
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Ming Lei authored
It is obviously that hctx->cpumask is per hctx, and both share same lifetime, so this patch moves freeing of hctx->cpumask into release handler of hctx's kobject. Signed-off-by:
Ming Lei <tom.leiming@gmail.com> Tested-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Jens Axboe <axboe@fb.com>
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Ming Lei authored
This patch removes kobject_put() over hctx in __blk_mq_unregister_dev(), and trys to keep lifetime consistent between hctx and hctx's kobject. Now blk_mq_sysfs_register() and blk_mq_sysfs_unregister() become totally symmetrical, and kobject's refcounter drops to zero just when the hctx is freed. Signed-off-by:
Ming Lei <tom.leiming@gmail.com> Tested-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Jens Axboe <axboe@fb.com>
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Ming Lei authored
Currently from kobject view, both q->mq_kobj and ctx->kobj can be released during one cycle of blk_mq_register_dev() and blk_mq_unregister_dev(). Actually, sw queue's lifetime is same with its request queue's, which is covered by request_queue->kobj. So we don't need to call kobject_put() for the two kinds of kobject in __blk_mq_unregister_dev(), instead we do that in release handler of request queue. Signed-off-by:
Ming Lei <tom.leiming@gmail.com> Tested-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Jens Axboe <axboe@fb.com>
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Ming Lei authored
Both q->mq_kobj and sw queues' kobjects should have been initialized once, instead of doing that each add_disk context. Also this patch removes clearing of ctx in blk_mq_init_cpu_queues() because percpu allocator fills zero to allocated variable. This patch fixes one issue[1] reported from Omar. [1] kernel wearning when doing unbind/bind on one scsi-mq device [ 19.347924] kobject (ffff8800791ea0b8): tried to init an initialized object, something is seriously wrong. [ 19.349781] CPU: 1 PID: 84 Comm: kworker/u8:1 Not tainted 4.10.0-rc7-00210-g53f39eeaa263 #34 [ 19.350686] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.1-20161122_114906-anatol 04/01/2014 [ 19.350920] Workqueue: events_unbound async_run_entry_fn [ 19.350920] Call Trace: [ 19.350920] dump_stack+0x63/0x83 [ 19.350920] kobject_init+0x77/0x90 [ 19.350920] blk_mq_register_dev+0x40/0x130 [ 19.350920] blk_register_queue+0xb6/0x190 [ 19.350920] device_add_disk+0x1ec/0x4b0 [ 19.350920] sd_probe_async+0x10d/0x1c0 [sd_mod] [ 19.350920] async_run_entry_fn+0x48/0x150 [ 19.350920] process_one_work+0x1d0/0x480 [ 19.350920] worker_thread+0x48/0x4e0 [ 19.350920] kthread+0x101/0x140 [ 19.350920] ? process_one_work+0x480/0x480 [ 19.350920] ? kthread_create_on_node+0x60/0x60 [ 19.350920] ret_from_fork+0x2c/0x40 Cc: Omar Sandoval <osandov@osandov.com> Signed-off-by:
Ming Lei <tom.leiming@gmail.com> Tested-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Jens Axboe <axboe@fb.com>
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- 07 Mar, 2017 29 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Misc fixes and minor updates all over the place: - an SGI/UV fix - a defconfig update - a build warning fix - move the boot_params file to the arch location in debugfs - a pkeys fix - selftests fix - boot message fixes - sparse fixes - a resume warning fix - ioapic hotplug fixes - reboot quirks ... plus various minor cleanups" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/build/x86_64_defconfig: Enable CONFIG_R8169 x86/reboot/quirks: Add ASUS EeeBook X205TA/W reboot quirk x86/hpet: Prevent might sleep splat on resume x86/boot: Correct setup_header.start_sys name x86/purgatory: Fix sparse warning, symbol not declared x86/purgatory: Make functions and variables static x86/events: Remove last remnants of old filenames x86/pkeys: Check against max pkey to avoid overflows x86/ioapic: Split IOAPIC hot-removal into two steps x86/PCI: Implement pcibios_release_device to release IRQ from IOAPIC x86/intel_rdt: Remove duplicate inclusion of linux/cpu.h x86/vmware: Remove duplicate inclusion of asm/timer.h x86/hyperv: Hide unused label x86/reboot/quirks: Add ASUS EeeBook X205TA reboot quirk x86/platform/uv/BAU: Fix HUB errors by remove initial write to sw-ack register x86/selftests: Add clobbers for int80 on x86_64 x86/apic: Simplify enable_IR_x2apic(), remove try_to_enable_IR() x86/apic: Fix a warning message in logical CPU IDs allocation x86/kdebugfs: Move boot params hierarchy under (debugfs)/x86/
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fixes from Ingo Molnar: "This includes a fix for lockups caused by incorrect nsecs related cleanup, and a capabilities check fix for timerfd" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: jiffies: Revert bogus conversion of NSEC_PER_SEC to TICK_NSEC timerfd: Only check CAP_WAKE_ALARM when it is needed
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Ingo Molnar: "A fix for KVM's scheduler clock which (erroneously) was always marked unstable, a fix for RT/DL load balancing, plus latency fixes" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/clock, x86/tsc: Rework the x86 'unstable' sched_clock() interface sched/core: Fix pick_next_task() for RT,DL sched/fair: Make select_idle_cpu() more aggressive
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "This includes a fix for a crash if certain special addresses are kprobed, plus does a rename of two Kconfig variables that were a minor misnomer" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS kprobes/x86: Fix kernel panic when certain exception-handling addresses are probed
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fixes from Ingo Molnar: - Change the new refcount_t warnings from WARN() to WARN_ONCE() - two ww_mutex fixes - plus a new lockdep self-consistency check for a bug that triggered in practice * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/ww_mutex: Adjust the lock number for stress test locking/lockdep: Add nest_lock integrity test locking/ww_mutex: Replace cpu_relax() with cond_resched() for tests locking/refcounts: Change WARN() to WARN_ONCE()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull IRQ fix from Ingo Molnar: "Fix an ARM TI DRA7XX SoC irqchip driver local variables type bug/warning" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/crossbar: Fix incorrect type of local variables
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull EFI fixes from Ingo Molnar: "A boot crash fix, and a secure boot related boot messages fix" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/arm: Fix boot crash with CONFIG_CPUMASK_OFFSTACK=y efi/libstub: Treat missing SecureBoot variable as Secure Boot disabled
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull core fixes from Ingo Molnar: "A couple of sched.h splitup related build fixes, plus an objtool fix" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Fix another GCC jump table detection issue drivers/char/nwbutton: Fix build breakage caused by include file reshuffling h8300: Fix build breakage caused by header file changes avr32: Fix build error caused by include file reshuffling
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git://git.infradead.org/users/willy/linux-daxLinus Torvalds authored
Pull idr fix (and new tests) from Matthew Wilcox: "One urgent patch in here; freeing the correct IDA bitmap. Everything else is changes to the test suite" * 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax: radix tree test suite: Specify -m32 in LDFLAGS too ida: Free correct IDA bitmap radix tree test suite: Depend on Makefile and quieten grep radix tree test suite: Fix build with --as-needed radix tree test suite: Build 32 bit binaries radix tree test suite: Add performance test for radix_tree_join() radix tree test suite: Add performance test for radix_tree_split() radix tree test suite: Add performance benchmarks radix tree test suite: Add test for radix_tree_clear_tags() radix tree test suite: Add tests for ida_simple_get() and ida_simple_remove() radix tree test suite: Add test for idr_get_next()
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull powerpc fixes from Michael Ellerman: "Five fairly small fixes for things that went in this cycle. A fairly large patch to rework the CAS logic on Power9, necessitated by a late change to the firmware API, and we can't boot without it. Three fixes going to stable, allowing more instructions to be emulated on LE, fixing a boot crash on 32-bit Freescale BookE machines, and the OPAL XICS workaround. And a patch from me to sort the selects under CONFIG PPC. Annoying churn, but worth it in the long run, and best for it to go in now to avoid conflicts. Thanks to: Alexey Kardashevskiy, Anton Blanchard, Balbir Singh, Gautham R. Shenoy, Laurentiu Tudor, Nicholas Piggin, Paul Mackerras, Ravi Bangoria, Sachin Sant, Shile Zhang, Suraj Jitindar Singh" * tag 'powerpc-4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc: Sort the selects under CONFIG_PPC powerpc/64: Fix L1D cache shape vector reporting L1I values powerpc/64: Avoid panic during boot due to divide by zero in init_cache_info() powerpc: Update to new option-vector-5 format for CAS powerpc: Parse the command line before calling CAS powerpc/xics: Work around limitations of OPAL XICS priority handling powerpc/64: Fix checksum folding in csum_add() powerpc/powernv: Fix opal tracepoints with JUMP_LABEL=n powerpc/booke: Fix boot crash due to null hugepd powerpc: Fix compiling a BE kernel with a powerpc64le toolchain selftest/powerpc: Fix false failures for skipped tests powerpc/powernv: Fix bug due to labeling ambiguity in power_enter_stop powerpc/64: Invalidate process table caching after setting process table powerpc: emulate_step() tests for load/store instructions powerpc: Emulation support for load/store instructions on LE
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Linus Torvalds authored
Merge branch 'stable/for-linus-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb Pull swiotlb updates from Konrad Rzeszutek Wilk: "Two tiny implementations of the DMA API for callback in ARM (for Xen)" * 'stable/for-linus-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb: swiotlb-xen: implement xen_swiotlb_get_sgtable callback swiotlb-xen: implement xen_swiotlb_dma_mmap callback
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Matthew Wilcox authored
Michael's patch to use the default make rule for linking and the patch from Rehas to use -m32 if building a 32-bit test-suite on a 64-bit platform don't work well together. Reported-by:
Rehas Sachdeva <aquannie@gmail.com> Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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Matthew Wilcox authored
There's a relatively rare race where we look at the per-cpu preallocated IDA bitmap, see it's NULL, allocate a new one, and atomically update it. If the kmalloc() happened to sleep and we were rescheduled to a different CPU, or an interrupt came in at the exact right time, another task might have successfully allocated a bitmap and already deposited it. I forgot what the semantics of cmpxchg() were and ended up freeing the wrong bitmap leading to KASAN reporting a use-after-free. Dmitry found the bug with syzkaller & wrote the patch. I wrote the test case that will reproduce the bug without his patch being applied. Reported-by:
Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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Matthew Wilcox authored
Changing the CFLAGS in the Makefile didn't always lead to a recompilation because the OFILES didn't depend on the Makefile. Also, after doing make clean, grep would still complain about a missing map-shift.h; we need -s as well as -q. Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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Michael Ellerman authored
Currently the radix tree test suite doesn't build with toolchains that use --as-needed by default, for example Ubuntu's: cc -I. -I../../include -g -O2 -Wall -D_LGPL_SOURCE -fsanitize=address -lpthread -lurcu main.o ... -o main /usr/bin/ld: regression1.o: undefined reference to symbol 'pthread_join@@GLIBC_2.17' /lib/powerpc64le-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line collect2: error: ld returned 1 exit status This is caused by the custom makefile rules placing LDFLAGS before the .o files that need the libraries. We could fix it by using --no-as-needed, or rewriting the custom rules. But we can also just drop the custom rules and move the libraries to LDLIBS, and then the default rules work correctly - with the one caveat that we need to add -fsanitize=address to LDFLAGS because that must be passed to the linker as well as the compiler. Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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Rehas Sachdeva authored
Add option 'make BUILD=32' for building 32-bit binaries. Signed-off-by:
Rehas Sachdeva <aquannie@gmail.com> Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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Rehas Sachdeva authored
Signed-off-by:
Rehas Sachdeva <aquannie@gmail.com> Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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Rehas Sachdeva authored
Signed-off-by:
Rehas Sachdeva <aquannie@gmail.com> Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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Rehas Sachdeva authored
Add performance benchmarks for radix tree insertion, tagging and deletion. Signed-off-by:
Rehas Sachdeva <aquannie@gmail.com> Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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Rehas Sachdeva authored
Assert that radix_tree_clear_tags() clears the tags on the passed node and slot. Assert that the case where the radix tree has only one entry at index zero and the node is NULL, is also handled. Signed-off-by:
Rehas Sachdeva <aquannie@gmail.com> Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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Rehas Sachdeva authored
Assert that ida_simple_get() allocates an id in the passed range or returns error on failure, and ida_simple_remove() releases an allocated id. Signed-off-by:
Rehas Sachdeva <aquannie@gmail.com> Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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Rehas Sachdeva authored
Assert that idr_get_next() returns the next populated entry in the tree with an ID greater than or equal to the value pointed to by @nextid argument. Signed-off-by:
Rehas Sachdeva <aquannie@gmail.com> Signed-off-by:
Matthew Wilcox <mawilcox@microsoft.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespaceLinus Torvalds authored
Pull namespace fix from Eric Biederman: "This fixes a race between put_ucounts and get_ucounts that can cause a use after free. The fix works by simplifying the code and so there is not even a temptation to be clever and play spinlock vs atomic reference games" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: ucount: Remove the atomicity from ucount->count
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-traceLinus Torvalds authored
Pull tracing fixes from Steven Rostedt: "There was some breakage with the changes for jump labels in the 4.11 merge window: - powerpc broke as jump labels uses the two LSB bits as flags in initialization. A check was added to make sure that all jump label entries were 4 bytes aligned, but powerpc didn't work that way for modules. Adding an alignment in the module linker script appeared to be the best solution. - Jump labels also added an anonymous union to access those LSB bits as a normal long. But because this structure had static initialization, it broke older compilers that could not statically initialize anonymous unions without brackets. - The command line parameter for setting function graph filter broke the "EMPTY_HASH" descriptor by modifying it instead of creating a new hash to hold the entries. - The command line parameter ftrace_graph_max_depth was added to allow its setting at boot time. It uses existing code and only the command line hook was added. This is not really a fix, but as it uses existing code without affecting anything else, I added it to this release. It was ready before the merge window closed, but I wanted to let it sit in linux-next for a couple of days first" * tag 'trace-v4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace/graph: Add ftrace_graph_max_depth kernel parameter tracing: Add #undef to fix compile error jump_label: Add comment about initialization order for anonymous unions jump_label: Fix anonymous union initialization module: set __jump_table alignment to 8 ftrace/graph: Do not modify the EMPTY_HASH for the function_graph filter tracing: Fix code comment for ftrace_ops_get_func()
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Frederic Weisbecker authored
commit 93825f2e converted NSEC_PER_SEC to TICK_NSEC because the author confused NSEC_PER_JIFFY with NSEC_PER_SEC. As a result, the calculation of refined jiffies got broken, triggering lockups. Fixes: 93825f2e ("jiffies: Reuse TICK_NSEC instead of NSEC_PER_JIFFY") Reported-and-tested-by:
Meelis Roos <mroos@linux.ee> Signed-off-by:
Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1488880534-3777-1-git-send-email-fweisbec@gmail.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Josh Poimboeuf authored
Arnd Bergmann reported a (false positive) objtool warning: drivers/infiniband/sw/rxe/rxe_resp.o: warning: objtool: rxe_responder()+0xfe: sibling call from callable instruction with changed frame pointer The issue is in find_switch_table(). It tries to find a switch statement's jump table by walking backwards from an indirect jump instruction, looking for a relocation to the .rodata section. In this case it stopped walking prematurely: the first .rodata relocation it encountered was for a variable (resp_state_name) instead of a jump table, so it just assumed there wasn't a jump table. The fix is to ignore any .rodata relocation which refers to an ELF object symbol. This works because the jump tables are anonymous and have no symbols associated with them. Reported-by:
Arnd Bergmann <arnd@arndb.de> Tested-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
Josh Poimboeuf <jpoimboe@redhat.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 3732710f ("objtool: Improve rare switch jump table pattern detection") Link: http://lkml.kernel.org/r/20170302225723.3ndbsnl4hkqbne7a@trebleSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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Guenter Roeck authored
Fix: drivers/char/nwbutton.c: In function 'button_sequence_finished': drivers/char/nwbutton.c:134:3: error: implicit declaration of function 'kill_cad_pid' The declaration has been moved from one include file to another. Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: c3edc401 ("sched/headers: Move task_struct::signal and ...") Link: http://lkml.kernel.org/r/1488762811-9022-1-git-send-email-linux@roeck-us.netSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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Guenter Roeck authored
Fix the following h8300 build failures: arch/h8300/kernel/ptrace_h.c: In function ‘trace_trap’: arch/h8300/kernel/ptrace_h.c:253:3: error: implicit declaration of function ‘force_sig’ Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: uclinux-h8-devel@lists.sourceforge.jp Fixes: c3edc401 ("sched/headers: Move task_struct::signal and ...") Link: http://lkml.kernel.org/r/1488738434-3504-1-git-send-email-linux@roeck-us.netSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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Guenter Roeck authored
Various avr32 builds fail: arch/avr32/oprofile/backtrace.c:58: error: dereferencing pointer to incomplete type arch/avr32/oprofile/backtrace.c:60: error: implicit declaration of function 'user_mode' Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Acked-by:
Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <rric@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: oprofile-list@lists.sf.net Fixes: f780d89a ("sched/headers: Remove <asm/ptrace.h> from ...") Link: http://lkml.kernel.org/r/1488762357-4500-1-git-send-email-linux@roeck-us.netSigned-off-by:
Ingo Molnar <mingo@kernel.org>
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- 06 Mar, 2017 6 commits
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Eric W. Biederman authored
Always increment/decrement ucount->count under the ucounts_lock. The increments are there already and moving the decrements there means the locking logic of the code is simpler. This simplification in the locking logic fixes a race between put_ucounts and get_ucounts that could result in a use-after-free because the count could go zero then be found by get_ucounts and then be freed by put_ucounts. A bug presumably this one was found by a combination of syzkaller and KASAN. JongWhan Kim reported the syzkaller failure and Dmitry Vyukov spotted the race in the code. Cc: stable@vger.kernel.org Fixes: f6b2db1a ("userns: Make the count of user namespaces per user") Reported-by:
JongHwan Kim <zzoru007@gmail.com> Reported-by:
Dmitry Vyukov <dvyukov@google.com> Reviewed-by:
Andrei Vagin <avagin@gmail.com> Signed-off-by:
"Eric W. Biederman" <ebiederm@xmission.com>
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Michael Ellerman authored
We have a big list of selects under CONFIG_PPC, and currently they're completely unsorted. This means people tend to add new selects at the bottom of the list, and so two commits which both add a new select will often conflict. Instead sort it alphabetically. This is nicer in and of itself, but also means two commits that add a new select will have a greater chance of not conflicting. Add a note at the top and bottom asking people to keep it sorted. And while we're here pad out the 'if' expressions to make them stand out. Suggested-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au>
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Michael Ellerman authored
It seems we didn't pay quite enough attention when testing the new cache shape vectors, which means we didn't notice the bug where the vector for the L1D was using the L1I values. Fix it, resulting in eg: L1I cache size: 0x8000 32768B 32K L1I line size: 0x80 8-way associative L1D cache size: 0x10000 65536B 64K L1D line size: 0x80 8-way associative Fixes: 98a5f361 ("powerpc: Add new cache geometry aux vectors") Cut-and-paste-bug-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Badly-reviewed-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au>
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Andy Shevchenko authored
Very common PCIe ethernet card. Already enabled in i386_defconfig. Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Link: http://lkml.kernel.org/r/20170306085748.85957-1-andriy.shevchenko@linux.intel.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Matjaz Hegedic authored
Without the parameter reboot=a, ASUS EeeBook X205TA/W will hang when it should reboot. This adds the appropriate quirk, thus fixing the problem. Signed-off-by:
Matjaz Hegedic <matjaz.hegedic@gmail.com> Link: http://lkml.kernel.org/r/1488737804-20681-1-git-send-email-matjaz.hegedic@gmail.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de>
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Anton Blanchard authored
I see a panic in early boot when building with a recent gcc toolchain. The issue is a divide by zero, which is undefined. Older toolchains let us get away with it: int foo(int a) { return a / 0; } foo: li 9,0 divw 3,3,9 extsw 3,3 blr But newer ones catch it: foo: trap Add a check to avoid the divide by zero. Fixes: e2827fe5 ("powerpc/64: Clean up ppc64_caches using a struct per cache") Signed-off-by:
Anton Blanchard <anton@samba.org> Acked-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au>
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