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kvm_write_guest_cached() does not mark all written pages as dirty and
code comments in kvm_gfn_to_hva_cache_init() talk about NULL memslot
with cross page accesses. Fix all the easy way.
The check is '<= 1' to have the same result for 'len = 0' cache anywhere
in the page. (nr_pages_needed is 0 on page boundary.)
Fixes: 8f964525a121 ("KVM: Allow cross page reads and writes from cached translations.")
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Message-Id: <20150408121648.GA3519@potion.brq.redhat.com>
Reviewed-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Update the check for UV2000/3000. Note when the HUB is not recognized.
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Hedi Berriche <hedi@sgi.com>
Acked-by: Dimitri Sivanich <sivanich@sgi.com>
Link: http://lkml.kernel.org/r/20150409182629.267239403@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Fix a bug in the OEM check function that determines if the
system is a UV system and the BIOS is compatible with the
kernel's UV apic driver. This prevents some possibly obscure
panics and guards the system against being started on SGI
hardware that does not have the required kernel support.
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Hedi Berriche <hedi@sgi.com>
Acked-by: Dimitri Sivanich <sivanich@sgi.com>
Link: http://lkml.kernel.org/r/20150409182629.112998930@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Optimize the first "SGI" OEM check to return faster if the
system is not an SGI or UV system.
Signed-off-by: Mike Travis <travis@sgi.com>
Acked-by: Hedi Berriche <hedi@sgi.com>
Acked-by: Dimitri Sivanich <sivanich@sgi.com>
Link: http://lkml.kernel.org/r/20150409182628.952357922@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Since commit 20d0189b1012a37d2533a87fb451f7852f2418d1
in v3.14-rc1 RAID0 has performed incorrect calculations
when the chunksize is not a power of 2.
This happens because "sector_div()" modifies its first argument, but
this wasn't taken into account in the patch.
So restore that first arg before re-using the variable.
Reported-by: Joe Landman <joe.landman@gmail.com>
Reported-by: Dave Chinner <david@fromorbit.com>
Fixes: 20d0189b1012a37d2533a87fb451f7852f2418d1
Cc: stable@vger.kernel.org (3.14 and later).
Signed-off-by: NeilBrown <neilb@suse.de>
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Remove the end address checking for flushda function. We need to flush
each address line for flushda instruction, from start to end address.
This is because flushda instruction only flush the cache if tag and line
fields are matched.
Change to use ldwio instruction (bypass cache) to load the instruction
that causing trap. Our interest is the actual instruction that executed
by the processor, this should be uncached.
Note, EA address might be an userspace cached address.
Signed-off-by: Ley Foon Tan <lftan@altera.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI fixes from Rafael Wysocki:
"These are stable-candidate fixes of some recently reported issues in
the cpufreq core, cpuidle core, the ACPI cpuidle driver and the
hibernate core.
Specifics:
- Revert a 3.17 hibernate commit that was supposed to fix an issue
related to e820 reserved regions, but broke resume from hibernation
on Lenovo x230 (Rafael J Wysocki).
- Prevent the ACPI cpuidle driver from overwriting the name and
description of the C0 state set by the core when the list of
C-states changes (Thomas Schlichter).
- Remove the no longer needed state_count field from struct
cpuidle_device which prevents the list of C-states shown by the
sysfs interface from becoming incorrect when the current number of
them is different from the number of C-states on boot (Bartlomiej
Zolnierkiewicz).
- The cpufreq core updates the policy object of the only online CPU
during system resume to make it reflect the current hardware state,
but it always assumes that CPU to be CPU0 which need not be the
case, so fix the code to avoid that assumption (Viresh Kumar)"
* tag 'pm+acpi-4.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Revert "PM / hibernate: avoid unsafe pages in e820 reserved regions"
cpuidle: ACPI: do not overwrite name and description of C0
cpuidle: remove state_count field from struct cpuidle_device
cpufreq: Schedule work for the first-online CPU on resume
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* pm-sleep:
Revert "PM / hibernate: avoid unsafe pages in e820 reserved regions"
* pm-cpufreq:
cpufreq: Schedule work for the first-online CPU on resume
* pm-cpuidle:
cpuidle: ACPI: do not overwrite name and description of C0
cpuidle: remove state_count field from struct cpuidle_device
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"Here are some fixes for v4.0. I apologize for how late they are. We
were hoping for some better fixes, but couldn't get them polished in
time. These fix:
- a Xen domU oops with PCI passthrough devices
- a sparc T5 boot failure
- a STM SPEAr13xx crash (use after initdata freed)
- a cpcihp hotplug driver thinko
- an AER thinko that printed stack junk
Details:
Enumeration
- Don't look for ACPI hotplug parameters if ACPI is disabled (Bjorn Helgaas)
Resource management
- Revert "sparc/PCI: Clip bridge windows to fit in upstream windows" (Bjorn Helgaas)
AER
- Avoid info leak in __print_tlp_header() (Rasmus Villemoes)
PCI device hotplug
- Add missing curly braces in cpci_configure_slot() (Dan Carpenter)
ST Microelectronics SPEAr13xx host bridge driver
- Drop __initdata from spear13xx_pcie_driver (Matwey V. Kornilov)
* tag 'pci-v4.0-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
Revert "sparc/PCI: Clip bridge windows to fit in upstream windows"
PCI: Don't look for ACPI hotplug parameters if ACPI is disabled
PCI: cpcihp: Add missing curly braces in cpci_configure_slot()
PCI/AER: Avoid info leak in __print_tlp_header()
PCI: spear: Drop __initdata from spear13xx_pcie_driver
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Adds an entry for Creative USB X-Fi to the rc_config array in
mixer_quirks.c to allow use of volume knob on the device.
Adds support for newer X-Fi Pro card, known as "Model No. SB1095"
with USB ID "041e:3237"
Signed-off-by: Dmitry M. Fedin <dmitry.fedin@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Feature macros work on sio_data as well, so use them there.
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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"ocfs2 syncs the wrong range" had been broken; prior to it the
code was doing the wrong thing in case of O_APPEND, all right,
but _after_ it we were syncing the wrong range in 100% cases.
*ppos, aka iocb->ki_pos is incremented prior to that point,
so we are always doing sync on the area _after_ the one we'd
written to.
Spotted by Joseph Qi <joseph.qi@huawei.com> back in January;
unfortunately, I'd missed his mail back then ;-/
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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These are all register available in nios2.
Signed-off-by: Ley Foon Tan <lftan@altera.com>
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The comment line regarding IOMMU_INIT and IOMMU_INIT_FINISH
macros is incorrect:
"The standard vs the _FINISH differs in that the _FINISH variant
will continue detecting other IOMMUs in the call list..."
It should be "..the *standard* variant will continue
detecting..."
Fix that. Also, make it readable while at it.
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: konrad.wilk@oracle.com
Fixes: 6e9636693373 ("x86, iommu: Update header comments with appropriate naming")
Link: http://lkml.kernel.org/r/1428508017-5316-1-git-send-email-Aravind.Gopalakrishnan@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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execve stubs are 7 bytes only. Padding them to 16 bytes is a
waste.
text data bss dec hex filename
12594 0 0 12594 3132 entry_64.o.before
12530 0 0 12530 30f2 entry_64.o
Run-tested.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-8-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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It used to be used to check for _TIF_IA32, but the check has
been removed.
Remove GET_THREAD_INFO() too.
Run-tested.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-7-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Replace
test
jz 1f
jmp label
1:
with
test
jnz label
Run-tested.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-6-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Jumping to the very next instruction is not very useful:
jmp label
label:
Removing the jump.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-5-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Replace "call func; ret" with "jmp func".
Run-tested.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-4-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The change which affected how execve clears EXTRA_REGS missed
32-bit execve syscalls.
Fix this by using 64-bit execve stub epilogue for them too.
Run-tested.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-3-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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This is a preparatory patch for moving stub32_execve[at]() to this
file. It makes sense to have all execve stubs in one place, so
that they can reuse code.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-2-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Similarly to stub_execve, we can reuse the epilogue in
stub_rt_sigreturn() and stub_x32_rt_sigreturn().
Add a comment explaining why we can't eliminage SAVE_EXTRA_REGS
here.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1428439424-7258-1-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Commit 1bc9e47aa8e4 ("powerpc/jump_label: Use HAVE_JUMP_LABEL")
converted uses of CONFIG_JUMP_LABEL to HAVE_JUMP_LABEL in
some assembly files.
HAVE_JUMP_LABEL is defined in linux/jump_label.h, so we need to
include this or we always get the non jump label fallback code.
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: benh@kernel.crashing.org
Cc: catalin.marinas@arm.com
Cc: davem@davemloft.net
Cc: heiko.carstens@de.ibm.com
Cc: jbaron@akamai.com
Cc: linux@arm.linux.org.uk
Cc: linuxppc-dev@lists.ozlabs.org
Cc: liuj97@gmail.com
Cc: mgorman@suse.de
Cc: mmarek@suse.cz
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: rostedt@goodmis.org
Cc: schwidefsky@de.ibm.com
Cc: will.deacon@arm.com
Fixes: 1bc9e47aa8e4 ("powerpc/jump_label: Use HAVE_JUMP_LABEL")
Link: http://lkml.kernel.org/r/1428551492-21977-3-git-send-email-anton@samba.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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To use jump labels in assembly we need the HAVE_JUMP_LABEL
define, so we select a fallback version if the toolchain does
not support them.
Modify linux/jump_label.h so it can be included by assembly
files. We also need to add -DCC_HAVE_ASM_GOTO to KBUILD_AFLAGS.
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: benh@kernel.crashing.org
Cc: catalin.marinas@arm.com
Cc: davem@davemloft.net
Cc: heiko.carstens@de.ibm.com
Cc: jbaron@akamai.com
Cc: linux@arm.linux.org.uk
Cc: linuxppc-dev@lists.ozlabs.org
Cc: liuj97@gmail.com
Cc: mgorman@suse.de
Cc: mmarek@suse.cz
Cc: mpe@ellerman.id.au
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: rostedt@goodmis.org
Cc: schwidefsky@de.ibm.com
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1428551492-21977-2-git-send-email-anton@samba.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Wrap asm/jump_label.h for all archs with #ifndef __ASSEMBLY__.
Since these are kernel only headers, we don't need #ifdef
__KERNEL__ so can simplify things a bit.
If an architecture wants to use jump labels in assembly, it
will still need to define a macro to create the __jump_table
entries (see ARCH_STATIC_BRANCH in the powerpc asm/jump_label.h
for an example).
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: benh@kernel.crashing.org
Cc: catalin.marinas@arm.com
Cc: davem@davemloft.net
Cc: heiko.carstens@de.ibm.com
Cc: jbaron@akamai.com
Cc: linux@arm.linux.org.uk
Cc: linuxppc-dev@lists.ozlabs.org
Cc: liuj97@gmail.com
Cc: mgorman@suse.de
Cc: mmarek@suse.cz
Cc: mpe@ellerman.id.au
Cc: paulus@samba.org
Cc: ralf@linux-mips.org
Cc: rostedt@goodmis.org
Cc: schwidefsky@de.ibm.com
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1428551492-21977-1-git-send-email-anton@samba.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Similar to what Linus suggested for rwsem_spin_on_owner(), in
mutex_spin_on_owner() instead of having while (true) and
breaking out of the spin loop on lock->owner != owner, we can
have the loop directly check for while (lock->owner == owner) to
improve the readability of the code.
It also shrinks the code a bit:
text data bss dec hex filename
3721 0 0 3721 e89 mutex.o.before
3705 0 0 3705 e79 mutex.o.after
Signed-off-by: Jason Low <jason.low2@hp.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Link: http://lkml.kernel.org/r/1428521960-5268-2-git-send-email-jason.low2@hp.com
[ Added code generation info. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Fix
drivers/hwmon/ibmpowernv.c: In function 'get_logical_cpu':
drivers/hwmon/ibmpowernv.c:121:3:
error: implicit declaration of function 'get_hard_smp_processor_id'
seen for some configurations, possibly if SMP is not configured.
Fixes: 3df2f59f0aae ("hwmon: (ibmpowernv) pretty print labels")
Cc: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Thermal framework may already be ready and cooling policies might
already be functional when we are attempting to register gpio fan as
a cooling device. This can be reproduced by changing probe order in
which registration of various modules are done in a system. In such
a case, kernel generates an oops since the data structures are not
completely populated with the wrong assumption that thermal framework
is not yet ready. Fix this by reordering the thermal framework
registration to occur after hwmon registration of the fan is complete.
Example kernel oops:
[ 149.005828] Unable to handle kernel NULL pointer dereference at virtual address 0000008c
[ 149.014369] pgd = ecf48000
[ 149.017204] [0000008c] *pgd=ac065831, *pte=00000000, *ppte=00000000
[ 149.023820] Internal error: Oops: 17 [#1] SMP ARM
[ 149.028745] Modules linked in: gpio_fan(+) cpufreq_dt ipv6 evdev leds_gpio led_class omap_wdt phy_omap_usb2 rtc_palmas palmas_pwrbutton tmp102 ti_soc_thermal dwc3_omap thermal_sys extcon rtc_omap rtc_ds1307 hwmon
[ 149.048629] CPU: 1 PID: 1183 Comm: modprobe Not tainted 4.0.0-rc7-next-20150407-00002-g7a82da074c99 #3
[ 149.058383] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 149.064763] task: edec1240 ti: ec0e0000 task.ti: ec0e0000
[ 149.070421] PC is at dev_driver_string+0x0/0x38
[ 149.075165] LR is at __dev_printk+0x24/0x70
[ 149.079540] pc : [<c03d6cd0>] lr : [<c03d72c4>] psr: 20000013
[ 149.079540] sp : ec0e1c28 ip : edec1240 fp : 00000000
[ 149.091568] r10: edf3eee0 r9 : 00000000 r8 : ffffffff
[ 149.097040] r7 : edf3eea0 r6 : 00000034 r5 : 00000010 r4 : ec0e1c44
[ 149.103871] r3 : ec0e1c4c r2 : ec0e1c44 r1 : c079d800 r0 : 00000010
[ 149.110709] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 149.118182] Control: 10c5387d Table: acf4806a DAC: 00000015
[ 149.124198] Process modprobe (pid: 1183, stack limit = 0xec0e0218)
[ 149.130673] Stack: (0xec0e1c28 to 0xec0e2000)
[ 149.135235] 1c20: 60000013 c05e2ae0 00000000 edf3ec00 ec934a10 c03d73d4
...
[ 149.392230] 1fe0: befe1888 befe1878 00019418 b6ea08f0 80000010 00000003 00000000 00000000
[ 149.400798] [<c03d6cd0>] (dev_driver_string) from [<c03d72c4>] (__dev_printk+0x24/0x70)
[ 149.409193] [<c03d72c4>] (__dev_printk) from [<c03d73d4>] (dev_warn+0x34/0x48)
[ 149.416767] [<c03d73d4>] (dev_warn) from [<bf0f54fc>] (get_fan_speed_index+0x94/0xa4 [gpio_fan])
[ 149.425980] [<bf0f54fc>] (get_fan_speed_index [gpio_fan]) from [<bf0f5524>] (gpio_fan_get_cur_state+0x18/0x30 [gpio_fan])
[ 149.437476] [<bf0f5524>] (gpio_fan_get_cur_state [gpio_fan]) from [<bf02767c>] (thermal_zone_trip_update+0xe8/0x2a4 [thermal_sys])
[ 149.449794] [<bf02767c>] (thermal_zone_trip_update [thermal_sys]) from [<bf027844>] (step_wise_throttle+0xc/0x74 [thermal_sys])
[ 149.461832] [<bf027844>] (step_wise_throttle [thermal_sys]) from [<bf024ff4>] (handle_thermal_trip+0x5c/0x188 [thermal_sys])
[ 149.473603] [<bf024ff4>] (handle_thermal_trip [thermal_sys]) from [<bf0256c4>] (thermal_zone_device_update+0x94/0x108 [thermal_sys])
[ 149.486104] [<bf0256c4>] (thermal_zone_device_update [thermal_sys]) from [<bf026470>] (__thermal_cooling_device_register+0x2e8/0x374 [thermal_sys])
[ 149.499956] [<bf026470>] (__thermal_cooling_device_register [thermal_sys]) from [<bf0f58e4>] (gpio_fan_probe+0x350/0x4d0 [gpio_fan])
[ 149.512438] [<bf0f58e4>] (gpio_fan_probe [gpio_fan]) from [<c03db8a0>] (platform_drv_probe+0x48/0x98)
[ 149.522109] [<c03db8a0>] (platform_drv_probe) from [<c03da30c>] (driver_probe_device+0x1b0/0x26c)
[ 149.531399] [<c03da30c>] (driver_probe_device) from [<c03da45c>] (__driver_attach+0x94/0x98)
[ 149.540238] [<c03da45c>] (__driver_attach) from [<c03d8bb0>] (bus_for_each_dev+0x54/0x88)
[ 149.548814] [<c03d8bb0>] (bus_for_each_dev) from [<c03d9a34>] (bus_add_driver+0xdc/0x1d4)
[ 149.557381] [<c03d9a34>] (bus_add_driver) from [<c03dac30>] (driver_register+0x78/0xf4)
[ 149.565765] [<c03dac30>] (driver_register) from [<c0009784>] (do_one_initcall+0x80/0x1d8)
[ 149.574340] [<c0009784>] (do_one_initcall) from [<c00c2278>] (do_init_module+0x5c/0x1b8)
[ 149.582833] [<c00c2278>] (do_init_module) from [<c00c3bbc>] (load_module+0x1720/0x1dcc)
[ 149.591212] [<c00c3bbc>] (load_module) from [<c00c43d0>] (SyS_finit_module+0x68/0x6c)
[ 149.599418] [<c00c43d0>] (SyS_finit_module) from [<c000f3c0>] (ret_fast_syscall+0x0/0x4c)
[ 149.607994] Code: 15830000 e1a00006 e28dd008 e8bd8070 (e590307c)
Cc: Eduardo Valentin <edubezval@gmail.com>
Fixes: b5cf88e46bad ("(gpio-fan): Add thermal control hooks")
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Pull drm fixes from Dave Airlie:
"Final drm fixes: one core locking imbalance regression, and a bunch of
i915 baytrail s/r fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm: fix drm_mode_getconnector() locking imbalance regression
drm/i915/vlv: remove wait for previous GFX clk disable request
drm/i915/chv: Remove Wait for a previous gfx force-off
drm/i915/vlv: save/restore the power context base reg
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull ceph revert from Sage Weil:
"This corrects a recent misadventure with __GFP_MEMALLOC and
PF_MEMALLOC; it turns out it's not a good fit for RBD and we're better
off relying on dirty page throttling"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
Revert "libceph: use memalloc flags for net IO"
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Merge misc fixes from Andrew Morton:
"Three fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: numa: disable change protection for vma(VM_HUGETLB)
include/linux/dmapool.h: declare struct device
mm: move zone lock to a different cache line than order-0 free page lists
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Unlike most (all?) other copies from user space, kernel module loading
is almost unlimited in size. So we do a potentially huge
"copy_from_user()" when we copy the module data from user space to the
kernel buffer, which can be a latency concern when preemption is
disabled (or voluntary).
Also, because 'copy_from_user()' clears the tail of the kernel buffer on
failures, even a *failed* copy can end up wasting a lot of time.
Normally neither of these are concerns in real life, but they do trigger
when doing stress-testing with trinity. Running in a VM seems to add
its own overheadm causing trinity module load testing to even trigger
the watchdog.
The simple fix is to just chunk up the module loading, so that it never
tries to copy insanely big areas in one go. That bounds the latency,
and also the amount of (unnecessarily, in this case) cleared memory for
the failure case.
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The rule for 'copy_from_user()' is that it zeroes the remaining kernel
buffer even when the copy fails halfway, just to make sure that we don't
leave uninitialized kernel memory around. Because even if we check for
errors, some kernel buffers stay around after thge copy (think page
cache).
However, the x86-64 logic for user copies uses a copy_user_generic()
function for all the cases, that set the "zerorest" flag for any fault
on the source buffer. Which meant that it didn't just try to clear the
kernel buffer after a failure in copy_from_user(), it also tried to
clear the destination user buffer for the "copy_in_user()" case.
Not only is that pointless, it also means that the clearing code has to
worry about the tail clearing taking page faults for the user buffer
case. Which is just stupid, since that case shouldn't happen in the
first place.
Get rid of the whole "zerorest" thing entirely, and instead just check
if the destination is in kernel space or not. And then just use
memset() to clear the tail of the kernel buffer if necessary.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://anongit.freedesktop.org/drm-intel into drm-fixes
three commits, all cc: stable, to address Baytrail
suspend/resume issues.
* tag 'drm-intel-fixes-2015-04-08' of git://anongit.freedesktop.org/drm-intel:
drm/i915/vlv: remove wait for previous GFX clk disable request
drm/i915/chv: Remove Wait for a previous gfx force-off
drm/i915/vlv: save/restore the power context base reg
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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generic_file_direct_write() already does that. Broken by
"ocfs2: do not fallback to buffer I/O write if appending"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Some BIOS version of Fujitsu Lifebook T731 seems to set up the
headphone pin (0x21) without the assoc number 0x0f while it's set only
to the output on the docking port (0x1a). With the recent commit
[03ad6a8c93b6: ALSA: hda - Fix "PCM" name being used on one DAC when
there are two DACs], this resulted in the weird mixer element
mapping where the headphone on the laptop is assigned as a shared
volume with the speaker and the docking port is assigned as an
individual headphone.
This patch improves the situation by correcting the headphone pin
config to the more appropriate value.
Reported-and-tested-by: Taylor Smock <smocktaylor@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The new OPAL device tree adds a few properties which can be used to add
extra information on the sensor label.
In the case of a cpu core sensor, the firmware exposes the physical
identifier of the core in the "ibm,pir" property. The driver
translates this identifier in a linux cpu number and prints out a
range corresponding to the hardware threads of the core (as they
share the same sensor).
The numbering gives a hint on the localization of the core in the
system (which socket, which chip).
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Currently, sensors are only identified by their type and index.
The new OPAL device tree can expose extra properties to identify
some sensors by their name or location. This patch adds the creation
of a new hwmon *_label attribute when such properties are detected.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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The new OPAL device tree for sensors has a different layout and uses new
property names, for the type and for the handler used to capture the
sensor data.
This patch modifies the ibmpowernv driver to support such a tree in a
way preserving compatibility with older OPAL firmwares.
This is achieved by changing the error path of the routine parsing
an OPAL node name. The node is simply considered being from the new
device tree layout and fallback values are used.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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This should shorten a bit the code necessary to create a hmwon attribute.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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SCSI transport drivers and SCSI LLDs block a SCSI device if the
transport layer is not operational. This means that in this state
no requests should be processed, even if the REQ_PREEMPT flag has
been set. This patch avoids that a rescan shortly after a cable
pull sporadically triggers the following kernel oops:
BUG: unable to handle kernel paging request at ffffc9001a6bc084
IP: [<ffffffffa04e08f2>] mlx4_ib_post_send+0xd2/0xb30 [mlx4_ib]
Process rescan-scsi-bus (pid: 9241, threadinfo ffff88053484a000, task ffff880534aae100)
Call Trace:
[<ffffffffa0718135>] srp_post_send+0x65/0x70 [ib_srp]
[<ffffffffa071b9df>] srp_queuecommand+0x1cf/0x3e0 [ib_srp]
[<ffffffffa0001ff1>] scsi_dispatch_cmd+0x101/0x280 [scsi_mod]
[<ffffffffa0009ad1>] scsi_request_fn+0x411/0x4d0 [scsi_mod]
[<ffffffff81223b37>] __blk_run_queue+0x27/0x30
[<ffffffff8122a8d2>] blk_execute_rq_nowait+0x82/0x110
[<ffffffff8122a9c2>] blk_execute_rq+0x62/0xf0
[<ffffffffa000b0e8>] scsi_execute+0xe8/0x190 [scsi_mod]
[<ffffffffa000b2f3>] scsi_execute_req+0xa3/0x130 [scsi_mod]
[<ffffffffa000c1aa>] scsi_probe_lun+0x17a/0x450 [scsi_mod]
[<ffffffffa000ce86>] scsi_probe_and_add_lun+0x156/0x480 [scsi_mod]
[<ffffffffa000dc2f>] __scsi_scan_target+0xdf/0x1f0 [scsi_mod]
[<ffffffffa000dfa3>] scsi_scan_host_selected+0x183/0x1c0 [scsi_mod]
[<ffffffffa000edfb>] scsi_scan+0xdb/0xe0 [scsi_mod]
[<ffffffffa000ee13>] store_scan+0x13/0x20 [scsi_mod]
[<ffffffff811c8d9b>] sysfs_write_file+0xcb/0x160
[<ffffffff811589de>] vfs_write+0xce/0x140
[<ffffffff81158b53>] sys_write+0x53/0xa0
[<ffffffff81464592>] system_call_fastpath+0x16/0x1b
[<00007f611c9d9300>] 0x7f611c9d92ff
Reported-by: Max Gurtuvoy <maxg@mellanox.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Cc: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Kernel panic was happening as iscsi_host_remove() was called on
a host which was not yet added.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Cc: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Some M-Audio devices require to receive bootup command just after
powering on, while codes in BeBoB driver doesn't work properly in
big-endian machine because the command should be aligned by
little-endian.
This commit fixes this bug. This fix should go to stable kernel.
Cc: Takayuki Shiroma <t.shiroma.oki@gmail.com>
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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This reverts commit d63e2e1f3df904bf6bd150bdafb42ddbb3257ea8.
David Ahern reported that d63e2e1f3df9 breaks booting on an 8-socket T5
sparc system. He also verified that the system boots with d63e2e1f3df9
reverted. Yinghai has some fixes, but they need a little more polishing
than we can do before v4.0.
Link: http://lkml.kernel.org/r/5514391F.2030300@oracle.com # report
Link: http://lkml.kernel.org/r/1427857069-6789-1-git-send-email-yinghai@kernel.org # patches
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v3.19+
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Booting a v3.18 or newer Xen domU kernel with PCI devices passed through
results in an oops (this is a 32-bit 3.13.11 dom0 with a 64-bit 4.4.0
hypervisor and 32-bit domU):
BUG: unable to handle kernel paging request at 0030303e
IP: [<c06ed0e6>] acpi_ns_validate_handle+0x12/0x1a
Call Trace:
[<c06eda4d>] ? acpi_evaluate_object+0x31/0x1fc
[<c06b78e1>] ? pci_get_hp_params+0x111/0x4e0
[<c0407bc7>] ? xen_force_evtchn_callback+0x17/0x30
[<c04085fb>] ? xen_restore_fl_direct_reloc+0x4/0x4
[<c0699d34>] ? pci_device_add+0x24/0x450
Don't look for ACPI configuration information if ACPI has been disabled.
I don't think this is the best fix, because we can boot plain Linux (no
Xen) with "acpi=off", and we don't need this check in pci_get_hp_params().
There should be a better fix that would make Xen domU work the same way.
The domU kernel has ACPI support but it has no AML. There should be a way
to initialize the ACPI data structures so things fail gracefully rather
than oopsing. This is an interim fix to address the regression.
Fixes: 6cd33649fa83 ("PCI: Add pci_configure_device() during enumeration")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=96301
Reported-by: Michael D Labriola <mlabriol@gdeb.com>
Tested-by: Michael D Labriola <mlabriol@gdeb.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v3.18+
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Pin sense will active when power pin is wake up.
Power pin will not wake up immediately during resume state.
Add some delay to wait for power pin activated.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Dirty logging tracks sptes in 4k granularity, meaning that large sptes
have to be split. If live migration is successful, the guest in the
source machine will be destroyed and large sptes will be created in the
destination. However, the guest continues to run in the source machine
(for example if live migration fails), small sptes will remain around
and cause bad performance.
This patch introduce lazy collapsing of small sptes into large sptes.
The rmap will be scanned in ioctl context when dirty logging is stopped,
dropping those sptes which can be collapsed into a single large-page spte.
Later page faults will create the large-page sptes.
Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Message-Id: <1428046825-6905-1-git-send-email-wanpeng.li@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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CR2 is not cleared as it should after reset. See Intel SDM table named "IA-32
Processor States Following Power-up, Reset, or INIT".
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Message-Id: <1427933438-12782-5-git-send-email-namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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DR0-DR3 are not cleared as they should during reset and when they are set from
userspace. It appears to be caused by c77fb5fe6f03 ("KVM: x86: Allow the guest
to run with dirty debug registers").
Force their reload on these situations.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Message-Id: <1427933438-12782-4-git-send-email-namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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