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Thanks to spatch, then a sweep for for_each_cpu_mask => for_each_cpu.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
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Just a bit of manual neatening, before spatch cleans the rest.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org
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Pull KVM fixes from Marcelo Tosatti:
"KVM bug fixes, including a SVM interrupt injection regression fix,
MIPS and ARM bug fixes"
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: MIPS: Enable after disabling interrupt
KVM: MIPS: Fix trace event to save PC directly
KVM: SVM: fix interrupt injection (apic->isr_count always 0)
KVM: emulate: fix CMPXCHG8B on 32-bit hosts
KVM: VMX: fix build without CONFIG_SMP
arm/arm64: KVM: Add exit reaons to kvm_exit event tracing
ARM: KVM: Fix size check in __coherent_cache_guest_page
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Enable disabled interrupt, on unsuccessful operation.
Found by Coccinelle.
Signed-off-by: Tapasweni Pathak <tapaswenipathak@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Currently the guest exit trace event saves the VCPU pointer to the
structure, and the guest PC is retrieved by dereferencing it when the
event is printed rather than directly from the trace record. This isn't
safe as the printing may occur long afterwards, after the PC has changed
and potentially after the VCPU has been freed. Usually this results in
the same (wrong) PC being printed for multiple trace events. It also
isn't portable as userland has no way to access the VCPU data structure
when interpreting the trace record itself.
Lets save the actual PC in the structure so that the correct value is
accessible later.
Fixes: 669e846e6c4e ("KVM/MIPS32: MIPS arch specific APIs for KVM")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Cc: <stable@vger.kernel.org> # v3.10+
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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In commit b4eef9b36db4, we started to use hwapic_isr_update() != NULL
instead of kvm_apic_vid_enabled(vcpu->kvm). This didn't work because
SVM had it defined and "apicv" path in apic_{set,clear}_isr() does not
change apic->isr_count, because it should always be 1. The initial
value of apic->isr_count was based on kvm_apic_vid_enabled(vcpu->kvm),
which is always 0 for SVM, so KVM could have injected interrupts when it
shouldn't.
Fix it by implicitly setting SVM's hwapic_isr_update to NULL and make the
initial isr_count depend on hwapic_isr_update() for good measure.
Fixes: b4eef9b36db4 ("kvm: x86: vmx: NULL out hwapic_isr_update() in case of !enable_apicv")
Reported-and-tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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This has been broken for a long time: it broke first in 2.6.35, then was
almost fixed in 2.6.36 but this one-liner slipped through the cracks.
The bug shows up as an infinite loop in Windows 7 (and newer) boot on
32-bit hosts without EPT.
Windows uses CMPXCHG8B to write to page tables, which causes a
page fault if running without EPT; the emulator is then called from
kvm_mmu_page_fault. The loop then happens if the higher 4 bytes are
not 0; the common case for this is that the NX bit (bit 63) is 1.
Fixes: 6550e1f165f384f3a46b60a1be9aba4bc3c2adad
Fixes: 16518d5ada690643453eb0aef3cc7841d3623c2d
Cc: stable@vger.kernel.org # 2.6.35+
Reported-by: Erik Rull <erik.rull@rdsoftware.de>
Tested-by: Erik Rull <erik.rull@rdsoftware.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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'apic' is not defined if !CONFIG_X86_64 && !CONFIG_X86_LOCAL_APIC.
Posted interrupt makes no sense without CONFIG_SMP, and
CONFIG_X86_LOCAL_APIC will be set with it.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This patch extends trace_kvm_exit() to include KVM exit reasons
(i.e. EC of HSR). The tracing function then dumps both exit reason
and PC of vCPU, shown as the following. Tracing tools can use this
new exit_reason field to better understand the behavior of guest VMs.
886.301252: kvm_exit: HSR_EC: 0x0024, PC: 0xfffffe0000506b28
Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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The check is supposed to catch page-unaligned sizes, not the inverse.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
- Fix for /proc/<pid>/maps "stack" vma annotation
- sched stats not printing correct sleeping task PC
- perf not reporting page faults
* tag 'arc-4.0-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: Fix thread_saved_pc()
ARC: Fix KSTK_ESP()
ARC: perf: Enable generic software events
ARC: Make arc_unwind_core accessible externally
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The old implementation assumed that SP at the time of __switch_to() is
right above pt_regs which is almost certainly not the case as there will
be some stack build up between entry into kernel and leading up to
__switch_to
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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/proc/<pid>/maps currently don't annotate stack vma with "[stack]"
This is because KSTK_ESP ie expected to return usermode SP of tsk while
currently it returns the kernel mode SP of a sleeping tsk.
While the fix is trivial, we also need to adjust the ARC kernel stack
unwinder to not use KSTK_SP and friends any more.
Cc: <stable@vger.kernel.org>
Reported-and-suggested-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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The arc unwinder can also be used for perf callchains.
Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc fixes from Michael Ellerman:
- Fix for dynticks.
- Fix for smpboot bug.
- Fix for IOMMU group refcounting.
* tag 'powerpc-4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
powerpc/iommu: Remove IOMMU device references via bus notifier
powerpc/smp: Wait until secondaries are active & online
powerpc: Re-enable dynticks
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After d905c5df9aef ("PPC: POWERNV: move iommu_add_device earlier"), the
refcnt on the kobject backing the IOMMU group for a PCI device is
elevated by each call to pci_dma_dev_setup_pSeriesLP() (via
set_iommu_table_base_and_group). When we go to dlpar a multi-function
PCI device out:
iommu_reconfig_notifier ->
iommu_free_table ->
iommu_group_put
BUG_ON(tbl->it_group)
We trip this BUG_ON, because there are still references on the table, so
it is not freed. Fix this by moving the powernv bus notifier to common
code and calling it for both powernv and pseries.
Fixes: d905c5df9aef ("PPC: POWERNV: move iommu_add_device earlier")
Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Tested-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Anton has a busy ppc64le KVM box where guests sometimes hit the infamous
"kernel BUG at kernel/smpboot.c:134!" issue during boot:
BUG_ON(td->cpu != smp_processor_id());
Basically a per CPU hotplug thread scheduled on the wrong CPU. The oops
output confirms it:
CPU: 0
Comm: watchdog/130
The problem is that we aren't ensuring the CPU active bit is set for the
secondary before allowing the master to continue on. The master unparks
the secondary CPU's kthreads and the scheduler looks for a CPU to run
on. It calls select_task_rq() and realises the suggested CPU is not in
the cpus_allowed mask. It then ends up in select_fallback_rq(), and
since the active bit isnt't set we choose some other CPU to run on.
This seems to have been introduced by 6acbfb96976f "sched: Fix hotplug
vs. set_cpus_allowed_ptr()", which changed from setting active before
online to setting active after online. However that was in turn fixing a
bug where other code assumed an active CPU was also online, so we can't
just revert that fix.
The simplest fix is just to spin waiting for both active & online to be
set. We already have a barrier prior to set_cpu_online() (which also
sets active), to ensure all other setup is completed before online &
active are set.
Fixes: 6acbfb96976f ("sched: Fix hotplug vs. set_cpus_allowed_ptr()")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Implement arch_irq_work_has_interrupt() for powerpc
Commit 9b01f5bf3 introduced a dependency on "IRQ work self-IPIs" for
full dynamic ticks to be enabled, by expecting architectures to
implement a suitable arch_irq_work_has_interrupt() routine.
Several arches have implemented this routine, including x86 (3010279f)
and arm (09f6edd4), but powerpc was omitted.
This patch implements this routine for powerpc.
The symptom, at boot (on powerpc systems) with "nohz_full=<CPU list>"
is displayed:
NO_HZ: Can't run full dynticks because arch doesn't support irq work self-IPIs
after this patch:
NO_HZ: Full dynticks CPUs: <CPU list>.
Tested against 3.19.
powerpc implements "IRQ work self-IPIs" by setting the decrementer to 1 in
arch_irq_work_raise(), which causes a decrementer exception on the next
timebase tick. We then handle the work in __timer_interrupt().
CC: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Paul A. Clarke <pc@us.ibm.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
[mpe: Flesh out change log, fix ws & include guards, remove include of processor.h]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Pull networking fixes from David Miller:
1) If an IPVS tunnel is created with a mixed-family destination
address, it cannot be removed. Fix from Alexey Andriyanov.
2) Fix module refcount underflow in netfilter's nft_compat, from Pablo
Neira Ayuso.
3) Generic statistics infrastructure can reference variables sitting on
a released function stack, therefore use dynamic allocation always.
Fix from Ignacy Gawędzki.
4) skb_copy_bits() return value test is inverted in ip_check_defrag().
5) Fix network namespace exit in openvswitch, we have to release all of
the per-net vports. From Pravin B Shelar.
6) Fix signedness bug in CAIF's cfpkt_iterate(), from Dan Carpenter.
7) Fix rhashtable grow/shrink behavior, only expand during inserts and
shrink during deletes. From Daniel Borkmann.
8) Netdevice names with semicolons should never be allowed, because
they serve as a separator. From Matthew Thode.
9) Use {,__}set_current_state() where appropriate, from Fabian
Frederick.
10) Revert byte queue limits support in r8169 driver, it's causing
regressions we can't figure out.
11) tcp_should_expand_sndbuf() erroneously uses tp->packets_out to
measure packets in flight, properly use tcp_packets_in_flight()
instead. From Neal Cardwell.
12) Fix accidental removal of support for bluetooth in CSR based Intel
wireless cards. From Marcel Holtmann.
13) We accidently added a behavioral change between native and compat
tasks, wrt testing the MSG_CMSG_COMPAT bit. Just ignore it if the
user happened to set it in a native binary as that was always the
behavior we had. From Catalin Marinas.
14) Check genlmsg_unicast() return valud in hwsim netlink tx frame
handling, from Bob Copeland.
15) Fix stale ->radar_required setting in mac80211 that can prevent
starting new scans, from Eliad Peller.
16) Fix memory leak in nl80211 monitor, from Johannes Berg.
17) Fix race in TX index handling in xen-netback, from David Vrabel.
18) Don't enable interrupts in amx-xgbe driver until all software et al.
state is ready for the interrupt handler to run. From Thomas
Lendacky.
19) Add missing netlink_ns_capable() checks to rtnl_newlink(), from Eric
W Biederman.
20) The amount of header space needed in macvtap was not calculated
properly, fix it otherwise we splat past the beginning of the
packet. From Eric Dumazet.
21) Fix bcmgenet TCP TX perf regression, from Jaedon Shin.
22) Don't raw initialize or mod timers, use setup_timer() and
mod_timer() instead. From Vaishali Thakkar.
23) Fix software maintained statistics in bcmgenet and systemport
drivers, from Florian Fainelli.
24) DMA descriptor updates in sh_eth need proper memory barriers, from
Ben Hutchings.
25) Don't do UDP Fragmentation Offload on RAW sockets, from Michal
Kubecek.
26) Openvswitch's non-masked set actions aren't constructed properly
into netlink messages, fix from Joe Stringer.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits)
openvswitch: Fix serialization of non-masked set actions.
gianfar: Reduce logging noise seen due to phy polling if link is down
ibmveth: Add function to enable live MAC address changes
net: bridge: add compile-time assert for cb struct size
udp: only allow UFO for packets from SOCK_DGRAM sockets
sh_eth: Really fix padding of short frames on TX
Revert "sh_eth: Enable Rx descriptor word 0 shift for r8a7790"
sh_eth: Fix RX recovery on R-Car in case of RX ring underrun
sh_eth: Ensure proper ordering of descriptor active bit write/read
net/mlx4_en: Disbale GRO for incoming loopback/selftest packets
net/mlx4_core: Fix wrong mask and error flow for the update-qp command
net: systemport: fix software maintained statistics
net: bcmgenet: fix software maintained statistics
rxrpc: don't multiply with HZ twice
rxrpc: terminate retrans loop when sending of skb fails
net/hsr: Fix NULL pointer dereference and refcnt bugs when deleting a HSR interface.
net: pasemi: Use setup_timer and mod_timer
net: stmmac: Use setup_timer and mod_timer
net: 8390: axnet_cs: Use setup_timer and mod_timer
net: 8390: pcnet_cs: Use setup_timer and mod_timer
...
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The smc91x driver traditionally gets configured at compile-time
for whichever hardware it runs on. This no longer works on
ARM as we continue to move to building all-in-one kernels.
Most ARM configurations with this driver already use run-time
configuration through DT or through platform_data, but a
few have not been converted yet.
I've checked all ARM boards that use this driver in their
legacy board files, and converted the ones that were using
compile-time configuration in smc91x.h to behave like the
other ones and provide the interrupt polarity along with
the MMIO configuration (width, stride) at platform device
creation time.
In particular, these combinations were previously selectable
in Kconfig but in fact broken:
- sa1100 assabet plus pleb
- msm combined with any other armv6/v7 platform
- pxa-idp combined with any non-DMA pxa variant
- LogicPD PXA270 combined with any other pxa
- nomadik combined with any other armv4/v5 platform,
e.g. versatile.
None of these seem critical enough to warrant a backport
to stable, but it would be nice to clean this up for good.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
----
I would like the patch to get merged through netdev, after
Robert and/or Linus have verified it on at least some hardware.
There are a few other non-ARM platforms using this driver,
I could do the same patch for those if we want to take
it further.
arch/arm/mach-msm/board-halibut.c | 8 ++++-
arch/arm/mach-msm/board-qsd8x50.c | 8 ++++-
arch/arm/mach-pxa/idp.c | 5 +++
arch/arm/mach-pxa/lpd270.c | 8 ++++-
arch/arm/mach-realview/core.c | 7 ++++
arch/arm/mach-realview/realview_eb.c | 2 +-
arch/arm/mach-sa1100/neponset.c | 6 ++++
arch/arm/mach-sa1100/pleb.c | 7 ++++
drivers/net/ethernet/smsc/smc91x.c | 9 +++--
drivers/net/ethernet/smsc/smc91x.h | 114 ++----------------------------------------------------------
10 files changed, 57 insertions(+), 117 deletions(-)
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag
Pull arch/metag fix from James Hogan:
"This is just a single patch to fix the KSTK_EIP() and KSTK_ESP()
macros for metag which have always been erronously returning the PC
and stack pointer of the task's kernel context rather than from its
user context saved at entry from userland into the kernel, which
affects the contents of /proc/<pid>/maps and /proc/<pid>/stat"
* tag 'metag-fixes-v4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
metag: Fix KSTK_EIP() and KSTK_ESP() macros
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The KSTK_EIP() and KSTK_ESP() macros should return the user program
counter (PC) and stack pointer (A0StP) of the given task. These are used
to determine which VMA corresponds to the user stack in
/proc/<pid>/maps, and for the user PC & A0StP in /proc/<pid>/stat.
However for Meta the PC & A0StP from the task's kernel context are used,
resulting in broken output. For example in following /proc/<pid>/maps
output, the 3afff000-3b021000 VMA should be described as the stack:
# cat /proc/self/maps
...
100b0000-100b1000 rwxp 00000000 00:00 0 [heap]
3afff000-3b021000 rwxp 00000000 00:00 0
And in the following /proc/<pid>/stat output, the PC is in kernel code
(1074234964 = 0x40078654) and the A0StP is in the kernel heap
(1335981392 = 0x4fa17550):
# cat /proc/self/stat
51 (cat) R ... 1335981392 1074234964 ...
Fix the definitions of KSTK_EIP() and KSTK_ESP() to use
task_pt_regs(tsk)->ctx rather than (tsk)->thread.kernel_context. This
gets the registers from the user context stored after the thread info at
the base of the kernel stack, which is from the last entry into the
kernel from userland, regardless of where in the kernel the task may
have been interrupted, which results in the following more correct
/proc/<pid>/maps output:
# cat /proc/self/maps
...
0800b000-08070000 r-xp 00000000 00:02 207 /lib/libuClibc-0.9.34-git.so
...
100b0000-100b1000 rwxp 00000000 00:00 0 [heap]
3afff000-3b021000 rwxp 00000000 00:00 0 [stack]
And /proc/<pid>/stat now correctly reports the PC in libuClibc
(134320308 = 0x80190b4) and the A0StP in the [stack] region (989864576 =
0x3b002280):
# cat /proc/self/stat
51 (cat) R ... 989864576 134320308 ...
Reported-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Reported-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
Cc: <stable@vger.kernel.org> # v3.9+
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"A CR4-shadow 32-bit init fix, plus two typo fixes"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Init per-cpu shadow copy of CR4 on 32-bit CPUs too
x86/platform/intel-mid: Fix trivial printk message typo in intel_mid_arch_setup()
x86/cpu/intel: Fix trivial typo in intel_tlb_table[]
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Commit:
1e02ce4cccdc ("x86: Store a per-cpu shadow copy of CR4")
added a shadow CR4 such that reads and writes that do not
modify the CR4 execute much faster than always reading the
register itself.
The change modified cpu_init() in common.c, so that the
shadow CR4 gets initialized before anything uses it.
Unfortunately, there's two cpu_init()s in common.c. There's
one for 64-bit and one for 32-bit. The commit only added
the shadow init to the 64-bit path, but the 32-bit path
needs the init too.
Link: http://lkml.kernel.org/r/20150227125208.71c36402@gandalf.local.home Fixes: 1e02ce4cccdc "x86: Store a per-cpu shadow copy of CR4"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20150227145019.2bdd4354@gandalf.local.home
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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intel_mid_arch_setup()
Change 'Uknown' to 'Unknown'
Signed-off-by: Yannick Guerrini <yguerrini@tomshardware.fr>
Cc: trivial@kernel.org
Link: http://lkml.kernel.org/r/1424710358-10140-1-git-send-email-yguerrini@tomshardware.fr
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Change 'ssociative' to 'associative'
Signed-off-by: Yannick Guerrini <yguerrini@tomshardware.fr>
Cc: Borislav Petkov <bp@suse.de>
Cc: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Cc: Chris Bainbridge <chris.bainbridge@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Steven Honeyman <stevenhoneyman@gmail.com>
Cc: trivial@kernel.org
Link: http://lkml.kernel.org/r/1424558510-1420-1-git-send-email-yguerrini@tomshardware.fr
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar:
"Three clockevents/clocksource driver fixes"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: pxa: Fix section mismatch
clocksource: mtk: Fix race conditions in probe code
clockevents: asm9260: Fix compilation error with sparc/sparc64 allyesconfig
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git://git.linaro.org/people/daniel.lezcano/linux into timers/urgent
Pull clockevents driver fixes from Daniel Lezcano:
- Fix the Kconfig to prevent the asm9260 timer to be compiled with
allyesconfig with sparc/sparc64 (Daniel Lezcano)
- Reorder the mtk driver init sequence in order to prevent a potential race
when the clock is registered before the irq handler is set (Matthias Brugger)
- Fix a section mismatch for the pxa driver (Robert Jarzmik)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The Kconfig options for the asm9260 timer is wrong as it can be selected by
another platform with allyes config and thus leading to a compilation failure
as some non arch related code is pulled by the compilation.
Fix this by having the platform Kconfig to select the timer as it is done for
the others drivers.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Oleksij Rempel <linux@rempel-privat.de>
Conflicts:
drivers/clocksource/Kconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Two kprobes fixes and a handful of tooling fixes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Make sparc64 arch point to sparc
perf symbols: Define EM_AARCH64 for older OSes
perf top: Fix SIGBUS on sparc64
perf tools: Fix probing for PERF_FLAG_FD_CLOEXEC flag
perf tools: Fix pthread_attr_setaffinity_np build error
perf tools: Define _GNU_SOURCE on pthread_attr_setaffinity_np feature check
perf bench: Fix order of arguments to memcpy_alloc_mem
kprobes/x86: Check for invalid ftrace location in __recover_probed_insn()
kprobes/x86: Use 5-byte NOP when the code might be modified by ftrace
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__recover_probed_insn() should always be called from an address
where an instructions starts. The check for ftrace_location()
might help to discover a potential inconsistency.
This patch adds WARN_ON() when the inconsistency is detected.
Also it adds handling of the situation when the original code
can not get recovered.
Suggested-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Petr Mladek <pmladek@suse.cz>
Cc: Ananth NMavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1424441250-27146-3-git-send-email-pmladek@suse.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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can_probe() checks if the given address points to the beginning
of an instruction. It analyzes all the instructions from the
beginning of the function until the given address. The code
might be modified by another Kprobe. In this case, the current
code is read into a buffer, int3 breakpoint is replaced by the
saved opcode in the buffer, and can_probe() analyzes the buffer
instead.
There is a bug that __recover_probed_insn() tries to restore
the original code even for Kprobes using the ftrace framework.
But in this case, the opcode is not stored. See the difference
between arch_prepare_kprobe() and arch_prepare_kprobe_ftrace().
The opcode is stored by arch_copy_kprobe() only from
arch_prepare_kprobe().
This patch makes Kprobe to use the ideal 5-byte NOP when the
code can be modified by ftrace. It is the original instruction,
see ftrace_make_nop() and ftrace_nop_replace().
Note that we always need to use the NOP for ftrace locations.
Kprobes do not block ftrace and the instruction might get
modified at anytime. It might even be in an inconsistent state
because it is modified step by step using the int3 breakpoint.
The patch also fixes indentation of the touched comment.
Note that I found this problem when playing with Kprobes. I did
it on x86_64 with gcc-4.8.3 that supported -mfentry. I modified
samples/kprobes/kprobe_example.c and added offset 5 to put
the probe right after the fentry area:
static struct kprobe kp = {
.symbol_name = "do_fork",
+ .offset = 5,
};
Then I was able to load kprobe_example before jprobe_example
but not the other way around:
$> modprobe jprobe_example
$> modprobe kprobe_example
modprobe: ERROR: could not insert 'kprobe_example': Invalid or incomplete multibyte or wide character
It did not make much sense and debugging pointed to the bug
described above.
Signed-off-by: Petr Mladek <pmladek@suse.cz>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth NMavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1424441250-27146-2-git-send-email-pmladek@suse.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge misc fixes from Andrew Morton:
"13 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: add missing __PAGETABLE_{PUD,PMD}_FOLDED defines
mm: page_alloc: revert inadvertent !__GFP_FS retry behavior change
kernel/sys.c: fix UNAME26 for 4.0
mm: memcontrol: use "max" instead of "infinity" in control knobs
zram: use proper type to update max_used_pages
drivers/rtc/rtc-ds1685.c: fix conditional in ds1685_rtc_sysfs_time_regs_{show,store}
nilfs2: fix potential memory overrun on inode
scripts/gdb: add empty package initialization script
rtc: ds1685: remove superfluous checks for out-of-range u8 values
rtc: ds1685: fix ds1685_rtc_alarm_irq_enable build error
memcg: fix low limit calculation
mm/nommu: fix memory leak
ocfs2: update web page + git tree in documentation
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Core mm expects __PAGETABLE_{PUD,PMD}_FOLDED to be defined if these page
table levels folded. Usually, these defines are provided by
<asm-generic/pgtable-nopmd.h> and <asm-generic/pgtable-nopud.h>.
But some architectures fold page table levels in a custom way. They
need to define these macros themself. This patch adds missing defines.
The patch fixes mm->nr_pmds underflow and eliminates dead __pmd_alloc()
and __pud_alloc() on architectures without these page table levels.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"The arm-soc bug fixes this time around are mostly for the omap
platform, coming from a pull request from Tony Lindgren and are almost
entirely fixing dts files.
The other two changes enable support for the shmobile platform in
generic armv7 kernels and change some properties in the ARM64
reference board dts files"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: multi_v7_defconfig: Enable shmobile platforms
arm64: Add L2 cache topology to ARM Ltd boards/models
ARM: dts: am335x-bone*: usb0 is hardwired for peripheral
ARM: dts: dra7x-evm: beagle-x15: Fix USB Host
ARM: omap2plus_defconfig: Fix SATA boot
ARM: omap2plus_defconfig: Enable OMAP NAND BCH driver
ARM: dts: dra7: Correct the dma controller's property names
ARM: dts: omap5: Correct the dma controller's property names
ARM: dts: omap4: Correct the dma controller's property names
ARM: dts: omap3: Correct the dma controller's property names
ARM: dts: omap2: Correct the dma controller's property names
ARM: dts: am437x-idk: fix sleep pinctrl state
ARM: omap2plus_defconfig: enable TPS62362 regulator
ARM: dts: am437x-idk: fix TPS62362 i2c bus
ARM: dts: n900: Fix offset for smc91x ethernet
ARM: dts: n900: fix i2c bus numbering
ARM: dts: Fix USB dts configuration for dm816x
ARM: dts: OMAP5: Fix SATA PHY node
ARM: dts: DRA7: Fix SATA PHY node
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Enable support for shmobile platforms that became multi-platform aware.
Several non-critical drivers and subsystems are built as modules, to keep
kernel size reasonable.
Tested on:
- r8a73a4/ape6evm:
- U-Boot fails with "Error: unrecognized/unsupported machine ID",
- kexec works.
- r8a7740/armadillo:
- Hermit boot loader fails (larger image, more memory corruption),
- kexec works.
- r8a7791/koelsch,
- sh73a0/kzm9g:
- zImage+DTB from U-Boot needs CONFIG_ARM_ATAG_DTB_COMPAT=n,
- kexec works.
- am335x/boneblack.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Fixes for various omap devices. It's all dts and defconfig
changes for this set:
- Fix wrong DMA properties for dma to avoid them getting
copied wrong again before we start actually using them
- USB fixes to revert the extcon changes as the driver did not
get merged yet and cause issues
- Omap5 and dra7 fixes to boot from sata
- Fix few am437x issues for i2c and pinctrl
- Fix beaglebone for hardwared USB configuration
- Defconfig changes for NAND, SATA and TPS62362
- Fix n900 i2c numbering for legacy user space and smc91x
register offset so it works also for qemu
- Fix incomplete USB configuration for dm816x
* tag 'fixes-v4.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: am335x-bone*: usb0 is hardwired for peripheral
ARM: dts: dra7x-evm: beagle-x15: Fix USB Host
ARM: omap2plus_defconfig: Fix SATA boot
ARM: omap2plus_defconfig: Enable OMAP NAND BCH driver
ARM: dts: dra7: Correct the dma controller's property names
ARM: dts: omap5: Correct the dma controller's property names
ARM: dts: omap4: Correct the dma controller's property names
ARM: dts: omap3: Correct the dma controller's property names
ARM: dts: omap2: Correct the dma controller's property names
ARM: dts: am437x-idk: fix sleep pinctrl state
ARM: omap2plus_defconfig: enable TPS62362 regulator
ARM: dts: am437x-idk: fix TPS62362 i2c bus
ARM: dts: n900: Fix offset for smc91x ethernet
ARM: dts: n900: fix i2c bus numbering
ARM: dts: Fix USB dts configuration for dm816x
ARM: dts: OMAP5: Fix SATA PHY node
ARM: dts: DRA7: Fix SATA PHY node
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Fixes: http://bugs.elinux.org/issues/127
the bb.org community was seeing random reboots before this change.
Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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In commit 87517d26d888 ("ARM: dts: dra7-evm: Add extcon nodes for USB")
we enabled Extcon USB gpio to tackle the USB ID pin and get
peripheral mode to work.
But the extcon-gpio-usb driver [1] didn't make it into v4.0
and this makes the USB driver defer probe indefinitely breaking
USB Host functionality.
As a temporary fix we remove the extcon handle from the
USB controller and add it back when the extcon driver
merges in v4.1.
[1] - https://lkml.org/lkml/2015/2/2/187
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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SATA operation depends on PIPE3 PHY and if we want
to boot from SATA drives, we have to have the PIPE3 PHY
driver built-in.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Without this NAND doesn't work on most EVMs.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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According to the Documentation/devicetree/bindings/dma/dma.txt the
dma-channels and dma-requests property should not have '#'.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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According to the Documentation/devicetree/bindings/dma/dma.txt the
dma-channels and dma-requests property should not have '#'.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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According to the Documentation/devicetree/bindings/dma/dma.txt the
dma-channels and dma-requests property should not have '#'.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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According to the Documentation/devicetree/bindings/dma/dma.txt the
dma-channels and dma-requests property should not have '#'.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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According to the Documentation/devicetree/bindings/dma/dma.txt the
dma-channels and dma-requests property should not have '#'.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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we have i2c0 sleep pinctrl state but were passing
default state anyhow. Fix that.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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This regulator is used on AM437x Industrial Development Kit.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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