All places outside of core VFS that checked ->read and ->write for being NULL or
called the methods directly are gone now, so NULL {read,write} with non-NULL
{read,write}_iter will do the right thing in all cases.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
flush_old_exec() has already done that. Back on 2011 a bunch of
instances like that had been kicked out, but that hadn't taken
care of then-out-of-tree architectures, obviously, and they served
as reinfection vector...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
trivial conflict in net/socket.c and non-trivial one in crypto -
that one had evaded aio_complete() removal.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Conflicts:
drivers/net/ethernet/mellanox/mlx4/cmd.c
net/core/fib_rules.c
net/ipv4/fib_frontend.c
The fib_rules.c and fib_frontend.c conflicts were locking adjustments
in 'net' overlapping addition and removal of code in 'net-next'.
The mlx4 conflict was a bug fix in 'net' happening in the same
place a constant was being replaced with a more suitable macro.
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull x86 fixes from Ingo Molnar:
"Misc fixes: a SYSRET single-stepping fix, a dmi-scan robustization
fix, a reboot quirk and a kgdb fixlet"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kgdb/x86: Fix reporting of 'si' in kgdb on x86_64
x86/asm/entry/64: Disable opportunistic SYSRET if regs->flags has TF set
x86/reboot: Add ASRock Q1900DC-ITX mainboard reboot quirk
MAINTAINERS: Change the x86 microcode loader maintainer
firmware: dmi_scan: Prevent dmi_num integer overflow
- Fix two regressions in the balloon driver's use of memory hotplug
when used in a PV guest.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQEcBAABAgAGBQJVHWimAAoJEFxbo/MsZsTRSFkH/A1SYwcqUADPVZYDSc2T10Km
1kF7UifizlJ8/gCbEbhzLMDSPTwEENzN5ONWXQ+a3EXuK0UwLBnic9uKWAg2Q8cp
+uIpU1P15yM7rJFRaf6PZ2BqFdvWpXUJgNnof4+r0uqqa57hdmVOmVMKFenlf/h7
2jj0b19wS6jhuwl9PzgKTKQyjnpWrmkhfg5tDQzn1qUCHoKDIhM7ROUP7wsYfIu8
iAT3JV9lmNwdGT5jwf4MgRmBpqGZzQs03xaAz2E9/fnWWv7u4EuZcmbDcooUmi7H
luHQ2Dds1ajhjgtRwPoxT0tHFuRl7s0jsyJ8GOLsdmoMkJTAQnQA21egI7Bpdfo=
=HHbI
-----END PGP SIGNATURE-----
Merge tag 'stable/for-linus-4.0-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen regression fixes from David Vrabel:
"Fix two regressions in the balloon driver's use of memory hotplug when
used in a PV guest"
* tag 'stable/for-linus-4.0-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/balloon: before adding hotplugged memory, set frames to invalid
x86/xen: prepare p2m list for memory hotplug
Conflicts:
drivers/net/usb/asix_common.c
drivers/net/usb/sr9800.c
drivers/net/usb/usbnet.c
include/linux/usb/usbnet.h
net/ipv4/tcp_ipv4.c
net/ipv6/tcp_ipv6.c
The TCP conflicts were overlapping changes. In 'net' we added a
READ_ONCE() to the socket cached RX route read, whilst in 'net-next'
Eric Dumazet touched the surrounding code dealing with how mini
sockets are handled.
With USB, it's a case of the same bug fix first going into net-next
and then I cherry picked it back into net.
Signed-off-by: David S. Miller <davem@davemloft.net>
Some of the CYCLE_ACTIVITY.* events can only be scheduled on
counter 2. Due to a typo Haswell matched those with
INTEL_EVENT_CONSTRAINT, which lead to the events never
matching as the comparison does not expect anything
in the umask too. Fix the typo.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1425925222-32361-1-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
For supporting Intel LBR branches filtering, Intel LBR sharing logic
mechanism is introduced from commit b36817e886 ("perf/x86: Add Intel
LBR sharing logic"). It modifies __intel_shared_reg_get_constraints() to
config lbr_sel, which is finally used to set LBR_SELECT.
However, the intel_shared_regs_constraints() function is called after
intel_pebs_constraints(). The PEBS event will return immediately after
intel_pebs_constraints(). So it's impossible to filter branches for PEBS
events.
This patch moves intel_shared_regs_constraints() ahead of
intel_pebs_constraints().
We can safely do that because the intel_shared_regs_constraints() function
only returns empty constraint if its rejecting the event, otherwise it
returns NULL such that we continue calling intel_pebs_constraints() and
x86_get_event_constraint().
Signed-off-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: eranian@google.com
Link: http://lkml.kernel.org/r/1427467105-9260-1-git-send-email-kan.liang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This patch fixes an error in kgdb for x86_64 which would report
the value of dx when asked to give the value of si.
Signed-off-by: Steffen Liebergeld <steffen.liebergeld@kernkonzept.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
When I wrote the opportunistic SYSRET code, I missed an important difference
between SYSRET and IRET.
Both instructions are capable of setting EFLAGS.TF, but they behave differently
when doing so:
- IRET will not issue a #DB trap after execution when it sets TF.
This is critical -- otherwise you'd never be able to make forward progress when
returning to userspace.
- SYSRET, on the other hand, will trap with #DB immediately after
returning to CPL3, and the next instruction will never execute.
This breaks anything that opportunistically SYSRETs to a user
context with TF set. For example, running this code with TF set
and a SIGTRAP handler loaded never gets past 'post_nop':
extern unsigned char post_nop[];
asm volatile ("pushfq\n\t"
"popq %%r11\n\t"
"nop\n\t"
"post_nop:"
: : "c" (post_nop) : "r11");
In my defense, I can't find this documented in the AMD or Intel manual.
Fix it by using IRET to restore TF.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 2a23c6b8a9 ("x86_64, entry: Use sysret to return to userspace when possible")
Link: http://lkml.kernel.org/r/9472f1ca4c19a38ecda45bba9c91b7168135fcfa.1427923514.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The ASRock Q1900DC-ITX mainboard (Baytrail-D) hangs randomly in
both BIOS and UEFI mode while rebooting unless reboot=pci is
used. Add a quirk to reboot via the pci method.
The problem is very intermittent and hard to debug, it might succeed
rebooting just fine 40 times in a row - but fails half a dozen times
the next day. It seems to be slightly less common in BIOS CSM mode
than native UEFI (with the CSM disabled), but it does happen in either
mode. Since I've started testing this patch in late january, rebooting
has been 100% reliable.
Most of the time it already hangs during POST, but occasionally it
might even make it through the bootloader and the kernel might even
start booting, but then hangs before the mode switch. The same symptoms
occur with grub-efi, gummiboot and grub-pc, just as well as (at least)
kernel 3.16-3.19 and 4.0-rc6 (I haven't tried older kernels than 3.16).
Upgrading to the most current mainboard firmware of the ASRock
Q1900DC-ITX, version 1.20, does not improve the situation.
( Searching the web seems to suggest that other Bay Trail-D mainboards
might be affected as well. )
--
Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Cc: <stable@vger.kernel.org>
Cc: Matt Fleming <matt.fleming@intel.com>
Link: http://lkml.kernel.org/r/20150330224427.0fb58e42@mir
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Space allocated for paca is based off nr_cpu_ids,
but pnv_alloc_idle_core_states() iterates paca with
cpu_nr_cores()*threads_per_core, which is using NR_CPUS.
This causes pnv_alloc_idle_core_states() to write over memory,
which is outside of paca array and may later lead to various panics.
Fixes: 7cba160ad7 (powernv/cpuidle: Redesign idle states management)
Signed-off-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This driver is 64 bit only, and so this driver and device are ready
for 2038. This patch changes the driver to the new PHC and also
carries the timespec64 parameter on out to the gxio_mpipe_get-
set_timestamp functions, making explicit the fact that the tv_sec
field is 64 bits wide.
Not even compile tested.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Chris Metcalf <cmetcalf@ezchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The latest and greatest fixes for ARM platform code. Worth pointing out are:
- Lines-wise, largest is a PXA fix for dealing with interrupts on DT that was
quite broken. It's still newish code so while we could have held this off,
it seemed appropriate to include now
- Some GPIO fixes for OMAP platforms added a few lines. This was also fixes for
code recently added (this release).
- Small OMAP timer fix to behave better with partially upstreamed platforms,
which is quite welcome.
- Allwinner fixes about operating point control, reducing overclocking in some
cases for better stability.
+ a handful of other smaller fixes across the map.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=OclH
-----END PGP SIGNATURE-----
Merge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"The latest and greatest fixes for ARM platform code. Worth pointing
out are:
- Lines-wise, largest is a PXA fix for dealing with interrupts on DT
that was quite broken. It's still newish code so while we could
have held this off, it seemed appropriate to include now
- Some GPIO fixes for OMAP platforms added a few lines. This was
also fixes for code recently added (this release).
- Small OMAP timer fix to behave better with partially upstreamed
platforms, which is quite welcome.
- Allwinner fixes about operating point control, reducing
overclocking in some cases for better stability.
plus a handful of other smaller fixes across the map"
* tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm64: juno: Fix misleading name of UART reference clock
ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
ARM: socfpga: dts: fix spi1 interrupt
ARM: dts: Fix gpio interrupts for dm816x
ARM: dts: dra7: remove ti,hwmod property from pcie phy
ARM: OMAP: dmtimer: disable pm runtime on remove
ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
ARM: OMAP2+: Fix socbus family info for AM33xx devices
ARM: dts: omap3: Add missing dmas for crypto
ARM: dts: rockchip: disable gmac by default in rk3288.dtsi
MAINTAINERS: add rockchip regexp to the ARM/Rockchip entry
ARM: pxa: fix pxa interrupts handling in DT
ARM: pxa: Fix typo in zeus.c
ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage
There's a few fixes to merge for 4.0, one to add a select in the machine
Kconfig option to fix a potential build failure, and two fixing cpufreq related
issues.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=e6O1
-----END PGP SIGNATURE-----
Merge tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into fixes
Allwinner fixes for 4.0
There's a few fixes to merge for 4.0, one to add a select in the machine
Kconfig option to fix a potential build failure, and two fixing cpufreq related
issues.
* tag 'sunxi-fixes-for-4.0' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage
Signed-off-by: Olof Johansson <olof@lixom.net>
- Fix a device tree based booting vs legacy booting regression for
omap3 crypto hardware by adding the missing DMA channels.
- Fix /sys/bus/soc/devices/soc0/family for am33xx devices.
- Fix two timer issues that can cause hangs if the timer related
hwmod data is missing like it often initially is for new SoCs.
- Remove pcie hwmods entry from dts as that causes runtime PM to
fail for the PHYs.
- A paper bag type dts configuration fix for dm816x GPIO
interrupts that I just noticed. This is most of the changes
diffstat wise, but as it's a basic feature for connecting
devices and things work otherwise, it should be fixed.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=eCH/
-----END PGP SIGNATURE-----
Merge tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Fixes for omaps for the -rc cycle:
- Fix a device tree based booting vs legacy booting regression for
omap3 crypto hardware by adding the missing DMA channels.
- Fix /sys/bus/soc/devices/soc0/family for am33xx devices.
- Fix two timer issues that can cause hangs if the timer related
hwmod data is missing like it often initially is for new SoCs.
- Remove pcie hwmods entry from dts as that causes runtime PM to
fail for the PHYs.
- A paper bag type dts configuration fix for dm816x GPIO
interrupts that I just noticed. This is most of the changes
diffstat wise, but as it's a basic feature for connecting
devices and things work otherwise, it should be fixed.
* tag 'fixes-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: Fix gpio interrupts for dm816x
ARM: dts: dra7: remove ti,hwmod property from pcie phy
ARM: OMAP: dmtimer: disable pm runtime on remove
ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
ARM: OMAP2+: Fix socbus family info for AM33xx devices
ARM: dts: omap3: Add missing dmas for crypto
Signed-off-by: Olof Johansson <olof@lixom.net>
- Fix interrupt number for SPI1 interface
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=NEia
-----END PGP SIGNATURE-----
Merge tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next into fixes
Late fix for v4.0 on the SoCFPGA platform:
- Fix interrupt number for SPI1 interface
* tag 'socfpga_fix_for_v4.0_2' of git://git.rocketboards.org/linux-socfpga-next:
ARM: socfpga: dts: fix spi1 interrupt
Signed-off-by: Olof Johansson <olof@lixom.net>
The UART reference clock speed is 7273.8 kHz, not 72738 kHz.
Dots aren't usually used in node names even though ePAPR permits
them. However, this can easily be avoided by expressing the
frequency in Hz, not kHz.
This patch changes the name to refclk7273800hz, reflecting the
actual clock speed.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
There are only 2 fixes, one for the zeus board about the regulator changes,
where a typo prevented the zeus board from having a working can regulator,
and one regression triggered by the interrupts IRQ shift of 16 affecting all
boards.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=r3W0
-----END PGP SIGNATURE-----
Merge tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux into fixes
arm: pxa: fixes for v4.0-rc5
There are only 2 fixes, one for the zeus board about the regulator changes,
where a typo prevented the zeus board from having a working can regulator,
and one regression triggered by the interrupts IRQ shift of 16 affecting all
boards.
* tag 'fixes-for-v4.0-rc5' of https://github.com/rjarzmik/linux:
ARM: pxa: fix pxa interrupts handling in DT
ARM: pxa: Fix typo in zeus.c
Signed-off-by: Olof Johansson <olof@lixom.net>
Pull x86 fix from Ingo Molnar:
"Fix x86 syscall exit code bug that resulted in spurious non-execution
of TIF-driven user-return worklets, causing big trouble for things
like KVM that rely on user notifiers for correctness of their vcpu
model, causing crashes like double faults"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/asm/entry: Check for syscall exit work with IRQs disabled
Pull parsic fixes from Helge Deller:
"One patch from Mikulas fixes a bug on parisc by artifically
incrementing the counter in pmd_free when the kernel tries to free
the preallocated pmd.
Other than that we now prevent that syscalls gets added without
incrementing __NR_Linux_syscalls and fix the initial pmd setup code
if a default page size greater than 4k has been selected"
* 'parisc-4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix pmd code to depend on PT_NLEVELS value, not on CONFIG_64BIT
parisc: mm: don't count preallocated pmds
parisc: Add compile-time check when adding new syscalls
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=zVXd
-----END PGP SIGNATURE-----
Merge tag 'arc-4.0-fixes-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
"We found some issues with signal handling taking down the system. I
know its late, but these are important and all marked for stable.
ARC signal handling related fixes uncovered during recent testing of
NPTL tools"
* tag 'arc-4.0-fixes-part-2' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: signal handling robustify
ARC: SA_SIGINFO ucontext regs off-by-one
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull s390 fixes from Martin Schwidefsky:
"A couple of bug fixes for s390.
The ftrace comile fix is quite large for a -rc6 release, but it would
be nice to have it in 4.0"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/smp: reenable smt after resume
s390/mm: limit STACK_RND_MASK for compat tasks
s390/ftrace: fix compile error if CONFIG_KPROBES is disabled
s390/cpum_sf: add diagnostic sampling event only if it is authorized
A malicious signal handler / restorer can DOS the system by fudging the
user regs saved on stack, causing weird things such as sigreturn returning
to user mode PC but cpu state still being kernel mode....
Ensure that in sigreturn path status32 always has U bit; any other bogosity
(gargbage PC etc) will be taken care of by normal user mode exceptions mechanisms.
Reproducer signal handler:
void handle_sig(int signo, siginfo_t *info, void *context)
{
ucontext_t *uc = context;
struct user_regs_struct *regs = &(uc->uc_mcontext.regs);
regs->scratch.status32 = 0;
}
Before the fix, kernel would go off to weeds like below:
--------->8-----------
[ARCLinux]$ ./signal-test
Path: /signal-test
CPU: 0 PID: 61 Comm: signal-test Not tainted 4.0.0-rc5+ #65
task: 8f177880 ti: 5ffe6000 task.ti: 8f15c000
[ECR ]: 0x00220200 => Invalid Write @ 0x00000010 by insn @ 0x00010698
[EFA ]: 0x00000010
[BLINK ]: 0x2007c1ee
[ERET ]: 0x10698
[STAT32]: 0x00000000 : <--------
BTA: 0x00010680 SP: 0x5ffe7e48 FP: 0x00000000
LPS: 0x20003c6c LPE: 0x20003c70 LPC: 0x00000000
...
--------->8-----------
Reported-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
The regfile provided to SA_SIGINFO signal handler as ucontext was off by
one due to pt_regs gutter cleanups in 2013.
Before handling signal, user pt_regs are copied onto user_regs_struct and copied
back later. Both structs are binary compatible. This was all fine until
commit 2fa919045b (ARC: pt_regs update #2) which removed the empty stack slot
at top of pt_regs (corresponding to first pad) and made the corresponding
fixup in struct user_regs_struct (the pad in there was moved out of
@scratch - not removed altogether as it is part of ptrace ABI)
struct user_regs_struct {
+ long pad;
struct {
- long pad;
long bta, lp_start, lp_end,....
} scratch;
...
}
This meant that now user_regs_struct was off by 1 reg w.r.t pt_regs and
signal code needs to user_regs_struct.scratch to reflect it as pt_regs,
which is what this commit does.
This problem was hidden for 2 years, because both save/restore, despite
using wrong location, were using the same location. Only an interim
inspection (reproducer below) exposed the issue.
void handle_segv(int signo, siginfo_t *info, void *context)
{
ucontext_t *uc = context;
struct user_regs_struct *regs = &(uc->uc_mcontext.regs);
printf("regs %x %x\n", <=== prints 7 8 (vs. 8 9)
regs->scratch.r8, regs->scratch.r9);
}
int main()
{
struct sigaction sa;
sa.sa_sigaction = handle_segv;
sa.sa_flags = SA_SIGINFO;
sigemptyset(&sa.sa_mask);
sigaction(SIGSEGV, &sa, NULL);
asm volatile(
"mov r7, 7 \n"
"mov r8, 8 \n"
"mov r9, 9 \n"
"mov r10, 10 \n"
:::"r7","r8","r9","r10");
*((unsigned int*)0x10) = 0;
}
Fixes: 2fa919045b "ARC: pt_regs update #2: Remove unused gutter at start of pt_regs"
CC: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
struct kiocb now is a generic I/O container, so move it to fs.h.
Also do a #include diet for aio.h while we're at it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This is another single fix, for an include dependency problem when using
ioremap_wc() from asm/io.h without also including asm/pgtable.h.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=gsz4
-----END PGP SIGNATURE-----
Merge tag 'metag-fixes-v4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag
Pull arch/metag fix from James Hogan:
"Another metag architecture fix for v4.0
This is another single fix, for an include dependency problem when
using ioremap_wc() from asm/io.h without also including asm/pgtable.h"
* tag 'metag-fixes-v4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
metag: Fix ioremap_wc/ioremap_cached build errors
The irqclass_sub_desc array and enum interruption_class are out of sync
thus /proc/interrupts is broken. Remove IRQIO_CLW.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
After a suspend/resume cycle we missed to enable smt again, which leads
to all sorts of bugs, since the kernel assumes smt is enabled, while the
hardware thinks it is not.
Reported-and-tested-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reported-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
- switch_mm() fix where init_mm.pgd ends up in the user TTBR0;
swapper_pg_dir is not suitable for user mappings
- this_cpu accessors fix for preemption safety
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=MQxz
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull two arm64 fixes from Catalin Marinas:
- switch_mm() fix where init_mm.pgd ends up in the user TTBR0;
swapper_pg_dir is not suitable for user mappings
- this_cpu accessors fix for preemption safety
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: percpu: Make this_cpu accessors pre-empt safe
arm64: Use the reserved TTBR0 if context switching to the init_mm
- Fix the MCE code to use CONFIG_KVM_BOOK3S_64_HANDLER
- Little endian fixes for post mobility device tree update
- Add PVR for POWER8NVL processor
- Fixes for hypervisor doorbell handling
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=ZvQl
-----END PGP SIGNATURE-----
Merge tag 'powerpc-4.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc fixes from Michael Ellerman:
- Fix the MCE code to use CONFIG_KVM_BOOK3S_64_HANDLER
- Little endian fixes for post mobility device tree update
- Add PVR for POWER8NVL processor
- Fixes for hypervisor doorbell handling
* tag 'powerpc-4.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
powerpc/book3s: Fix the MCE code to use CONFIG_KVM_BOOK3S_64_HANDLER
powerpc/pseries: Little endian fixes for post mobility device tree update
powerpc: Add PVR for POWER8NVL processor
powerpc/powernv: Fixes for hypervisor doorbell handling
Without proper regulator support for individual boards, it is dangerous
to have overclocked/overvoltaged OPPs in the list. Cpufreq will increase
the frequency without the accompanying voltage increase, resulting in
an unstable system.
Remove them for now. We can revisit them with the new version of OPP
bindings, which support boost settings and frequency ranges, among
other things.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The Olimex A10-Lime is known to be unstable when running at 1008MHz.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
We currently have a race: if we're preempted during syscall
exit, we can fail to process syscall return work that is queued
up while we're preempted in ret_from_sys_call after checking
ti.flags.
Fix it by disabling interrupts before checking ti.flags.
Reported-by: Stefan Seyfried <stefan.seyfried@googlemail.com>
Reported-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Fixes: 96b6352c12 ("x86_64, entry: Remove the syscall exit audit")
Link: http://lkml.kernel.org/r/189320d42b4d671df78c10555976bb10af1ffc75.1427137498.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
this_cpu operations were implemented for arm64 in:
5284e1b arm64: xchg: Implement cmpxchg_double
f97fc81 arm64: percpu: Implement this_cpu operations
Unfortunately, it is possible for pre-emption to take place between
address generation and data access. This can lead to cases where data
is being manipulated by this_cpu for a different CPU than it was
called on. Which effectively breaks the spec.
This patch disables pre-emption for the this_cpu operations
guaranteeing that address generation and data manipulation take place
without a pre-emption in-between.
Fixes: 5284e1b4bc ("arm64: xchg: Implement cmpxchg_double")
Fixes: f97fc81079 ("arm64: percpu: Implement this_cpu operations")
Reported-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Steve Capper <steve.capper@linaro.org>
[catalin.marinas@arm.com: remove space after type cast]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Conflicts:
net/netfilter/nf_tables_core.c
The nf_tables_core.c conflict was resolved using a conflict resolution
from Stephen Rothwell as a guide.
Signed-off-by: David S. Miller <davem@davemloft.net>
kvm_ioapic_update_eoi() wasn't called if directed EOI was enabled.
We need to do that for irq notifiers. (Like with edge interrupts.)
Fix it by skipping EOI broadcast only.
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=82211
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
The idle_task_exit() function may call switch_mm() with next ==
&init_mm. On arm64, init_mm.pgd cannot be used for user mappings, so
this patch simply sets the reserved TTBR0.
Cc: <stable@vger.kernel.org>
Reported-by: Jon Medhurst (Tixy) <tixy@linaro.org>
Tested-by: Jon Medhurst (Tixy) <tixy@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Pull sparc fixes from David Miller:
"Some perf bug fixes from David Ahern, and the fix for that nasty
memmove() bug"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: Fix several bugs in memmove().
sparc: Touch NMI watchdog when walking cpus and calling printk
sparc: perf: Add support M7 processor
sparc: perf: Make counting mode actually work
sparc: perf: Remove redundant perf_pmu_{en|dis}able calls
Firstly, handle zero length calls properly. Believe it or not there
are a few of these happening during early boot.
Next, we can't just drop to a memcpy() call in the forward copy case
where dst <= src. The reason is that the cache initializing stores
used in the Niagara memcpy() implementations can end up clearing out
cache lines before we've sourced their original contents completely.
For example, considering NG4memcpy, the main unrolled loop begins like
this:
load src + 0x00
load src + 0x08
load src + 0x10
load src + 0x18
load src + 0x20
store dst + 0x00
Assume dst is 64 byte aligned and let's say that dst is src - 8 for
this memcpy() call. That store at the end there is the one to the
first line in the cache line, thus clearing the whole line, which thus
clobbers "src + 0x28" before it even gets loaded.
To avoid this, just fall through to a simple copy only mildly
optimized for the case where src and dst are 8 byte aligned and the
length is a multiple of 8 as well. We could get fancy and call
GENmemcpy() but this is good enough for how this thing is actually
used.
Reported-by: David Ahern <david.ahern@oracle.com>
Reported-by: Bob Picco <bpicco@meloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 054954eb05 ("xen: switch to linear
virtual mapped sparse p2m list") introduced a regression regarding to
memory hotplug for a pv-domain: as the virtual space for the p2m list
is allocated for the to be expected memory size of the domain only,
hotplugged memory above that size will not be usable by the domain.
Correct this by using a configurable size for the p2m list in case of
memory hotplug enabled (default supported memory size is 512 GB for
64 bit domains and 4 GB for 32 bit domains).
Signed-off-by: Juergen Gross <jgross@suse.com>
Cc: <stable@vger.kernel.org> # 3.19+
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
