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Pull MIPS fixes from Ralf Baechle:
"Resurrect Alchemy platforms by invoking the WAIT instructions with
interrupts enabled. This still leaves the race condition between
testing TIF_NEED_RESCHED and the WAIT instruction for Alchemy
platforms which need a different fix than other MIPS platforms. But
at least it gets MIPS platforms flying again.
There are also fixes for two build errors (CONFIG_FTRACE=y with
CONFIG_DYNAMIC_FTRACE=n) and CONFIG_VIRTUALIZATION without CONFIG_KVM"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: ftrace: Add missing CONFIG_DYNAMIC_FTRACE
MIPS: include: mmu_context.h: Replace VIRTUALIZATION with KVM
MIPS: Alchemy: fix wait function
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Pull kvm bugfixes from Gleb Natapov:
"There is one more fix for MIPS KVM ABI here, MIPS and PPC build
breakage fixes and a couple of PPC bug fixes"
* 'fixes' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm/ppc/booke64: Fix lazy ee handling in kvmppc_handle_exit()
kvm/ppc/booke: Hold srcu lock when calling gfn functions
kvm/ppc/booke64: Disable e6500 support
kvm/ppc/booke64: Fix AltiVec interrupt numbers and build breakage
mips/kvm: Use KVM_REG_MIPS and proper size indicators for *_ONE_REG
kvm: Add definition of KVM_REG_MIPS
KVM: add kvm_para_available to asm-generic/kvm_para.h
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EE is hard-disabled on entry to kvmppc_handle_exit(), so call
hard_irq_disable() so that PACA_IRQ_HARD_DIS is set, and soft_enabled
is unset.
Without this, we get warnings such as arch/powerpc/kernel/time.c:300,
and sometimes host kernel hangs.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
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KVM core expects arch code to acquire the srcu lock when calling
gfn_to_memslot and similar functions.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
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The previous patch made 64-bit booke KVM build again, but Altivec
support is still not complete, and we can't prevent the guest from
turning on Altivec (which can corrupt host state until state
save/restore is implemented). Disable e6500 on KVM until this is
fixed.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
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Interrupt numbers defined for Book3E follows IVORs definition. Align
BOOKE_INTERRUPT_ALTIVEC_UNAVAIL and BOOKE_INTERRUPT_ALTIVEC_ASSIST to this
rule which also fixes the build breakage.
IVORs 32 and 33 are shared so reflect this in the interrupts naming.
This fixes a build break for 64-bit booke KVM.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
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The API requires that the GET_ONE_REG and SET_ONE_REG ioctls have this
extra information encoded in the register identifiers.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull xen fixes from Konrad Rzeszutek Wilk:
"Two bug-fixes for regressions:
- xen/tmem stopped working after a certain combination of
modprobe/swapon was used
- cpu online/offlining would trigger WARN_ON."
* tag 'stable/for-linus-3.10-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/tmem: Don't over-write tmem_frontswap_poolid after tmem_frontswap_init set it.
xen/smp: Fixup NOHZ per cpu data when onlining an offline CPU.
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arch_ftrace_update_code and ftrace_modify_all_code are only
available if CONFIG_DYNAMIC_FTRACE is selected.
Fixes the following build problem on MIPS randconfig:
arch/mips/kernel/ftrace.c: In function 'arch_ftrace_update_code':
arch/mips/kernel/ftrace.c:31:2: error: implicit declaration of function
'ftrace_modify_all_code' [-Werror=implicit-function-declaration]
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5435/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The kvm_* symbols are only available if KVM is selected.
Fixes the following linking problem on a randconfig:
arch/mips/built-in.o: In function `local_flush_tlb_mm':
(.text+0x18a94): undefined reference to `kvm_local_flush_tlb_all'
arch/mips/built-in.o: In function `local_flush_tlb_range':
(.text+0x18d0c): undefined reference to `kvm_local_flush_tlb_all'
kernel/built-in.o: In function `__schedule':
core.c:(.sched.text+0x2a00): undefined reference to `kvm_local_flush_tlb_all'
mm/built-in.o: In function `use_mm':
(.text+0x30214): undefined reference to `kvm_local_flush_tlb_all'
fs/built-in.o: In function `flush_old_exec':
(.text+0xf0a0): undefined reference to `kvm_local_flush_tlb_all'
make: *** [vmlinux] Error 1
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Acked-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5437/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Only an interrupt can wake the core from 'wait', enable interrupts
locally before executing 'wait'.
[ralf@linux-mips.org: This leave the race between an interrupt that's
setting TIF_NEED_RESCHEd and entering the WAIT status. but at least it's
going to bring Alchemy back from the dead, so I'm going to apply this
patch.]
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/5408/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fixes from Benjamin Herrenschmidt:
"This is purely regressions (though not all recent ones) or stable
material"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Partial revert of "Context switch more PMU related SPRs"
powerpc/perf: Fix deadlock caused by calling printk() in PMU exception
powerpc/hw_breakpoints: Add DABRX cpu feature to fix 32-bit regression
powerpc/power8: Update denormalization handler
powerpc/pseries: Simplify denormalization handler
powerpc/power8: Fix oprofile and perf
powerpc/eeh: Don't check RTAS token to get PE addr
powerpc/pci: Check the bus address instead of resource address in pcibios_fixup_resources
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Pull ARM fixes from Russell King:
"The biggest two fixes are fixing a compilation error with the
decompressor, and a problem with our __my_cpu_offset implementation.
Other changes are very trivial and small, which seems to be the way
for most -rc stuff."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7747/1: pcpu: ensure __my_cpu_offset cannot be re-ordered across barrier()
ARM: 7750/1: update legacy CPU ID in decompressor cache support jump table
ARM: 7743/1: compressed/head.S: work around new binutils warning
ARM: 7742/1: topology: export cpu_topology
ARM: 7737/1: fix kernel decompressor compilation error with CONFIG_DEBUG_SEMIHOSTING
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In commit 59affcd I added context switching of more PMU SPRs, because
they are potentially exposed to userspace on Power8. However despite me
being a smart arse in the commit message it's actually not correct. In
particular it interacts badly with a global perf record.
We will have to do something more complicated, but that will have to
wait for 3.11.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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In commit bc09c21 "Fix finding overflowed PMC in interrupt" we added
a printk() to the PMU exception handler. Unfortunately that is not safe.
The problem is that the PMU exception may run even when interrupts are
soft disabled, aka NMI context. We do this so that we can profile parts
of the kernel that have interrupts soft-disabled.
But by calling printk() from the exception handler, we can potentially
deadlock in the printk code on logbuf_lock, eg:
[c00000038ba575c0] c000000000081928 .vprintk_emit+0xa8/0x540
[c00000038ba576a0] c0000000007bcde8 .printk+0x48/0x58
[c00000038ba57710] c000000000076504 .perf_event_interrupt+0x2d4/0x490
[c00000038ba57810] c00000000001f6f8 .performance_monitor_exception+0x48/0x60
[c00000038ba57880] c0000000000032cc performance_monitor_common+0x14c/0x180
--- Exception: f01 (Performance Monitor) at c0000000007b25d4 ._raw_spin_lock_irq
+0x64/0xc0
[c00000038ba57bf0] c00000000007ed90 .devkmsg_read+0xd0/0x5a0
[c00000038ba57d00] c0000000001c2934 .vfs_read+0xc4/0x1e0
[c00000038ba57d90] c0000000001c2cd8 .SyS_read+0x58/0xd0
[c00000038ba57e30] c000000000009d54 syscall_exit+0x0/0x98
--- Exception: c01 (System Call) at 00001fffffbf6f7c
SP (3ffff6d4de10) is in userspace
Fix it by making sure we only call printk() when we are not in NMI
context.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Cc: <stable@vger.kernel.org> # 3.9
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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When introducing support for DABRX in 4474ef0, we broke older 32-bit CPUs
that don't have that register.
Some CPUs have a DABR but not DABRX. Configuration are:
- No 32bit CPUs have DABRX but some have DABR.
- POWER4+ and below have the DABR but no DABRX.
- 970 and POWER5 and above have DABR and DABRX.
- POWER8 has DAWR, hence no DABRX.
This introduces CPU_FTR_DABRX and sets it on appropriate CPUs. We use
the top 64 bits for CPU FTR bits since only 64 bit CPUs have this.
Processors that don't have the DABRX will still work as they will fall
back to software filtering these breakpoints via perf_exclude_event().
Signed-off-by: Michael Neuling <mikey@neuling.org>
Reported-by: "Gorelik, Jacob (335F)" <jacob.gorelik@jpl.nasa.gov>
cc: stable@vger.kernel.org (v3.9 only)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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POWER8 can take a denormalisation exception on any VSX registers.
This does the extra 32 VSX registers we don't currently handle.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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The following simplifies the denorm code by using macros to generate the long
stream of almost identical instructions.
This patch results in no changes to the output binary, but removes a lot of
lines of code.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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In 2ac6f42 powerpc/cputable: Fix oprofile_cpu_type on power8
we broke all power8 hw events.
This reverts this change and uses oprofile_type instead. Perf now works
on POWER8 again and oprofile will revert to using timers on POWER8.
Kudos to mpe this fix.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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RTAS token "ibm,get-config-addr-info" or ibm,get-config-addr-info2"
are used to retrieve the PE address according to PCI address, which
made up of domain/bus/slot/function. If we don't have those 2 tokens,
the domain/bus/slot/function would be used as the address for EEH
RTAS operations. Some older f/w might not have those 2 tokens and
that blocks the EEH functionality to be initialized. It was introduced
by commit e2af155c ("powerpc/eeh: pseries platform EEH initialization").
The patch skips the check on those 2 tokens so we can bring up EEH
functionality successfully. And domain/bus/slot/function will be
used as address for EEH RTAS operations.
Cc: <stable@vger.kernel.org> # v3.4+
Reported-by: Robert Knight <knight@princeton.edu>
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Tested-by: Robert Knight <knight@princeton.edu>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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pcibios_fixup_resources
If a BAR has the value of 0, we would assume that it is unset yet and
then mark the resource as unset and would reassign it later. But after
commit 6c5705fe (powerpc/PCI: get rid of device resource fixups)
the pcibios_fixup_resources is invoked after the bus address was
translated to linux resource. So the value of res->start is resource
address. And since the resource and bus address may be different, we
should translate it to the bus address before doing the check.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Another week, another batch of fixes for arm-soc platforms.
Nothing controversial here, a handful of fixes for regressions and/or
serious problems across several of the platforms. Things are slowing
down nicely on fix rates for 3.10"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: exynos: add debug_ll_io_init() call in exynos_init_io()
ARM: EXYNOS: uncompress - print debug messages if DEBUG_LL is defined
ARM: shmobile: sh73a0: Update CMT clockevent rating to 80
sh-pfc: r8a7779: Don't group USB OVC and PENC pins
ARM: mxs: icoll: Fix interrupts gpio bank 0
ARM: imx: clk-imx6q: AXI clock select index is incorrect
ARM: bcm2835: override the HW UART periphid
ARM: mvebu: Fix bug in coherency fabric low level init function
ARM: Kirkwood: TS219: Fix crash by double PCIe instantiation
ARM: ux500: Provide supplies for AUX1, AUX2 and AUX3
ARM: ux500: Only configure wake-up reasons on ux500 based platforms
ARM: dts: imx: fix clocks for cspi
ARM i.MX6q: fix for ldb_di_sels
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Pull MIPS fixes from Ralf Baechle:
"MIPS fixes across the field. The only area that's standing out is the
exception handling which received it's dose of breakage as part of the
microMIPS patchset"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: ralink: add missing SZ_1M multiplier
MIPS: Compat: Fix cputime_to_timeval() arguments in compat binfmt_elf.
MIPS: OCTEON: Improve _machine_halt implementation.
MIPS: rtlx: Fix implicit declaration of function set_vi_handler()
MIPS: Trap exception handling fixes
MIPS: Quit exposing Kconfig symbols in uapi headers.
MIPS: Remove duplicate definition of check_for_high_segbits.
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu fix from Greg Ungerer:
"A single fix for compilation breakage to many of the ColdFire CPU
targets"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: only use local gpio_request_one if not using GPIOLIB
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git://git.linaro.org/people/shawnguo/linux-2.6 into fixes
From Shawn Guo, imx fixes for 3.10, take 2:
- One device tree fix for all spi node to have per clock added.
The clock is needed by spi driver to calculate bit rate divisor.
The spi node in the current device trees either does not have the
clock or is defined as dummy clock, in which case the driver probe
will fail or spi will run at a wrong bit rate.
- Two imx6q clock fixes, which correct axi_sels and ldb_di_sels.
* tag 'imx-fixes-3.10-2' of git://git.linaro.org/people/shawnguo/linux-2.6:
ARM: imx: clk-imx6q: AXI clock select index is incorrect
ARM: dts: imx: fix clocks for cspi
ARM i.MX6q: fix for ldb_di_sels
Signed-off-by: Olof Johansson <olof@lixom.net>
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If the early MMU mapping of the UART happens to get booted out of the
TLB between the start of paging_init() and when we finally re-add the
UART at the very end of s3c_init_cpu(), we'll get a hang at bootup if
we've got early_printk enabled. Avoid this hang by calling
debug_ll_io_init() early.
Without this patch, you can reliably reproduce a hang when early
printk is enabled by adding flush_tlb_all() at the start of
exynos_init_io(). After this patch the hang goes away.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
From Simon Horman, Renesas ARM based SoC fixes for v3.10:
- Correction to USB OVC and PENC pin groupings on r8a7779 SoC.
This avoids conflicts when the USB_OVCn pins are used by another function.
This has been observed to be a problem in v3.10-rc1.
- Update CMT clock rating for sh73a0 SoC to resolve boot failure
on kzm9g-reference. This resolves a regression between v3.9 and v3.10-rc1.
* tag 'renesas-fixes-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: sh73a0: Update CMT clockevent rating to 80
sh-pfc: r8a7779: Don't group USB OVC and PENC pins
Signed-off-by: Olof Johansson <olof@lixom.net>
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Printing low-level debug messages make an assumption that the specified
UART port has been preconfigured by the bootloader. Incorrectly
specified UART port results in system getting stalled while printing the
message "Uncompressing Linux... done, booting the kernel"
This UART port number is specified through S3C_LOWLEVEL_UART_PORT. Since
the UART port might different for different board, it is not possible to
specify it correctly for every board that use a common defconfig file.
Calling this print subroutine only when DEBUG_LL fixes the problem. By
disabling DEBUG_LL in default config file, we would be able to boot
multiple boards with different default UART ports.
With this current approach, we miss the print "Uncompressing Linux...
done, booting the kernel." when DEBUG_LL is not defined.
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"This fixes a crash when booting a 32-bit kernel via the EFI boot stub.
PCI ROM from EFI
x86/PCI: Map PCI setup data with ioremap() so it can be in highmem"
* tag 'pci-v3.10-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
x86/PCI: Map PCI setup data with ioremap() so it can be in highmem
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On RT5350 the memory size is set to Bytes and not MegaBytes due to a missing
multiplier.
Signed-off-by: John Crispin <blogic@openwrt.org>
Cc: John Crispin <blogic@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/5378/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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cputime_to_timeval() takes a struct timeval *as its second argument but
a struct compat_timeval * will be passed resulting in:
CC arch/mips/kernel/binfmt_elfn32.o
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c: In function ‘fill_prstatus’:
arch/mips/kernel/../../../fs/binfmt_elf.c:1330:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1331:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1336:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1337:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1339:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfn32.c:122:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1340:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfn32.c:55:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
AS arch/mips/kernel/scall64-n32.o
CC arch/mips/kernel/signal_n32.o
CC arch/mips/kernel/binfmt_elfo32.o
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c: In function ‘fill_prstatus’:
arch/mips/kernel/../../../fs/binfmt_elf.c:1330:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1331:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1336:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1337:3: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1339:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
In file included from arch/mips/kernel/binfmt_elfo32.c:165:0:
arch/mips/kernel/../../../fs/binfmt_elf.c:1340:2: warning: passing argument 2 of ‘cputime_to_timeval’ from incompatible pointer type [enabled by default]
In file included from include/asm-generic/cputime.h:12:0,
from /home/ralf/src/linux/linux-mips/arch/mips/include/asm/cputime.h:4,
from include/linux/sched.h:28,
from include/linux/ptrace.h:5,
from include/uapi/linux/elfcore.h:7,
from include/linux/elfcore.h:7,
from arch/mips/kernel/binfmt_elfo32.c:78:
include/asm-generic/cputime_nsecs.h:92:91: note: expected ‘struct timeval *’ but argument is of type ‘struct compat_timeval *’
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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|
As noted by Wladislav Wiebe:
$ halt
..
Sent SIGKILL to all processes
Requesting system halt
[66.729373] System halted.
[66.733244]
[66.734761] =====================================
[66.739473] [ BUG: lock held at task exit time! ]
[66.744188] 3.8.7-0-sampleversion-fct #49 Tainted: G O
[66.750202] -------------------------------------
[66.754913] init/21479 is exiting with locks still held!
[66.760234] 1 lock held by init/21479:
[66.763990] #0: (reboot_mutex){+.+...}, at: [<ffffffff801776c8>] SyS_reboot+0xe0/0x218
[66.772165]
[66.772165] stack backtrace:
[66.776532] Call Trace:
[66.778992] [<ffffffff805780a8>] dump_stack+0x8/0x34
[66.783972] [<ffffffff801618b0>] do_exit+0x610/0xa70
[66.788948] [<ffffffff801777a8>] SyS_reboot+0x1c0/0x218
[66.794186] [<ffffffff8013d6a4>] handle_sys64+0x44/0x64
This is an alternative fix to the one sent by Wladislav. We kill the
watchdog for each CPU and then spin in WAIT with interrupts disabled.
This is the lowest power mode for the OCTEON. If we were to spin with
interrupts enabled, we would get a continual stream of warning messages
and backtraces from the lockup detector, so I chose to disable
interrupts.
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: Maxim Uvarov <muvarov@gmail.com>
Cc: Wladislav Wiebe <wladislav.kw@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/5324/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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|
arch/mips/kernel/rtlx.c: In function 'rtlx_module_init':
arch/mips/kernel/rtlx.c:523:3: error: implicit declaration of function 'set_vi_handler' [-Werror=implicit-function-declaration]
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5340/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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|
Since the introduction of preemptible mmu_gather TLB fast mode has been
broken. TLB fast mode relies on there being absolutely no concurrency;
it frees pages first and invalidates TLBs later.
However now we can get concurrency and stuff goes *bang*.
This patch removes all tlb_fast_mode() code; it was found the better
option vs trying to patch the hole by entangling tlb invalidation with
the scheduler.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Tony Luck <tony.luck@intel.com>
Reported-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
__my_cpu_offset is non-volatile, since we want its value to be cached
when we access several per-cpu variables in a row with preemption
disabled. This means that we rely on preempt_{en,dis}able to hazard
with the operation via the barrier() macro, so that we can't end up
migrating CPUs without reloading the per-cpu offset.
Unfortunately, GCC doesn't treat a "memory" clobber on a non-volatile
asm block as a side-effect, and will happily re-order it before other
memory clobbers (including those in prempt_disable()) and cache the
value. This has been observed to break the cmpxchg logic in the slub
allocator, leading to livelock in kmem_cache_alloc in mainline kernels.
This patch adds a dummy memory input operand to __my_cpu_offset,
forcing it to be ordered with respect to the barrier() macro.
Cc: <stable@vger.kernel.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
|
|
The previous mask values for the legacy ARM CPU IDs were conflicting
with the CPU ID assignments for late-generation CPUs (like the
Qualcomm MSM/QSD or Broadcom Brahma-15 processors). This change
corrects the legacy ARM CPU ID value so that the jump table can
fall-through to the appropriate cache maintenance / MMU functions.
Signed-off-by: Marc C <marc.ceeeee@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
|
|
In August 2012, Matthew Gretton-Dann checked a change into binutils
labelled "Error on obsolete & warn on deprecated registers", apparently as
part of ARMv8 support. Apparently, this was supposed to emit the message
"Warning: This coprocessor register access is deprecated in ARMv8" when
using certain mcr/mrc instructions and building for ARMv8. Unfortunately,
the message that is actually emitted appears to be '(null)', which is
less helpful in comparison.
Even more unfortunately, this is biting us on every single kernel
build with a new gas, because arch/arm/boot/compressed/head.S and some
other files in that directory are built with -march=all since kernel
commit 80cec14a8 "[ARM] Add -march=all to assembly file build in
arch/arm/boot/compressed" back in v2.6.28.
This patch reverts Russell's nice solution and instead marks the head.S
file to be built for armv7-a, which fortunately lets us build all
instructions in that file without warnings even on the broken binutils.
Without this patch, building anything results in:
arch/arm/boot/compressed/head.S: Assembler messages:
arch/arm/boot/compressed/head.S:565: Warning: (null)
arch/arm/boot/compressed/head.S:676: Warning: (null)
arch/arm/boot/compressed/head.S:698: Warning: (null)
arch/arm/boot/compressed/head.S:722: Warning: (null)
arch/arm/boot/compressed/head.S:726: Warning: (null)
arch/arm/boot/compressed/head.S:957: Warning: (null)
arch/arm/boot/compressed/head.S:996: Warning: (null)
arch/arm/boot/compressed/head.S:997: Warning: (null)
arch/arm/boot/compressed/head.S:1027: Warning: (null)
arch/arm/boot/compressed/head.S:1035: Warning: (null)
arch/arm/boot/compressed/head.S:1046: Warning: (null)
arch/arm/boot/compressed/head.S:1060: Warning: (null)
arch/arm/boot/compressed/head.S:1092: Warning: (null)
arch/arm/boot/compressed/head.S:1094: Warning: (null)
arch/arm/boot/compressed/head.S:1095: Warning: (null)
arch/arm/boot/compressed/head.S:1102: Warning: (null)
arch/arm/boot/compressed/head.S:1134: Warning: (null)
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable@vger.kernel.org
Cc: Matthew Gretton-Dann <matthew.gretton-dann@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
|
|
The cpu_topology symbol is required by any driver using the topology
interfaces, which leads to a couple of build errors:
ERROR: "cpu_topology" [drivers/net/ethernet/sfc/sfc.ko] undefined!
ERROR: "cpu_topology" [drivers/cpufreq/arm_big_little.ko] undefined!
ERROR: "cpu_topology" [drivers/block/mtip32xx/mtip32xx.ko] undefined!
The obvious solution is to export this symbol.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: stable@vger.kernel.org
Cc: Nicolas Pitre <nico@linaro.org>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
|
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CONFIG_DEBUG_SEMIHOSTING
Selecting this option produces:
AS arch/arm/boot/compressed/debug.o
arch/arm/boot/compressed/debug.S:4:33: fatal error: mach/debug-macro.S: No such file or directory
compilation terminated.
make[3]: *** [arch/arm/boot/compressed/debug.o] Error 1
The semihosting support cannot be modelled into a senduart macro as
it requires memory space for argument passing. So the
CONFIG_DEBUG_LL_INCLUDE may not have any sensible value and the include
directive should be omitted.
While at it, let's add proper semihosting output support to the
decompressor.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
|
|
f9a37be0f0 ("x86: Use PCI setup data") added support for using PCI ROM
images from setup_data. This used phys_to_virt(), which is not valid for
highmem addresses, and can cause a crash when booting a 32-bit kernel via
the EFI boot stub.
pcibios_add_device() assumes that the physical addresses stored in
setup_data are accessible via the direct kernel mapping, and that calling
phys_to_virt() is valid. This isn't guaranteed to be true on x86 where the
direct mapping range is much smaller than on x86-64.
Calling phys_to_virt() on a highmem address results in the following:
BUG: unable to handle kernel paging request at 39a3c198
IP: [<c262be0f>] pcibios_add_device+0x2f/0x90
...
Call Trace:
[<c2370c73>] pci_device_add+0xe3/0x130
[<c274640b>] pci_scan_single_device+0x8b/0xb0
[<c2370d08>] pci_scan_slot+0x48/0x100
[<c2371904>] pci_scan_child_bus+0x24/0xc0
[<c262a7b0>] pci_acpi_scan_root+0x2c0/0x490
[<c23b7203>] acpi_pci_root_add+0x312/0x42f
...
The solution is to use ioremap() instead of phys_to_virt() to map the
setup data into the kernel address space.
[bhelgaas: changelog]
Tested-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Seth Forshee <seth.forshee@canonical.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: stable@vger.kernel.org # v3.8+
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|
Pull kvm bugfixes from Gleb Natapov:
"The bulk of the fixes is in MIPS KVM kernel<->userspace ABI. MIPS KVM
is new for 3.10 and some problems were found with current ABI. It is
better to fix them now and do not have a kernel with broken one"
* 'fixes' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: Fix race in apic->pending_events processing
KVM: fix sil/dil/bpl/spl in the mod/rm fields
KVM: Emulate multibyte NOP
ARM: KVM: be more thorough when invalidating TLBs
ARM: KVM: prevent NULL pointer dereferences with KVM VCPU ioctl
mips/kvm: Use ENOIOCTLCMD to indicate unimplemented ioctls.
mips/kvm: Fix ABI by moving manipulation of CP0 registers to KVM_{G,S}ET_ONE_REG
mips/kvm: Use ARRAY_SIZE() instead of hardcoded constants in kvm_arch_vcpu_ioctl_{s,g}et_regs
mips/kvm: Fix name of gpr field in struct kvm_regs.
mips/kvm: Fix ABI for use of 64-bit registers.
mips/kvm: Fix ABI for use of FPU.
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|
Pull microblaze fixes from Michal Simek:
"One is fixing warning reported by sparse and the second warning was
reported by Geert in his build regressions/improvements status update
for -rc4."
* 'next' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Use static inline functions in cacheflush.h
microblaze: Fix sparse warnings
|
|
The xen_play_dead is an undead function. When the vCPU is told to
offline it ends up calling xen_play_dead wherin it calls the
VCPUOP_down hypercall which offlines the vCPU. However, when the
vCPU is onlined back, it resumes execution right after
VCPUOP_down hypercall.
That was OK (albeit the API for play_dead assumes that the CPU
stays dead and never returns) but with commit 4b0c0f294
(tick: Cleanup NOHZ per cpu data on cpu down) that is no longer safe
as said commit resets the ts->inidle which at the start of the
cpu_idle loop was set.
The net effect is that we get this warn:
Broke affinity for irq 16
installing Xen timer for CPU 1
cpu 1 spinlock event irq 48
------------[ cut here ]------------
WARNING: at /home/konrad/linux-linus/kernel/time/tick-sched.c:935 tick_nohz_idle_exit+0x195/0x1b0()
Modules linked in: dm_multipath dm_mod xen_evtchn iscsi_boot_sysfs
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 3.10.0-rc3upstream-00068-gdcdbe33 #1
Hardware name: BIOSTAR Group N61PB-M2S/N61PB-M2S, BIOS 6.00 PG 09/03/2009
ffffffff8193b448 ffff880039da5e60 ffffffff816707c8 ffff880039da5ea0
ffffffff8108ce8b ffff880039da4010 ffff88003fa8e500 ffff880039da4010
0000000000000001 ffff880039da4000 ffff880039da4010 ffff880039da5eb0
Call Trace:
[<ffffffff816707c8>] dump_stack+0x19/0x1b
[<ffffffff8108ce8b>] warn_slowpath_common+0x6b/0xa0
[<ffffffff8108ced5>] warn_slowpath_null+0x15/0x20
[<ffffffff810e4745>] tick_nohz_idle_exit+0x195/0x1b0
[<ffffffff810da755>] cpu_startup_entry+0x205/0x250
[<ffffffff81661070>] cpu_bringup_and_idle+0x13/0x15
---[ end trace 915c8c486004dda1 ]---
b/c ts_inidle is set to zero. Thomas suggested that we just add a workaround
to call tick_nohz_idle_enter before returning from xen_play_dead() - and
that is what this patch does and fixes the issue.
We also add the stable part b/c git commit 4b0c0f294 is on the stable
tree.
CC: stable@vger.kernel.org
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
|
|
Update the CMT clockevent rating from 125 to 80.
This resolves a boot-failure regression for kzm9g-reference in v3.10-rc1
introduced by f7db706b132f11c79ae1d74b2382e0926cf31644 ("ARM: 7674/1: smp:
Avoid dummy clockevent being preferred over real").
The patch noted above reduces the rating of dummy clockevent from 400 to 100.
This patch reduces the rating of CMT so that it is once again less than that
of the dummy clockevent.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
|
|
Using static inline functions ensure proper type checking
which also remove compilation warning for no MMU
Compilation warning:
arch/microblaze/include/asm/cacheflush.h: warning: 'addr'
may be used uninitialized in this function [-Wmaybe-uninitialized]
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k fix from Geert Uytterhoeven:
"A boot lock-up on Mac, also destined for stable"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k/mac: Fix unexpected interrupt with CONFIG_EARLY_PRINTK
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"Recent bug fixes, one of them touches a common code file.
It adds two #ifndef/#endif pairs to asm-generic/io.h to be able to
override xlate_dev_kmem_ptr and xlate_dev_mem_ptr."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/pgtable: Fix gmap notifier address
s390/dasd: fix handling of gone paths
s390/pgtable: Fix check for pgste/storage key handling
arch: s390: appldata: using strncpy() and strnlen() instead of sprintf()
s390/smp: lost IPIs on cpu hotplug
kernel: Fix s390 absolute memory access for /dev/mem
s390/dma: do not call debug_dma after free
|
|
arch/microblaze/include/asm/uaccess.h:101:3:
warning: cast removes address space of expression
arch/microblaze/include/asm/uaccess.h:107:2:
warning: cast removes address space of expression
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
|
|
apic->pending_events processing has a race that may cause INIT and
SIPI
processing to be reordered:
vpu0: vcpu1:
set INIT
test_and_clear_bit(KVM_APIC_INIT)
process INIT
set INIT
set SIPI
test_and_clear_bit(KVM_APIC_SIPI)
process SIPI
At the end INIT is left pending in pending_events. The following patch
fixes this by latching pending event before processing them.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
|
|
The x86-64 extended low-byte registers were fetched correctly from reg,
but not from mod/rm.
This fixes another bug in the boot of RHEL5.9 64-bit, but it is still
not enough.
Cc: <stable@vger.kernel.org> # 3.9
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
|
