Commit Graph

100107 Commits

Author SHA1 Message Date
Linus Torvalds
dd5957b78f SH Drivers Updates For v3.17
* Confine SH_INTC to platforms that need it
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Merge tag 'renesas-sh-drivers-for-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas

Pull SH driver fix from Simon Horman:
 "Confine SH_INTC to platforms that need it"

* tag 'renesas-sh-drivers-for-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  sh: intc: Confine SH_INTC to platforms that need it
2014-08-25 15:29:33 -07:00
Linus Torvalds
497c01dda9 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "Pretty much all across the field so with this we should be in
  reasonable shape for the upcoming -rc2"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: OCTEON: make get_system_type() thread-safe
  MIPS: CPS: Initialize EVA before bringing up VPEs from secondary cores
  MIPS: Malta: EVA: Rename 'eva_entry' to 'platform_eva_init'
  MIPS: EVA: Add new EVA header
  MIPS: scall64-o32: Fix indirect syscall detection
  MIPS: syscall: Fix AUDIT value for O32 processes on MIPS64
  MIPS: Loongson: Fix COP2 usage for preemptible kernel
  MIPS: NL: Fix nlm_xlp_defconfig build error
  MIPS: Remove race window in page fault handling
  MIPS: Malta: Improve system memory detection for '{e, }memsize' >= 2G
  MIPS: Alchemy: Fix db1200 PSC clock enablement
  MIPS: BCM47XX: Fix reboot problem on BCM4705/BCM4785
  MIPS: Remove duplicated include from numa.c
  MIPS: Add common plat_irq_dispatch declaration
  MIPS: MSP71xx: remove unused plat_irq_dispatch() argument
  MIPS: GIC: Remove useless parens from GICBIS().
  MIPS: perf: Mark pmu interupt IRQF_NO_THREAD
2014-08-25 15:28:57 -07:00
Linus Torvalds
7be141d055 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "A couple of EFI fixes, plus misc fixes all around the map"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi/arm64: Store Runtime Services revision
  firmware: Do not use WARN_ON(!spin_is_locked())
  x86_32, entry: Clean up sysenter_badsys declaration
  x86/doc: Fix the 'tlb_single_page_flush_ceiling' sysconfig path
  x86/mm: Fix sparse 'tlb_single_page_flush_ceiling' warning and make the variable read-mostly
  x86/mm: Fix RCU splat from new TLB tracepoints
2014-08-24 16:17:41 -07:00
Linus Torvalds
959dc2587d ARM: SoC fixes for 3.17-rc
A collection of fixes from this week, it's been pretty quiet and nothing
 really stands out as particularly noteworthy here -- mostly minor fixes
 across the field:
 
 - ODROID booting was fixed due to PMIC interrupts missing in DT
 - A collection of i.MX fixes
 - Minor Tegra fix for regulators
 - Rockchip fix and addition of SoC-specific mailing list to make it
   easier to find posted patches.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A collection of fixes from this week, it's been pretty quiet and
  nothing really stands out as particularly noteworthy here -- mostly
  minor fixes across the field:

   - ODROID booting was fixed due to PMIC interrupts missing in DT
   - a collection of i.MX fixes
   - minor Tegra fix for regulators
   - Rockchip fix and addition of SoC-specific mailing list to make it
     easier to find posted patches"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  bus: arm-ccn: Fix warning message
  ARM: shmobile: koelsch: Remove non-existent i2c6 pinmux
  ARM: tegra: apalis/colibri t30: fix on-module 5v0 supplies
  MAINTAINERS: add new Rockchip SoC list
  ARM: dts: rockchip: readd missing mmc0 pinctrl settings
  ARM: dts: ODROID i2c improvements
  ARM: dts: Enable PMIC interrupts on ODROID
  ARM: dts: imx6sx: fix the pad setting for uart CTS_B
  ARM: dts: i.MX53: fix apparent bug in VPU clks
  ARM: imx: correct gpu2d_axi and gpu3d_axi clock setting
  ARM: dts: imx6: edmqmx6: change enet reset pin
  ARM: dts: vf610-twr: Fix pinctrl_esdhc1 pin definitions.
  ARM: imx: remove unnecessary ARCH_HAS_OPP select
  ARM: imx: fix TLB missing of IOMUXC base address during suspend
  ARM: imx6: fix SMP compilation again
  ARM: dt: sun6i: Add #address-cells and #size-cells to i2c controller nodes
2014-08-24 15:57:00 -07:00
Geert Uytterhoeven
12266db732 ARM: shmobile: koelsch: Remove non-existent i2c6 pinmux
On r8a7791, i2c6 (aka iic3) doesn't need pinmux, but the koelsch dts
refers to non-existent pinmux configuration data:

pinmux core: sh-pfc does not support function i2c6
sh-pfc e6060000.pfc: invalid function i2c6 in map table

Remove it to fix this.

Fixes: commit 1d41f36a68 ("ARM: shmobile:
       koelsch dts: Add VDD MPU regulator for DVFS")

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Olof Johansson <olof@lixom.net>
2014-08-24 11:23:28 -07:00
Marcel Ziswiler
caa9eac5bc ARM: tegra: apalis/colibri t30: fix on-module 5v0 supplies
Working on Gigabit/PCIe support in U-Boot for Apalis T30 I realised
that the current device tree source includes for our modules only
happen to work due to referencing the on-carrier 5v0 supply from USB
which is not at all available on-module. The modules actually contain
TPS60150 charge pumps to generate the PMIC required 5 volts from the
one and only 3.3 volt module supply. This patch fixes this.

(Note: When back-porting this to v3.16 stable releases, simply drop the
change to tegra30-apalis.dtsi; that file was added in v3.17)

Cc: <stable@vger.kernel.org> #v3.16+
Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2014-08-24 11:21:19 -07:00
Olof Johansson
9d0b1f345e Pinctrl that got accidentially dropped when reorganizing the
dts files and addition of the new Rockchip list to MAINTAINERS.
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Merge tag 'v3.17-rockchip-fixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes

Merge "ARM: rockchip: fix for 3.17" from Heiko Stubner:

Pinctrl that got accidentially dropped when reorganizing the
dts files and addition of the new Rockchip list to MAINTAINERS.

* tag 'v3.17-rockchip-fixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  MAINTAINERS: add new Rockchip SoC list
  ARM: dts: rockchip: readd missing mmc0 pinctrl settings

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-08-24 11:19:58 -07:00
Heiko Stuebner
1302d32c84 ARM: dts: rockchip: readd missing mmc0 pinctrl settings
During the restructuring of the Rockchip Cortex-A9 dtsi files it seems
like the pinctrl settings vanished at some point from the mmc0 support.

This of course renders them unusable, so readd the necessary pinctrl
properties.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2014-08-23 13:21:45 +02:00
Olof Johansson
2136edf3bf Allwinner DT changes, take 2
Only a single patch in here that fixes a DTC warning.
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Merge tag 'sunxi-dt-for-3.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into fixes

Merge "Allwinner DT changes, take 2" from Maxime Ripard:

Only a single patch in here that fixes a DTC warning.

* tag 'sunxi-dt-for-3.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  ARM: dt: sun6i: Add #address-cells and #size-cells to i2c controller nodes

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-08-22 22:57:57 -07:00
Linus Torvalds
26d189b82f arm64 fixes for merge window fallout
This small set of fixes addresses a few issues introduced during the
 merge window, including:
 
   - Fix typo in I-cache detection that was causing us to treat all
     I-caches as aliasing
   - Hook up memfd_create and getrandom syscalls for native and compat
   - Revert a temporary hack for defconfig builds in -next (the audit
     tree changes didn't make it in this merge window)
   - A couple of UEFI fixes for TEXT_OFFSET fuzzing and /memreserve/
   - A simple sparsemem fix for 48-bit physical addressing
   - Small defconfig updates to get autotesters working with X-gene
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "This small set of fixes addresses a few issues introduced during the
  merge window, including:

   - fix typo in I-cache detection that was causing us to treat all
     I-caches as aliasing
   - hook up memfd_create and getrandom syscalls for native and compat
   - revert a temporary hack for defconfig builds in -next (the audit
     tree changes didn't make it in this merge window)
   - a couple of UEFI fixes for TEXT_OFFSET fuzzing and /memreserve/
   - a simple sparsemem fix for 48-bit physical addressing
   - small defconfig updates to get autotesters working with X-gene"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  Revert "arm64: Do not invoke audit_syscall_* functions if !CONFIG_AUDIT_SYSCALL"
  arm64: mm: update max pa bits to 48
  arm64: ignore DT memreserve entries when booting in UEFI mode
  arm64: configs: Enable X-Gene SATA and ethernet in defconfig
  arm64: align randomized TEXT_OFFSET on 4 kB boundary
  asm-generic: add memfd_create system call to unistd.h
  arm64: compat: wire up memfd_create and getrandom syscalls for aarch32
  arm64: fix typo in I-cache policy detection
2014-08-22 09:08:20 -07:00
Ingo Molnar
80b304fd00 * WARN_ON(!spin_is_locked()) always triggers on non-SMP machines.
Swap it for the more canonical lockdep_assert_held() which always
    does the right thing - Guenter Roeck
 
  * Assign the correct value to efi.runtime_version on arm64 so that all
    the runtime services can be invoked - Semen Protsenko
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Merge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/urgent

Pull EFI fixes from Matt Fleming:

 * WARN_ON(!spin_is_locked()) always triggers on non-SMP machines.
   Swap it for the more canonical lockdep_assert_held() which always
   does the right thing - Guenter Roeck

 * Assign the correct value to efi.runtime_version on arm64 so that all
   the runtime services can be invoked - Semen Protsenko

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-08-22 10:04:15 +02:00
Semen Protsenko
6a7519e813 efi/arm64: Store Runtime Services revision
"efi" global data structure contains "runtime_version" field which must
be assigned in order to use it later in Runtime Services virtual calls
(virt_efi_* functions).

Before this patch "runtime_version" was unassigned (0), so each
Runtime Service virtual call that checks revision would fail.

Signed-off-by: Semen Protsenko <semen.protsenko@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2014-08-22 08:45:41 +01:00
Geert Uytterhoeven
049d28048b sh: intc: Confine SH_INTC to platforms that need it
Currently the sh-intc driver is compiled on all SuperH and
non-multiplatform SH-Mobile platforms, while it's only used on a limited
number of platforms:
  - SuperH: SH2(A), SH3(A), SH4(A)(L) (all but SH5)
  - ARM: sh7372, sh73a0

Drop the "default y" on SH_INTC, make all CPU platforms that use it
select it, and protect all sub-options by "if SH_INTC" to fix this.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2014-08-22 12:28:16 +09:00
Linus Torvalds
d1433d55c7 Add memfd_create syscall to ia64
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Merge tag 'please-pull-memfd_create' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull ia64 update from Tony Luck:
 "Add memfd_create syscall to ia64"

* tag 'please-pull-memfd_create' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  [IA64] Wire up memfd_create() system call
2014-08-21 14:06:56 -07:00
Linus Torvalds
f8d08a1bb4 Microblaze patches for 3.17-rc2
- Wire-up seccomp/getrandom/memfd_create syscalls
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Merge tag 'microblaze-3.17-rc2' of git://git.monstr.eu/linux-2.6-microblaze

Pull microblaze update from Michal Simek:
 "Wire-up seccomp/getrandom/memfd_create syscalls"

* tag 'microblaze-3.17-rc2' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Wire-up memfd_create syscall
  microblaze: Wire-up getrandom syscall
  microblaze: Wire-up seccomp syscall
2014-08-21 14:06:18 -07:00
Michal Simek
83c43c498a microblaze: Wire-up memfd_create syscall
Add new memfd_create syscall.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2014-08-21 10:19:28 +02:00
Michal Simek
53133453a9 microblaze: Wire-up getrandom syscall
Add new getrandom syscall.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2014-08-21 10:07:05 +02:00
Michal Simek
b760949144 microblaze: Wire-up seccomp syscall
Add new seccomp syscall.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2014-08-21 10:07:04 +02:00
Linus Torvalds
e9de42d8ee Reverting a 3.16 patch, fixing two bugs in device assignment
(one has a CVE), and fixing some problems introduced during the merge window
 (the CMA bug came in via Andrew, the x86 ones via yours truly).
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Reverting a 3.16 patch, fixing two bugs in device assignment (one has
  a CVE), and fixing some problems introduced during the merge window
  (the CMA bug came in via Andrew, the x86 ones via yours truly)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  virt/kvm/assigned-dev.c: Set 'dev->irq_source_id' to '-1' after free it
  Revert "KVM: x86: Increase the number of fixed MTRR regs to 10"
  KVM: x86: do not check CS.DPL against RPL during task switch
  KVM: x86: Avoid emulating instructions on #UD mistakenly
  PC, KVM, CMA: Fix regression caused by wrong get_order() use
  kvm: iommu: fix the third parameter of kvm_iommu_put_pages (CVE-2014-3601)
2014-08-20 18:22:10 -05:00
Daniel Drake
95d516b9fc ARM: dts: ODROID i2c improvements
Increase max i2c bus frequency beyond the default for faster
data transfers. According to the manual, these faster speeds are
only available when the board is wired up the right way. In this case,
the vendor kernel has run at this speed for a long time.

sda-delay is needed for talking to RTC on PMIC, otherwise the i2c
controller never sees an ACK. Strangely the other PMIC i2c slave (the
main one) works fine even without this delay. I Chose value 100 to
match the vendor kernel.

Signed-off-by: Daniel Drake <drake@endlessm.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Tested-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2014-08-19 14:12:30 -07:00
Daniel Drake
4cde3733da ARM: dts: Enable PMIC interrupts on ODROID
The ODROID kernel shows that the PMIC interrupt line is hooked up
to pin GPX3-2.

This is needed for the max77686-irq driver to create the PMIC IRQ
domain, which is needed by max77686-rtc.

Signed-off-by: Daniel Drake <drake@endlessm.com>
Tested-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2014-08-19 14:12:26 -07:00
Will Deacon
44b375070f Revert "arm64: Do not invoke audit_syscall_* functions if !CONFIG_AUDIT_SYSCALL"
For some reason, the audit patches didn't make it out of -next this
merge window, so revert our temporary hack and let the audit guys deal
with fixing up -next.

This reverts commit 2a8f45b040.

Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-08-19 22:05:45 +01:00
Ganapatrao Kulkarni
07a15dd55a arm64: mm: update max pa bits to 48
Now that we support 48-bit physical addressing, update MAX_PHYSMEM_BITS
accordingly.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@caviumnetworks.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-08-19 20:23:02 +01:00
Leif Lindholm
86c8b27a01 arm64: ignore DT memreserve entries when booting in UEFI mode
UEFI provides its own method for marking regions to reserve, via the
memory map which is also used to initialise memblock. So when using the
UEFI memory map, ignore any memreserve entries present in the DT.

Reported-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-08-19 20:22:03 +01:00
Mark Brown
49d947face arm64: configs: Enable X-Gene SATA and ethernet in defconfig
Currently when run on an APM platform the ARMv8 defconfig has no viable
options for rootfs other than ramdisk which is rather limiting. Since
we already have both SATA and the bits needed for NFS root enabled we just
need to enable the relevant drivers so do that, helping enable direct
testing of upstream.

If the configuration ends up becoming too big we can consider modularising
some of the drivers and asking people to use an initramfs but for now this
is not an issue.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-08-19 19:26:09 +01:00
Ard Biesheuvel
4190312beb arm64: align randomized TEXT_OFFSET on 4 kB boundary
When booting via UEFI, the kernel Image is loaded at a 4 kB boundary and
the embedded EFI stub is executed in place. The EFI stub relocates the
Image to reside TEXT_OFFSET bytes above a 2 MB boundary, and jumps into
the kernel proper.

In AArch64, PC relative symbol references are emitted using adrp/add or
adrp/ldr pairs, where the offset into a 4 kB page is resolved using a
separate :lo12: relocation. This implicitly assumes that the code will
always be executed at the same relative offset with respect to a 4 kB
boundary, or the references will point to the wrong address.

This means we should link the kernel at a 4 kB aligned base address in
order to remain compatible with the base address the UEFI loader uses
when doing the initial load of Image. So update the code that generates
TEXT_OFFSET to choose a multiple of 4 kB.

At the same time, update the code so it chooses from the interval [0..2MB)
as the author originally intended.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-08-19 19:26:09 +01:00
Aaro Koskinen
608308682a MIPS: OCTEON: make get_system_type() thread-safe
get_system_type() is not thread-safe on OCTEON. It uses static data,
also more dangerous issue is that it's calling cvmx_fuse_read_byte()
every time without any synchronization. Currently it's possible to get
processes stuck looping forever in kernel simply by launching multiple
readers of /proc/cpuinfo:

	(while true; do cat /proc/cpuinfo > /dev/null; done) &
	(while true; do cat /proc/cpuinfo > /dev/null; done) &
	...

Fix by initializing the system type string only once during the early
boot.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nsn.com>
Cc: stable@vger.kernel.org
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/7437/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2014-08-19 18:24:42 +02:00
Markos Chandras
6521d9a436 MIPS: CPS: Initialize EVA before bringing up VPEs from secondary cores
The CPS code is doing several memory loads when configuring the VPEs
from secondary cores, so the segmentation control registers must be
initialized in time otherwise the kernel will crash with strange
TLB exceptions.

Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/7424/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2014-08-19 18:24:41 +02:00
Markos Chandras
ca4d24f795 MIPS: Malta: EVA: Rename 'eva_entry' to 'platform_eva_init'
Rename 'eva_entry' to 'platform_eva_init' as required by the new
'eva_init' macro in the eva.h header. Since this macro is now used
in a platform dependent way, it must not depend on its caller so move
the t1 register initialization inside this macro. Also set the .reorder
assembler option in case the caller may have previously set .noreorder.
This may allow a few assembler optimizations. Finally include missing
headers and document the register usage for this macro.

Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/7423/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2014-08-19 18:24:41 +02:00
Markos Chandras
f85b71ceab MIPS: EVA: Add new EVA header
Generic code may need to perform certain operations when EVA is
enabled, for example, configure the segmentation registers during
boot. In order to avoid using more CONFIG_EVA ifdefs in the arch code,
such functions will be added in this header instead.
Initially this header contains a macro which will be used by generic
code later on during VPEs configuration on secondary cores.
All it does is to call the platform specific EVA init code in case
EVA is enabled.

Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/7422/
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2014-08-19 18:24:40 +02:00
Markos Chandras
5245689900 MIPS: scall64-o32: Fix indirect syscall detection
Commit 4c21b8fd8f (MIPS: seccomp: Handle indirect system calls (o32))
added indirect syscall detection for O32 processes running on MIPS64
but it did not work as expected. The reason is the the scall64-o32
implementation differs compared to scall32-o32. In the former, the v0
(syscall number) register contains the absolute syscall number
(4000 + X) whereas in the latter it contains the relative syscall
number (X). Fix the code to avoid doing an extra addition, and load
the v0 register directly to the first argument for syscall_trace_enter.
Moreover, set the .reorder assembler option in order to have better
control on this part of the assembly code.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/7481/
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2014-08-19 18:24:40 +02:00
Markos Chandras
40381529f8 MIPS: syscall: Fix AUDIT value for O32 processes on MIPS64
On MIPS64, O32 processes set both TIF_32BIT_ADDR and
TIF_32BIT_REGS so the previous condition treated O32 applications
as N32 when evaluating seccomp filters. Fix the condition to check
both TIF_32BIT_{REGS, ADDR} for the N32 AUDIT flag.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Patchwork: http://patchwork.linux-mips.org/patch/7480/
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: James Hogan <james.hogan@imgtec.com>
2014-08-19 18:24:39 +02:00
Huacai Chen
bfcdf13063 MIPS: Loongson: Fix COP2 usage for preemptible kernel
In preemptible kernel, only TIF_USEDFPU flag is reliable to distinguish
whether _init_fpu()/_restore_fp() is needed. Because the value of the
CP0_Status.CU1 isn't changed during preemption.

V2: Fix coding style.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/7515/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-19 18:04:24 +02:00
Guenter Roeck
bbbf6d8768 MIPS: NL: Fix nlm_xlp_defconfig build error
The nlm_xlp_defconfig build fails with

./arch/mips/include/asm/mach-netlogic/topology.h:15:0:
			error: "topology_core_id" redefined [-Werror]
In file included from include/linux/smp.h:59:0,
	[ ...]
                 from arch/mips/mm/dma-default.c:12:
./arch/mips/include/asm/smp.h:41:0:
			note: this is the location of the previous definition

and similar errors.

This is caused by commit bda4584cd9 ("MIPS: Support CPU topology files
in sysfs") which adds the defines to arch/mips/include/asm/smp.h.

Remove the defines from arch/mips/include/asm/mach-netlogic/topology.h
as no longer necessary.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7513/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-19 17:48:44 +02:00
Davidlohr Bueso
f325f1643a frv: Define cpu_relax_lowlatency()
3a6bfbc91d "(arch,locking: Ciao arch_mutex_cpu_relax()") broke
building the frv arch.  Fixes errors such as:

  kernel/locking/mcs_spinlock.h:87:2: error: implicit declaration of function 'cpu_relax_lowlatency'

Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Compile-tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-19 09:40:08 -05:00
Paolo Bonzini
0d234daf7e Revert "KVM: x86: Increase the number of fixed MTRR regs to 10"
This reverts commit 682367c494,
which causes 32-bit SMP Windows 7 guests to panic.

SeaBIOS has a limit on the number of MTRRs that it can handle,
and this patch exceeded the limit.  Better revert it.
Thanks to Nadav Amit for debugging the cause.

Cc: stable@nongnu.org
Reported-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-19 15:12:28 +02:00
Paolo Bonzini
9a4cfb27f7 KVM: x86: do not check CS.DPL against RPL during task switch
This reverts the check added by commit 5045b46803 (KVM: x86: check CS.DPL
against RPL during task switch, 2014-05-15).  Although the CS.DPL=CS.RPL
check is mentioned in table 7-1 of the SDM as causing a #TSS exception,
it is not mentioned in table 6-6 that lists "invalid TSS conditions"
which cause #TSS exceptions. In fact it causes some tests to fail, which
pass on bare-metal.

Keep the rest of the commit, since we will find new uses for it in 3.18.

Reported-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-19 15:12:28 +02:00
Nadav Amit
3a6095a017 KVM: x86: Avoid emulating instructions on #UD mistakenly
Commit d40a6898e5 mistakenly caused instructions which are not marked as
EmulateOnUD to be emulated upon #UD exception. The commit caused the check of
whether the instruction flags include EmulateOnUD to never be evaluated. As a
result instructions whose emulation is broken may be emulated.  This fix moves
the evaluation of EmulateOnUD so it would be evaluated.

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
[Tweak operand order in &&, remove EmulateOnUD where it's now superfluous.
 - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-19 15:12:28 +02:00
Alexey Kardashevskiy
c04fa5831d PC, KVM, CMA: Fix regression caused by wrong get_order() use
fc95ca7284 claims that there is no
functional change but this is not true as it calls get_order() (which
takes bytes) where it should have called order_base_2() and the kernel
stops on VM_BUG_ON().

This replaces get_order() with order_base_2() (round-up version of ilog2).

Suggested-by: Paul Mackerras <paulus@samba.org>
Cc: Alexander Graf <agraf@suse.de>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-19 15:11:57 +02:00
Fugang Duan
3bc4d037c6 ARM: dts: imx6sx: fix the pad setting for uart CTS_B
The current pinfunc define all uart CTS_B IO port for DCE uart 'CTS_B'
IP port. Since uart IP port 'CTS_B' is output, and it don't need to
set 'SELECT_INPUT' bit.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
2014-08-19 20:06:59 +08:00
Lars Persson
2a4a8b1e5d MIPS: Remove race window in page fault handling
Multicore MIPSes without I/D hardware coherency suffered from a race
condition in the page fault handler. The page table entry was
published before any pending lazy D-cache flush was committed, hence
it allowed execution of stale page cache data by other VPEs in the
system.

To make the cache handling safe we need to perform flushing already in
the set_pte_at function. MIPSes without coherent I-caches can get a
small increase in flushes due to the unavailability of the execute
flag in set_pte_at.

[ralf@linux-mips.org: outlining set_pte_at() saves a good k in a test
build, so I moved its definition from pgtable.h to cache.c.]

Signed-off-by: Lars Persson <larper@axis.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7511/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-19 13:31:09 +02:00
Markos Chandras
6461568265 MIPS: Malta: Improve system memory detection for '{e, }memsize' >= 2G
Using kstrtol to parse the "{e,}memsize" variables was wrong because this
parses signed long numbers. In case of '{e,}memsize' >= 2G, the top bit
is set, resulting to -ERANGE errors and possibly random system memory
boundaries. We fix this by replacing "kstrtol" with "kstrtoul".
We also improve the code to check the kstrtoul return value and
print a warning if an error was returned.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: <stable@vger.kernel.org> # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7543/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-19 13:30:47 +02:00
Manuel Lauss
293076f300 MIPS: Alchemy: Fix db1200 PSC clock enablement
Enable PSC0 (I2C/SPI) clock and leave PSC1 (Audio) alone.  This patch
restores functionality to both Audio and I2C/SPI.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/7544/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-19 13:30:47 +02:00
Hauke Mehrtens
2727cab25a MIPS: BCM47XX: Fix reboot problem on BCM4705/BCM4785
This adds some code based on code from the Broadcom GPL tar to fix the
reboot problems on BCM4705/BCM4785. I tried rebooting my device for ~10
times and have never seen a problem. This reverts the changes in the
previous commit and adds the real fix as suggested by Rafał.

Setting bit 22 in Reg 22, sel 4 puts the BIU (Bus Interface Unit) into
async mode.

The previous commit was 316cad5c1d [MIPS:
BCM47XX: make reboot more relaiable]

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: jogo@openwrt.org
Cc: zajec5@gmail.com
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7545/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-19 13:30:47 +02:00
Wei Yongjun
92d01f71c8 MIPS: Remove duplicated include from numa.c
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7537/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-19 13:30:46 +02:00
Sergey Ryazanov
950e97ca50 MIPS: Add common plat_irq_dispatch declaration
Add common declaration to get rid of following sparse warning: "symbol
'plat_irq_dispatch' was not declared. Should it be static?"

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Linux MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/7539/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-19 13:30:45 +02:00
Sergey Ryazanov
b3804d8da1 MIPS: MSP71xx: remove unused plat_irq_dispatch() argument
Remove unused argument to make the plat_irq_dispatch() function
declaration similar to the realization of other platforms.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Linux MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/7538/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-19 13:30:45 +02:00
Ralf Baechle
f28ff3d1ea MIPS: GIC: Remove useless parens from GICBIS().
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-18 22:14:39 +02:00
Yang Wei
ec756d45b7 MIPS: perf: Mark pmu interupt IRQF_NO_THREAD
In RT kernel, I ran into the following calltrace, so PMU interrupts cannot
be threaded

in_atomic(): 1, irqs_disabled(): 1, pid: 0, name: swapper/0
INFO: lockdep is turned off.
Call Trace:
[<ffffffff8088595c>] dump_stack+0x1c/0x50
[<ffffffff801a958c>] __might_sleep+0x13c/0x148
[<ffffffff80891c54>] rt_spin_lock+0x3c/0xb0
[<ffffffff801ad29c>] __wake_up+0x3c/0x80
[<ffffffff80243ba4>] perf_event_wakeup+0x8c/0xf8
[<ffffffff80243c50>] perf_pending_event+0x40/0x78
[<ffffffff8023d88c>] irq_work_run+0x74/0xc0
[<ffffffff80152640>] mipsxx_pmu_handle_shared_irq+0x110/0x228
[<ffffffff8015276c>] mipsxx_pmu_handle_irq+0x14/0x30
[<ffffffff801ffda4>] handle_irq_event_percpu+0xbc/0x470
[<ffffffff80204478>] handle_percpu_irq+0x98/0xc8
[<ffffffff801ff284>] generic_handle_irq+0x4c/0x68
[<ffffffff8089748c>] do_IRQ+0x2c/0x48
[<ffffffff80105864>] plat_irq_dispatch+0x64/0xd0

[ralf@linux-mips.org: I don't see why based on this register dump the
handler should be marked IRQF_NO_THREAD - but the handler is manipulating
per-CPU resources so we don't want it to be rescheduled to another CPU.]

Signed-off-by: Yang Wei <Wei.Yang@windriver.com>
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: mingo@redhat.com
Cc: acme@kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7506/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-08-18 22:14:39 +02:00
Will Deacon
a97a42c476 arm64: compat: wire up memfd_create and getrandom syscalls for aarch32
arch/arm/ just grew support for the new memfd_create and getrandom
syscalls, so add them to our compat layer too.

Signed-off-by: Will Deacon <will.deacon@arm.com>
2014-08-18 19:47:04 +01:00