Benefit from pci store block instruction by writing up to 128 bytes
with a single instruction to MMIO space. Depending on the workload
this can result in a huge performance increase due to the reduced
number of instructions. The ordering guarantees of single stores
vs. one store block are identical.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* for_3.8-rc1: (243 commits)
[media] omap3isp: Replace cpu_is_omap3630() with ISP revision check
[media] omap3isp: Prepare/unprepare clocks before/after enable/disable
[media] omap3isp: preview: Add support for 8-bit formats at the sink pad
[media] omap3isp: Replace printk with dev_*
[media] omap3isp: Find source pad from external entity
[media] omap3isp: Configure CSI-2 phy based on platform data
[media] omap3isp: Add PHY routing configuration
[media] omap3isp: Add CSI configuration registers from control block to ISP resources
[media] omap3isp: Remove unneeded module memory address definitions
[media] omap3isp: Use monotonic timestamps for statistics buffers
[media] uvcvideo: Fix control value clamping for unsigned integer controls
[media] uvcvideo: Mark first output terminal as default video node
[media] uvcvideo: Add VIDIOC_[GS]_PRIORITY support
[media] uvcvideo: Return -ENOTTY for unsupported ioctls
[media] uvcvideo: Set device_caps in VIDIOC_QUERYCAP
[media] uvcvideo: Don't fail when an unsupported format is requested
[media] uvcvideo: Return -EACCES when trying to access a read/write-only control
[media] uvcvideo: Set error_idx properly for extended controls API failures
[media] rtl28xxu: add NOXON DAB/DAB+ USB dongle rev 2
[media] fc2580: write some registers conditionally
...
The arch/arm64/Makefile was not passing the right target to the
boot/dts/Makefile.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
The REALVIEW EB board can host tiles with multiple cores thus needs
to be able to initialise SMP. There is, however, no .smp entry in
the MACHINE_START struct for REALVIEW_EB.
This patch adds the appropriate .smp entry to this struct.
Signed-off-by: Steve Capper <steve.capper@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The kernel can only be entered on HYP mode on CPUs which actually
support it, i.e. >= ARMv7. pre-v6 platform support cannot coexist
in the same kernel as support for v7 and higher, so there is no
advantage in having the HYP mode check on pre-v6 hardware.
At least one pre-v6 board is known to fail when the HYP mode check
code is present, although the exact cause remains unknown and may
be unrelated. [1]
This patch restores the old behaviour for pre-v6 platforms, whereby
the CPSR is forced directly to SVC mode with IRQs and FIQs masked.
All kernels capable of booting on v7 hardware will retain the
check, so this should not impair functionality.
[1] http://lists.arm.linux.org.uk/lurker/message/20121130.013814.19218413.en.html
([ARM] head.S change broke platform device registration?)
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The offset must be multiplied by 4 to be sure to access the correct
32bit word in the stack scratch space.
For instance, a store at scratch memory cell #1 was generating the
following:
st r4, [sp, #1]
While the correct code for this is:
st r4, [sp, #4]
To reproduce the bug (assuming your system has a NIC with the mac
address 52:54:00:12:34:56):
echo 0 > /proc/sys/net/core/bpf_jit_enable
tcpdump -ni eth0 "ether[1] + ether[2] - ether[3] * ether[4] - ether[5] \
== -0x3AA" # this will capture packets as expected
echo 1 > /proc/sys/net/core/bpf_jit_enable
tcpdump -ni eth0 "ether[1] + ether[2] - ether[3] * ether[4] - ether[5] \
== -0x3AA" # this will not.
This bug was present since the original inclusion of bpf_jit for ARM
(ddecdfce: ARM: 7259/3: net: JIT compiler for packet filters).
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
syscall_trace_exit is currently doing things back-to-front; invoking
the audit hook *after* signalling the debugger, which presents an
opportunity for the registers to be re-written by userspace in order to
bypass auditing constaints.
This patch fixes the ordering by moving the audit code first and the
tracehook code last. On the face of it, it looks like
current_thread_info()->syscall may be incorrect for the sys_exit
tracepoint, but that's actually not an issue because it will have been
set during syscall entry and cannot have changed since then.
Reported-by: Andrew Gabbasov <Andrew_Gabbasov@mentor.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Official prototype for kzalloc is:
void *kzalloc(size_t, gfp_t);
The ARM bpf_jit code was having the assumption that it was:
void *kzalloc(gfp_t, size);
This was resulting the use of some random GFP flags depending on the
size requested and some random overflows once the really needed size
was more than the value of GFP_KERNEL.
This bug was present since the original inclusion of bpf_jit for ARM
(ddecdfce: ARM: 7259/3: net: JIT compiler for packet filters).
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The original version code causes following sparse warnings:
arch/x86/lib/inat-tables.c:1080:25: warning: duplicate const
arch/x86/lib/inat-tables.c:1095:25: warning: duplicate const
arch/x86/lib/inat-tables.c:1118:25: warning: duplicate const
for the variables inat_escape_tables, inat_group_tables, and inat_avx_tables
in the code generated by gen-insn-attr-x86.awk.
The author Masami Hiramutsu says here is to make both the value pointed by the
pointers and the pointers itself read-only, so we move the "const" to be after
the "*".
Signed-off-by: Cong Ding <dinggnu@gmail.com>
Link: http://lkml.kernel.org/r/20121209082103.GA9181@gmail.com
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Use phys_addr_t rather than "void *" for physical memory address.
This removes casts and fixes a "cast from pointer to integer of different
size" warning on ppc44x_defconfig.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Alex writes:
Pretty minor -next pull request. We some additional new bits waiting
internally for release. Hopefully Monday we can get at least some of
them out. The others will probably take a few more weeks.
Highlights of the current request:
- ELD registers for passing audio information to the sound hardware
- Handle GPUVM page faults more gracefully
- Misc fixes
Merge radeon test
* 'drm-next-3.8' of git://people.freedesktop.org/~agd5f/linux: (483 commits)
drm/radeon: bump driver version for new info ioctl requests
drm/radeon: fix eDP clk and lane setup for scaled modes
drm/radeon: add new INFO ioctl requests
drm/radeon/dce32+: use fractional fb dividers for high clocks
drm/radeon: use cached memory when evicting for vram on non agp
drm/radeon: add a CS flag END_OF_FRAME
drm/radeon: stop page faults from hanging the system (v2)
drm/radeon/dce4/5: add registers for ELD handling
drm/radeon/dce3.2: add registers for ELD handling
radeon: fix pll/ctrc mapping on dce2 and dce3 hardware
Linux 3.7-rc7
powerpc/eeh: Do not invalidate PE properly
Revert "drm/i915: enable rc6 on ilk again"
ALSA: hda - Fix build without CONFIG_PM
of/address: sparc: Declare of_iomap as an extern function for sparc again
PM / QoS: fix wrong error-checking condition
bnx2x: remove redundant warning log
vxlan: fix command usage in its doc
8139cp: revert "set ring address before enabling receiver"
MPI: Fix compilation on MIPS with GCC 4.4 and newer
...
Conflicts:
drivers/gpu/drm/exynos/exynos_drm_encoder.c
drivers/gpu/drm/exynos/exynos_drm_fbdev.c
drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
Commit b9a50f7490 ("ARM: 7450/1: dcache: select DCACHE_WORD_ACCESS for
little-endian ARMv6+ CPUs") added support for word-at-time path
comparisons, relying on the ability to perform unaligned loads with
negligible performance impact in hardware.
For nommu configurations without MPU support, this is unpredictable and
so we should fall back to the byte-by-byte routines.
Acked-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Recent ARMv7 toolchains assume that unaligned memory accesses will not
fault and will instead be handled by the processor.
For the nommu case (without an MPU), memory will be treated as
strongly-ordered and therefore unaligned accesses may fault regardless
of the SCTLR.A setting.
This patch passes -mno-unaligned-access to GCC when compiling for nommu
targets, preventing the generation of unaligned memory access in the
kernel.
Acked-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch keeps disabled the strict alignment CP15 bit for
all armv6 and armv7 processor without the mmu. This behaviour
is now same as in the mmu case.
Signed-off-by: Armando Visconti <armando.visconti@st.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This is what is done for the regular interrupts in kernel/irqs/proc.c
already, before calling arch_show_interrupts(). Not doing so for the
IPIs causes the column headers not to match with the content whenever
some CPUs are offline.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Previously, the ASoC 'platform' (PCM/DMA) object was instantiated via a
platform_device. This didn't represent the hardware well, since there
was no separate hardware associated with this platform_device; it was a
virtual device with sole purpose to call snd_soc_register_platform().
This change removes the platform_device completely. Each Samsung DAI now
registers the ASoC 'platform' itself. Machine drivers are adjusted for
the new 'platform' name.
Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
6e20a0a429
(gpio: pcf857x: enable gpio_to_irq() support)
added gpio_to_irq() support on pcf857x driver,
but it used pdata->irq.
This patch modifies driver to use client->irq instead of it.
It modifies kzm9g board platform settings,
and device probe information too.
This patch is tested on kzm9g board
Reported-by: Christian Engelmayer <christian.engelmayer@frequentis.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This patch adds the MPC5200B based a3m071 board.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
* pci/mjg-pci-roms-from-efi:
x86: Use PCI setup data
PCI: Add support for non-BAR ROMs
PCI: Add pcibios_add_device
EFI: Stash ROMs if they're not in the PCI BAR
HSMMC IP on AM33xx need a special setting to handle High-speed cards.
Other platforms like TI81xx, OMAP4 may need this as-well. This depends
on the HSMMC IP timing closure done for the high speed cards.
From AM335x TRM (SPRUH73F - 18.3.12 Output Signals Generation):
The MMC/SD/SDIO output signals can be driven on either falling edge or
rising edge depending on the SD_HCTL[2] HSPE bit. This feature allows
to reach better timing performance, and thus to increase data transfer
frequency.
There are few pre-requisites for enabling the HSPE bit
- Controller should support High-Speed-Enable Bit and
- Controller should not be using DDR Mode and
- Controller should advertise that it supports High Speed in
capabilities register and
- MMC/SD clock coming out of controller > 25MHz
Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
The at91-mci driver is not needed anymore since the atmel-mci driver now
supports all Atmel devices.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Pull MIPS fixes from Ralf Baechle:
"These are the fixes for the N32 syscall bugs found by Al, an
extraneous break that broke detection for R3000 and R3081 processors,
an endless loop processing signals for kernel task (x86 received the
same fix a while ago) and a fix for transparent huge page which took
ages to track down because it was so hard to come up with a workable
test case."
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Fix endless loop when processing signals for kernel tasks
MIPS: R3000/R3081: Fix CPU detection.
MIPS: N32: Fix signalfd4 syscall entry point
MIPS: N32: Fix preadv(2) and pwritev(2) entry points.
MIPS: Avoid mcheck by flushing page range in huge_ptep_set_access_flags()
The vmclear function will be assigned to the callback function pointer
when loading kvm-intel module. And the bitmap indicates whether we
should do VMCLEAR operation in kdump. The bits in the bitmap are
set/unset according to different conditions.
Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
This patch provides a way to VMCLEAR VMCSs related to guests
on all cpus before executing the VMXOFF when doing kdump. This
is used to ensure the VMCSs in the vmcore updated and
non-corrupted.
Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
I've legally changed my name with New York State, the US Social Security
Administration, et al. This patch propagates the name change and change
in initials and login to comments in the kernel source as well.
Signed-off-by: Nadia Yvette Chambers <nyc@holomorphy.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
CAST5 and CAST6 both use same lookup tables, which can be moved shared module
'cast_common'.
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
There are two cases we need to adjust page size in set_spte:
1): the one is other vcpu creates new sp in the window between mapping_level()
and acquiring mmu-lock.
2): the another case is the new sp is created by itself (page-fault path) when
guest uses the target gfn as its page table.
In current code, set_spte drop the spte and emulate the access for these case,
it works not good:
- for the case 1, it may destroy the mapping established by other vcpu, and
do expensive instruction emulation.
- for the case 2, it may emulate the access even if the guest is accessing
the page which not used as page table. There is a example, 0~2M is used as
huge page in guest, in this huge page, only page 3 used as page table, then
guest read/writes on other pages can cause instruction emulation.
Both of these cases can be fixed by allowing guest to retry the access, it
will refault, then we can establish the mapping by using small page
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Acked-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Implement ONE_REG interface for EPCR register adding KVM_REG_PPC_EPCR to
the list of ONE_REG PPC supported registers.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
[agraf: remove HV dependency, use get/put_user]
Signed-off-by: Alexander Graf <agraf@suse.de>
Add EPCR support in booke mtspr/mfspr emulation. EPCR register is defined only
for 64-bit and HV categories, we will expose it at this point only to 64-bit
virtual processors running on 64-bit HV hosts.
Define a reusable setter function for vcpu's EPCR.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
[agraf: move HV dependency in the code]
Signed-off-by: Alexander Graf <agraf@suse.de>
When delivering guest IRQs, update MSR computation mode according to guest
interrupt computation mode found in EPCR.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
[agraf: remove HV dependency in the code]
Signed-off-by: Alexander Graf <agraf@suse.de>
In BookE, EPCR is defined and valid when either the HV or the 64bit
category are implemented. Reflect this in the field definition.
Today the only KVM target on 64bit is HV enabled, so there is no
change in actual source code, but this keeps the code closer to the
spec and doesn't build up artificial road blocks for a PR KVM
on 64bit.
Signed-off-by: Alexander Graf <agraf@suse.de>
Extend MAS2 EPN mask to retain most significant bits on 64-bit hosts.
Use this mask in tlb effective address accessor.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Mask high 32 bits of MAS2's effective page number in tlbwe emulation for guests
running in 32-bit mode.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Mask high 32 bits of effective address in emulation layer for guests running
in 32-bit mode.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
[agraf: fix indent]
Signed-off-by: Alexander Graf <agraf@suse.de>
