Now that we have a generic 32bit compatibility implementation
there is no need for mips to implement it's own.
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Now that we have a generic 32bit compatibility implementation
there is no need for ia64 to implement it's own.
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This uses compat_alloc_userspace to remove the various
hacks to allow do_sysctl to write to throuh oldlenp.
The rest of our mature compat syscall helper facitilies
are used as well to ensure we have a nice clean maintainable
compat syscall that can be used on all architectures.
The motiviation for a generic compat sysctl (besides the
obvious hack removal) is to reduce the number of compat
sysctl defintions out there so I can refactor the
binary sysctl implementation.
ppc already used the name compat_sys_sysctl so I remove the
ppcs version here.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
The dwarf unwinder presently attempts to provide a sane PC value if none
is provided, however the logic is broken and cases where a previous valid
dwarf frame exists along with a bogus PC value can still proceed. This
fixes up the test and prevents the unwinder from blowing up.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
kirkwood_timer_init() and kirkwood_pcie_setup() lack of __init which
causes following warnings:
WARNING: vmlinux.o(.text+0x9568): Section mismatch in reference from
the function kirkwood_timer_init() to the function
.init.text:kirkwood_find_tclk()
The function kirkwood_timer_init() references
the function __init kirkwood_find_tclk().
This is often because kirkwood_timer_init lacks a __init
annotation or the annotation of kirkwood_find_tclk is wrong.
WARNING: vmlinux.o(.text+0x979c): Section mismatch in reference from
the function kirkwood_pcie_setup() to the function
.init.text:orion_pcie_setup()
The function kirkwood_pcie_setup() references
the function __init orion_pcie_setup().
This is often because kirkwood_pcie_setup lacks a __init
annotation or the annotation of orion_pcie_setup is wrong.
Signed-off-by: lijie <eltshanli@gmail.com>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
We plan to make the breakpoints parameters generic among architectures.
For that it's better to move the asm-generic header to a generic linux
header.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
* 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: get_tss_base_addr() should return a gpa_t
KVM: x86: Catch potential overrun in MCE setup
The current implementation of get_user_desc() sign extends the return
value because of integer promotion rules. For the most part, this
doesn't matter, because the top bit of base2 is usually 0. If, however,
that bit is 1, then the entire value will be 0xffff... which is
probably not what the caller intended.
This patch casts the entire thing to unsigned before returning, which
generates almost the same assembly as the current code but replaces the
final "cltq" (sign extend) with a "mov %eax %eax" (zero-extend). This
fixes booting certain guests under KVM.
Signed-off-by: Chris Lalancette <clalance@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
xen: mask extended topology info in cpuid
xen/hvc: make sure console output is always emitted, with explicit polling
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: Fix kthread_bind() by moving the body of kthread_bind() to sched.c
sched: Disable SD_PREFER_LOCAL at node level
sched: Fix boot crash by zalloc()ing most of the cpu masks
sched: Strengthen buddies and mitigate buddy induced latencies
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, fs: Fix x86 procfs stack information for threads on 64-bit
x86: Add reboot quirk for 3 series Mac mini
x86: Fix printk message typo in mtrr cleanup code
dma-debug: Fix compile warning with PAE enabled
x86/amd-iommu: Un__init function required on shutdown
x86/amd-iommu: Workaround for erratum 63
This patch fixes USB GPIOs numbers for MPC8569E-MDS boards, plus
according to the latest HW Getting Started Guide (rev 3.3, pilot
boards), USB "POWER" GPIO polarity has changed, it is no longer
inverted.
This patch makes USB Host somewhat work on pilot boards, though
there are still some problems with determining devices speed and
long bulk transfers.
Reported-by: Liu Yu <Yu.Liu@freescale.com>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The PCI-e addressing was originally patterned of the MPC8548CDS
which has PCI1, PCI2, and PCI-e. Since this board only has
PCI1 and PCI-e, it makes more sense to be similar to the MPC8568MDS
board. This does that by cutting the PCI/PCI-e I/O sizes from
16MB to 8MB and pulling the PCI-e I/O range back to 0xe280_0000
(the hole where PCI2 I/O would have been).
This also fixes a typo where an extra zero made an 8MB range a 128MB
range, removes the hole left by PCI2 from the aliases, and sets the
clocks to match the oscillators that are actually on the board.
With accompanying u-boot updates, PCI-e has been validated with
both a sky2 card (1148:9e00) and an e1000 card (8086:108b).
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
The RealView PBX board has two 512MB blocks of memory - one at
0x70000000 (with 256MB mirror at 0) and another at 0x20000000. Only the
block at 0x70000000 (or the mirror at 0) may be used for DMA (e.g.
framebuffer). This patch adds the sparsemem definitions to allow the use
of all the memory split as follows:
256MB @ 0x00000000 (ZONE_DMA)
512MB @ 0x20000000 (ZONE_NORMAL)
256MB @ 0x80000000 (ZONE_NORMAL)
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
The platsmp.c file defines the REALVIEW_SYS_FLAGS* macros which are
already present in platform.h. Just use the latter.
Signed-off-by: Colin Tuckley <colin.tuckley@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This patch adds a realview_fixup() function called during booting to set
up the memory banks. This way there is no need to pass a "mem=" argument
on the kernel command line.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
If Linux is running in non-secure mode, this register may have been
already initialised and writing to the control register not allowed.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This reduces the 'count' size in the common support structure to 32-bits
so that it matches up with what oprofile is expecting. The SH7750 code
was using a nasty oprofilefs hack to expose the 48-bit counter, although
no other implementations were. Now that the offending driver has been
killed off, it's possible to restore some semblance of sanity.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This kills off the old SH7750 oprofile driver, preferring perf instead.
As this driver has a number of bugs that no one seems to have noticed,
it's safe to kill this off now rather than providing an extended
transition period.
The old oprofile framework is still kept in place for now, primarily to
give out-of-tree drivers a chance to transition off. But this too will be
killed off in short order.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This implements preliminary support for perf callchains (at the moment
only the kernel side is implemented). The actual implementation itself is
just a simple wrapper around the unwinder API, which allows for callchain
generation with or without the dwarf unwinder.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Allow the architecture to request a normal jiffy tick when the system
goes idle and tick_nohz_stop_sched_tick is called . On s390 the hook is
used to prevent the system going fully idle if there has been an
interrupt other than a clock comparator interrupt since the last wakeup.
On s390 the HiperSockets response time for 1 connection ping-pong goes
down from 42 to 34 microseconds. The CPU cost decreases by 27%.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
LKML-Reference: <20090929122533.402715150@de.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Patch f598282f51 exposed a problem in
powerpc MSI-X functionality, making network interfaces such as ixgbe
and cxgb3 stop to work when MSI-X is enabled. RX interrupts were not
being generated.
The problem was caused because MSI irq was not being effectively
unmasked after device initialization.
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Doing so causes xtime to be negative which crashes the timekeeping
code in funny ways when doing suspend/resume
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Following S390's good example we should use hrtimers for the decrementer too!
This patch converts the timer from the old mechanism to hrtimers.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
It looks like the variable "pc" is defined. At least the current code always
failed on me stating that "pc" is already defined somewhere else.
Let's use _pc instead, because that doesn't collide.
Is this the right approach? Does it break on 440 too? If not, why not?
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Now we have everything in place to be able to build KVM, so let's add it
as config option and in the Makefile.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
In order to access fields in the PACA from assembly code, we need
to generate offsets using asm-offsets.c.
So let's add the new PACA related bits, we just introduced!
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
For KVM we need to store some information in the PACA, so we
need to extend it.
This patch adds KVM SLB shadow related entries to the PACA and
a field that indicates if we're inside a guest.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To be able to keep KVM as module, we need to export the SLB trampoline
addresses to the module, so it knows where to jump to.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
For KVM we need to allocate a new context id, but don't really care about
all the mm context around it.
So let's split the alloc and destroy functions for the context id, so we can
grab one without allocating an mm context.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
We want to be able to build KVM as a module. To enable us doing so, we
need some more exports from core Linux parts.
This patch exports all functions and variables that are required for KVM.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
We need to access some VCPU fields from assembly code. In order to get
the proper offsets, we have to define them in asm-offsets.c.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
We need to run some KVM trampoline code in real mode. Unfortunately, real mode
only covers 8MB on Cell so we need to squeeze ourselves as low as possible.
Also, we need to trap interrupts to get us back from guest state to host state
without telling Linux about it.
This patch adds interrupt traps and includes the KVM code that requires real
mode in the real mode parts of Linux.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
