| Commit message (Collapse) | Author | Age |
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When svm_vcpu_load is called while the vcpu is running in
guest mode the tsc adjustment made there is lost on the next
emulated #vmexit. This causes the tsc running backwards in
the guest. This patch fixes the issue by also adjusting the
tsc_offset in the emulated hsave area so that it will not
get lost.
Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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* 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Clear sticky FSR register after saving it to func parametr
microblaze: UMS is used only for MMU kernel
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Previous patch d63678d607d0e37ec7abe5ceb545d7e8aab956a4 clear
it for noMMU kernel. This one do it for MMU.
Correct noMMU version
Signed-off-by: Michal Simek <monstr@monstr.eu>
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Signed-off-by: Michal Simek <monstr@monstr.eu>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc: using HZ needs an include of linux/param.h
sparc32: convert to asm-generic/hardirq.h
sparc64: Cache per-cpu %pcr register value in perf code.
sparc64: Fix comment typo in perf_event.c
sparc64: Minor coding style fixups in perf code.
sparc64: Add a basic conflict engine in preparation for multi-counter support.
sparc64: Increase vmalloc size to fix percpu regressions.
sparc64: Add initial perf event conflict resolution and checks.
sparc: Niagara1 perf event support.
sparc: Add Niagara2 HW cache event support.
sparc: Support all ultra3 and ultra4 derivatives.
sparc: Support HW cache events.
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Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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From: Christoph Hellwig <hch@lst.de>
[akpm@linux-foundation.org: /arch/sparc/include/asm/irq_32.h: move NR_IRQS definition]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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These got introduced during the counter --> event tree-wide
renaming.
Signed-off-by: David S. Miller <davem@davemloft.net>
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The hardware counter ->event_base state records and encoding of
the "struct perf_event_map" entry used for the event.
We use this to make sure that when we have more than 1 event,
both can be scheduled into the hardware at the same time.
As usual, structure of code is largely cribbed from powerpc.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since we now use the embedding percpu allocator we have to make the
vmalloc area at least as large as the stretch can be between nodes.
Besides some minor asm adjustments, this turned out to be pretty
trivial.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Cribbed from powerpc code, as usual. :-)
Currently it is only used to validate that all counters
have the same user/kernel/hv attributes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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This chip is extremely limited, and many of the events supported
are approximations at best.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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For the generic events we support, all of these chips have
the same encodings as ultra3i.
Signed-off-by: David S. Miller <davem@davemloft.net>
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First supported chip for HW cache events is Ultra-IIIi.
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Don't leak 64-bit kernel register values to 32-bit processes
x86, SLUB: Remove unused CONFIG FAST_CMPXCHG_LOCAL
x86: earlyprintk: Fix regression to handle serial,ttySn as 1 arg
x86: Don't generate cmpxchg8b_emu if CONFIG_X86_CMPXCHG64=y
x86: Fix csum_ipv6_magic asm memory clobber
x86: Optimize cmpxchg64() at build-time some more
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While 32-bit processes can't directly access R8...R15, they can
gain access to these registers by temporarily switching themselves
into 64-bit mode.
Therefore, registers not preserved anyway by called C functions
(i.e. R8...R11) must be cleared prior to returning to user mode.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: <stable@kernel.org>
LKML-Reference: <4AC34D73020000780001744A@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Remove unused CONFIG FAST_CMPXCHG_LOCAL from Kconfig.
Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Robert P. J. Day" <rpjday@crashcourse.ca>
Cc: linux-mm@kvack.org
LKML-Reference: <1253981501.4568.61.camel@ht.satnam>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Commit c953094 ("early_printk: Allow more than one early console")
introduced a regression in the parsing of the earlyprintk= kernel
arguments.
If you specify "earlyprintk=serial,ttyS0,115200" as a kernel
argument, the "serial,ttyS" should be parsed as a single argument
and not as "serial" and then "ttyS".
Also update the documentation to reflect you can specify the ttyS
directly without the "serial" argument.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <gregkh@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
LKML-Reference: <4ABB7D5E.6000301@windriver.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Conditionaly compile cmpxchg8b_emu.o and EXPORT_SYMBOL(cmpxchg8b_emu).
This reduces the kernel size a bit.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: John Stultz <johnstul@us.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <4AC43E7E.1000600@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Just like ip_fast_csum, the assembly snippet in csum_ipv6_magic needs a
memory clobber, as it is only passed the address of the buffer, not a
memory reference to the buffer itself.
This caused failures in Hurd's pfinetv4 when we tried to compile it with
gcc-4.3 (bogus checksums).
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Try to avoid the 'alternates()' code when we can statically
determine that cmpxchg8b is fine. We already have that
CONFIG_x86_CMPXCHG64 (enabled by PAE support), and we could easily
also enable it for some of the CPU cases.
Note, this patch only adds CMPXCHG8B for the obvious Intel CPU's,
not for others. (There was something really messy about cmpxchg8b
and clone CPU's, so if you enable it on other CPUs later, do it
carefully.)
If we avoid that asm-alternative thing when we can assume the
instruction exists, we'll generate less support crud, and we'll
avoid the whole issue with that extra 'nop' for padding instruction
sizes etc.
LKML-Reference: <alpine.LFD.2.01.0909301743150.6996@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68knommu: fix rename of pt_regs offset defines breakage
m68knommu: remove duplicated #include
m68knommu: show KiB rather than pages in "Freeing initrd memory:" message
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Commit f159ee782990aacb5494738c98f13a2aa61dbb4a ("locking,
m68k/asm-offsets: Rename pt_regs offset defines") breaks the
m68knommu entry code that relies on these define names.
Fix the files to match the new define names.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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Fix "Freeing initrd memory:" message m68knommu to show kilobytes as
claimed rather than number of pages.
Signed-off-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
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Seemingly this support was missed when highmem was added, so
DEBUG_HIGHMEM wouldn't have checked the kmap_atomic type.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Bit testing (test, testset, testclear, testchange) for bit numbers
known at compile time returns a word with the tested-for bit set.
Change it to return a true boolean value so to make it consistent with
the out-of-line path and all the other bitops implementations.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Make die() better match x86:
- add printing of the last accessed sysfs file
- ensure console_verbose() is called under the lock
- ensure we panic outside of oops_exit()
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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dump_mem and dump_backtrace were both using multiple printk statements
to print each line. With DEBUG_LL enabled, this causes OOPS to become
very difficult to read. Solve this by only using one printk per line.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The clock generation system in the ep93xx uses two external oscillator's
and two internal PLLs to derive all the internal clocks. Many of these
internal clocks can be stopped to save power.
This introduces a "parent" hierarchy for the clocks so that the users
count can be correctly tracked for power management.
The "parent" for the video clock can either be one of the PLL outputs
or the external oscillator. In order to correctly track the "parent"
for the video clock calc_clk_div() needed to be modified. It now
returns an error code if the desired rate cannot be generated.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Update the ep93xx i2c support:
1) The platform init code passes the configuration data for the
i2c-gpio driver. This allows any gpio pin do be used for the
sda and scl pins. It also allows the platform to specify the
udelay and timeout.
2) Program the gpio configuration register to enable/disable the
open drain drivers. Note that this really only works if the
sda and scl pins are set to EP93XX_GPIO_LINE_EEDAT and
EP93XX_GPIO_LINE_EECLK.
3) Update the edb93xx.c platform init to use the new support.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Most of the EP93XX_GPIO_*_INT_* register defines in ep93xx-regs.h
not required due to how the ep93xx core and gpiolib support handle
gpio interrupts. Remove the defines to prevent future confusion.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Change the #define's for the EP93XX_*_PHYS_BASE addresses to use
macros for easier readability.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Add Contec Micro9-Slim support
Cc: Ryan Mallon <ryan@bluewatersys.com>
Requires: 5750/1
Signed-off-by: Hubert Feurstein <hubert.feurstein@contec.at>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Update Contec Micro9 platform code
Cc: Ryan Mallon <ryan@bluewatersys.com>
Requires: 5749/1
Signed-off-by: Hubert Feurstein <hubert.feurstein@contec.at>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Update Contec Micro9 maintainer and add entry in MAINTAINERS
Cc: Ryan Mallon <ryan@bluewatersys.com>
Requires: 5744/1
Signed-off-by: Hubert Feurstein <hubert.feurstein@contec.at>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Manfred Gruber <m.gruber@tirol.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Both iPaqs h3100 and h3600 currently share the same source
file - h3600.c But Makefile builds it only if CONFIG_SA1100_H3600
selected, so selecting just CONFIG_SA1100_H3100 results in
"no machine record defined" message and aborted compilation.
Fix it.
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Acked-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Fix the warning messages during kernel build for bcmring.
Signed-off-by: Leo Hao Chen <leochen@broadcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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If sparsemem is enabled, the start_pfn passed to the free_memmap()
function corresponds to an area of memory not known to the kernel and
pfn_to_page returns a wrong value. The (start_pfn - 1), however, is
known to the kernel.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This is needed because applications using the sys_cacheflush system call
can pass a memory range which isn't mapped yet even though the
corresponding vma is valid. The patch also adds unwinding annotations
for correct backtraces from the coherent_user_range() functions.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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From: Ryan Mallon <ryan@bluewatersys.com>
Change the gpio_to_irq and irq_to_gpio static inline functions to
macros so that they can be used in variable initialisers.
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This adds the missing Kconfig options for the first SDRAM bank address
on ep93xx boards.
Cc: Hubert Feurstein <(address hidden)>
Signed-off-by: H Hartley Sweeten <(address hidden)>
Acked-by: Ryan Mallon <(address hidden)>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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According to the following in arch/arm/mm/fault.c page faults from
kernel mode are invalid if mmap_sem is already held and there is
no exception handler defined for the faulting instruction:
/*
* As per x86, we may deadlock here. However, since the kernel only
* validly references user space from well defined areas of the code,
* we can bug out early if this is from code which shouldn't.
*/
if (!down_read_trylock(&mm->mmap_sem)) {
if (!user_mode(regs) && !search_exception_tables(regs->ARM_pc))
goto no_context;
Since mmap_sem can be held at arbitrary times by another thread this
also means that any page faults from kernel mode are invalid if no
exception handler is defined for them, regardless whether mmap_sem is
held at the time of fault.
To easier detect code that can trigger the above error, add a check
also for the case where mmap_sem is acquired. As this has an overhead
make it a VM debug check.
Signed-off-by: Imre Deak <imre.deak@nokia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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* 'for-linus' of git://www.linux-m32r.org/git/takata/linux-2.6_dev:
m32r: Fix IPI function calls for SMP
m32r: Fix set_memory() for DISCONTIGMEM
m32r: add rtc_lock variable
m32r: define ioread* and iowrite* macros
m32r: export delay loop symbols
m32r: fix tme_handler
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This patch fixes the m32r SMP kernel after 2.6.27.
A part of the following patch breaks m32r SMP operation.
> m32r: convert to generic helpers for IPI function calls
> commit 7b7426c8a615cf61df9a77b9df7d5b75d91e3fa0
In the above patch, a CALL_FUNC_SINGLE_IPI was newly introduced,
but the its IPI vector number was wrong in the patch code.
The m32r SMP kernel hanged-up during boot operation, because
the CPU_BOOT_IPI was called instead of CALL_FUNC_SINGLE_IPI
(CPU_BOOT_IPI had no side effect at that time because the 2nd
core had already been started up),
as a result, csd_unlock() was not called, then a dead lock
occurred in csd_lock_wait() after the detection of Compact Flash
memory as IDE generic disk.
Signed-off-by: Toshihiro HANAWA <hanawa@ccs.tsukuba.ac.jp>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
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In case CONFIG_DISCONTIGMEM is set, the memory size of system was
always determined by CONFIG_MEMORY_SIZE and was not changeable.
This patch fixes set_memory() of arch/m32r/mm/discontig.c so that
we can specify memory size by the "mem=<size>" kernel parameter.
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
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