* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (27 commits)
MIPS: Loongson 2F: Fix of problems introduced by -mfix-loongson2f-jump
MIPS: Loongson-2F: Use CONFIG_CPU_JUMP_WORKAROUNDS to control workarounds.
MIPS: Loongson 2F: Enable fixups of the latest binutils
MIPS: Loongson: Add CPU_LOONGSON2F_WORKAROUNDS
MIPS: Kconfig: Make Broadcom SoC support naming consistent
MIPS: BCM63xx: Update defconfig
MIPS: oprofile: Fix breakage when CONFIG_OPROFILE=m
STAGING: octeon-ethernet: Use proper phy addresses for Movidis hardware.
NET: mdio-octeon: Enable the hardware before using it.
I2C: Fix section mismatch errors in i2c-octeon.c
MIPS: Loongson: Fix LOONGSON_ADDRWIN_CFG macro.
MIPS: Loongson: Fix phys_mem_access_prot() check
MIPS: Loongson: Fix find_vga_mem_init()
MIPS: Loongson: Fix typo in gdium mach type string.
MIPS: Use CKSEG1ADDR for uncached handler
MIPS: Check for accesses beyond the end of the PGD.
MIPS: Use uasm_i_ds{r,l}l_safe() instead of uasm_i_ds{r,l}l() in tlbex.c
MIPS: Add uasm_i_dsrl_safe() and uasm_i_dsll_safe() to uasm.
MIPS: die() does not call die notifier chain
MIPS: Swarm, Littlesur: Enable PATA platform driver.
...
The -mfix-loongson2f-jump option provided by latest CVS binutils have fixed
the out-of-order issue of Loongson-2F described in chapter 15 of the
Loongson2F User Manual [1, 2], but introduced some problems.
The option changes all of the jump target to "addr & 0xcfffffff" through the
at($1) register, but for the reboot address of Loongson 2F 0xbfc00000 this is
wrong. Avoids the problem via telling the assembler to not use the $at
register.
[1] Loongson2F User Manual (Chinese Version)
http://www.loongson.cn/uploadfile/file/200808211
[2] English Version of Chapter 15:
http://groups.google.com.hk/group/loongson-dev/msg/e0d2e220958f10a6?dmode=source
Reported-and-tested-by: Liu Shiwei <liushiwei@gmail.com>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1109/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
With the "Fixups of Loongson2F" patch [1] having been applied to binutils
for binutils 2.20.1 we now can use it's time to enable the options provided
by the patch to compile the kernel.
Without these fixups, the system may hang if the erratum is triggered.
For more information on these fixups please refer to the following
references.
[1] "Fixups of Loongson2F" patch for binutils(actually for gas)
http://sourceware.org/ml/binutils/2009-11/msg00387.html
[2] Chapter 15 of "Loongson2F User Manual"(Chinese Version)
http://www.loongson.cn/uploadfile/file/200808211
[3] Chapter 15 of the English version Loongson 2F User Manual
http://groups.google.com.hk/group/loongson-dev/msg/e0d2e220958f10a6?dmode=source
Signed-off-by: Zhang Le <r0bertz@gentoo.org>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Zhang Le <r0bertz@gentoo.org>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1106/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
As documented in the Loongson 2F User Manual [2, 3], the old Loongson2F
series (2F01 / 2F02) have the NOP & JUMP issues which requires workarounds
in the kernel and binutils. This issue has been rectified in Loongson 2F
series 2F03 so no workarounds needed.
Now that the workarounds [1] adding the the -mfix-loongson2f-nop and
-mfix-loongson2f-jump options have been comitted to the binutils the CVS
repository), we can add the workarounds in the kernel.
The workarounds have no significant side effect on the system but may
decrease performance so we control them through a a new
CPU_LOONGSON2F_WORKAROUNDS config option allowing the users to only enable
it as necessary.
[1] "Fixups of Loongson2F" patch for binutils(actually for gas)
http://sourceware.org/ml/binutils/2009-11/msg00387.html
[2] Chapter 15 of "Loongson2F User Manual"(Chinese Version)
http://www.loongson.cn/uploadfile/file/200808211
[3] English Version of the above chapter 15
http://groups.google.com.hk/group/loongson-dev/msg/e0d2e220958f10a6?dmode=source
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1105/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
the defconfig was out-of-sync since 2.6.30-rc6, update it with the new
symbols and enable BCM6338, 6345, wireless, b43 driver and LEDs support.
Signed-off-by: Fainelli <ffainelli@freebox.fr>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1081/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
When the oprofile is compiled as a module do_IRQ() is not called in
arch/mips/loongson/lemote-2f/irq.c due to a wrong #ifdef there.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1143/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
There's a typo in the LOONGSON_ADDRWIN_CFG macro. The cpu window mmap
register address should contain the destination parameters not the
source one. This has not been noticed because the code is only using
source = destination.
Signed-off-by: Arnaud Patard <apatard@mandriva.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1162/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The check used to determine if uncached accelerated should be used or not
is wrong. The parenthesis are misplaced and making the test fail.
Signed-off-by: Arnaud Patard <apatard@mandriva.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1161/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
"MIPS: Calculate proper ebase value for 64-bit kernels"
9af43ea080dd5d6c7b34f38261780e5dd43537bc (lmo) rsp.
f6be75d03c (kernel.org) broke some 64-bit
MIPS systems.
Before this we were using XKPHYS/cached as ebase and computed the uncached
xphsys/unchached address for that area. After that commit ebase became a
32-bit compat address and convert does not work anymore. We now should use
CKSEG1 for this. CKSEG1ADDR does just that in 32-bit and 64-bit.
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
To: Ralf Baechle <ralf@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1149/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
For some combinations of PAGE_SIZE and vmbits, it is possible to have
userspace access that are beyond what is covered by the PGD, but within
vmbits. Such an access would cause the TLB refill handler to load garbage
values for PMD and PTE potentially giving userspace access to parts of the
physical address space to which it is not entitled.
In the TLB refill hot path, we add a single dsrl instruction so we can
check if any bits outside of the range covered by the PGD are set. In
the vmalloc side we then separate the bad case from the normal vmalloc
case and call tlb_do_page_fault_0 if warranted. This slows us down a
bit, but has the benefit of yielding deterministic behavior.
[Ralf: Fixed build error for 32-bit kernels.]
[Ralf: Folded lmo commit c8c0e22b2aa3982852b44279638ef37f9aa31b7d into this
commit.]
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1152/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
This makes the code somewhat cleaner while reducing the risk of shift
amount overflows when various page table related options are changed.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1154/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This allows us to clean up the code by not having to explicitly code
checks for shift amounts greater than 32.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1153/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The MIPS implementation of die() forgets to call notify_die() and thus notifiers
registered via register_die_notifier() are not called. This results in kgdb not
being activated on exceptions.
The only subtlety is that notify_die declares its regs argument w/o const, so
the const had to be removed from mips die() as well.
[Ralf: Fixed build error for SGI IP22 and IP28 platforms.]
Signed-off-by: Yury Polyanskiy <ypolyans@princeton.edu>
Cc: linux-mips@linux-mips.org
Patchworks: http://patchwork.linux-mips.org/patch/1142/
Acked-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
According to include/asm/sibyte/swarm.h both systems provide a
platform device for the ide controler. Until now the IDE subsystem was
used which is deprecated by now. The same structure can be used with the
PATA driver.
Signed-off-by: Sebastian Andrzej Siewior <sebatian@breakpoint.cc>
Cc: tbm@cyrius.com
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1127/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Same issues as SD card detection: One of both is always triggering and the
handlers take care to shut it up and enable the other. To avoid messages
about "unbalanced interrupt enable/disable" they must not be automatically
enabled when initally requested.
This was not an issue with the db1200_defconfig due to fortunate timings;
on a build without network chip support the warnings appear.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1133/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| arch/mips/pci/pci-sb1250.c: In function sb1250_pcibios_init:
| arch/mips/pci/pci-sb1250.c:257: warning: assignment makes integer from pointer without a cast
| arch/mips/pci/pci-sb1250.c:285: error: MAX_NR_CONSOLES undeclared (first use in this function)
| arch/mips/pci/pci-sb1250.c:285: error: (Each undeclared identifier is reported only once
| arch/mips/pci/pci-sb1250.c:285: error: for each function it appears in.)
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1136/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
|arch/mips/sibyte/swarm/setup.c:153:
| warning: large integer implicitly truncated to unsigned type
The field was changed in d9b26352 aka ("x86, setup: Store the boot
cursor state"). This patch changes the values back they way they were
before this extra field got introduced.
While here, the other two boards are also converted to C99 initializer.
Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1137/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
In the 64-bit kernel we use swapper_pg_dir for three different things.
1) xuseg mappings for kernel threads.
2) vmap mappings for all kernel-space accesses in xkseg.
3) vmap mappings for kernel modules in ksseg (kseg2).
Due to how the TLB refill handlers work, any mapping established in
xkseg or ksseg will also establish a xuseg mapping that should never
be used by the kernel.
In order to be able to use exceptions to trap NULL pointer
dereferences, we need to ensure that nothing is mapped at address
zero. Since vmap mappings in xkseg are reflected in xuseg, this means
we need to ensure that there are no vmap mappings established at the
start of xkseg. So we move back VMALLOC_START to avoid establishing
vmap mappings at the start of xkseg.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1129/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
commit 5a0e3ad6af
Author: Tejun Heo <tj@kernel.org>
Date: Wed Mar 24 17:04:11 2010 +0900
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
Since a while the few headers included don't drag in <linux/kernel.h>
anymore, thus no more prototype of printk() resulting in:
CC arch/mips/nxp/pnx8550/common/reset.o
/home/ralf/src/linux/upstream-linus/arch/mips/nxp/pnx8550/common/reset.c: In function 'pnx8550_machine_restart':
/home/ralf/src/linux/upstream-linus/arch/mips/nxp/pnx8550/common/reset.c:31: error: implicit declaration of function 'printk'
/home/ralf/src/linux/upstream-linus/arch/mips/nxp/pnx8550/common/reset.c:33: error: 'NULL' undeclared (first use in this function)
/home/ralf/src/linux/upstream-linus/arch/mips/nxp/pnx8550/common/reset.c:33: error: (Each undeclared identifier is reported only once
/home/ralf/src/linux/upstream-linus/arch/mips/nxp/pnx8550/common/reset.c:33: error: for each function it appears in.)
make[3]: *** [arch/mips/nxp/pnx8550/common/reset.o] Error 1
Fixed by including <linux/kernel.h>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
MUSB can supply upto 500mA such as, AM3517 and OMAP3EVM Rev >=E and thus
the 'power' field has to hold values above 255.
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The bypassing of this test is a leftover from 2.4 vintage
kernels, and is no longer appropriate, or even used by KGDB.
Currently KGDB uses probe_kernel_write() for all access to
memory via the KGDB core, so it can simply be deleted.
This fixes CVE-2010-1446.
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Paul Mackerras <paulus@samba.org>
CC: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Wufei <fei.wu@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
* master.kernel.org:/home/rmk/linux-2.6-arm:
ARM: 6061/1: PL061 GPIO: Bug fix - setting gpio for HIGH_LEVEL interrupt is not working.
ARM: 5957/1: ARM: RealView SD/MMC Card detection and write-protect using GPIOLIB
ARM: 6030/1: KS8695: enable console
ARM: 6060/1: PL061 GPIO: Setting gpio val after changing direction to OUT.
ARM: 6059/1: PL061 GPIO: Changing *_irq_chip_data with *_irq_data for real irqs.
ARM: 6023/1: update bcmring_defconfig to latest version and fix build error
ARM: fix build error in arch/arm/kernel/process.c
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip:
x86: Disable large pages on CPUs with Atom erratum AAE44
x86-64: Clear a 64-bit FS/GS base on fork if selector is nonzero
x86, mrst: Conditionally register cpu hotplug notifier for apbt
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
x86/PCI: compute Address Space length rather than using _LEN
x86/PCI: never allocate PCI MMIO resources below BIOS_END
The switch to using GPIOLIB broke the sd/mmc card detection on the
RealView development boards if GPIO_PL061 was not selected.
This patch selects GPIO_PL061 if GPIOLIB is selected.
The sense of the return value from mmc_status has also changed
and is corrected.
Signed-off-by: Colin Tuckley <colin.tuckley@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ACPI _CRS Address Space Descriptors have _MIN, _MAX, and _LEN. Linux has
been computing Address Spaces as [_MIN to _MIN + _LEN - 1]. Based on the
tests in the bug reports below, Windows apparently uses [_MIN to _MAX].
Per spec (ACPI 4.0, Table 6-40), for _CRS fixed-size, fixed location
descriptors, "_LEN must be (_MAX - _MIN + 1)", and when that's true, it
doesn't matter which way we compute the end. But of course, there are
BIOSes that don't follow this rule, and we're better off if Linux handles
those exceptions the same way as Windows.
This patch makes Linux use [_MIN to _MAX], as Windows seems to do. This
effectively reverts d558b483d5 and 03db42adfe and replaces them with
simpler code.
https://bugzilla.kernel.org/show_bug.cgi?id=14337 (round)
https://bugzilla.kernel.org/show_bug.cgi?id=15480 (truncate)
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Refresh ps3_defconfig to latest kernel sources and change
these kernel config options:
o CONFIG_USB_ANNOUNCE_NEW_DEVICES: n -> y
o CONFIG_USB_EHCI_TT_NEWSCHED: n -> y
o CONFIG_CMDLINE_BOOL: n -> y
o CONFIG_CMDLINE: n -> ""
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This ensures that the translations for unmapped IO mappings or
unmapped memory are properly removed from the MMU hash table
before such an unplug. Without this, the hypervisor refuses the
unplug operations due to those resources still being mapped by
the partition.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Firmware changed the way it represents memory and cpu affinity on POWER7.
Unfortunately the old method now caps the topology to work around issues
with legacy operating systems. For Linux to get the correct topology we
need to use the new form 1 affinity information.
We set the form 1 field in the client architecture, and if we see "1" in the
ibm,associativity-form property firmware supports form 1 affinity and
we should look at the first field in the ibm,associativity-reference-points
array. If not we use the second field as we always have.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This patch fixes a build failure introduced by 1d8393171 ("avr32: use
generic ptrace_resume code") which had the static keyword as a leftover.
arch/avr32/kernel/ptrace.c:32: error: static declaration of `user_enable_single_step' follows non-static declaration
include/linux/ptrace.h:268: error: previous declaration of `user_enable_single_step' was here
References:
[1]http://kisskb.ellerman.id.au/kisskb/buildresult/2448162/
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (39 commits)
omap: delete unused bootloader tag variables
omap: Devkit8000: Remove unused pins
omap: Devkit8000: Change position of init calls
omap: Devkit8000: Remove unnecessary include file
omap: Devkit8000: Fix typo in pin name
omap: Devkit8000: Add missing package selection
omap: Devkit8000: Fix typo in supplies
n8x0_defconfig: remove CONFIG_NILFS2_FS override
omap: board-sdp-flash.c: Fix typos in debug output
omap4: Fix McBSP4 base address
omap: rx51_defconfig: Remove CONFIG_SYSFS_DEPRECATED*=y options
omap: rx51_defconfig: Remove duplicate phonet
omap: fix a gpmc nand problem
AM3517: initialize i2c subsystem after mux subsystem
omap: remove one of the define of INT_34XX_BENCH_MPU_EMUL
omap: fix the compile error if CONFIG_MTD_NAND_OMAP2 is notenabled
OMAP4: Clocks: Change SPI Instance Names
omap: Devkit8000: Fix wrong usb port on Devkit8000
OMAP4: Fix for CONTROL register Base
OMAP4-HSMMC: FIX for MMC5 Controller IRQ Base
...
The following commit broke CONFIG_RELOCATABLE support on FSL Book-E
parts:
commit 549e8152de
Author: Paul Mackerras <paulus@samba.org>
Date: Sat Aug 30 11:43:47 2008 +1000
powerpc: Make the 64-bit kernel as a position-independent executable
The change to __va and __pa to use PAGE_OFFSET & MEMORY_START causes
problems on the Book-E parts because we don't know MEMORY_START until
after we parse the device tree. We need __va to work properly to even
parse the device tree so we have a chicken an egg. So go back to using
he other definition of __va/__pa on CONFIG_BOOKE and use the
PAGE_OFFSET/MEMORY_START version on "Classic" PPC64.
Also updated casts to handle phys_addr_t being a different size from
unsigned long (ie 36-bit physical on PPC32).
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
When we move a PCI device or assign resources to a device not configured
by the BIOS, we want to avoid the BIOS region below 1MB. Note that if the
BIOS places devices below 1MB, we leave them there.
See https://bugzilla.kernel.org/show_bug.cgi?id=15744
and https://bugzilla.kernel.org/show_bug.cgi?id=15841
Tested-by: Andy Isaacson <adi@hexapodia.org>
Tested-by: Andy Bailey <bailey@akamai.com>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: Ensure we re-enable devices on resume
x86/PCI: parse additional host bridge window resource types
PCI: revert broken device warning
PCI aerdrv: use correct bit defines and add 2ms delay to aer_root_reset
x86/PCI: ignore Consumer/Producer bit in ACPI window descriptions
This is a standalone version of VMware Balloon driver. Ballooning is a
technique that allows hypervisor dynamically limit the amount of memory
available to the guest (with guest cooperation). In the overcommit
scenario, when hypervisor set detects that it needs to shuffle some
memory, it instructs the driver to allocate certain number of pages, and
the underlying memory gets returned to the hypervisor. Later hypervisor
may return memory to the guest by reattaching memory to the pageframes and
instructing the driver to "deflate" balloon.
We are submitting a standalone driver because KVM maintainer (Avi Kivity)
expressed opinion (rightly) that our transport does not fit well into
virtqueue paradigm and thus it does not make much sense to integrate with
virtio.
There were also some concerns whether current ballooning technique is the
right thing. If there appears a better framework to achieve this we are
prepared to evaluate and switch to using it, but in the meantime we'd like
to get this driver upstream.
We want to get the driver accepted in distributions so that users do not
have to deal with an out-of-tree module and many distributions have
"upstream first" requirement.
The driver has been shipping for a number of years and users running on
VMware platform will have it installed as part of VMware Tools even if it
will not come from a distribution, thus there should not be additional
risk in pulling the driver into mainline. The driver will only activate
if host is VMware so everyone else should not be affected at all.
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Atom erratum AAE44/AAF40/AAG38/AAH41:
"If software clears the PS (page size) bit in a present PDE (page
directory entry), that will cause linear addresses mapped through this
PDE to use 4-KByte pages instead of using a large page after old TLB
entries are invalidated. Due to this erratum, if a code fetch uses
this PDE before the TLB entry for the large page is invalidated then
it may fetch from a different physical address than specified by
either the old large page translation or the new 4-KByte page
translation. This erratum may also cause speculative code fetches from
incorrect addresses."
[http://download.intel.com/design/processor/specupdt/319536.pdf]
Where as commit 211b3d03c7 seems to
workaround errata AAH41 (mixed 4K TLBs) it reduces the window of
opportunity for the bug to occur and does not totally remove it. This
patch disables mixed 4K/4MB page tables totally avoiding the page
splitting and not tripping this processor issue.
This is based on an original patch by Colin King.
Originally-by: Colin Ian King <colin.king@canonical.com>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
LKML-Reference: <1269271251-19775-1-git-send-email-colin.king@canonical.com>
Cc: <stable@kernel.org>
When we do a thread switch, we clear the outgoing FS/GS base if the
corresponding selector is nonzero. This is taken by __switch_to() as
an entry invariant; it does not verify that it is true on entry.
However, copy_thread() doesn't enforce this constraint, which can
result in inconsistent results after fork().
Make copy_thread() match the behavior of __switch_to().
Reported-and-tested-by: Samuel Thibault <samuel.thibault@inria.fr>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
LKML-Reference: <4BD1E061.8030605@zytor.com>
Cc: <stable@kernel.org>
They are not needed and add over 512 bytes to kernel data.
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Old code from original patch contains beagle board pins that are
not available on the Devkit8000.
Signed-off-by: Thomas Weber <weber@corscience.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Change position of calling serial and ethernet initialization.
Signed-off-by: Thomas Weber <weber@corscience.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Devkit8000 uses the CUS package for OMAP3530.
This patch adds missing package selection for CUS and enables
CONFIG_MUX.
Replace whitespace with tab in Kconfig.
Signed-off-by: Thomas Weber <weber@corscience.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
