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The implementation we just revived has issues, such as using a
Kconfig-defined virtual address area in kernel space that nothing
actually carves out (and thus will overlap whatever is there),
or having some dependencies on being self contained in a single
PTE page which adds unnecessary constraints on the kernel virtual
address space.
This fixes it by using more classic PTE accessors and automatically
locating the area for consistent memory, carving an appropriate hole
in the kernel virtual address space, leaving only the size of that
area as a Kconfig option. It also brings some dma-mask related fixes
from the ARM implementation which was almost identical initially but
grew its own fixes.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Make FIXADDR_TOP a compile time constant and cleanup a
couple of definitions relative to the layout of the kernel
address space on ppc32. We also print out that layout at
boot time for debugging purposes.
This is a pre-requisite for properly fixing non-coherent
DMA allocactions.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc: Fix PCI ROM access
powerpc/pseries: Really fix the oprofile CPU type on pseries
serial/nwpserial: Fix wrong register read address and add interrupt acknowledge.
powerpc/cell: Make ptcal more reliable
powerpc: Allow mem=x cmdline to work with 4G+
powerpc/mpic: Fix incorrect allocation of interrupt rev-map
powerpc: Fix oprofile sampling of marked events on POWER7
powerpc/iseries: Fix pci breakage due to bad dma_data initialization
powerpc: Fix mktree build error on Mac OS X host
powerpc/virtex: Fix duplicate level irq events.
powerpc/virtex: Add uImage to the default images list
powerpc/boot: add simpleImage.* to clean-files list
powerpc/8xx: Update defconfigs
powerpc/embedded6xx: Update defconfigs
powerpc/86xx: Update defconfigs
powerpc/85xx: Update defconfigs
powerpc/83xx: Update defconfigs
powerpc/fsl_soc: Remove mpc83xx_wdt_init, again
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We're currently choking on mem=4g (and above) due to memory_limit
being specified as an unsigned long. Make memory_limit
phys_addr_t to fix this.
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Commit 4fc665b88a79a45bae8bbf3a05563c27c7337c3d "powerpc: Merge 32 and
64-bit dma code" made changes to the PCI initialisation code that added
an assignment to archdata.dma_data but only for 32 bit code. Commit
7eef440a545c7f812ed10b49d4a10a351df9cad6 "powerpc/pci: Cosmetic cleanups
of pci-common.c" removed the conditional compilation. Unfortunately,
the iSeries code setup the archdata.dma_data before that assignment was
done - effectively overwriting the dma_data with NULL.
Fix this up by moving the iSeries setup of dma_data into a
pci_dma_dev_setup callback.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Some drivers using of_register_platform_driver() wrapper break on sparc
because the wrapper isn't in the header file. This patch moves it from
Microblaze and PowerPC implementations and makes it common code.
Fixes this sparc64 allmodconfig build error (at least):
drivers/leds/leds-gpio.c: In function `gpio_led_init':
drivers/leds/leds-gpio.c:295: error: implicit declaration of function `of_register_platform_driver'
drivers/leds/leds-gpio.c: In function `gpio_led_exit':
drivers/leds/leds-gpio.c:311: error: implicit declaration of function `of_unregister_platform_driver'
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
powerpc/ps3: Fix build error on UP
powerpc/cell: Select PCI for IBM_CELL_BLADE AND CELLEB
powerpc: ppc32 needs elf_read_implies_exec()
powerpc/86xx: Add device_type entry to soc for ppc9a
powerpc/44x: Correct memory size calculation for denali-based boards
maintainers: Fix PowerPC 4xx git tree
powerpc: fix for long standing bug noticed by gcc 4.4.0
Revert "powerpc: Add support for early tlbilx opcode"
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On ppc64 we implemented elf_read_implies_exec() for 32-bit binaries
because old toolchains had bugs where they didn't mark program
segments executable that needed to be. For some reason we didn't do
this on ppc32 builds. This hadn't been an issue until commit 8d30c14c
("powerpc/mm: Rework I$/D$ coherency (v3)"), which had as a side
effect that we are now enforcing execute permissions to some extent on
32-bit 4xx and Book E processors.
This fixes it by defining elf_read_implies_exec on 32-bit to turn on
the read-implies-exec behaviour on programs that are sufficiently old
that they don't have a PT_GNU_STACK program header.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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The section .text.init.refok is deprecated and __REF (.ref.text)
should be used in assembly files instead. This patch cleans up a few
uses of .text.init.refok in the powerpc architecture.
Signed-off-by: Tim Abbott <tabbott@mit.edu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This reverts commit e9965577406a2148ade97b5e0ce7c448b4ba4ef6. Our HW
guys were able to fix this so it never sees the light of day.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Now that ppc32 implements address randomization it also wants to inherit
personality flags like ADDR_NO_RANDOMIZE across exec, for things like
`setarch ppc -R' to work. But the ppc32 version of SET_PERSONALITY
forcefully sets PER_LINUX, clearing all personality flags. So be
careful about preserving the flags.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Richard Henderson pointed out that the powerpc __futex_atomic_op has a
bug: it will write the wrong value if the stwcx. fails and it has to
retry the lwarx/stwcx. loop, since 'oparg' will have been overwritten
by the result from the first time around the loop. This happens
because it uses the same register for 'oparg' (an input) as it uses
for the result.
This fixes it by using separate registers for 'oparg' and 'ret'.
Cc: stable@kernel.org
Signed-off-by: Paul Mackerras <paulus@samba.org>
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In commit 51dcdfec6a274afc1c6fce180d582add9ff512c0 ("parport: Use the
PCI IRQ if offered") parport_pc_probe_port() gained an irqflags arg.
This isn't being supplied on powerpc. This patch make powerpc fallback
to the old behaviour, that is using "0" for irqflags.
Fixes build failure:
In file included from drivers/parport/parport_pc.c:68:
arch/powerpc/include/asm/parport.h: In function 'parport_pc_find_nonpci_ports':
arch/powerpc/include/asm/parport.h:32: error: too few arguments to function 'parport_pc_probe_port'
arch/powerpc/include/asm/parport.h:32: error: too few arguments to function 'parport_pc_probe_port'
arch/powerpc/include/asm/parport.h:32: error: too few arguments to function 'parport_pc_probe_port'
make[3]: *** [drivers/parport/parport_pc.o] Error 1
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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During the ISA 2.06 development the opcode for tlbilx changed and some
early implementations used to old opcode. Add support for a MMU_FTR
fixup to deal with this.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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The tlbilx opcode was not matching the Power ISA 2.06 arch spec.
The old opcode was an early suggested opcode that changed during the
2.06 architecture process.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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This fixes a problem reported by Sean MacLennan where loading any
module would cause an oops. We weren't marking the pages containing
the module text as having hardware execute permission, due to a bug
introduced in commit 8d1cf34e ("powerpc/mm: Tweak PTE bit combination
definitions"), hence trying to execute the module text caused an
exception on processors that support hardware execute permission.
This adds _PAGE_HWEXEC to the definitions of PAGE_KERNEL_X and
PAGE_KERNEL_ROX to fix this problem.
Reported-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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[paulus@samba.org: changed to use syscall numbers 320 and 321 since
perf_counters is currently using 319.]
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Instead of checking for known events, pass in all 1s so we handle future
event types. We were currently missing the IO event type.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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PHYP tells us how often a shared processor dispatch changed physical cpus.
This can highlight performance problems caused by the hypervisor.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Remove duplicated #include's in
- arch/powerpc/include/asm/ps3fb.h
- arch/powerpc/kernel/setup-common.c
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into merge
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CoreInt provides a mechansim to deliver the IRQ vector directly
into the core on an interrupt (via the SPR EPR) rather than having
to go IACK on the PIC. This is suppose to provide an improvment
in interrupt latency by reducing the time to get the IRQ vector.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask: (36 commits)
cpumask: remove cpumask allocation from idle_balance, fix
numa, cpumask: move numa_node_id default implementation to topology.h, fix
cpumask: remove cpumask allocation from idle_balance
x86: cpumask: x86 mmio-mod.c use cpumask_var_t for downed_cpus
x86: cpumask: update 32-bit APM not to mug current->cpus_allowed
x86: microcode: cleanup
x86: cpumask: use work_on_cpu in arch/x86/kernel/microcode_core.c
cpumask: fix CONFIG_CPUMASK_OFFSTACK=y cpu hotunplug crash
numa, cpumask: move numa_node_id default implementation to topology.h
cpumask: convert node_to_cpumask_map[] to cpumask_var_t
cpumask: remove x86 cpumask_t uses.
cpumask: use cpumask_var_t in uv_flush_tlb_others.
cpumask: remove cpumask_t assignment from vector_allocation_domain()
cpumask: make Xen use the new operators.
cpumask: clean up summit's send_IPI functions
cpumask: use new cpumask functions throughout x86
x86: unify cpu_callin_mask/cpu_callout_mask/cpu_initialized_mask/cpu_sibling_setup_mask
cpumask: convert struct cpuinfo_x86's llc_shared_map to cpumask_var_t
cpumask: convert node_to_cpumask_map[] to cpumask_var_t
x86: unify 32 and 64-bit node_to_cpumask_map
...
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* git://git.kernel.org/pub/scm/linux/kernel/git/kyle/rtc-parisc:
powerpc/ps3: Add rtc-ps3
powerpc: Hook up rtc-generic, and kill rtc-ppc
m68k: Hook up rtc-generic
parisc: rtc: Rename rtc-parisc to rtc-generic
parisc: rtc: Add missing module alias
parisc: rtc: platform_driver_probe() fixups
parisc: rtc: get_rtc_time() returns unsigned int
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Pass the original flags to rwlock arch-code, so that it can re-enable
interrupts if implemented for that architecture.
Initially, make __raw_read_lock_flags and __raw_write_lock_flags stubs
which just do the same thing as non-flags variants.
Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: <linux-arch@vger.kernel.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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While normally we don't use the math emulation code on ppc64 it can be
useful for doing things like emulating the embedded FP instructions.
Since performance isn't critical in this scenario its easier to keep
the sizes of the various math-emu the same as on ppc32.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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SPEFSCR is a user space register and doesn't conflict with anything.
Moving the defines of the various bit fields makes some emulation
code have fewer ifdefs
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Create a real RTC driver for PS3, and unhook the deprecated
ppc_md.[gs]et_rtc_time.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
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git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (88 commits)
PCI: fix HT MSI mapping fix
PCI: don't enable too much HT MSI mapping
x86/PCI: make pci=lastbus=255 work when acpi is on
PCI: save and restore PCIe 2.0 registers
PCI: update fakephp for bus_id removal
PCI: fix kernel oops on bridge removal
PCI: fix conflict between SR-IOV and config space sizing
powerpc/PCI: include pci.h in powerpc MSI implementation
PCI Hotplug: schedule fakephp for feature removal
PCI Hotplug: rename legacy_fakephp to fakephp
PCI Hotplug: restore fakephp interface with complete reimplementation
PCI: Introduce /sys/bus/pci/devices/.../rescan
PCI: Introduce /sys/bus/pci/devices/.../remove
PCI: Introduce /sys/bus/pci/rescan
PCI: Introduce pci_rescan_bus()
PCI: do not enable bridges more than once
PCI: do not initialize bridges more than once
PCI: always scan child buses
PCI: pci_scan_slot() returns newly found devices
PCI: don't scan existing devices
...
Fix trivial append-only conflict in Documentation/feature-removal-schedule.txt
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Remove unused/duplicate cruft from asm/suspend.h:
- x86_32: remove unused acpi code
- powerpc: remove duplicate prototypes, see linux/suspend.h
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: Paul Mundt <lethal@linux-sh.org>
Acked-by: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Use debug_kmap_atomic in kmap_atomic, kmap_atomic_pfn, and
iomap_atomic_prot_pfn.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
Conflicts:
arch/x86/include/asm/topology.h
drivers/oprofile/buffer_sync.c
(Both cases: changed in Linus' tree, removed in Ingo's).
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* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask:
oprofile: Thou shalt not call __exit functions from __init functions
cpumask: remove the now-obsoleted pcibus_to_cpumask(): generic
cpumask: remove cpumask_t from core
cpumask: convert rcutorture.c
cpumask: use new cpumask_ functions in core code.
cpumask: remove references to struct irqaction's mask field.
cpumask: use mm_cpumask() wrapper: kernel/fork.c
cpumask: use set_cpu_active in init/main.c
cpumask: remove node_to_first_cpu
cpumask: fix seq_bitmap_*() functions.
cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL
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Conflicts:
arch/x86/kernel/cpu/common.c
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Everyone defines it, and only one person uses it
(arch/mips/sgi-ip27/ip27-nmi.c). So just open code it there.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-mips@linux-mips.org
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Manual merge of:
arch/powerpc/include/asm/elf.h
drivers/i2c/busses/i2c-mpc.c
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (37 commits)
fs: avoid I_NEW inodes
Merge code for single and multiple-instance mounts
Remove get_init_pts_sb()
Move common mknod_ptmx() calls into caller
Parse mount options just once and copy them to super block
Unroll essentials of do_remount_sb() into devpts
vfs: simple_set_mnt() should return void
fs: move bdev code out of buffer.c
constify dentry_operations: rest
constify dentry_operations: configfs
constify dentry_operations: sysfs
constify dentry_operations: JFS
constify dentry_operations: OCFS2
constify dentry_operations: GFS2
constify dentry_operations: FAT
constify dentry_operations: FUSE
constify dentry_operations: procfs
constify dentry_operations: ecryptfs
constify dentry_operations: CIFS
constify dentry_operations: AFS
...
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Due to a different size of ino_t ustat needs a compat handler, but
currently only x86 and mips provide one. Add a generic compat_sys_ustat
and switch all architectures over to it. Instead of doing various
user copy hacks compat_sys_ustat just reimplements sys_ustat as
it's trivial. This was suggested by Arnd Bergmann.
Found by Eric Sandeen when running xfstests/017 on ppc64, which causes
stack smashing warnings on RHEL/Fedora due to the too large amount of
data writen by the syscall.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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On powerpc64 machines running 32-bit userspace, we can get garbage bits in the
stack pointer passed into the kernel. Most places handle this correctly, but
the signal handling code uses the passed value directly for allocating signal
stack frames.
This fixes the issue by introducing a get_clean_sp function that returns a
sanitized stack pointer. For 32-bit tasks on a 64-bit kernel, the stack
pointer is masked correctly. In all other cases, the stack pointer is simply
returned.
Additionally, we pass an 'is_32' parameter to get_sigframe now in order to
get the properly sanitized stack. The callers are know to be 32 or 64-bit
statically.
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'header-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits)
x86: headers cleanup - setup.h
emu101k1.h: fix duplicate include of <linux/types.h>
compiler-gcc4: conditionalize #error on __KERNEL__
remove __KERNEL_STRICT_NAMES
make netfilter use strict integer types
make drm headers use strict integer types
make MTD headers use strict integer types
make most exported headers use strict integer types
make exported headers use strict posix types
unconditionally include asm/types.h from linux/types.h
make linux/types.h as assembly safe
Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h
headers_check fix cleanup: linux/reiserfs_fs.h
headers_check fix cleanup: linux/nubus.h
headers_check fix cleanup: linux/coda_psdev.h
headers_check fix: x86, setup.h
headers_check fix: x86, prctl.h
headers_check fix: linux/reinserfs_fs.h
headers_check fix: linux/socket.h
headers_check fix: linux/nubus.h
...
Manually fix trivial conflicts in:
include/linux/netfilter/xt_limit.h
include/linux/netfilter/xt_statistic.h
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1750 commits)
ixgbe: Allow Priority Flow Control settings to survive a device reset
net: core: remove unneeded include in net/core/utils.c.
e1000e: update version number
e1000e: fix close interrupt race
e1000e: fix loss of multicast packets
e1000e: commonize tx cleanup routine to match e1000 & igb
netfilter: fix nf_logger name in ebt_ulog.
netfilter: fix warning in ebt_ulog init function.
netfilter: fix warning about invalid const usage
e1000: fix close race with interrupt
e1000: cleanup clean_tx_irq routine so that it completely cleans ring
e1000: fix tx hang detect logic and address dma mapping issues
bridge: bad error handling when adding invalid ether address
bonding: select current active slave when enslaving device for mode tlb and alb
gianfar: reallocate skb when headroom is not enough for fcb
Bump release date to 25Mar2009 and version to 0.22
r6040: Fix second PHY address
qeth: fix wait_event_timeout handling
qeth: check for completion of a running recovery
qeth: unregister MAC addresses during recovery.
...
Manually fixed up conflicts in:
drivers/infiniband/hw/cxgb3/cxio_hal.h
drivers/infiniband/hw/nes/nes_nic.c
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Conflicts:
drivers/net/wimax/i2400m/usb-notif.c
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So, KVM needs to read tlbcam_index to know exactly
which TLB1 entry is unused by host.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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After the rewrite of KVM's debug support, this code doesn't even build any
more.
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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e500 has additional interrupt vectors (and corresponding IVORs) for SPE and
performance monitoring interrupts.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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When itlb or dtlb miss happens, E500 needs to update some mmu registers.
So that the auto-load mechanism can work on E500 when write a tlb entry.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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Kernel for E500 need clear dbsr when startup.
So add dbsr register in kvm_vcpu_arch for BOOKE.
Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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