37183 Commits

Author SHA1 Message Date
Linus Torvalds
085ff82c9c Merge git://git.infradead.org/iommu-2.6
* git://git.infradead.org/iommu-2.6:
  intel-iommu: Don't use identity mapping for PCI devices behind bridges
  intel-iommu: Use iommu_should_identity_map() at startup time too.
  intel-iommu: No mapping for non-PCI devices
  intel-iommu: Restore DMAR_BROKEN_GFX_WA option for broken graphics drivers
  intel-iommu: Add iommu_should_identity_map() function
  intel-iommu: Fix reattaching of devices to identity mapping domain
  intel-iommu: Don't set identity mapping for bypassed graphics devices
  intel-iommu: Fix dma vs. mm page confusion with aligned_nrpages()
2009-07-06 14:03:59 -07:00
Peter Oberparleiter
f386c61fe1 gcov: exclude code operating in userspace from profiling
Fix for this issue on x86_64:

rostedt@goodmis.org wrote:
> On bootup of the latest kernel my init segfaults. Debugging it,
> I found  that vread_tsc (a vsyscall) increments some strange
> kernel memory:
>
> 0000000000000000 <vread_tsc>:
>    0:   55                      push   %rbp
>    1:   48 ff 05 00 00 00 00    incq   0(%rip)
>                         # 8 <vread_tsc+0x8>
>                         4: R_X86_64_PC32        .bss+0x3c
>    8:   48 89 e5                mov    %rsp,%rbp
>    b:   66 66 90                xchg   %ax,%ax
>    e:   48 ff 05 00 00 00 00    incq   0(%rip)
>                         # 15 <vread_tsc+0x15>
>                         11: R_X86_64_PC32       .bss+0x44
>   15:   66 66 90                xchg   %ax,%ax
>   18:   48 ff 05 00 00 00 00    incq   0(%rip)
>                         # 1f <vread_tsc+0x1f>
>                         1b: R_X86_64_PC32       .bss+0x4c
>   1f:   0f 31                   rdtsc
>
>
> Those "incq" is very bad to happen in vsyscall memory, since
> userspace can not modify it. You need to make something prevent
> profiling of vsyscall  memory (like I do with ftrace).

Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-06 13:57:03 -07:00
Mike Rapoport
22fe84394f [ARM] pxa: fix ULPI_{DIR,NXT,STP} MFP defines
Attepmpt to configure ULPI pins gives the following compile error:
  CC      arch/arm/mach-pxa/cm-x300.o
  arch/arm/mach-pxa/cm-x300.c:155: error: 'MFP_MFP_AF0' undeclared here (not in a function)
  arch/arm/mach-pxa/cm-x300.c:155: error: 'MFP_MFP_DS01X' undeclared here (not in a function)
  make[2]: *** [arch/arm/mach-pxa/cm-x300.o] Error 1
  make[1]: *** [arch/arm/mach-pxa] Error 2
  make: *** [sub-make] Error 2

Fix it.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-07-06 18:11:10 +08:00
Michal Simek
db6e3f91ef microblaze: Fix cast warning for init.c
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-06 10:27:03 +02:00
Michal Simek
4ae7833815 microblaze: Wire up new syscalls
Wire up new syscalls rt_tgsigqueueinfo and perf_counter_open.

Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-06 10:27:01 +02:00
Arnd Bergmann
e513588f75 microblaze: use generic syscalls.h
The prototypes in syscalls.h all make sense for
microblaze, but for some of them, the actual implementation
in sys_microblaze.c needs to be adapted.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-06 10:26:59 +02:00
Arnd Bergmann
3183e06863 microblaze: clean up signal handling
When legacy signal handling is disabled, the
arch/microblaze/kernel/signal.c implementation can
be much simpler, as most of it is handled generically
from kernel/signal.c.

This is also a prerequisite for using the generic
asm/unistd.h, which does not provide __NR_sigreturn,
because this macro is referenced by the current signal.c
implementation.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-06 10:26:57 +02:00
Remis Lima Baima
0a58458341 microblaze: convert all simple headers to use asm-generic
All the simple microblaze header files were adapted to use their
asm-generic implementations. These files are more simple and were quite
straightforward to change.

fb.h, vga.h and parport.h previously did not exist, using
the generic version makes it possible to build more drivers
successfully in allyesonfig.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-06 10:26:55 +02:00
Remis Lima Baima
14f8738976 microblaze: use the generic lib/checksum.c
The microblaze checksum code is mostly identical to
the asm-generic+lib version, so use that instead.

Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-06 10:26:52 +02:00
Arnd Bergmann
81d8279ea3 microblaze: fall back on generic header files for the ABI
Almost all of the ABI relevant header files now have generic
versions, so use those now in order to reduce the amount
of architecture specific code.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Simek <monstr@monstr.eu>
2009-07-06 10:26:50 +02:00
Russell King
65b1bfc13e [ARM] pgtable: file pte layout documentation
Document the layout of our file PTE entries.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-05 15:31:35 +01:00
Russell King
fb93a1c75e [ARM] pgtable: swp pte layout documentation, definitions, and check
Document the layout of our swp PTE entries, adding definitions for
the bit masks/shifts/sizes, and implement MAX_SWAPFILES_CHECK()
such that we fail to build if we are unable to properly encode the
swp type field.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-05 15:31:26 +01:00
Russell King
ba9b42e4ff [ARM] export __cpu_flush_dcache_page
Now required for libsas:

  Kernel: arch/arm/boot/Image is ready
  Kernel: arch/arm/boot/zImage is ready
  Building modules, stage 2.
  MODPOST 1096 modules
ERROR: "xscale_flush_kern_dcache_page" [drivers/scsi/libsas/libsas.ko] undefined!

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-05 15:25:00 +01:00
Josh Boyer
a22ebd069d powerpc/44x: Fix build error with -Werror for Warp platform
With -Werror enabled during the build, the warp.c file fails to build
due to the temp_isr function not containing a return statement.  This
fixes the build error and documents that the function never returns.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2009-07-05 10:02:15 -04:00
Sean MacLennan
ba703e1a7a powerpc/4xx: Have Warp take advantage of GPIO LEDs default-state = keep
The GPIO LEDS driver now has a default state of "keep".  Update the Warp DTS
and platform file to take advantage of this new state.  This removes the
hardcoding of the two LEDs on the Warp.

Signed-off-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2009-07-06 08:56:01 -04:00
Sean MacLennan
7c3a742a86 powerpc/44x: Update Warp defconfig
* Enable GPIO LEDS and LED triggers
* Move to SLUB
* Enable HOTPLUG
* Enable timestamps on printks
* Enable UBIFS
* Enable in-kernel config

Signed-off-by: Sean MacLennan <smaclennan@pikatech.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2009-07-06 08:53:16 -04:00
Akinobu Mita
febe04de3b x86: fix usage of bios intcall()
Some intcall() misuses the input biosregs as output in
cf06de7b9cdd3efee7a59dced1977b3c21d43732

This fixes the problem vga=ask boot option doesn't show enough modes.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
LKML-Reference: <20090701021307.GA3127@localhost.localdomain>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-07-04 12:56:32 -07:00
Linus Torvalds
de481ba925 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6: (27 commits)
  parisc: use generic atomic64 on 32-bit
  parisc: superio: fix build breakage
  parisc: Fix PCI resource allocation on non-PAT SBA machines
  parisc: perf: wire up sys_perf_counter_open
  parisc: add task_pt_regs macro
  parisc: wire sys_perf_counter_open to sys_ni_syscall
  parisc: inventory.c, fix bloated stack frame
  parisc: processor.c, fix bloated stack frame
  parisc: fix compile warning in mm/init.c
  parisc: remove dead code from sys_parisc32.c
  parisc: wire up rt_tgsigqueueinfo
  parisc: ensure broadcast tlb purge runs single threaded
  parisc: fix "delay!" timer handling
  parisc: fix mismatched parenthesis in memcpy.c
  parisc: Fix gcc 4.4 warning in lba_pci.c
  parisc: add parameter to read_cr16()
  parisc: decode_exc.c should include kernel.h
  parisc: remove obsolete hw_interrupt_type
  parisc: fix irq compile bugs in arch/parisc/kernel/irq.c
  parisc: advertise PCI devs after "assign_resources"
  ...

Manually fixed up trivial conflicts in tools/perf/perf.h due to addition
of SH vs HPPA perf-counter support.
2009-07-04 10:35:12 -07:00
Linus Torvalds
4806626782 Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: Fix CONFIG_FLATMEM version of pfn_valid()
  MIPS: Reorganize Cavium OCTEON PCI support.
  Update Yoichi Yuasa's e-mail address
  MIPS: Allow suspend and hibernation again on uniprocessor kernels.
  MIPS: 64-bit: Fix o32 core dump
  MIPS: BC47xx: Fix SSB irq setup
  MIPS: CMP: Update sync-r4k for current kernel
  MIPS: CMP: Move gcmp_probe to before the SMP ops
  MIPS: CMP: activate CMP support
  MIPS: CMP: Extend IPI handling to CPU number
  MIPS: CMP: Extend the GIC IPI interrupts beyond 32
  MIPS: Define __arch_swab64 for all mips r2 cpus
  MIPS: Update VR41xx GPIO driver to use gpiolib
  MIPS: Hookup new syscalls sys_rt_tgsigqueueinfo and sys_perf_counter_open.
  MIPS: Malta: Remove unnecessary function prototypes
  MIPS: MT: Remove unnecessary semicolons
  MIPS: Add support for Texas Instruments AR7 System-on-a-Chip
2009-07-04 09:47:01 -07:00
Linus Torvalds
29f31773e0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes:
  kbuild: finally remove the obsolete variable $TOPDIR
  gitignore: ignore scripts/ihex2fw
  Kbuild: Disable the -Wformat-security gcc flag
  gitignore: ignore gcov output files
  kbuild: deb-pkg ship changelog
  Add new __init_task_data macro to be used in arch init_task.c files.
  asm-generic/vmlinux.lds.h: shuffle INIT_TASK* macro names in vmlinux.lds.h
  Add new macros for page-aligned data and bss sections.
  asm-generic/vmlinux.lds.h: Fix up RW_DATA_SECTION definition.
2009-07-04 09:46:01 -07:00
Magnus Damm
9731f4a202 sh: add r8a66597 usb0 host to the se7724 board
Add USB host support for port CN27 on the Solution Engine 7724
board. The r8a66597-hcd driver is hooked up as a platform device
and some registers are configured to enable the USB host function.
The hardware driving the USB port is the on-chip USB0 block in
the sh7724 processor configured as USB host controller.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-05 00:23:56 +09:00
David Woodhouse
62edf5dc4a intel-iommu: Restore DMAR_BROKEN_GFX_WA option for broken graphics drivers
We need to give people a little more time to fix the broken drivers.
Re-introduce this, but tied in properly with the 'iommu=pt' support this
time. Change the config option name and make it default to 'no' too.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-07-04 10:59:46 +01:00
Eric Dumazet
a79f0da80a x86: atomic64: Inline atomic64_read() again
Now atomic64_read() is light weight (no register pressure and
small icache), we can inline it again.

Also use "=&A" constraint instead of "+A" to avoid warning
about unitialized 'res' variable. (gcc had to force 0 in eax/edx)

  $ size vmlinux.prev vmlinux.after
     text    data     bss     dec     hex filename
  4908667  451676 1684868 7045211  6b805b vmlinux.prev
  4908651  451676 1684868 7045195  6b804b vmlinux.after

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
LKML-Reference: <4A4E1AA2.30002@gmail.com>
[ Also fix typo in atomic64_set() export ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-04 11:45:00 +02:00
Ingo Molnar
ddf9a003d3 x86: atomic64: Clean up atomic64_sub_and_test() and atomic64_add_negative()
Linus noticed that the variable name 'old_val' is
confusingly named in these functions - the correct
naming is 'new_val'.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
LKML-Reference: <alpine.LFD.2.01.0907030942260.3210@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 21:15:08 +02:00
Ingo Molnar
3a8d1788b3 x86: atomic64: Improve atomic64_xchg()
Remove the read-first logic from atomic64_xchg() and simplify
the loop.

This function was the last user of __atomic64_read() - remove it.

Also, change the 'real_val' assumption from the somewhat quirky
1ULL << 32 value to the (just as arbitrary, but simpler) value
of 0.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
LKML-Reference: <tip-05118ab8859492ac9ddda0154cf90e37b0a4a0b0@git.kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 20:23:55 +02:00
Ingo Molnar
1fde902d52 x86: atomic64: Export APIs to modules
atomic64_t primitives are used by a handful of drivers,
so export the APIs consistently. These were inlined
before.

Also mark atomic64_32.o a core object, so that the symbols
are available even if not linked to core kernel pieces.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
LKML-Reference: <tip-05118ab8859492ac9ddda0154cf90e37b0a4a0b0@git.kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 20:23:52 +02:00
Ralf Baechle
baf9227802 MIPS: Fix CONFIG_FLATMEM version of pfn_valid()
For systems which do not define PHYS_OFFSET as 0 pfn_valid() may falsely
have returned 0 on most configurations.  Bug introduced by commit
752fbeb2e3555c0d236e992f1195fd7ce30e728d (linux-mips.org) rsp.
6f284a2ce7b8bc49cb8455b1763357897a899abb (kernel.org) titled "[MIPS]
FLATMEM: introduce PHYS_OFFSET."

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:29 +01:00
David Daney
01a6221a6a MIPS: Reorganize Cavium OCTEON PCI support.
Move the cavium PCI files to the arch/mips/pci directory.  Also cleanup
comment formatting and code layout.  Code from pci-common.c, was moved
into other files.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:29 +01:00
Yoichi Yuasa
ada8e9514b Update Yoichi Yuasa's e-mail address
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:29 +01:00
Ralf Baechle
3f5b3e17f7 MIPS: Allow suspend and hibernation again on uniprocessor kernels.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
2009-07-03 15:45:28 +01:00
Yong Zhang
cad9bc6904 MIPS: 64-bit: Fix o32 core dump
If an o32 process generates a core dump on a 64 bit kernel, the core file
will not be correctly recognized. This is because ELF_CORE_COPY_REGS and
ELF_CORE_COPY_TASK_REGS are not correctly defined for o32 and will use
the default register set which would be CONFIG_64BIT in asm/elf.h.

So we'll switch to use the right register defines in this situation by
checking for WANT_COMPAT_REG_H and use the right defines of
ELF_CORE_COPY_REGS and ELF_CORE_COPY_TASK_REGS.

[Ralf: made ELF_CORE_COPY_TASK_REGS() bullet-proof against funny arguments.]

Signed-off-by: Yong Zhang <yong.zhang@windriver.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:27 +01:00
Tim Anderson
eb9b5141a9 MIPS: CMP: Update sync-r4k for current kernel
This revises the sync-4k so it will boot and operate since the removal of
expirelo from the timer code.

Signed-off-by: Tim Anderson <tanderson@mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:27 +01:00
Tim Anderson
47b178bb69 MIPS: CMP: Move gcmp_probe to before the SMP ops
This is to move the gcmp_probe call to before the use of and selection of
the smp_ops functions. This allows malta with 1004K to work.

Signed-off-by: Tim Anderson <tanderson@mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:26 +01:00
Tim Anderson
0365070f05 MIPS: CMP: activate CMP support
Most of the CMP support was added before, this mostly correct compile
problems but adds a platform specific translation for the interrupt number
based on cpu number.

Signed-off-by: Tim Anderson <tanderson@mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:26 +01:00
Tim Anderson
a214cef9a5 MIPS: CMP: Extend IPI handling to CPU number
This takes the current IPI interrupt assignment from the fix number of 4
to the number of CPUs defined in the system.

Signed-off-by: Tim Anderson <tanderson@mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:26 +01:00
Tim Anderson
9306c8def6 MIPS: CMP: Extend the GIC IPI interrupts beyond 32
This patch extends the GIC interrupt handling beyond the current 32 bit
range as well as extending the number of interrupts based on the number
of CPUs.

Signed-off-by: Tim Anderson <tanderson@mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:25 +01:00
David Daney
b53d4d1f8d MIPS: Define __arch_swab64 for all mips r2 cpus
Some CPUs implement mipsr2, but because they are a super-set of mips64r2 do
not define CONFIG_CPU_MIPS64_R2.  Cavium OCTEON falls into this category.
We would still like to use the optimized implementation, so since we have
already checked for CONFIG_CPU_MIPSR2, checking for CONFIG_64BIT instead of
CONFIG_CPU_MIPS64_R2 is sufficient.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:25 +01:00
Yoichi Yuasa
27fdd325da MIPS: Update VR41xx GPIO driver to use gpiolib
Signed-off-by: Yoichi Yuasa <yyuasa@linux.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:25 +01:00
David Daney
69f16c9a86 MIPS: Hookup new syscalls sys_rt_tgsigqueueinfo and sys_perf_counter_open.
[Ralf: I fixed up the numbering in the comment in scall64-n32.S.]

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:24 +01:00
Dmitri Vorobiev
d7e014db37 MIPS: Malta: Remove unnecessary function prototypes
Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@movial.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:24 +01:00
Joe Perches
52a7a27cd8 MIPS: MT: Remove unnecessary semicolons
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:23 +01:00
Florian Fainelli
7ca5dc145b MIPS: Add support for Texas Instruments AR7 System-on-a-Chip
This patch adds support for the Texas Instruments AR7 System-on-a-Chip.
It supports the TNETD7100, 7200 and 7300 versions of the SoC.

Signed-off-by: Matteo Croce <matteo@openwrt.org>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Eugene Konev <ejka@openwrt.org>
Signed-off-by: Nicolas Thill <nico@openwrt.org>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-07-03 15:45:23 +01:00
Eric Dumazet
67d7178f8f x86: atomic64: Improve atomic64_read()
Optimize atomic64_read() as a special open-coded
cmpxchg8b variant. This generates nicer code:

arch/x86/lib/atomic64_32.o:

   text	   data	    bss	    dec	    hex	filename
    435	      0	      0	    435	    1b3	atomic64_32.o.before
    431	      0	      0	    431	    1af	atomic64_32.o.after

md5:
   bd8ab95e69c93518578bfaf0ea3be4d9  atomic64_32.o.before.asm
   2bdfd4bd1f6b7b61b7fc127aef90ce3b  atomic64_32.o.after.asm

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
LKML-Reference: <alpine.LFD.2.01.0907021653030.3210@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 14:42:59 +02:00
Paul Mackerras
8e049ef054 x86: atomic64: Code atomic(64)_read and atomic(64)_set in C not CPP
Occasionally we get bugs where atomic_read or atomic_set are
used on atomic64_t variables or vice versa.  These bugs don't
generate warnings on x86 because atomic_read and atomic_set are
coded as macros rather than C functions, so we don't get any
type-checking on their arguments; similarly for atomic64_read
and atomic64_set in 64-bit kernels.

This converts them to C functions so that the arguments are
type-checked and bugs like this will get caught more easily. It
also converts atomic_cmpxchg and atomic_xchg, and
atomic64_cmpxchg and atomic64_xchg on 64-bit, so we get
type-checking on their arguments too.

Compiling a typical 64-bit x86 config, this generates no new
warnings, and the vmlinux text is 86 bytes smaller.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
LKML-Reference: <alpine.LFD.2.01.0907021653030.3210@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 14:42:39 +02:00
Ingo Molnar
22a26e6663 Merge branch 'amd-iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent 2009-07-03 14:35:02 +02:00
Jaswinder Singh Rajput
c7210e1ff8 x86: Remove unused function lapic_watchdog_ok()
lapic_watchdog_ok() is a global function but no one is using it.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1246554335.2242.29.camel@jaswinder.satnam>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 14:34:31 +02:00
Jaswinder Singh Rajput
23d0cd8e71 x86: Remove unused variable disable_x2apic
setup_nox2apic() is writing 1 to disable_x2apic but no one is reading it.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
LKML-Reference: <1246554239.2242.27.camel@jaswinder.satnam>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 14:34:27 +02:00
Rakib Mullick
d3ac88157c x86, kvm: Fix section mismatches in kvm.c
The function paravirt_ops_setup() has been refering the
variable no_timer_check, which is a __initdata. Thus generates
the following warning. paravirt_ops_setup() function is called
from kvm_guest_init() which is a __init function. So to fix
this we mark paravirt_ops_setup as __init.

The sections-check output that warned us about this was:

   LD      arch/x86/built-in.o
  WARNING: arch/x86/built-in.o(.text+0x166ce): Section mismatch in
  reference from the function paravirt_ops_setup() to the variable
  .init.data:no_timer_check
  The function paravirt_ops_setup() references
  the variable __initdata no_timer_check.
  This is often because paravirt_ops_setup lacks a __initdata
  annotation or the annotation of no_timer_check is wrong.

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Acked-by: Avi Kivity <avi@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <b9df5fa10907012240y356427b8ta4bd07f0efc6a049@mail.gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 14:34:22 +02:00
Mike Galbraith
3fd382cedf x86: Add missing annotation to arch/x86/lib/copy_user_64.S::copy_to_user
While examining symbol generation in perf_counter tools, I
noticed that copy_to_user() had no size in vmlinux's symtab.

Signed-off-by: Mike Galbraith <efault@gmx.de>
Acked-by: Alexander van Heukelum <heukelum@fastmail.fm>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
LKML-Reference: <1246512440.13293.3.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 14:34:17 +02:00
Mathieu Desnoyers
12b9d7ccb8 x86: Fix fixmap page order for FIX_TEXT_POKE0,1
Masami reported:

> Since the fixmap pages are assigned higher address to lower,
> text_poke() has to use it with inverted order (FIX_TEXT_POKE1
> to FIX_TEXT_POKE0).

I prefer to just invert the order of the fixmap declaration.
It's simpler and more straightforward.

Backward fixmaps seems to be used by both x86 32 and 64.

It's really rare but a nasty bug, because it only hurts when
instructions to patch are crossing a page boundary. If this
happens, the fixmap write accesses will spill on the following
fixmap, which may very well crash the system. And this does not
crash the system, it could leave illegal instructions in place.
Thanks Masami for finding this.

It seems to have crept into the 2.6.30-rc series, so this calls
for a -stable inclusion.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: <stable@kernel.org>
LKML-Reference: <20090701213722.GH19926@Krystal>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-07-03 14:34:09 +02:00