linux-toradex.git/arch/ppc, branch v2.6.18.3

[PATCH] POWERPC: Make alignment exception always check exception table

2006-11-19T03:27:58+00:00

The alignment exception used to only check the exception table for
-EFAULT, not for other errors. That opens an oops window if we can
coerce the kernel into getting an alignment exception for other reasons
in what would normally be a user-protected accessor, which can be done
via some of the futex ops. This fixes it by always checking the
exception tables.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras 
Signed-off-by: Chris Wright

[POWERPC] update prep_defconfig

2006-09-13T08:30:08+00:00

Update PReP defconfig, disable some drivers for hardware that is not
used on those systems; enable SL82C105 IDE driver for Powerstack.

Signed-off-by: Olaf Hering 
Signed-off-by: Paul Mackerras

Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

2006-08-31T04:44:06+00:00

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Fix return value from memcpy
  [POWERPC] iseries: Define insw et al. so libata/ide will compile
  [POWERPC] Fix irq enable/disable in smp_generic_take_timebase
  [POWERPC] Fix problem with time not advancing on 32-bit platforms
  [POWERPC] Restore copyright notice in arch/powerpc/kernel/fpu.S
  [POWERPC] Fix up ibm_architecture_vec definition
  [POWERPC] Make OF irq map code detect more error cases
  [POWERPC] Support for "weird" MPICs and fixup mpc7448_hpc2
  [POWERPC] Fix MPIC sense codes in documentation
  [POWERPC] Fix performance regression in IRQ radix tree locking
  [POWERPC] Add mpc7448hpc2 device tree source file
  [POWERPC] Add MPC8349E MDS device tree source file to arch/powerpc/boot/dts
  [POWERPC] modify mpc83xx platforms to use new IRQ layer
  [POWERPC] Adapt ipic driver to new host_ops interface, add set_irq_type to set IRQ sense
  [POWERPC] back up old school ipic.[hc] to arch/ppc
  [POWERPC] Use mpc8641hpcn PIC base address from dev tree.
  [POWERPC] Allow MPC8641 HPCN to build with CONFIG_PCI disabled too.
  [POWERPC] Fix powerpc 44x_mmu build
  [POWERPC] Remove flush_dcache_all export

[POWERPC] Fix irq enable/disable in smp_generic_take_timebase

2006-08-30T06:10:47+00:00

Eran Ben-Avi  pointed out that the arch/ppc version
of smp_generic_take_timebase disables interrupts on entry but exits without
restoring them.  However, both it and the arch/powerpc version have another
problem, which is that they use local_irq_disable/enable rather than
local_irq_save/restore, and they are called with interrupts disabled.

This fixes both problems; it changes a return to a break in the arch/ppc
version, and changes both versions to use local_irq_save/restore.

Signed-off-by: Paul Mackerras

[POWERPC] back up old school ipic.[hc] to arch/ppc

2006-08-30T00:34:33+00:00

Keep from breaking 83xx arch/ppc build.  Back up old school arch/powerpc/sysdev/ipic.[hc] to arch/ppc/syslib.

Signed-off-by: Kim Phillips 
Signed-off-by: Paul Mackerras

[PATCH] ppc32: board-specific part of fs_enet update

2006-08-19T21:44:31+00:00

This contains board-specific portion to respect driver changes (for 8272ads ,
885ads and 866ads).  Altered platform_data structures as well as initial setup
routines relevant to fs_enet.

Changes to the mpc8560ads ppc/ code are also introduced, but mainly as
reference, since the entire board support is going to appear in arch/powerpc.

Signed-off-by: Vitaly Bordug 
Signed-off-by: Andrew Morton 
Signed-off-by: Jeff Garzik

[PATCH] vDSO hash-style fix

2006-07-31T20:28:43+00:00

The latest toolchains can produce a new ELF section in DSOs and
dynamically-linked executables.  The new section ".gnu.hash" replaces
".hash", and allows for more efficient runtime symbol lookups by the
dynamic linker.  The new ld option --hash-style={sysv|gnu|both} controls
whether to produce the old ".hash", the new ".gnu.hash", or both.  In some
new systems such as Fedora Core 6, gcc by default passes --hash-style=gnu
to the linker, so that a standard invocation of "gcc -shared" results in
producing a DSO with only ".gnu.hash".  The new ".gnu.hash" sections need
to be dealt with the same way as ".hash" sections in all respects; only the
dynamic linker cares about their contents.  To work with older dynamic
linkers (i.e.  preexisting releases of glibc), a binary must have the old
".hash" section.  The --hash-style=both option produces binaries that a new
dynamic linker can use more efficiently, but an old dynamic linker can
still handle.

The new section runs afoul of the custom linker scripts used to build vDSO
images for the kernel.  On ia64, the failure mode for this is a boot-time
panic because the vDSO's PT_IA_64_UNWIND segment winds up ill-formed.

This patch addresses the problem in two ways.

First, it mentions ".gnu.hash" in all the linker scripts alongside ".hash".
 This produces correct vDSO images with --hash-style=sysv (or old tools),
with --hash-style=gnu, or with --hash-style=both.

Second, it passes the --hash-style=sysv option when building the vDSO
images, so that ".gnu.hash" is not actually produced.  This is the most
conservative choice for compatibility with any old userland.  There is some
concern that some ancient glibc builds (though not any known old production
system) might choke on --hash-style=both binaries.  The optimizations
provided by the new style of hash section do not really matter for a DSO
with a tiny number of symbols, as the vDSO has.  If someone wants to use
=gnu or =both for their vDSO builds and worry less about that
compatibility, just change the option and the linker script changes will
make any choice work fine.

Signed-off-by: Roland McGrath 
Cc: "Luck, Tony" 
Cc: Kyle McMartin 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Cc: Jeff Dike 
Cc: Andi Kleen 
Cc: Sam Ravnborg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] tty: Remove include of screen_info.h from tty.h

2006-07-10T20:24:16+00:00

screen_info.h doesn't have anything to do with the tty layer and shouldn't be
included by tty.h.  This patches removes the include and modifies all users to
directly include screen_info.h.  struct screen_info is mainly used to
communicate with the console drivers in drivers/video/console.  Note that this
patch touches every arch and I have no way of testing it.  If there is a
mistake the worst thing that will happen is a compile error.

[akpm@osdl.org: fix arm build]
[akpm@osdl.org: fix alpha build]
Signed-off-by: Jon Smirl 
Signed-off-by: Antonino Daplas 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild

2006-07-04T04:26:12+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild:
  kbuild: introduce utsrelease.h
  kbuild: explicit turn off gcc stack-protector

[POWERPC] Actually copy over i8259.c to arch/ppc/syslib this time

2006-07-03T21:31:37+00:00

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras