01 Feb, 2010
2 commits
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Here are the powerpc bits to remove TIF_ABI_PENDING now that
set_personality() is called at the appropriate place in exec.Signed-off-by: Andreas Schwab
Signed-off-by: Benjamin Herrenschmidt -
desc->affinity doesn't exit in that case. Let's use a macro for
the UP variant of get_irq_server(), it's the easiest way, avoids
evaluating arguments.Signed-off-by: Benjamin Herrenschmidt
29 Jan, 2010
5 commits
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Some of the newer 4xx pci cores need an explicit bit set to send
type 1 transactions instead of just comparing the bus numbers.This patch enables type 1 transations for pcix nodes, thus enabling
devices behind PCI bridges.Signed-off-by: Stef van Os
Signed-off-by: Benjamin Herrenschmidt -
Add missing call to pci_fixup_device(pci_fixup_early, ...) when
building the pci_dev from scratch off the Open Firmware device-treeSigned-off-by: Benjamin Herrenschmidt
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Add missing hookup to existing pci_slot when building the pci_dev from
scratch off the Open Firmware device-treeSigned-off-by: Benjamin Herrenschmidt
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We are missing these when building the pci_dev from scratch off
the Open Firmware device-treeSigned-off-by: Benjamin Herrenschmidt
Acked-by: Jesse Barnes
25 Jan, 2010
1 commit
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Embedded PowerPC KVM has an exit timing implementation to track and evaluate
how much time was spent in which exit path.For Book3S, we don't implement it. So let's not expose it as a config option
either.Signed-off-by: Alexander Graf
Signed-off-by: Avi Kivity
15 Jan, 2010
13 commits
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Move the defintion and lock helper routines for the cpu hotplug driver
lock from pseries to powerpc code to avoid build breaks for platforms
other than pseries that use cpu hotplug.Signed-off-by: Nathan Fontenot
Acked-by: Michael Ellerman
Signed-off-by: Benjamin Herrenschmidt -
It looks like the previous patch sent out to move RTAS and
other items from /proc/ppc64 to /proc/powerpc missed a few
files needed for RAS and DLPAR functionality.Original Patch here:
http://lists.ozlabs.org/pipermail/linuxppc-dev/2009-September/076096.htmlThis patch updates the remaining files to be created under /proc/powerpc.
Signed-off-by: Nathan Fontenot
Signed-off-by: Benjamin Herrenschmidt -
The newly added fixup for buggy dcbX insn's has
a bug that always trigger a kernel TLB walk so a user space
dcbX insn will cause a Kernel Machine Check if it hits DTLB error.Signed-off-by: Joakim Tjernlund
Signed-off-by: Benjamin Herrenschmidt -
We noticed that recent kernels didn't boot on our 1GHz Canyonlands 460EX
boards anymore. As it seems, patch 8d165db1 [powerpc: Improve
decrementer accuracy] introduced this problem. The routine div_sc()
overflows with shift = 32 resulting in this incorrect setup:time_init: decrementer frequency = 1000.000012 MHz
time_init: processor frequency = 1000.000012 MHz
clocksource: timebase mult[400000] shift[22] registered
clockevent: decrementer mult[33] shift[32] cpu[0]This patch now introduces a local div_dc64() version of this function
so that this overflow doesn't happen anymore.Signed-off-by: Stefan Roese
Cc: Benjamin Herrenschmidt
Cc: Detlev Zundel
Signed-off-by: Benjamin Herrenschmidt -
get_viotape_info() declares a vio_waitevent on the stack, which
contains a completion, but never initialises the completion.I have no idea how this ever worked, and on recent kernels it causes
an oops in handle_tape_event() when we access the non-initialised
completion.Signed-off-by: Michael Ellerman
Acked-by: Stephen Rothwell
Signed-off-by: Benjamin Herrenschmidt -
Make sure compiler won't do weird things with limits. E.g. fetching
them twice may return 2 different values after writable limits are
implemented.I.e. either use rlimit helpers added in
3e10e716abf3c71bdb5d86b8f507f9e72236c9cd
or ACCESS_ONCE if not applicable.Signed-off-by: Jiri Slaby
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: linuxppc-dev@ozlabs.org
Signed-off-by: Benjamin Herrenschmidt -
pcibus_to_node can return -1 if we cannot determine which node a pci bus
is on. If passed -1, cpumask_of_node will negatively index the lookup array
and pull in random data:# cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus
00000000,00000003,00000000,00000000
# cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist
64-65Change cpumask_of_node to check for -1 and return cpu_all_mask in this
case:# cat /sys/devices/pci0000:00/0000:00:01.0/local_cpus
ffffffff,ffffffff,ffffffff,ffffffff
# cat /sys/devices/pci0000:00/0000:00:01.0/local_cpulist
0-127Signed-off-by: Anton Blanchard
Signed-off-by: Benjamin Herrenschmidt -
cc1: warnings being treated as errors
arch/powerpc/platforms/pseries/dlpar.c: In function 'dlpar_attach_node':
arch/powerpc/platforms/pseries/dlpar.c:239: error: unused variable 'ent'
arch/powerpc/platforms/pseries/dlpar.c: In function 'dlpar_detach_node':
arch/powerpc/platforms/pseries/dlpar.c:271: error: unused variable 'prop'
arch/powerpc/platforms/pseries/dlpar.c:270: error: unused variable 'parent'
make[3]: *** [arch/powerpc/platforms/pseries/dlpar.o] Error 1Signed-off-by: FUJITA Tomonori
Signed-off-by: Benjamin Herrenschmidt -
Commit 57b150cce8e004ddd36330490a68bfb59b7271e9 (irq: only update affinity if
->set_affinity() is sucessfull) broke xics irq affinity.We need to use the cpumask passed in, instead of accessing ->affinity directly.
Signed-off-by: Anton Blanchard
Signed-off-by: Benjamin Herrenschmidt -
It seems there is a thinko in the TLB invalidation code that makes the
tlbie in the loop executed just once. The intended check was probably
'gt', not 'lt'.Signed-off-by: Anton Vorontsov
Signed-off-by: Benjamin Herrenschmidt -
Various kernel asm modifies SRR0/SRR1 just before executing
a rfi. If such code crosses a page boundary you risk a TLB miss
which will clobber SRR0/SRR1. Avoid this by always pinning
kernel instruction TLB space.Signed-off-by: Joakim Tjernlund
Signed-off-by: Benjamin Herrenschmidt
14 Jan, 2010
1 commit
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Commit ac4c2a3bbe5db5fc570b1d0ee1e474db7cb22585 broke the build
of all powerpc boot wrappers.It attempts to add an include of autoconf.h but used the wrong
path for it. It also adds -D__KERNEL__ to our boot wrapper, both
things that we pretty much didn't do on purpose so far.We want our boot wrapper to remain independent enough of the kernel
for various reasons, one of them being that you can "wrap" an existing
kernel at distro install time which allows to ship one kernel image
and a set of boot wrappers for different platforms, the wrappers
don't have to be built out of the same kernel build tree.It's also incorrect to do what the patch does in our boot environment
since we may not have a proper alignment exception handler which means
we may not be able to fixup the few cases where an unaligned access will
need SW emulation (depends on the core variant, could be when crossing
page or segment boundaries for example).This patch fixes it by putting the old code back in and using the
new "fancy" variant only when CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
is set, which happens not to be set on powerpc since we don't include
autoconf.h. It also reverts the changes to our boot wrapper Makefile.This means that x86 should, afaik, keep the optimisations since its
boot wrapper does include autoconf.h and define __KERNEL__ (though I
doubt they make that much different outside of slow embedded processors).Signed-off-by: Benjamin Herrenschmidt
Signed-off-by: Linus Torvalds
12 Jan, 2010
1 commit
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JFFS2 uses lesser compression ratio and inflate always ends up in "copy
direct from output" case.This patch tries to optimize the direct copy procedure. Uses
get_unaligned() but only in one place.The copy loop just above this one can also use this optimization, but I
havn't done so as I have not tested if it is a win there too.On my MPC8321 this is about 17% faster on my JFFS2 root FS than the
original.[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Joakim Tjernlund
Cc: Roel Kluin
Cc: Richard Purdie
Cc: David Woodhouse
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Jan, 2010
1 commit
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Signed-off-by: Kumar Gala
04 Jan, 2010
2 commits
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Update the 40x defconfigs for 2.6.33
Signed-off-by: Josh Boyer
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Update the 44x defconfig files for 2.6.33
Signed-off-by: Josh Boyer
31 Dec, 2009
3 commits
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mkuboot.sh provides a basic wrapper for the 'mkimage' utility. Using
mkuboot.sh provides clearer error reporting and allows a toolchain to
use its own 'mkimage' executable specified by ${CROSS_COMPILE}mkimage.
Additionally, this brings PowerPC in line with other architectures
which already call mkimage via mkuboot.sh.Signed-off-by: Peter Tyser
Signed-off-by: Grant Likely -
Signed-off-by: Grant Likely
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI/cardbus: Add a fixup hook and fix powerpc
PCI: change PCI nomenclature in drivers/pci/ (non-comment changes)
PCI: change PCI nomenclature in drivers/pci/ (comment changes)
PCI: fix section mismatch on update_res()
PCI: add Intel 82599 Virtual Function specific reset method
PCI: add Intel USB specific reset method
PCI: support device-specific reset methods
PCI: Handle case when no pci device can provide cache line size hint
PCI/PM: Propagate wake-up enable for PCIe devices too
vgaarbiter: fix a typo in the vgaarbiter Documentation
27 Dec, 2009
1 commit
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We were shifting the Ks/Kp/N bits one bit too far on mtsrin. It took
me some time to figure that out, so I also put in some debugging and a
comment explaining the conversion.This fixes current OpenBIOS boot on PPC64 KVM.
Signed-off-by: Alexander Graf
Signed-off-by: Avi Kivity
21 Dec, 2009
4 commits
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Fix the following build failures:
arch/powerpc/platforms/embedded6xx/flipper-pic.c: In function 'flipper_pic_map':
arch/powerpc/platforms/embedded6xx/flipper-pic.c:105: error: implicit declaration of function 'get_irq_desc'arch/powerpc/platforms/embedded6xx/hlwd-pic.c: In function 'hlwd_pic_map':
arch/powerpc/platforms/embedded6xx/hlwd-pic.c:98: error: implicit declaration of function 'get_irq_desc'These failures are caused by the changes introduced in commit
"powerpc: Remove get_irq_desc()". The reason these drivers were not
updated is that they weren't merged yet.Signed-off-by: Albert Herranz
Signed-off-by: Benjamin Herrenschmidt -
Fix the following build failures:
arch/powerpc/platforms/embedded6xx/hlwd-pic.c: In function 'hlwd_pic_irq_cascade':
arch/powerpc/platforms/embedded6xx/hlwd-pic.c:135: error: passing argument 1 of 'spin_lock' from incompatible pointer type
arch/powerpc/platforms/embedded6xx/hlwd-pic.c:137: error: passing argument 1 of 'spin_unlock' from incompatible pointer type
arch/powerpc/platforms/embedded6xx/hlwd-pic.c:145: error: passing argument 1 of 'spin_lock' from incompatible pointer type
arch/powerpc/platforms/embedded6xx/hlwd-pic.c:149: error: passing argument 1 of 'spin_unlock' from incompatible pointer typeThese failures are caused by the changes introduced in commit
"genirq: Convert irq_desc.lock to raw_spinlock". The reason this driver
was not updated is that it wasn't merged yet.Signed-off-by: Albert Herranz
Signed-off-by: Benjamin Herrenschmidt
18 Dec, 2009
6 commits
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The retry logic in ug_putc() is broken.
If the TX fifo is not ready and the counter runs out it will have a
value of -1 and no transfer should be attempted. Also, a counter
with a value of 0 means that the TX fifo got ready in the last try
and the transfer should be attempted.Reported-by: "Juha Leppanen"
Signed-off-by: "Juha Leppanen"
Signed-off-by: Albert Herranz
Signed-off-by: Benjamin Herrenschmidt -
Since commit 57b150cce8e004ddd36330490a68bfb59b7271e9, desc->affinity
of an irq is changed after calling desc->chip->set_affinity.
Therefore we need to fix the irq_choose_cpu() not to depend on the
desc->affinity for new mask.Signed-off-by: Jiajun Wu
Signed-off-by: Li Yang
Signed-off-by: Benjamin Herrenschmidt -
Commit d28513bc7f675d28b479db666d572e078ecf182d ("Fix bug in pagetable
cache cleanup with CONFIG_PPC_SUBPAGE_PROT"), itself a fix for
breakage caused by an earlier clean up patch of mine, contains a
stupid bug. I changed the parameters of the subpage_protection()
function, but failed to update one of the callers.This patch fixes it, and replaces a void * with a typed pointer so
that the compiler will warn on such an error in future.Signed-off-by: David Gibson
Signed-off-by: Benjamin Herrenschmidt -
The _ONSTACK variant should be used for on-stack completion,
otherwise it will break lockdep.Signed-off-by: Yong Zhang
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: linuxppc-dev@ozlabs.org
Signed-off-by: Benjamin Herrenschmidt -
On machines using the Apple U4 bridge (AKA IBM CPC945) PCIe interface such
as the latest generation G5 machines x16 slot or the x16 slot of the
PowerStation, MSIs are currently broken (and will oops when enabling).This fixes the oops and implements proper support for those. Instead of
using the PCIe HT bridge conversion, on such slots we need to use
a bunch of magic registers in the bridge as the MSI target, encoding
the interrupt number in the low bits of the address itselfSigned-off-by: Benjamin Herrenschmidt
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This patch fixes the handling of VSX alignment faults in little-endian
mode (the current code assumes the processor is in big-endian mode).The patch also makes the handlers clear the top 8 bytes of the register
when handling an 8 byte VSX load.This is based on 2.6.32.
Signed-off-by: Neil Campbell
Cc:
Acked-by: Michael Neuling
Signed-off-by: Benjamin Herrenschmidt
