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  1. 09 Mar, 2010 5 commits
    • Mark Nelson's avatar
      powerpc/pseries: Pass CPPR value to H_XIRR hcall · f09b7b2a
      Mark Nelson authored 
      Now that we properly keep track of the CPPR value (since
49bd3647, "powerpc/pseries: Track previous
CPPR values to correctly EOI interrupts") we can pass it to the
H_XIRR hcall.

This is needed because the Partition Adjunct Option of new versions of
pHyp extend the H_XIRR hcall to include the CPPR as an input parameter.
Earlier versions not supporting this option just disregard the extra
input parameter, so this doesn't cause any problems for existing systems.

The Partition Adjunct Option is required for future systems that will
support SR-IOV capable devices.
Signed-off-by: default avatarMark Nelson <markn@au1.ibm.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      f09b7b2a
    • Dave Kleikamp's avatar
      powerpc/booke: Fix a couple typos in the advanced ptrace code · 856f70a3
      Dave Kleikamp authored 
      powerpc/booke: Fix a couple typos in the advanced ptrace code

Found and fixed a couple typos in the advanced ptrace patches.
(These patches are currently in benh's next tree.)
Signed-off-by: default avatarDave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev list <Linuxppc-dev@ozlabs.org>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      856f70a3
    • Adam Lackorzynski's avatar
      powerpc: Fix SMP build with disabled CPU hotplugging. · 5b72d74c
      Adam Lackorzynski authored 
      Compiling 2.6.33 with SMP enabled and HOTPLUG_CPU disabled gives me the
following link errors:

  LD      init/built-in.o
  LD      .tmp_vmlinux1
arch/powerpc/platforms/built-in.o: In function `.smp_xics_setup_cpu':
smp.c:(.devinit.text+0x88): undefined reference to `.set_cpu_current_state'
smp.c:(.devinit.text+0x94): undefined reference to `.set_default_offline_state'
arch/powerpc/platforms/built-in.o: In function `.smp_pSeries_kick_cpu':
smp.c:(.devinit.text+0x13c): undefined reference to `.set_preferred_offline_state'
smp.c:(.devinit.text+0x148): undefined reference to `.get_cpu_current_state'
smp.c:(.devinit.text+0x1a8): undefined reference to `.get_cpu_current_state'
make: *** [.tmp_vmlinux1] Error 1

The following change fixes that for me and seems to work as expected.
Signed-off-by: default avatarAdam Lackorzynski <adam@os.inf.tu-dresden.de>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      5b72d74c
    • Michael Ellerman's avatar
      powerpc: Dynamically allocate pacas · 1426d5a3
      Michael Ellerman authored 
      On 64-bit kernels we currently have a 512 byte struct paca_struct for
each cpu (usually just called "the paca"). Currently they are statically
allocated, which means a kernel built for a large number of cpus will
waste a lot of space if it's booted on a machine with few cpus.

We can avoid that by only allocating the number of pacas we need at
boot. However this is complicated by the fact that we need to access
the paca before we know how many cpus there are in the system.

The solution is to dynamically allocate enough space for NR_CPUS pacas,
but then later in boot when we know how many cpus we have, we free any
unused pacas.
Signed-off-by: default avatarMichael Ellerman <michael@ellerman.id.au>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
      1426d5a3
    • Benjamin Herrenschmidt's avatar
      Merge commit 'kumar/next' into merge · 59603b9a
      Benjamin Herrenschmidt authored
      59603b9a
  3. 08 Mar, 2010 35 commits