linux/arch
Benjamin Herrenschmidt c478b58135 powerpc/powermac: Fix occasional SMP boot failure
The PowerMac kernel occasionally fails to bring up the secondary CPUs on
SMP, the trigger factor seem to be fairly random and related to location
of code and data.

This appears to be due to the initial loading of the TOC value by the
secondary processor which now happens before we clear HID4:RM_CI (Real
Mode Cache Invalidate). This bit should really be cleared before we do
any load or store other than fetching code.

This fix works based on the assumption that all SMP 64-bit PowerMacs use
variants of the 970, which fortunately is true, by explicitely clearing
that bit, adding an slbia for good measure as RM_CI mode is known to
create bogus ERAT entries.

I also removed some spurrious debug output that was left enabled by
mistake while at it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-01-13 14:48:03 +11:00
..
alpha PCI: alpha: use generic INTx swizzle from PCI core 2009-01-07 11:13:13 -08:00
arm Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-nommu 2009-01-09 14:00:58 -08:00
avr32 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2009-01-09 11:52:14 -08:00
blackfin NOMMU: Make VMAs per MM as for MMU-mode linux 2009-01-08 12:04:47 +00:00
cris Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-01-07 11:31:52 -08:00
frv NOMMU: Make VMAs per MM as for MMU-mode linux 2009-01-08 12:04:47 +00:00
h8300 NOMMU: Make VMAs per MM as for MMU-mode linux 2009-01-08 12:04:47 +00:00
ia64 Merge branch 'cpus4096-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-01-10 06:12:18 -08:00
m32r Merge branch 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-01-03 12:04:39 -08:00
m68k m68k: Fix --build-id breakage for sun3 2009-01-12 20:56:44 +01:00
m68knommu NOMMU: Make VMAs per MM as for MMU-mode linux 2009-01-08 12:04:47 +00:00
mips MIPS: Only write c0_framemask on CPUs which have this register. 2009-01-11 09:57:28 +00:00
mn10300 take init_fs to saner place 2008-12-31 18:07:42 -05:00
parisc parisc: introduce asm/swab.h 2009-01-09 12:46:23 -08:00
powerpc powerpc/powermac: Fix occasional SMP boot failure 2009-01-13 14:48:03 +11:00
s390 [S390] Use unsigned long long for u64 on 64bit. 2009-01-09 12:15:07 +01:00
sh NOMMU: Make VMAs per MM as for MMU-mode linux 2009-01-08 12:04:47 +00:00
sparc Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-01-12 16:28:26 -08:00
um mm: invoke oom-killer from page fault 2009-01-06 15:58:58 -08:00
x86 Revert "cpumask: use work_on_cpu in acpi-cpufreq.c for drv_read and drv_write" 2009-01-12 19:24:23 +01:00
xtensa xtensa: introduce swab.h 2009-01-07 12:22:04 -08:00
.gitignore
Kconfig oprofile: select RING_BUFFER 2008-12-12 09:46:31 +01:00