Nathan Whitehorn e69dff491d Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) ... instead of a PCPU field for curthread. This averts a race on SMP systems with a high interrupt rate where the thread looking up the value of curthread could be preempted and migrated between obtaining the PCPU pointer and reading the value of pc_curthread, resulting in curthread being observed to be the current thread on the thread's original CPU. This played merry havoc with the system, in particular with mutexes. Many thanks to jhb for helping me work this one out. Note that Book-E is in principle susceptible to the same problem, but has not been modified yet due to lack of Book-E hardware. MFC after: 2 weeks		2011-06-23 22:21:28 +00:00
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aim	Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64)	2011-06-23 22:21:28 +00:00
booke	Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64)	2011-06-23 22:21:28 +00:00
compile	Don't need the .keep_me files. Obrien and I committed past each other.	2001-07-01 23:35:44 +00:00
conf	Follow up r222980 on PowerPC: add sound(4) and common device drivers	2011-06-11 12:34:08 +00:00
cpufreq	Remove unused variables. Spotted by a cppcheck	2011-01-06 20:19:01 +00:00
fpu	The NetBSD Foundation has granted permission to remove clause 3 and 4 from	2010-03-03 17:07:02 +00:00
include	Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64)	2011-06-23 22:21:28 +00:00
mambo	Fix the interrupt code, broken 7 months ago. The interrupt framework	2011-01-29 20:58:38 +00:00
mpc85xx	MFC	2011-05-29 00:59:38 +00:00
ofw	Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64)	2011-06-23 22:21:28 +00:00
powermac	Add new fan controller driver for the G4 MDD PowerMac. Submitted and tested	2011-06-04 15:17:35 +00:00
powerpc	Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64)	2011-06-23 22:21:28 +00:00
ps3	Use atomic operations to mask and unmask IRQs. This prevents a problem	2011-06-23 04:35:45 +00:00
psim	Fix the interrupt code, broken 7 months ago. The interrupt framework	2011-01-29 20:58:38 +00:00