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freebsd-dev/sys/powerpc/aim
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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
..
clock.c After some off-list discussion, revert a number of changes to the 2010-11-22 19:32:54 +00:00
copyinout.c Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) 2011-06-23 22:21:28 +00:00
interrupt.c Remove some dead code: unnecessary isyncs and memory sorting, which are 2011-06-02 14:15:44 +00:00
locore32.S Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) 2011-06-23 22:21:28 +00:00
locore64.S Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) 2011-06-23 22:21:28 +00:00
locore.S MFppc64: 2010-07-13 05:32:19 +00:00
machdep.c Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) 2011-06-23 22:21:28 +00:00
mmu_oea64.c Fix merge typo. 2011-06-23 09:46:12 +00:00
mmu_oea64.h Add an abstraction layer to the 64-bit AIM MMU's page table manipulation 2010-12-04 02:42:52 +00:00
mmu_oea.c MFC 2011-06-03 17:09:15 +00:00
moea64_if.m Add an abstraction layer to the 64-bit AIM MMU's page table manipulation 2010-12-04 02:42:52 +00:00
moea64_native.c Remove some dead code: unnecessary isyncs and memory sorting, which are 2011-06-02 14:15:44 +00:00
mp_cpudep.c Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) 2011-06-23 22:21:28 +00:00
nexus.c Remove unused variables. Spotted by a cppcheck 2011-01-06 20:19:01 +00:00
slb.c The POWER7 has only 32 SLB slots instead of 64, like other supported 2011-06-02 14:25:52 +00:00
swtch32.S Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) 2011-06-23 22:21:28 +00:00
swtch64.S Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) 2011-06-23 22:21:28 +00:00
trap_subr32.S Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) 2011-06-23 22:21:28 +00:00
trap_subr64.S Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) 2011-06-23 22:21:28 +00:00
trap.c Use the ABI-mandated thread pointer register (r2 for ppc32, r13 for ppc64) 2011-06-23 22:21:28 +00:00
uma_machdep.c
vm_machdep.c For architectures not using direct map , and requiring real KVA page for 2011-01-18 21:57:02 +00:00