Nathan Whitehorn 54c562081f Restructure the way the copyin/copyout segment is stored to prevent a ... concurrency bug. Since all SLB/SR entries were invalidated during an exception, a decrementer exception could cause the user segment to be invalidated during a copyin()/copyout() without a thread switch that would cause it to be restored from the PCB, potentially causing the operation to continue on invalid memory. This is now handled by explicit restoration of segment 12 from the PCB on 32-bit systems and a check in the Data Segment Exception handler on 64-bit. While here, cause copyin()/copyout() to check whether the requested user segment is already installed, saving some pipeline flushes, and fix the synchronization primitives around the mtsr and slbmte instructions to prevent accessing stale segments. MFC after: 2 weeks		2010-10-30 23:07:30 +00:00
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aim	Restructure the way the copyin/copyout segment is stored to prevent a	2010-10-30 23:07:30 +00:00
booke	Introduce inheritance into the PowerPC MMU kobj interface.	2010-09-15 00:17:52 +00:00
compile
conf	Add three new drivers for fan control and temperature reading on the	2010-10-15 20:08:16 +00:00
cpufreq	MFppc64:	2010-07-13 05:32:19 +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	Restructure the way the copyin/copyout segment is stored to prevent a	2010-10-30 23:07:30 +00:00
mambo	Don't create spurious /dev entries.	2010-10-25 15:41:12 +00:00
mpc85xx	Restructure how reset and poweroff are handled on PowerPC systems, since	2010-08-31 15:27:46 +00:00
ofw	Map the Open Firmware framebuffer console with write combining turned on,	2010-10-01 19:02:31 +00:00
powermac	Add three new drivers for fan control and temperature reading on the	2010-10-15 20:08:16 +00:00
powerpc	Restructure the way the copyin/copyout segment is stored to prevent a	2010-10-30 23:07:30 +00:00
psim	Remove the unneeded header <machine/intr.h>.	2010-07-02 02:17:39 +00:00