Nathan Whitehorn 83c01b8cf6 Close a race involving the OEA64 scratchpage. When the scratch page's ...

physical address is changed, there is a brief window during which its PTE
is invalid. Since moea64_set_scratchpage_pa() does not and cannot hold
the page table lock, it was possible for another CPU to insert a new PTE
into the scratch page's PTEG slot during this interval, corrupting both
mappings.

Solve this by creating a new flag, LPTE_LOCKED, such that
moea64_pte_insert will avoid claiming locked PTEG slots even if they
are invalid. This change also incorporates some additional paranoia
added to solve things I thought might be this bug.

Reported by:	linimon

2010-02-24 00:54:37 +00:00

..

clock.c

Remove debugging printf that snuck in here.

2009-10-23 21:44:46 +00:00

copyinout.c

Fix a race in casuword() exposed by csup. casuword() non-atomically read

2009-10-31 17:59:24 +00:00

interrupt.c

Trace interrupts with KTR_INTR.

2008-08-31 23:54:22 +00:00

locore.S

Modularize the Open Firmware client interface to allow run-time switching

2008-12-20 00:33:10 +00:00

machdep.c

Reduce KVA pressure on OEA64 systems running in bridge mode by mapping

2010-02-20 16:23:29 +00:00

mmu_oea64.c

Close a race involving the OEA64 scratchpage. When the scratch page's

2010-02-24 00:54:37 +00:00

mmu_oea.c

Reduce KVA pressure on OEA64 systems running in bridge mode by mapping

2010-02-20 16:23:29 +00:00

mp_cpudep.c

Add some more paranoia to setting HID registers, and update the AIM

2009-10-23 21:36:33 +00:00

nexus.c

Convert PowerPC AIM PCI and nexus busses to standard OFW bus interface. This

2008-10-14 14:54:14 +00:00

ofw_machdep.c

Add a CPU features framework on PowerPC and simplify CPU setup a little

2009-11-28 17:33:19 +00:00

ofwmagic.S

…

platform_chrp.c

Add SMP support on U3-based G5 systems. This does not yet work perfectly:

2009-10-23 03:17:02 +00:00

swtch.S

Unbreak cpu_switch(). The register allocator in my brain is clearly

2009-10-31 20:59:13 +00:00

trap_subr.S

Do not map the trap vectors into the kernel's address space. They are

2009-10-23 14:27:40 +00:00

trap.c

Allow user programs to execute mfpvr instructions. Linux allows this, and

2010-02-22 14:17:23 +00:00

uma_machdep.c

Reduce KVA pressure on OEA64 systems running in bridge mode by mapping

2010-02-20 16:23:29 +00:00

vm_machdep.c

Extract the code that records syscall results in the frame into MD

2009-11-10 11:43:07 +00:00