tree 88bb3dbdb11e181cc267cb56c3c19e42e3630dbd
parent 8960223d5973b3eaf8cbc1984969bb6c7661e7b9
author Kyle McMartin <kyle@infradead.org> 1230039870 -0500
committer Linus Torvalds <torvalds@linux-foundation.org> 1230080601 -0800

parisc: disable UP-optimized flush_tlb_mm

flush_tlb_mm's "optimized" uniprocessor case of allocating a new
context for userspace is exposing a race where we can suddely return
to a syscall with the protection id and space id out of sync, trapping
on the next userspace access.

Debugged-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Tested-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>