freebsd-nq/sys/ia64
Marcel Moolenaar 229d894543 In pmap_set_pte(), make sure to enforce ordering by inserting a memory
fence. Under system load, the CPU has been found to change the order
by which the stores are made visible. When the tag is made visible
before the other TLB values, other CPUs may use the invalid TLB values
and do bad things.

While here (i.e. not a fix) don't return errors from pmap_remove_vhpt()
to callers of pmap_remove_pte(). Those callers don't check the return
value and as such don't do what is needed to keep a consistent state.
More importantly, pmap_remove_vhpt() can't really have an error without
it indicating something unintended. Using KASSERT is therefore better.

PR:		182999, 183227
2014-01-20 18:37:35 +00:00
..
acpica
conf Enable vt. This brings VGA-based console and terminal support to 2014-01-19 04:45:52 +00:00
disasm
ia32 Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use 2013-09-09 18:11:59 +00:00
ia64 In pmap_set_pte(), make sure to enforce ordering by inserting a memory 2014-01-20 18:37:35 +00:00
include Implement atomic_swap_<type>. 2014-01-01 22:51:19 +00:00
isa
pci