Alan Cox e1de0706a0 In a few places, like the implementation of ptrace(), a thread may call ... upon pmap_enter() to create a mapping within a different address space, i.e., not the thread's own address space. On i386, this entails the creation of a temporary mapping to the affected page table page (PTP). In general, pmap_enter() will read from this PTP, allocate a PV entry, and write to this PTP. The trouble comes when the system is short of memory. In order to allocate a new PV entry, an older PV entry has to be reclaimed. Reclaiming a PV entry involves destroying a mapping, which requires access to the affected PTP. Thus, the PTP mapped at the beginning of pmap_enter() is no longer mapped at the end of pmap_enter(), which leads to pmap_enter() modifying the wrong PTP. To address this problem, pmap_pv_reclaim() is changed to use an alternate method of mapping PTPs. Update a related comment. Reported by: pho Diagnosed by: kib MFC after: 5 days		2012-10-08 16:57:05 +00:00
..
amd64	- Re-shuffle the <machine/pc/bios.h> headers to move all kernel-specific	2012-09-28 11:59:32 +00:00
arm	Loop reading the RTC registers until the same values are obtained	2012-10-07 20:36:46 +00:00
boot	Comment and Copyright fixes/updates.	2012-10-07 15:37:30 +00:00
bsm
cam	ata_da: set disk::d_ident from serial number	2012-10-06 21:42:07 +00:00
cddl	zvol: set mediasize in geom provider right upon its creation	2012-10-06 19:57:27 +00:00
compat	Fix the mis-handling of the VV_TEXT on the nullfs vnodes.	2012-09-28 11:25:02 +00:00
conf	Improve the check for p4 opened files.	2012-09-22 07:44:36 +00:00
contrib	A step in resolving mess with byte ordering for AF_INET. After this change:	2012-10-06 10:02:11 +00:00
crypto
ddb
dev	Rework device detach. While here, move driver lock/callout	2012-10-08 07:33:43 +00:00
fs	Fix the mis-handling of the VV_TEXT on the nullfs vnodes.	2012-09-28 11:25:02 +00:00
gdb
geom	Make graid command line a bit more friendly by allowing volume name or	2012-10-07 19:30:16 +00:00
gnu/fs	Add VFCF_READONLY flag that indicates ntfs and xfs file systems are	2012-09-12 03:42:52 +00:00
i386	In a few places, like the implementation of ptrace(), a thread may call	2012-10-08 16:57:05 +00:00
ia64	Eliminate a stale comment. It describes another use case for the pmap in	2012-09-28 05:30:59 +00:00
isa
kern	cngetc: use cpu_spinwait to ease the cncheckc loop a tiny bit	2012-10-06 19:50:23 +00:00
kgssapi
libkern	s/ is is / is /g	2012-09-14 22:00:03 +00:00
mips	Optimize the TLB invalidations performed by pmap_protect(). Use the new	2012-10-07 18:07:45 +00:00
modules	Restrict the module to varied environments.	2012-10-08 14:08:13 +00:00
net	A step in resolving mess with byte ordering for AF_INET. After this change:	2012-10-06 10:02:11 +00:00
net80211	Migrate the power-save functions to be overridable VAP methods.	2012-10-02 17:45:19 +00:00
netatalk
netgraph	After r241245 it appeared that in_delayed_cksum(), which still expects	2012-10-08 08:03:58 +00:00
netinet	After r241245 it appeared that in_delayed_cksum(), which still expects	2012-10-08 08:03:58 +00:00
netinet6	ip6_ipsec_output: fix a typo in r241344	2012-10-08 13:45:40 +00:00
netipsec	Add missing break	2012-09-18 08:00:43 +00:00
netipx
netnatm
netncp
netpfil	After r241245 it appeared that in_delayed_cksum(), which still expects	2012-10-08 08:03:58 +00:00
netsmb	Change a duplicated check to clarify that we really want to set a	2012-07-10 21:02:59 +00:00
nfs	- Typo fix	2012-08-16 19:22:34 +00:00
nfsclient	Do not leave invalid pages in the object after the short read for a	2012-08-14 11:45:47 +00:00
nfsserver	Fix the mis-handling of the VV_TEXT on the nullfs vnodes.	2012-09-28 11:25:02 +00:00
nlm	Fix grammar.	2012-08-16 13:01:56 +00:00
ofed	The drbr(9) API appeared to be so unclear, that most drivers in	2012-09-28 18:28:27 +00:00
opencrypto
pc98	MFi386: revision 237445	2012-09-23 09:13:57 +00:00
pci
powerpc	Eliminate a stale comment. It describes another use case for the pmap in	2012-09-28 05:30:59 +00:00
rpc	rpc: convert all uid and gid variables to u_int.	2012-10-04 04:15:18 +00:00
security
sparc64	Eliminate a stale comment. It describes another use case for the pmap in	2012-09-28 05:30:59 +00:00
sys	A step in resolving mess with byte ordering for AF_INET. After this change:	2012-10-06 10:02:11 +00:00
teken
tools
ufs	Fix up kernel sources to be ready for a 64-bit ino_t.	2012-09-27 23:30:49 +00:00
vm	Tidy up a bit:	2012-10-03 05:06:45 +00:00
x86	Add missing header needed by free(9).	2012-09-30 15:42:20 +00:00
xdr
xen
Makefile