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b8b08befd0
freebsd-skq/sys
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Grzegorz Bernacki b8b08befd0 Switch to AP[2:1] access permissions model. Store "referenced" 
bit in PTE.

Enable Access Flag in CPU control. With AF enabled each valid mapping
needs to have referenced bit in PTE set in order to be able to cache
it in the TLB.

AP[0] bit is to be used as reference flag.
All access permissions are encoded by AP[2:1] wherein AP[1] is in fact
"user enable" and AP[2](APX) is "write disable".

All mappings are always set to be valid. Reference emulation is performed
by setting/clearing reference flag in PTE.

md.pvh_attrs are no longer necessary however pv_flags are still being used
for now.

Marking vm_page as "dirty" or "referenced" is being performed on:
- page or flag fault servicing in pmap_fault_fixup(), basing on the fault
  type
- vm_fault servicing in pmap_enter() according to the desired protections
  and faulty access type
Redundant page marking has been removed as on ARM we know exactly when the
particular page is referenced or is going to be written.

Submitted by:	Zbigniew Bodek <zbb@semihalf.com>
Sponsored by:	The FreeBSD Foundation, Semihalf
2013-05-23 12:07:41 +00:00
..
amd64 o Relax locking assertions for vm_page_find_least() 2013-05-21 20:38:19 +00:00
arm Switch to AP[2:1] access permissions model. Store "referenced" 2013-05-23 12:07:41 +00:00
boot Correct the spelling of "okay". 2013-05-18 12:54:37 +00:00
bsm Implement chflagsat(2) system call, similar to fchmodat(2), but operates on 2013-03-21 22:59:01 +00:00
cam Added output of device QUIRKS for CAM and AHCI devices during boot. 2013-05-18 23:36:21 +00:00
cddl Bring back part of r249367 by adding DTrace's temporal option, which allows 2013-05-12 16:26:33 +00:00
compat Regenerate. 2013-05-21 11:41:08 +00:00
conf Add basic support for FDT to i386 & amd64. This change includes: 2013-05-21 03:05:49 +00:00
contrib Merge ACPICA 20130517. 2013-05-20 23:52:49 +00:00
crypto When porting XTS-related code from OpenBSD I forgot to update copyright (only 2013-02-20 22:59:53 +00:00
ddb
dev Correct panic on detach of Xen PV network interfaces. 2013-05-22 17:13:03 +00:00
fs Do not leak the NULLV_NOUNLOCK flag from the nullfs_unlink_lowervp(), 2013-05-21 11:31:56 +00:00
gdb
geom Remove an extra semicolon from the DOT language output. 2013-05-21 18:40:54 +00:00
gnu/fs/reiserfs Garbage collect XFS bits which are now already completely disconnected 2013-03-02 15:33:54 +00:00
i386 o Relax locking assertions for vm_page_find_least() 2013-05-21 20:38:19 +00:00
ia64 o Relax locking assertions for vm_page_find_least() 2013-05-21 20:38:19 +00:00
isa
kern Increase the (arbitrary) limit for the number of packets per tick 2013-05-22 16:32:18 +00:00
kgssapi Isilon reported that sec=krb5p NFS mounts had a problem when m_len == 0 2013-05-01 22:07:55 +00:00
libkern Attempt to mitigate poor initialization of arc4 by one-shot 2013-04-19 00:30:52 +00:00
mips o Relax locking assertions for vm_page_find_least() 2013-05-21 20:38:19 +00:00
modules Merge ACPICA 20130517. 2013-05-20 23:52:49 +00:00
net Allow certain headers to be included more easily. 2013-05-21 21:20:10 +00:00
net80211 Fix a VAP BSS node reference in the HT code to actually take a reference 2013-05-10 09:37:58 +00:00
netatalk Add const qualifier to the dst parameter of the ifnet if_output method. 2013-04-26 12:50:32 +00:00
netgraph Fix several typos 2013-05-12 16:43:26 +00:00
netinet Initialize the fibnum for outgoing packets to 0. This avoids 2013-05-19 16:06:43 +00:00
netinet6 Really fix netmask address family this time. 2013-05-19 19:42:46 +00:00
netipsec Use IP6STAT_INC/IP6STAT_DEC macros to update ip6 stats. 2013-04-09 07:11:22 +00:00
netipx
netnatm
netpfil Return meaningful error code from pf_state_key_attach() and 2013-05-11 18:06:51 +00:00
netsmb If the kernel is compiled with VMIMAGE support, the first attempt of 2013-05-04 16:55:48 +00:00
nfs Move the NFS FHA (File Handle Affinity) code from sys/nfsserver to 2013-04-17 22:42:43 +00:00
nfsclient When an NFS unmount occurs, once vflush() writes the last dirty 2013-04-18 23:20:16 +00:00
nfsserver Move the NFS FHA (File Handle Affinity) code from sys/nfsserver to 2013-04-17 22:42:43 +00:00
nlm
ofed Fxi a bunch of typos. 2013-05-10 16:41:26 +00:00
opencrypto When porting XTS-related code from OpenBSD I forgot to update copyright (only 2013-02-20 22:59:53 +00:00
pc98 Tidy up some CVS workarounds. 2013-05-12 01:53:47 +00:00
pci - Corrrect mispellings of word useful 2013-04-17 11:45:15 +00:00
powerpc o Relax locking assertions for vm_page_find_least() 2013-05-21 20:38:19 +00:00
rpc Fix a potential socket leak in the NFS server. If a client closes its 2013-04-08 19:03:01 +00:00
security Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
sparc64 o Relax locking assertions for vm_page_find_least() 2013-05-21 20:38:19 +00:00
sys Add proper prerequisites for even two more headers. 2013-05-21 21:50:11 +00:00
teken
tools Further refine the handling of stop signals in the NFS client. The 2013-02-21 19:02:50 +00:00
ufs Properly spell sentinel (missed in 250891) 2013-05-22 05:07:55 +00:00
vm Acquire read lock on the src object for vm_fault_copy_entry(). 2013-05-22 15:11:00 +00:00
x86 Add basic support for FDT to i386 & amd64. This change includes: 2013-05-21 03:05:49 +00:00
xdr Use m_get() and m_getcl() instead of compat macros. 2013-03-15 10:21:18 +00:00
xen Fix loss of the emulated keyboard on Xen PV HVM domains. 2013-05-22 19:22:44 +00:00
Makefile Remove netncp cscope entry missed in r248097 2013-03-12 14:21:52 +00:00