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Roger Pau Monné 68e58ea7ed xen/virtio: fix balloon drivers to not mark pages as WIRED 
Prevent the Xen and VirtIO balloon drivers from marking pages as
wired. This prevents them from increasing the system wired page count,
which can lead to mlock failing because of hitting the limit in
vm.max_wired.

In the Xen case make sure pages are zeroed before giving them back to
the hypervisor, or else we might be leaking data. Also remove the
balloon_{append/retrieve} and link pages directly into the
ballooned_pages queue using the plinks.q field in the page struct.

Sponsored by: Citrix Systems R&D
Reviewed by: kib, bryanv
Approved by: gibbs

dev/virtio/balloon/virtio_balloon.c:
 - Don't allocate pages with VM_ALLOC_WIRED.

dev/xen/balloon/balloon.c:
 - Don't allocate pages with VM_ALLOC_WIRED.
 - Make sure pages are zeroed before giving them back to the
   hypervisor.
 - Remove the balloon_entry struct and the balloon_{append/retrieve}
   functions and use the page plinks.q entry to link the pages
   directly into the ballooned_pages queue.
2014-06-25 09:51:08 +00:00
..
amd64 Add FPU_KERN_KTHR flag to fpu_kern_enter(9), which avoids saving FPU 2014-06-23 07:37:54 +00:00
arm Remove the incomplete Tegra 2 code, nobody was maintaining it. The AC100 2014-06-22 15:15:52 +00:00
boot mdoc: fix AUTHORS section. 2014-06-09 19:36:08 +00:00
bsm IFp4 @1192291: 2014-04-07 20:44:00 +00:00
cam Execute task management request directly in ctl_queue() context. 2014-06-19 13:19:35 +00:00
cddl Continue the crusade towards a dev_clone()-free kernel, removing its 2014-06-25 03:54:02 +00:00
compat - Add support for SG_GET_SG_TABLESIZE IOCTL to report that we don't support 2014-06-04 12:05:47 +00:00
conf cxgbe(4): Update the bundled T4 and T5 firmwares to versions 1.11.27.0. 2014-06-22 23:40:20 +00:00
contrib Fix case where fastroute or "to interface" is used with incorrect FIB. 2014-06-19 05:45:17 +00:00
crypto Put the aesni_cipher_setup() and aesni_cipher_process() functions into 2014-06-24 06:55:49 +00:00
ddb handle longer commands so that lines don't overflow... people who added 2014-06-02 23:50:19 +00:00
dev xen/virtio: fix balloon drivers to not mark pages as WIRED 2014-06-25 09:51:08 +00:00
fs Use existing PHOLD() and PRELE() macros. 2014-06-24 18:25:43 +00:00
gdb
geom Add disklabel64 support to GEOM_PART class. 2014-06-11 10:42:34 +00:00
gnu Symbolic bindings for the dts files... 2014-02-28 16:51:33 +00:00
i386 Add FPU_KERN_KTHR flag to fpu_kern_enter(9), which avoids saving FPU 2014-06-23 07:37:54 +00:00
ia64 - Modify vm_page_unwire() and vm_page_enqueue() to directly accept 2014-06-16 18:15:27 +00:00
isa Remove vestiges of knowing the ISA bus, which we gave up on around 20 2014-03-19 21:03:04 +00:00
kern sysctl subsystem uses sxlocks so avoid to setup dynamic sysctl nodes 2014-06-24 15:16:55 +00:00
kgssapi
libkern Use strcasecmp() instead of strcmp() when checking user-supplied encoding 2014-06-09 19:27:47 +00:00
mips Remove /etc/gnats from here, too. 2014-06-20 11:47:49 +00:00
modules cxgbe(4): Update the bundled T4 and T5 firmwares to versions 1.11.27.0. 2014-06-22 23:40:20 +00:00
net - Modify vm_page_unwire() and vm_page_enqueue() to directly accept 2014-06-16 18:15:27 +00:00
net80211 Use logical rather than bitwise OR in if() expression. 2014-04-26 23:22:49 +00:00
netgraph PF_BLUETOOTH protocols: skip initialization of non-virtualized globals 2014-06-10 18:21:37 +00:00
netinet Fix a bug which incorrectly allowed two listening SCTP sockets on 2014-06-20 20:17:39 +00:00
netinet6 Make nd6_gctimer tunable. 2014-06-23 16:27:29 +00:00
netipsec Use IPv4 statistics in ipsec4_process_packet() rather than the IPv6 2014-05-28 23:01:20 +00:00
netnatm
netpfil DNOLD_IS_ECN introduced by r266941 is not required. 2014-06-01 20:19:17 +00:00
netsmb Remove redundant unlock. 2014-04-17 12:22:08 +00:00
nfs Fix/improve fhe_stats sysctl output. 2014-06-14 12:26:12 +00:00
nfsclient
nfsserver The PR reported that the old NFS server did not set uio_td == NULL 2014-04-24 20:47:58 +00:00
nlm Correct a typo in nlm_find_host_by_addr(): the intention of the 2014-03-11 00:25:55 +00:00
ofed - Fix out of range shifting bug in bitops.h. 2014-06-12 13:33:01 +00:00
opencrypto allow the kern.cryptodevallowsoft sysctl to enable symetric/hashes too... 2014-03-11 01:45:46 +00:00
pc98 lindev(4): finish the partial commit in r265212 2014-05-02 07:14:22 +00:00
pci Fix various NIC drivers to properly cleanup static DMA resources. 2014-06-11 14:53:58 +00:00
powerpc Commit the rest of the changes that were intended to be part of r266826. 2014-05-29 01:42:22 +00:00
rpc Fix race in r267221. 2014-06-09 15:00:43 +00:00
security audit: plug FILEDESC_LOCK leak in audit_canon_path. 2014-03-21 01:30:33 +00:00
sparc64 Restore comments accidentally removed. 2014-06-06 04:08:55 +00:00
sys Permit changing cpu mask for cpu set 1 in presence of drivers 2014-06-22 11:32:23 +00:00
teken Fix typo. 2014-02-06 13:28:06 +00:00
tools Call cpp with -P to avoid printing line markings. 2014-06-10 06:24:01 +00:00
ufs In msdosfs_setattr(), add a check for result of the utimes(2) 2014-06-17 07:11:00 +00:00
vm Now that vm_map_insert() sets MAP_ENTRY_GROWS_{DOWN,UP} on the stack entries 2014-06-25 03:30:03 +00:00
x86 Fix compile warning: Remove duplicate external declaration. 2014-06-19 05:06:24 +00:00
xdr
xen xen: add missing files 2014-06-16 08:54:04 +00:00
Makefile Reorganize this Makefile so that all the bsd.*.mk bits are in one 2014-05-29 16:03:08 +00:00