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45cd4c8cef
freebsd-nq/sys
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Ian Lepore 45cd4c8cef Revert the recent armv6 changes to ALIGNED_POINTER(), restoring the 
fully-pessimized implementation that requires a type to be aligned to
its natural size.

On armv6+ the compiler might generate load-/store-multiple instructions
which require 4-byte alignment even though the source code is only
accessing individual uint32_t values in a way that doesn't require any
particular alignment at all.  The compiler apparently feels free to
combine multiple accesses into a single instruction that requires a
more-strict alignment, and no set of compiler flags seems to disable
this behavior (at least in clang 3.8).

This fixes alignment faults on arm systems using wifi adapters.  The
wifi code uses ALIGNED_POINTER(p, uint32_t) to decide whether it needs
to copy-align tcp headers.  Because clang is combining several uint32_t
accesses into a single ldm instruction, we need to say that accessing a
uint32_t requires 4-byte alignment.

Approved by:	re(gjb)
2016-06-21 17:53:42 +00:00
..
amd64 Update comments for the MD functions managing contexts for new 2016-06-16 12:05:44 +00:00
arm Revert the recent armv6 changes to ALIGNED_POINTER(), restoring the 2016-06-21 17:53:42 +00:00
arm64 Update comments for the MD functions managing contexts for new 2016-06-16 12:05:44 +00:00
boot Print a message when disks are found but no logical partition are 2016-06-17 17:09:22 +00:00
bsm
cam Commit the bits of nda that were missed. This should fix the build. 2016-06-10 06:04:53 +00:00
cddl Fix uninitialized variable from r300881 2016-06-21 15:27:16 +00:00
compat Update comments for the MD functions managing contexts for new 2016-06-16 12:05:44 +00:00
conf Update 11.0 to -ALPHA4 in preparation of a new set of snapshot 2016-06-17 00:00:45 +00:00
contrib Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
crypto Connect the SHA-512t256 and Skein hashing algorithms to ZFS 2016-05-31 04:12:14 +00:00
ddb Add a small set of logical operators to DDB command language. 2016-05-16 19:42:38 +00:00
dev [ath] fix TX throughput for EDMA chips by pushing more into the TX FIFO. 2016-06-21 15:38:20 +00:00
fs Do not access NFS data for reclaimed vnode. 2016-06-19 18:29:43 +00:00
gdb
geom When we are in panic, always go the asynchronous path in g_mirror_destroy(), 2016-06-01 22:11:54 +00:00
gnu Revert changes for local testing, inadvertantly commited in r300811. 2016-05-26 23:59:42 +00:00
i386 Update comments for the MD functions managing contexts for new 2016-06-16 12:05:44 +00:00
isa sys/isa: minor spelling fixes. 2016-05-03 21:51:52 +00:00
kern Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
kgssapi kgssapi: insignificant spelling fix. 2016-05-03 22:05:03 +00:00
libkern sys: Make use of our rounddown() macro when sys/param.h is available. 2016-04-30 14:41:18 +00:00
mips Update comments for the MD functions managing contexts for new 2016-06-16 12:05:44 +00:00
modules Change the default build behavior so we don't compile extra TCP modules by 2016-06-10 19:06:11 +00:00
net Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
net80211 [net80211] remove node scan lock / generation number + fix few LORs 2016-06-19 07:31:02 +00:00
netgraph Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
netinet Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
netinet6 Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
netipsec Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
netnatm kernel: use our nitems() macro when it is available through param.h. 2016-04-19 23:48:27 +00:00
netpfil Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
netsmb sys/net*: minor spelling fixes. 2016-05-03 18:05:43 +00:00
nfs NFS: spelling fixes on comments. 2016-04-29 16:07:25 +00:00
nfsclient
nfsserver
nlm Remote and local adv lock servers might de-synchronize (the added comment 2016-06-19 18:32:35 +00:00
ofed Fix bug in iwcm that caused a panic in iw_cm_wq when krping is run 2016-06-14 20:58:05 +00:00
opencrypto sys/opencrypto: minor spelling fixes. 2016-05-06 23:37:19 +00:00
pc98 Move 'device pci' for the PCI bus driver to the MI NOTES file. 2016-04-29 23:53:55 +00:00
powerpc Update comments for the MD functions managing contexts for new 2016-06-16 12:05:44 +00:00
riscv Update comments for the MD functions managing contexts for new 2016-06-16 12:05:44 +00:00
rpc Deobfuscate cleanup path in clnt_bck_create(..) 2016-06-10 17:53:28 +00:00
security Implement AUE_PREAD and AUE_PWRITE BSM conversion support, eliminating 2016-06-13 09:22:20 +00:00
sparc64 Update comments for the MD functions managing contexts for new 2016-06-16 12:05:44 +00:00
sys vfs: ifdef out noop vop_* primitives on !DEBUG_VFS_LOCKS kernels 2016-06-17 19:41:30 +00:00
teken
tests
tools
ufs arc4random() returns 0 to (2**32)−1, use an alternative to initialize 2016-05-22 14:31:20 +00:00
vm The vmtotal sysctl handler marks active vm objects to calculate 2016-06-21 17:49:33 +00:00
x86 Trim some spaces to record correct commit message for the r301278. 2016-06-03 18:23:45 +00:00
xdr RPC: for pointers replace 0 with NULL. 2016-04-14 17:06:37 +00:00
xen xen: Correct typo in #undef for symbol NBPL 2016-06-06 14:55:46 +00:00
Makefile