freebsd-dev/sys
Conrad Meyer 2744a0b69b Drop CACHE_LINE_SIZE to 64 bytes on x86
The actual cache line size has always been 64 bytes.

The 128 number arose as an optimization for Core 2 era Intel processors.  By
default (configurable in BIOS), these CPUs would prefetch adjacent cache
lines unintelligently.  Newer CPUs prefetch more intelligently.

The latest Core 2 era CPU was introduced in September 2008 (Xeon 7400
series, "Dunnington").  If you are still using one of these CPUs, especially
in a multi-socket configuration, consider locating the "adjacent cache line
prefetch" option in BIOS and disabling it.

Reported by:	mjg
Reviewed by:	np
Discussed with:	jhb
Sponsored by:	Dell EMC Isilon
2017-08-28 22:28:41 +00:00
..
amd64 Drop CACHE_LINE_SIZE to 64 bytes on x86 2017-08-28 22:28:41 +00:00
arm Use better hard-coded defaults for the cursor shape, and remove nearby 2017-08-19 19:33:16 +00:00
arm64 Remove an unneeded call to pmap_invalidate_all. This was never called as 2017-08-22 18:20:25 +00:00
boot Eliminate redunant device path matching. 2017-08-27 03:10:16 +00:00
bsm Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
cam Add comment about where we need to place this routine, and why. 2017-08-28 19:27:33 +00:00
cddl Add a guard around _ILP32 for mips. 2017-08-21 17:45:06 +00:00
compat Sync CloudABI compatibility against the latest upstream version (v0.13). 2017-08-25 11:01:39 +00:00
conf Add new mlx5ib(4) driver to the kernel source tree which supports 2017-08-23 12:09:37 +00:00
contrib Sync CloudABI compatibility against the latest upstream version (v0.13). 2017-08-25 11:01:39 +00:00
crypto aesni: quiet -Wcast-qual 2017-08-16 22:54:35 +00:00
ddb Rename mkdumpheader() and group EKCD functions in kern_shutdown.c. 2017-08-18 04:04:09 +00:00
dev rtwn(4): some initial preparations for (basic) VHT support. 2017-08-28 22:14:16 +00:00
fs Style. 2017-08-28 21:04:56 +00:00
gdb
geom Let g_access() log the actual error number. 2017-08-27 12:24:25 +00:00
gnu Update DTS files from Linux 4.12 2017-07-09 13:53:32 +00:00
i386 Drop CACHE_LINE_SIZE to 64 bytes on x86 2017-08-28 22:28:41 +00:00
isa Use better hard-coded defaults for the cursor shape, and remove nearby 2017-08-19 19:33:16 +00:00
kern Allow vdrop() of a vnode not yet on the per-mount list after r306512. 2017-08-28 19:29:51 +00:00
kgssapi
libkern x86/crc32_sse42.c: quiet unused function warning 2017-08-11 17:05:31 +00:00
mips Fix limits.h constants to have correct type on MIPS 2017-08-26 03:21:12 +00:00
modules Add new mlx5ib(4) driver to the kernel source tree which supports 2017-08-23 12:09:37 +00:00
net Garbage collect RT_NORTREF, which is no longer in use after FLOWTABLE removal. 2017-08-24 23:08:12 +00:00
net80211 net80211: fix a typo (premable -> preamble). 2017-08-27 22:13:03 +00:00
netgraph Check return value from soaccept(). 2017-06-14 16:13:20 +00:00
netinet Fix blackhole detection. 2017-08-28 11:41:18 +00:00
netinet6 After inpcb route caching was put back in place there is no need for 2017-07-27 13:03:36 +00:00
netipsec Remove stale comments. 2017-08-21 13:54:29 +00:00
netpfil pf_get_sport(): Prevent possible endless loop when searching for an unused nat port 2017-08-08 21:09:26 +00:00
netsmb
nfs Improve FHA locality control for NFS read/write requests. 2017-07-31 15:23:19 +00:00
nfsclient Add an NFSv4.1 mount option for "use one openowner". 2017-04-13 21:54:19 +00:00
nfsserver
nlm Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
ofed Change reject message type when destroying cm_id in ibore. 2017-08-03 09:31:10 +00:00
opencrypto Use const with some read-only buffers in opencrypto APIs. 2017-05-09 18:28:42 +00:00
powerpc Use better hard-coded defaults for the cursor shape, and remove nearby 2017-08-19 19:33:16 +00:00
riscv Support for v1.10 (latest) of RISC-V privilege specification. 2017-08-10 14:18:09 +00:00
rpc Listening sockets improvements. 2017-06-08 21:30:34 +00:00
security Correct bitwise test in mac_bsdextended ugidfw_rule_valid() 2017-06-13 01:17:58 +00:00
sparc64 Rename mkdumpheader() and group EKCD functions in kern_shutdown.c. 2017-08-18 04:04:09 +00:00
sys Drop CACHE_LINE_SIZE to 64 bytes on x86 2017-08-28 22:28:41 +00:00
teken Fix syscons escape sequence for setting the local cursor type. This sequence 2017-08-18 15:40:40 +00:00
tests style(9): sort headers 2017-05-09 05:08:47 +00:00
tools make.conf: Add the possibility to use another DTC 2017-06-17 23:34:53 +00:00
ufs Protect v_rdev dereference with the vnode interlock instead of the 2017-08-25 09:51:22 +00:00
vm Synchronize page laundering with pmap_extract_and_hold(). 2017-08-28 22:10:15 +00:00
x86 Stop masking FSGSBASE and SMEP features under monitors. 2017-08-24 10:57:34 +00:00
xdr * limit size of buffers to RPC_MAXDATASIZE 2017-06-01 06:12:25 +00:00
xen
Makefile Remove glimpse make target added in r181432 2017-05-22 15:53:30 +00:00