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2474dccf1a
freebsd-dev/sys
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Bjoern A. Zeeb 2474dccf1a We already turn the AMD erratum383 workaround on for certain VM_GUEST_VM 
if specific CPU features are not present.
Some simulation environments, e.g. gem5, have been found to require more
TLB management from the kernel in certain setups. It is currently unclear why.
Turning on the workaround_erratum383 seems to help and make problems (panics)
go away.
Given this is a fairly uncommon environment so far, allowing the workaround
to be manually enabled from loader in order to make debugging and comparing
traces easier, but also to allow gem5 run FreeBSD in X86 timing mode, seems
to be the least intrusive option for now until the issue if fully understood.

Sponsored by:	DARPA/AFRL
Reviewed by:	kib, alc (earlier)
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D6206
2016-05-13 15:11:17 +00:00
..
amd64 Add locking annotations to amd64 struct md_page members. 2016-05-10 09:58:51 +00:00
arm Add OF_prop_free function as a counterpart for OF_*prop_alloc 2016-05-11 18:20:02 +00:00
arm64 Rename the internal BUC_DMA_* flags to BF_* so they won't conflict with 2016-05-12 15:24:36 +00:00
boot Fix a -Wformat warning by using %d, not %ld for md_iterations 2016-05-13 11:27:49 +00:00
bsm
cam Allow sleepable allocations in enclosure daemon threads. 2016-05-10 16:20:36 +00:00
cddl Include arpa/inet.h to get the htonl(3) definition 2016-05-13 11:15:33 +00:00
compat Handle case of class being set, but not parent when calling 2016-05-13 13:01:02 +00:00
conf Add gpiokeys driver 2016-05-11 17:57:26 +00:00
contrib Revert AccessWidth/BitOffset support for AcpiHwWrite() and AcpiHwRead() for 2016-04-30 06:48:48 +00:00
crypto aesni(4): Initialize error before use 2016-04-20 03:05:32 +00:00
ddb Revert r298938: Change x/a to work similar to gdb. 2016-05-06 20:28:28 +00:00
dev Version update patch. 2016-05-13 12:24:39 +00:00
fs nfsd: Fix use-after-free in NFS4 lock test service 2016-05-12 05:03:12 +00:00
gdb
geom Add missing include "opt_geom.h" to make GEOM_UZIP_DEBUG option working, 2016-05-06 20:32:39 +00:00
gnu Change OpenWRT imported dtsi files 2016-04-20 14:29:03 +00:00
i386 Add a new bus method to fetch device-specific CPU sets. 2016-05-09 20:50:21 +00:00
isa sys/isa: minor spelling fixes. 2016-05-03 21:51:52 +00:00
kern Stop hiding errors that result in failure to mount /dev. Otherwise, 2016-05-12 07:38:10 +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 Remove NULL checks after M_WAITOK allocations from sys/mips/. 2016-05-11 09:42:24 +00:00
modules sfxge(4): move ef10_vpd_* to ef10_vpd.c 2016-05-13 07:10:07 +00:00
net Allow silencing of 'promiscuous mode enabled/disabled' messages. 2016-05-12 19:42:13 +00:00
net80211 net80211: drop some unused variables / local macros 2016-05-12 22:17:00 +00:00
netgraph sys/netgraph: spelling fixes in comments. 2016-04-29 21:25:05 +00:00
netinet Fix a bug introduced by the implementation of I-DATA support. 2016-05-13 09:11:41 +00:00
netinet6 Remove obsolescent comments from nd6_purge(). 2016-05-09 23:43:12 +00:00
netipsec netipsec: Fix minor style nit 2016-05-10 20:14:11 +00:00
netnatm kernel: use our nitems() macro when it is available through param.h. 2016-04-19 23:48:27 +00:00
netpfil Fix memory leak possible in error case. 2016-05-11 10:04:32 +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 Remove slightly used const values that can be replaced with nitems(). 2016-04-21 15:38:28 +00:00
ofed sys/ofed: minor spelling fix. 2016-05-06 15:37:06 +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 Native PCI-express HotPlug support. 2016-05-05 22:26:23 +00:00
riscv Rework the list of all pmaps: embed the list link into pmap. 2016-04-26 14:38:18 +00:00
rpc sys/rpc: minor spelling fixes. 2016-05-06 01:49:46 +00:00
security sys/security: minor spelling fixes. 2016-05-06 16:59:04 +00:00
sparc64 sys/sparc64: minor spelling fixes. 2016-05-04 15:52:40 +00:00
sys Pollute more places with off64_t and add __off64_t 2016-05-12 21:18:17 +00:00
teken
tests
tools
ufs UFS: spelling fixes on comments. 2016-04-29 20:43:51 +00:00
vm Move vm_domain_rr_selectdomain() under #ifdef VM_NUMA_ALLOC. 2016-05-10 22:25:55 +00:00
x86 We already turn the AMD erratum383 workaround on for certain VM_GUEST_VM 2016-05-13 15:11:17 +00:00
xdr RPC: for pointers replace 0 with NULL. 2016-04-14 17:06:37 +00:00
xen
Makefile