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freebsd-skq/sys
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Ian Lepore f00519b613 Remove all dregs of a per-thread undefined-exception-mode stack. This is 
a leftover from the days when a low-level debugger had hooks in the
undefined exception vector and needed stack space to function.  These days
it effectively isn't used because we switch immediately to the svc32 mode
stack on exception entry.  For that, the single undef mode stack per core
that gets set up at init time works fine.

The stack wasn't necessary but it was harmful, because the space for it
was carved out of the normal per-thread svc32 stack, in effect cutting
that 8K stack in half.  If svc32 mode used more than 4k of stack space it
wandered down into the undef mode stack, and then an undef exception would
overwrite a couple words on the stack while switching to svc32 mode,
corrupting the scv32 stack.  Having another stack abut the bottom of the
svc32 stack also effectively mooted the guard page below the stack.

This work is based on analysis and patches submitted by Juergen Weiss.
2014-03-09 03:49:06 +00:00
..
amd64 Disable amd64 TLB Context ID (pcid) by default for now 2014-03-05 01:34:10 +00:00
arm Remove all dregs of a per-thread undefined-exception-mode stack. This is 2014-03-09 03:49:06 +00:00
boot Initial cut for DTS on the hl201 board. 2014-03-08 03:22:20 +00:00
bsm Change the cap_rights_t type from uint64_t to a structure that we can extend 2013-09-05 00:09:56 +00:00
cam Fix support for increased logical sector size (4K-native drives). 2014-03-07 09:45:40 +00:00
cddl All callers of static method load_nvlist() in spa.c handles error case, 2014-03-02 02:41:33 +00:00
compat linprocfs: add support for /sys/kernel/random/uuid 2014-02-27 00:43:10 +00:00
conf Use a full path to the target for make rules which create symlinks @, 2014-03-04 14:00:49 +00:00
contrib MFV r262756: 2014-03-05 01:33:15 +00:00
crypto fix broken style(9) in r258399 2013-11-23 00:28:18 +00:00
ddb
dev Fix panic "_mtx_lock_sleep: recursed on non-recursive mutex ttymtx" caused when 2014-03-09 02:07:15 +00:00
fs ext2fs: Fix a bug when sorting htree entries. 2014-03-06 21:02:16 +00:00
gdb rename scheduler->swapper and SI_SUB_RUN_SCHEDULER->SI_SUB_LAST 2013-07-24 09:45:31 +00:00
geom In g_eli_crypto_hmac_init(), zero out after using the ipad buffer, 2014-02-08 05:17:49 +00:00
gnu Symbolic bindings for the dts files... 2014-02-28 16:51:33 +00:00
i386 When the kernel is running in a virtual machine, it cannot rely upon the 2014-02-22 18:53:42 +00:00
ia64 When reading physical memory, make sure to access it using the right 2014-03-04 03:19:36 +00:00
isa
kern - Make runq_steal_from more aggressive. Previously it would examine only 2014-03-08 00:35:06 +00:00
kgssapi
libkern Fix typo 2013-11-29 20:14:26 +00:00
mips Populate the GPIO pins and GPIOLED configs 2014-03-05 04:22:07 +00:00
modules Use SYSDIR to reference to the top of the sys hierarchy. Define SYSDIR 2014-03-06 01:59:13 +00:00
net The route code used to mtx_destroy() a locked mutex before rtentry free. Now, 2014-03-05 21:16:46 +00:00
net80211 Another round of removing historical mbuf(9) allocator flags. 2014-01-16 13:44:47 +00:00
netatalk Fix build. 2014-03-05 02:35:41 +00:00
netgraph Be much more specific (and correct) about the device id matching. 2014-01-09 15:31:44 +00:00
netinet - Remove rt_metrics_lite and simply put its members into rtentry. 2014-03-05 01:17:47 +00:00
netinet6 - Remove rt_metrics_lite and simply put its members into rtentry. 2014-03-05 01:17:47 +00:00
netipsec Remove more constants related to static sysctl nodes. The MAXID constants 2014-02-25 18:44:33 +00:00
netipx - Remove rt_metrics_lite and simply put its members into rtentry. 2014-03-05 01:17:47 +00:00
netnatm Provide includes that are needed in these files, and before were read 2013-10-26 18:18:50 +00:00
netpfil - Remove rt_metrics_lite and simply put its members into rtentry. 2014-03-05 01:17:47 +00:00
netsmb Catch up with sb_timeo type change in r255138. This fixes 2013-11-08 08:44:09 +00:00
nfs - Remove rt_metrics_lite and simply put its members into rtentry. 2014-03-05 01:17:47 +00:00
nfsclient For software builds, the NFS client does many small 2013-12-07 23:05:59 +00:00
nfsserver Fix RPC server threads file handle affinity to work better with ZFS. 2013-12-23 08:43:16 +00:00
nlm Intermittent crashes in the NLM (rpc.lockd) code during system 2013-09-06 23:14:31 +00:00
ofed Simplify filling sockaddr_dl structure for if_resolvemulti() 2014-01-18 23:24:51 +00:00
opencrypto Prevent races in accesses of the software crypto session array. 2014-01-28 22:02:29 +00:00
pc98 Don't waste a page of KVA for the boot-time memory test on x86. For amd64, 2014-02-11 22:02:40 +00:00
pci - Implement the RX EARLYOFF and RXDV GATED bits as done by RealTek's Linux 2014-02-05 23:13:40 +00:00
powerpc Correct the order of arguments to mtx_init(). 2014-02-14 11:18:15 +00:00
rpc Fix lock acquisition in case no request space available, missed in r260097. 2014-02-04 00:00:01 +00:00
security As constantly reported during kernel compilation, m_buflen is unsigned so 2013-12-25 20:10:17 +00:00
sparc64 Merge from head up to r262472. 2014-02-25 07:40:37 +00:00
sys Partial revert of change 262914. I screwed up subversion syntax with 2014-03-07 23:40:36 +00:00
teken Fix typo. 2014-02-06 13:28:06 +00:00
tools Use proper include path for dtc as well as cpp. 2014-02-28 22:37:35 +00:00
ufs - If we fail to do a non-blocking acquire of a buf lock while doing a 2014-03-06 00:13:21 +00:00
vm After r251709, avoid a clang 3.4 warning about an unused static const 2014-02-14 17:47:18 +00:00
x86 Move fpusave() wrapper for suspend hander to sys/amd64/amd64/fpu.c. 2014-03-04 21:35:57 +00:00
xdr
xen Remove redundant redeclaration of gdtset in sys/xen/xen-os.h, to silence 2013-10-18 17:06:13 +00:00
Makefile Add netpfil to CSCOPEDIRS. 2013-12-30 08:36:17 +00:00