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fdfe249b63
freebsd-skq/sys
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Konstantin Belousov fdfe249b63 Fix initial x87 state after r345562. 
After the referenced commit, we did not set x87 and sse valid bits in
the xstate_bv bitmask for initial fpu state (stored in memory), when
using XSAVE.

The state is loaded into FPU register file to initialize the process
FPU state, and since both bits were clear, the default x87 and SSE
states were loaded.  By chance, FreeBSD ABI SSE2 state is same as FPU
initial state, so the bug is not visible for 64bit processes.  But on
i386, the precision control should be set to double (53bit mantissa),
instead of the default double extended (64bit mantissa). For 32bit
processes on amd64, kernel reloads control word with the right mask,
which only left native i386 and amd64 native but using x87 as
affected.

Fix it by setting minimal required xstate_bv mask.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2019-04-16 19:46:02 +00:00
..
amd64 Fix initial x87 state after r345562. 2019-04-16 19:46:02 +00:00
arm allwinner: clk: Garbage collect old clock implementation 2019-04-16 19:38:16 +00:00
arm64 Merge ACPICA 20190329. 2019-03-29 20:21:28 +00:00
bsm Create new EINTEGRITY error with message "Integrity check failed". 2019-01-17 06:35:45 +00:00
cam Add new fields to mmc_data in preparation to SDIO CMD53 block mode support 2019-04-10 19:49:35 +00:00
cddl powerpc/dtrace: Fix dtrace powerpc asm, and simplify stack walking 2019-04-13 03:32:21 +00:00
compat correct readlinkat(2) return type 2019-04-16 13:26:31 +00:00
conf Move mpr/mps drivers from per-arch NOTES files into the MI notes 2019-04-13 06:30:45 +00:00
contrib The nvlist_report_missing is also used by the cnvlist. 2019-04-11 04:24:41 +00:00
crypto Embedded chacha: Add 0-bit iv + 128-bit counter mode 2019-03-01 23:30:23 +00:00
ddb ddb: Print the thread's pcb in 'show thread' 2019-02-09 21:08:19 +00:00
dev random(4): Add is_random_seeded(9) KPI 2019-04-16 17:12:17 +00:00
dts arm: dts: Remove some old DTS 2019-04-10 19:18:05 +00:00
fs ext2fs: Initial version of DTrace support. 2019-04-16 11:37:15 +00:00
gdb
geom Implement automatic online expansion of GELI providers - if the underlying 2019-04-03 23:57:37 +00:00
gnu Import DTS files from Linux 5.0 2019-04-10 18:15:36 +00:00
i386 Fix initial x87 state after r345562. 2019-04-16 19:46:02 +00:00
isa
kern stack_protector: Add tunable to bypass random cookies 2019-04-16 18:47:20 +00:00
kgssapi * Handle SIGPIPE in gssd 2019-02-21 01:30:37 +00:00
libkern random(4): Block read_random(9) on initial seeding 2019-04-15 18:40:36 +00:00
mips The Atheros AR7241 has 20 GPIO pins 2019-03-25 07:48:52 +00:00
modules Add support for INET6 addresses to the kernel code that dumps open/lock state. 2019-04-13 22:00:09 +00:00
net When sending a routing message, don't allow the user to set the 2019-04-14 10:18:14 +00:00
net80211 net80211: correct check for SMPS node flags updates 2019-03-18 02:40:22 +00:00
netgraph Remove 'dir' argument in ng_ipfw_input, since ip_fw_args now has this info. 2019-03-14 22:30:05 +00:00
netinet When sending IPv4 packets on a SOCK_RAW socket using the IP_HDRINCL option, 2019-04-13 10:47:47 +00:00
netinet6 Reinitialize multicast source filter structures after invalidation. 2019-04-11 08:00:59 +00:00
netipsec Replace read_random(9) with more appropriate arc4rand(9) KPIs 2019-04-04 01:02:50 +00:00
netpfil Use IN_foo() macros from sys/netinet/in.h inplace of handcrafted code 2019-04-04 19:01:13 +00:00
netsmb Remove unused argument to priv_check_cred. 2018-12-11 19:32:16 +00:00
nfs
nfsclient
nfsserver
nlm
ofed Mechanical cleanup of epoch(9) usage in network stack. 2019-01-09 01:11:19 +00:00
opencrypto Fix another bug introduced during the review process of r344140: 2019-02-25 19:14:16 +00:00
powerpc Move mpr/mps drivers from per-arch NOTES files into the MI notes 2019-04-13 06:30:45 +00:00
riscv RISC-V: initialize pcpu slightly earlier 2019-04-07 20:12:24 +00:00
rpc Fix malloc stats for the RPCSEC_GSS server code when DEBUG is enabled. 2019-04-04 01:23:06 +00:00
security Create kernel module to parse Veriexec manifest based on envs 2019-04-03 03:57:37 +00:00
sparc64 Move mpr/mps drivers from per-arch NOTES files into the MI notes 2019-04-13 06:30:45 +00:00
sys random(4): Add is_random_seeded(9) KPI 2019-04-16 17:12:17 +00:00
teken Attempt to complete fixing programmable function keys for syscons. 2019-02-20 02:14:41 +00:00
tests Regularize the Netflix copyright 2019-02-04 21:28:25 +00:00
tools make_dtb.sh: Use $CPP instead of assuming that cpp is in $PATH 2018-12-14 23:53:28 +00:00
ufs Handle races when remounting UFS volume from ro to rw. 2019-04-08 15:20:05 +00:00
vm for a cache-only zone the destructor tries to destroy a non-existent keg 2019-04-12 12:46:25 +00:00
x86 pci_cfgreg.c: Use io port config access for early boot time. 2019-04-09 18:07:17 +00:00
xdr
xen xen: introduce a new way to setup event channel upcall 2019-01-30 11:34:52 +00:00
Makefile