Konstantin Belousov 65f99c74fb Clear the kernel grab of the FPU state on fork. The pcb_save pointer ... is already correctly reset to the FPU user save area, only PCB_KERNFPU flag might leak from old thread state into the new state. For creation of the user-mode thread, the change is nop since corresponding syscall code does not use FPU. On the other hand, creation of a kernel thread forks from a thread selected arbitrary from proc0, which might use FPU. Reported and tested by: Chris Torek <torek@torek.net> Sponsored by: The FreeBSD Foundation MFC after: 1 week		2014-03-29 11:56:33 +00:00
..
amd64_mem.c
apic_vector.S	amd64/i386: switch IPI handlers to C code.	2014-03-11 10:03:29 +00:00
atomic.c
atpic_vector.S
autoconf.c
bios.c
bpf_jit_machdep.c	Provide includes that are needed in these files, and before were read	2013-10-26 18:18:50 +00:00
bpf_jit_machdep.h
cpu_switch.S	Move fpusave() wrapper for suspend hander to sys/amd64/amd64/fpu.c.	2014-03-04 21:35:57 +00:00
db_disasm.c	Add support for 'clac' and 'stac' to DDB's disassembler on amd64.	2014-01-27 18:53:18 +00:00
db_interface.c
db_trace.c	Fix the hardware watchpoints on SMP amd64. Load the updated %dr	2013-05-21 11:24:32 +00:00
elf_machdep.c	Remove duplicate header inclusion of <sys/sysent.h>	2012-08-07 05:46:36 +00:00
exception.S	- For kernel compiled only with KDTRACE_HOOKS and not any lock debugging	2013-11-25 07:38:45 +00:00
fpu.c	Move fpusave() wrapper for suspend hander to sys/amd64/amd64/fpu.c.	2014-03-04 21:35:57 +00:00
gdb_machdep.c
genassym.c	xen: add PV/PVH kernel entry point	2014-03-11 10:07:01 +00:00
identcpu.c	Remove spaces from boot messages when we print the CPU ID/Family/Stepping	2014-01-11 22:41:10 +00:00
in_cksum.c
initcpu.c	Use an ANSI C definition of initializecpucache() to match the declaration	2013-08-15 17:44:44 +00:00
io.c
locore.S	xen: add PV/PVH kernel entry point	2014-03-11 10:07:01 +00:00
machdep.c	amd64: Parse the EFI memory map if present	2014-03-27 18:23:02 +00:00
mem.c	Fix two issues with /dev/mem access on amd64, both causing kernel page	2014-03-21 14:25:09 +00:00
minidump_machdep.c	Several small fixes for the amd64 minidump code.	2013-10-27 16:31:12 +00:00
mp_machdep.c	Several fixes for the PCID implementation:	2014-03-28 16:07:27 +00:00
mp_watchdog.c	Move <machine/apicvar.h> to <x86/apicvar.h>.	2014-01-23 20:10:22 +00:00
mpboot.S	Revert accidentally committed changes in 262748.	2014-03-04 20:16:00 +00:00
pmap.c	Several fixes for the PCID implementation:	2014-03-28 16:07:27 +00:00
prof_machdep.c	Use atomic load & store for TSC frequency. It may be overkill for amd64 but	2011-04-07 23:28:28 +00:00
ptrace_machdep.c	The PT_I386_{GET,SET}XMMREGS and PT_{GET,SET}XSTATE operate on the	2012-07-21 13:06:37 +00:00
sigtramp.S
stack_machdep.c
support.S	Fix the name of the pcb member in the comments.	2013-04-13 15:20:33 +00:00
sys_machdep.c	Update kernel inclusions of capability.h to use capsicum.h instead; some	2014-03-16 10:55:57 +00:00
trap.c	Fix two issues with /dev/mem access on amd64, both causing kernel page	2014-03-21 14:25:09 +00:00
uio_machdep.c	Delete stray clause 3 (Advertising clause) and renumber while i'm	2014-03-11 23:41:35 +00:00
uma_machdep.c	Rename global cnt to vm_cnt to avoid shadowing.	2014-03-22 10:26:09 +00:00
vm_machdep.c	Clear the kernel grab of the FPU state on fork. The pcb_save pointer	2014-03-29 11:56:33 +00:00
xen-locore.S	xen: add PV/PVH kernel entry point	2014-03-11 10:07:01 +00:00