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e406235000
freebsd-skq/sys/amd64
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Konstantin Belousov e406235000 Fix for mis-interpretation of PCB_KERNFPU. 
RIght now PCB_KERNFPU is used both as indication that kernel prepared
hardware FPU context to use and that the thread is fpu-kern
thread.  This also breaks fpu_kern_enter(FPU_KERN_NOCTX), since
fpu_kern_leave() then clears PCB_KERNFPU.

Introduce new flag PCB_KERNFPU_THR which indicates that the thread is
fpu-kern.  Do not clear PCB_KERNFPU if fpu-kern thread leaves noctx
fpu region.

Reported and tested by:	jhb (amd64)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D25511
2020-10-14 23:01:41 +00:00
..
acpica amd64: clean up empty lines in .c and .h files 2020-09-01 21:16:54 +00:00
amd64 Fix for mis-interpretation of PCB_KERNFPU. 2020-10-14 23:01:41 +00:00
cloudabi32 Get rid of sa->narg. It serves no purpose; use sa->callp->sy_narg instead. 2020-09-27 18:47:06 +00:00
cloudabi64 Get rid of sa->narg. It serves no purpose; use sa->callp->sy_narg instead. 2020-09-27 18:47:06 +00:00
conf 10Gigabit Ethernet driver for AMD SoC 2020-10-11 16:01:16 +00:00
ia32 Get rid of sa->narg. It serves no purpose; use sa->callp->sy_narg instead. 2020-09-27 18:47:06 +00:00
include Fix for mis-interpretation of PCB_KERNFPU. 2020-10-14 23:01:41 +00:00
linux Get rid of sa->narg. It serves no purpose; use sa->callp->sy_narg instead. 2020-09-27 18:47:06 +00:00
linux32 Get rid of sa->narg. It serves no purpose; use sa->callp->sy_narg instead. 2020-09-27 18:47:06 +00:00
pci pci_cfgreg.c: Use io port config access for early boot time. 2019-04-09 18:07:17 +00:00
sgx amd64: clean up empty lines in .c and .h files 2020-09-01 21:16:54 +00:00
vmm Remove svn:executable from a couple of vmm(4) source files. 2020-10-01 22:20:29 +00:00
Makefile