freebsd-dev/sys/pc98
Konstantin Belousov 6cf9a08d2c Introduce the x86 kernel interfaces to allow kernel code to use
FPU/SSE hardware. Caller should provide a save area that is chained
into the stack of the areas; pcb save_area for usermode FPU state is
on top. The pcb now contains a pointer to the current FPU saved area,
used during FPUDNA handling and context switches.  There is also a
facility to allow the kernel thread to use pcb save_area.

Change the dreaded warnings "npxdna in kernel mode!" into the panics
when FPU usage is not registered.

KPI discussed with:	fabient
Tested by:    pho, fabient
Hardware provided by:	Sentex Communications
MFC after:    1 month
2010-06-05 15:59:59 +00:00
..
apm
cbus Reduce diffs against syscons_isa.c. No functional changes. 2010-05-26 11:31:57 +00:00
compile
conf Change USB_DEBUG to #ifdef and allow it to be turned off. Previously this had 2010-04-22 21:31:34 +00:00
include Change ad_firmware_geom_adjust() to operate on a struct disk * only and 2010-05-20 12:46:19 +00:00
linux
pc98 Introduce the x86 kernel interfaces to allow kernel code to use 2010-06-05 15:59:59 +00:00