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author | luoqi <luoqi@FreeBSD.org> | 1999-04-28 01:04:33 +0000 |
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committer | luoqi <luoqi@FreeBSD.org> | 1999-04-28 01:04:33 +0000 |
commit | af7e9be5cce9a2ceb819f00b3f58014d23ab57cd (patch) | |
tree | 0e70c0e764f072d43041acca8ac52e30616dced3 /sys/i386/include/vm86.h | |
parent | 0f4a245030e7f1acb03f8de0822a58b188fc0d28 (diff) | |
download | FreeBSD-src-af7e9be5cce9a2ceb819f00b3f58014d23ab57cd.zip FreeBSD-src-af7e9be5cce9a2ceb819f00b3f58014d23ab57cd.tar.gz |
Enable vmspace sharing on SMP. Major changes are,
- %fs register is added to trapframe and saved/restored upon kernel entry/exit.
- Per-cpu pages are no longer mapped at the same virtual address.
- Each cpu now has a separate gdt selector table. A new segment selector
is added to point to per-cpu pages, per-cpu global variables are now
accessed through this new selector (%fs). The selectors in gdt table are
rearranged for cache line optimization.
- fask_vfork is now on as default for both UP and SMP.
- Some aio code cleanup.
Reviewed by: Alan Cox <alc@cs.rice.edu>
John Dyson <dyson@iquest.net>
Julian Elischer <julian@whistel.com>
Bruce Evans <bde@zeta.org.au>
David Greenman <dg@root.com>
Diffstat (limited to 'sys/i386/include/vm86.h')
-rw-r--r-- | sys/i386/include/vm86.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/i386/include/vm86.h b/sys/i386/include/vm86.h index 0862f49..a7d565c 100644 --- a/sys/i386/include/vm86.h +++ b/sys/i386/include/vm86.h @@ -26,7 +26,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: vm86.h,v 1.8 1998/09/29 09:06:00 bde Exp $ + * $Id: vm86.h,v 1.9 1999/03/18 04:37:35 jlemon Exp $ */ #ifndef _MACHINE_VM86_H_ @@ -49,6 +49,7 @@ typedef union { /* layout must match definition of struct trapframe_vm86 in <machine/frame.h> */ struct vm86frame { + int kernel_fs; int kernel_es; int kernel_ds; reg86_t edi; |