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From: Bruce Evans <bde@FreeBSD.ORG>
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Date: Fri, 6 Jun 1997 21:36:11 -0700 (PDT)
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To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-sys@FreeBSD.ORG
Subject: cvs commit: src/sys/i386/include md_var.h pcb.h reg.h
         src/sys/i386/i386 genassym.c machdep.c swtch.s trap.c
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bde         1997/06/06 21:36:11 PDT

  Modified files:
    sys/i386/include     md_var.h pcb.h reg.h 
    sys/i386/i386        genassym.c machdep.c swtch.s trap.c 
  Log:
  Preserve %fs and %gs across context switches.  This has a relatively low
  cost since it is only done in cpu_switch(), not for every exception.
  The extra state is kept in the pcb, and handled much like the npx state,
  with similar deficiencies (the state is not preserved across signal
  handlers, and error handling loses state).
  
  Revision  Changes    Path
  1.14      +3 -1      src/sys/i386/include/md_var.h
  1.22      +4 -2      src/sys/i386/include/pcb.h
  1.15      +13 -1     src/sys/i386/include/reg.h
  1.47      +3 -1      src/sys/i386/i386/genassym.c
  1.247     +9 -1      src/sys/i386/i386/machdep.c
  1.52      +13 -1     src/sys/i386/i386/swtch.s
  1.99      +20 -1     src/sys/i386/i386/trap.c