CVSROOT:        /cvs
Module name:    src
Changes by:   2018/03/13 07:51:05

Modified files:
        sys/arch/i386/i386: acpi_machdep.c amd64errata.c cpu.c 
                            db_interface.c est.c gdt.c 
                            k1x-pstate.c kvm86.c kvm86call.S lapic.c 
                            locore.s machdep.c mptramp.s pmap.c 
                            powernow-k7.c powernow-k8.c vm_machdep.c 
        sys/arch/i386/include: cpu.h gdt.h pcb.h proc.h segments.h tss.h 
        sys/arch/i386/isa: npx.c 

Log message:
Preparation for i386 Meltdown fix:

- provide a cpu_softc for cpu_attach() etc.
- replace per PCB TSS with per CPU TSS

The first change prepares for cpu_info being embedded in a
cpu_full_info.  Therefore during autoconf/cpu_attach we hand down
a softc.

The second change removes the per PCB TSS.  We now have one TSS per
CPU, thus in cpu_switchto() we only have to patch the ring 0 stack
pointer instead of loading a new TSS.  This also allows for cleaning
up the GDT, so we only have a single slot for the TSS.

from hshoexer@;  OK deraadt@

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