Re: [PATCH 2/4] x86 paravirt_ops: paravirt_desc.h for native descriptor ops.

Dave Jones
2006-08-07T17:20:26Z

On Mon, Aug 07, 2006 at 10:53:28AM +0200, Andi Kleen wrote:
> On Monday 07 August 2006 09:50, Rusty Russell wrote:
> > On Mon, 2006-08-07 at 07:40 +0200, Andi Kleen wrote:
> > > On Monday 07 August 2006 06:45, Rusty Russell wrote:
> > > > Unfortunately, due to include cycles, we can't put these in
> > > > paravirt.h: we use a separate header for these.
> > > >
> > > > The implementation comes from Zach's [RFC, PATCH 10/24] i386 Vmi descriptor changes:
> > > >
> > > > Descriptor and trap table cleanups. Add cleanly written accessors for
> > > > IDT and GDT gates so the subarch may override them. Note that this
> > > > allows the hypervisor to transparently tweak the DPL of the descriptors
> > > > as well as the RPL of segments in those descriptors, with no unnecessary
> > > > kernel code modification. It also allows the hypervisor implementation
> > > > of the VMI to tweak the gates, allowing for custom exception frames or
> > > > extra layers of indirection above the guest fault / IRQ handlers.
> > >
> > > Nice cleanup. The old assembly mess was ripe to be killed for a long time.
> >
> > OK, here's that patch extracted out.
>
> Is there something wrong with your mailer? This one doesn't apply either:

Looks like it's against Linus' tree, not whatever you were trying against...
(13:19:10:davej@nwo:linux-2.6)$ cat ~/rusty | patch -p1 --dry-run
patching file arch/i386/kernel/traps.c
Hunk #1 succeeded at 1116 (offset 4 lines).
Hunk #3 succeeded at 1132 (offset 4 lines).
patching file include/asm-i386/desc.h
(13:19:15:davej@nwo:linux-2.6)$

Dave

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