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Message-Id: <200608070740.23840.ak@muc.de> Date: Mon, 7 Aug 2006 07:40:23 +0200 From: Andi Kleen <ak@....de> To: virtualization@...ts.osdl.org Cc: Rusty Russell <rusty@...tcorp.com.au>, Andrew Morton <akpm@...l.org>, Chris Wright <chrisw@...s-sol.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 2/4] x86 paravirt_ops: paravirt_desc.h for native descriptor ops. 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. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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