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xen-devel
[Xen-devel] Re: [RFC, PATCH 10/24] i386 Vmi descriptor changes
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To: |
Zachary Amsden <zach@xxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: [RFC, PATCH 10/24] i386 Vmi descriptor changes |
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From: |
Chris Wright <chrisw@xxxxxxxxxxxx> |
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Date: |
Wed, 15 Mar 2006 02:13:21 -0800 |
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Cc: |
Andrew Morton <akpm@xxxxxxxx>, Joshua LeVasseur <jtl@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Pratap Subrahmanyam <pratap@xxxxxxxxxx>, Wim Coekaerts <wim.coekaerts@xxxxxxxxxx>, Jack Lo <jlo@xxxxxxxxxx>, Dan Hecht <dhecht@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxxxx>, Christopher Li <chrisl@xxxxxxxxxx>, Chris Wright <chrisw@xxxxxxxxxxxx>, Virtualization Mailing List <virtualization@xxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxx>, Anne Holler <anne@xxxxxxxxxx>, Jyothy Reddy <jreddy@xxxxxxxxxx>, Kip Macy <kmacy@xxxxxxxxxxx>, Ky Srinivasan <ksrinivasan@xxxxxxxxxx>, Leendert van Doorn <leendert@xxxxxxxxxxxxxx>, Dan Arai <arai@xxxxxxxxxx> |
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Wed, 15 Mar 2006 10:28:39 +0000 |
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* Zachary Amsden (zach@xxxxxxxxxx) wrote:
> 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 cleanups, VMI or not.
thanks,
-chris
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