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Re: [Xen-devel] [PATCH 3/5] vtdt: Modify vlapic code to add vtdt support
| To: | "Wei, Gang" <gang.wei@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH 3/5] vtdt: Modify vlapic code to add vtdt support |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Tue, 14 Dec 2010 07:35:24 +0000 |
| Cc: | Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx> |
| Delivery-date: | Mon, 13 Dec 2010 23:36:30 -0800 |
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| Thread-topic: | [Xen-devel] [PATCH 3/5] vtdt: Modify vlapic code to add vtdt support |
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On 14/12/2010 03:27, "Wei, Gang" <gang.wei@xxxxxxxxx> wrote:
> diff -r d042ca4c6b68 xen/include/public/arch-x86/hvm/save.h
> --- a/xen/include/public/arch-x86/hvm/save.h Thu Dec 09 22:33:02 2010 +0800
> +++ b/xen/include/public/arch-x86/hvm/save.h Thu Dec 09 22:33:06 2010 +0800
> @@ -265,6 +265,7 @@ struct hvm_hw_lapic {
> uint64_t apic_base_msr;
> uint32_t disabled; /* VLAPIC_xx_DISABLED */
> uint32_t timer_divisor;
> + uint64_t tdt_msr;
> };
Is this backward compatible with old HVM save images?
We ought to support extending the size of existing HVM save structures, but
I'm not sure that we do. Tim?
-- Keir
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