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Re: [Xen-devel] [PATCH][v2] Hybrid extension support in Xen
| To: | Sheng Yang <sheng@xxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH][v2] Hybrid extension support in Xen |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 02 Feb 2010 14:03:31 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Tue, 02 Feb 2010 06:03:53 -0800 |
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| In-reply-to: | <201002022137.39696.sheng@xxxxxxxxxxxxxxx> |
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| Thread-index: | AcqkDRTxFsh/XwZ2T3KC4ONBicKkVQAA2s0S |
| Thread-topic: | [Xen-devel] [PATCH][v2] Hybrid extension support in Xen |
| User-agent: | Microsoft-Entourage/12.23.0.091001 |
On 02/02/2010 13:37, "Sheng Yang" <sheng@xxxxxxxxxxxxxxx> wrote: >>> 1. Enable SMP support through VCPU_OP in arch_set_info_guest(). >> >> What does that mean and why would we want it? > > It's not a good description, sorry... We need a entry address and boot up code > AP. For that purpose, I reuse VCPUOP_initialise and VCPUOP_up hypercall. The > former guest set the entry address of AP, the later one boot up them. For > this, I add some code in arch_set_info_guest() to initialize the AP(mostly > what we did after INIT-SIPI-SIPI sequence), that's what I means here... Okay, so that leads to the obvious next question: why do you want to avoid using INIT-SIPI-SIPI? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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