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RE: [Xen-devel] [PATCH 2/2] passthrough: deliver IRQs even if bsp is hal
| To: | 'Kouya Shimura' <kouya@xxxxxxxxxxxxxx>, "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-devel] [PATCH 2/2] passthrough: deliver IRQs even if bsp is halted (support kexec/kdump on hvm) |
| From: | "Han, Weidong" <weidong.han@xxxxxxxxx> |
| Date: | Tue, 30 Jun 2009 16:53:50 +0800 |
| Accept-language: | en-US |
| Acceptlanguage: | en-US |
| Cc: | 'Keir Fraser' <keir.fraser@xxxxxxxxxxxxx> |
| Delivery-date: | Tue, 30 Jun 2009 01:56:34 -0700 |
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| Thread-topic: | [Xen-devel] [PATCH 2/2] passthrough: deliver IRQs even if bsp is halted (support kexec/kdump on hvm) |
Kouya Shimura wrote: > This patch is needed for kexec/kdump on hvm since kdump halts bsp. > > Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx> It kicks every online vcpu. The result will be more unnecessary IPIs, especially the vcpu# is big. Therefore increase cost of interrupt handling of assigned devices. Regards, Weidong _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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