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Re: [Xen-devel] NMI delivery not correctly working
| To: | Christoph Egger <Christoph.Egger@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] NMI delivery not correctly working |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Tue, 24 Jul 2007 18:07:53 +0100 |
| Delivery-date: | Tue, 24 Jul 2007 10:05:42 -0700 |
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| In-reply-to: | <200707241747.23720.Christoph.Egger@xxxxxxx> |
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| Thread-topic: | [Xen-devel] NMI delivery not correctly working |
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On 24/7/07 16:47, "Christoph Egger" <Christoph.Egger@xxxxxxx> wrote: > I know, there is a line "current->nmi_masked = 0;" in do_iret() in > xen/arch/x86/x86_(32|64)/traps.c, but this is actually never called > after NMI delivery. Guests *must* use the iret hypercall when returning from their NMI handler. This is giving a virtualised equivalent of the 'NMI-blocking' latch implemented in x86 processors, which is reset by the IRET instruction. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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