Messages in this thread | | | Subject | Re: [RFC 08/17] x86/asm/64: De-Xen-ify our NMI code | From | Juergen Gross <> | Date | Fri, 8 Sep 2017 06:26:46 +0200 |
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On 07/09/17 20:38, Andy Lutomirski wrote: > On Thu, Sep 7, 2017 at 2:34 AM, Juergen Gross <jgross@suse.com> wrote: >> On 06/09/17 23:36, Andy Lutomirski wrote: >>> Xen PV is fundamentally incompatible with our fancy NMI code: it >>> doesn't use IST at all, and Xen entries clobber two stack slots >>> below the hardware frame. >>> >>> Drop Xen PV support from our NMI code entirely. >>> >>> XXX: Juergen: could you write and test the tiny patch needed to >>> make Xen PV have a xen_nmi entry that handles NMIs? I don't know >>> how to test it. >> >> You mean something like the attached one? > > Yes. Mind if I add it to my series?
Go ahead!
Juergen
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