linux-kernel - RE: [PATCH RESEND 1/1] X86: Handle Hyper-V vmbus interrupts as special hypervisor interrupts

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Message-Id: <510242EF02000078000B96FD@nat28.tlf.novell.com>
Date:	Fri, 25 Jan 2013 07:31:43 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"KY Srinivasan" <kys@...rosoft.com>,
	"H. Peter Anvin" <hpa@...or.com>
Cc:	"olaf@...fle.de" <olaf@...fle.de>, "bp@...en8.de" <bp@...en8.de>,
	"apw@...onical.com" <apw@...onical.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH RESEND 1/1] X86: Handle Hyper-V vmbus interrupts as
 special hypervisor interrupts

>>> On 24.01.13 at 20:10, "H. Peter Anvin" <hpa@...or.com> wrote:
> I also have to point out the obvious problem with Xen masquerading as HyperV 
> without implementing the same feature set...

I can't resist to state that this is what feature bits have been
introduced for in CPUID leaves. As long as Xen's shim doesn't
advertise a feature bit it doesn't implement, all should be fine.

Jan

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