linux-kernel - Re: patch kvm-add-vt-x-machine-check-support.patch added to 2.6.30-stable tree

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Date:	Tue, 30 Jun 2009 16:42:06 -0700
From:	Greg KH <gregkh@...e.de>
To:	Stefan Lippers-Hollmann <s.L-H@....de>
Cc:	linux-kernel@...r.kernel.org, ak@...ux.intel.com, avi@...hat.com,
	ying.huang@...el.com, stable@...nel.org
Subject: Re: patch kvm-add-vt-x-machine-check-support.patch added to
	2.6.30-stable tree

On Wed, Jul 01, 2009 at 12:53:37AM +0200, Stefan Lippers-Hollmann wrote:
> Hi
> 
> On Wednesday 01 July 2009, gregkh@...e.de wrote:
> > This is a note to let you know that we have just queued up the patch titled
> > 
> >     Subject: KVM: Add VT-x machine check support
> > 
> > to the 2.6.30-stable tree.  Its filename is
> > 
> >     kvm-add-vt-x-machine-check-support.patch
> > 
> > A git repo of this tree can be found at 
> >     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> > 
> > 
> > From a0861c02a981c943573478ea13b29b1fb958ee5b Mon Sep 17 00:00:00 2001
> > From: Andi Kleen <ak@...ux.intel.com>
> > Date: Mon, 8 Jun 2009 17:37:09 +0800
> > Subject: KVM: Add VT-x machine check support
> 
> This patch fails to compile if applied to 2.6.30 + current stable queue.
> 
> arch/x86/kvm/vmx.c: In function 'vmx_vcpu_run':
> arch/x86/kvm/vmx.c:3573: error: 'exit_intr_info' undeclared (first use in this function)
> arch/x86/kvm/vmx.c:3573: error: (Each undeclared identifier is reported only once
> arch/x86/kvm/vmx.c:3573: error: for each function it appears in.)
> make[4]: *** [arch/x86/kvm/vmx.o] Error 1
> make[3]: *** [arch/x86/kvm] Error 2
> make[3]: *** Waiting for unfinished jobs....
> 
> It seems to depend on the code refactoring introduced by 
> 
> From 7b4a25cb296e2a73d2e87a4af65361d45d450a27 Mon Sep 17 00:00:00 2001
> From: Gleb Natapov <gleb@...hat.com>
> Date: Mon, 30 Mar 2009 16:03:08 +0300
> Subject: KVM: VMX: Fix handling of a fault during NMI unblocked due to IRET
> 
> Bit 12 is undefined in any of the following cases:
>  If the VM exit sets the valid bit in the IDT-vectoring information field.
>  If the VM exit is due to a double fault.
> 
> Signed-off-by: Gleb Natapov <gleb@...hat.com>
> Signed-off-by: Avi Kivity <avi@...hat.com>
> 
> and followed up by the code movement in
> 
> From 20f65983e30f222e5383f77206e3f571d1d64610 Mon Sep 17 00:00:00 2001
> From: Gleb Natapov <gleb@...hat.com>
> Date: Mon, 11 May 2009 13:35:55 +0300
> Subject: KVM: Move "exit due to NMI" handling into vmx_complete_interrupts()
> 
> To save us one reading of VM_EXIT_INTR_INFO.
> 
> Signed-off-by: Gleb Natapov <gleb@...hat.com>
> Signed-off-by: Avi Kivity <avi@...hat.com>

Thanks, I was building without kvm enabled in my configs and missed this
one.

I've added these two other patches and everything looks better.

greg k-h
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