Re: [PATCH] KVM: SVM: fix NMI window after iret

From: Greg KH
Date: Fri Jan 17 2014 - 15:17:57 EST

On Fri, Jan 17, 2014 at 08:52:42PM +0100, Radim KrÄmÃÅ wrote:
> We should open NMI window right after an iret, but SVM exits before it.
> We wanted to single step using the trap flag and then open it.
> (or we could emulate the iret instead)
> We don't do it since commit 3842d135ff2 (likely), because the iret exit
> handler does not request an event, so NMI window remains closed until
> the next exit.
> Fix this by making KVM_REQ_EVENT request in the iret handler.
> Signed-off-by: Radim KrÄmÃÅ <rkrcmar@xxxxxxxxxx>
> ---
> (btw. kvm-unit-tests weren't executed on SVM since Nov 2010, at least)
> arch/x86/kvm/svm.c | 1 +
> 1 file changed, 1 insertion(+)


This is not the correct way to submit patches for inclusion in the
stable kernel tree. Please read Documentation/stable_kernel_rules.txt
for how to do this properly.

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