From: Marcelo Tosatti <mtosatti@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: kvm <kvm@vger.kernel.org>, Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH] KVM: nVMX: Do not emulate #UD while in guest mode
Date: Fri, 13 Mar 2015 13:44:57 -0300 [thread overview]
Message-ID: <20150313164457.GB16394@amt.cnet> (raw)
In-Reply-To: <54FDFAFB.7050901@siemens.com>
On Mon, Mar 09, 2015 at 08:56:43PM +0100, Jan Kiszka wrote:
> While in L2, leave all #UD to L2 and do not try to emulate it. If L1 is
> interested in doing this, it reports its interest via the exception
> bitmap, and we never get into handle_exception of L0 anyway.
>
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> ---
>
> Noticed while wondering where the vmmcall of a misconfigured L2 went on
> an Intel box: to nowhere. This bug caused a spurious fixup, and the
> emulator bug did not even let it trigger a vmcall vmexit.
Applied, thanks.
prev parent reply other threads:[~2015-03-13 18:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-09 19:56 [PATCH] KVM: nVMX: Do not emulate #UD while in guest mode Jan Kiszka
2015-03-13 16:44 ` Marcelo Tosatti [this message]
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