From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH 0/2] KVM: x86: fix deliver of SMIs to halted VCPUs Date: Tue, 13 Oct 2015 14:59:51 +0200 Message-ID: <561D0047.7020608@redhat.com> References: <1444732448-9112-1-git-send-email-pbonzini@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: rkrcmar@redhat.com, lersek@redhat.com To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Return-path: In-Reply-To: <1444732448-9112-1-git-send-email-pbonzini@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 13/10/2015 12:34, Paolo Bonzini wrote: > While SeaBIOS only uses synchronous SMI delivery through port 0xb2, > OVMF also uses APIC delivery, and it is buggy. > > This is enough to run OVMF with SMM enabled and multiple processors, > up to a UEFI shell, but it literally takes minutes to get there. > However, the same behavior is visible with KVM disabled, so it may > be a firmware bug instead. Which it was. :) http://permalink.gmane.org/gmane.comp.bios.edk2.devel/2899 Paolo