From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: KVM Nested L2 guest startup problems Date: Fri, 02 May 2014 11:53:33 +0200 Message-ID: <53636B1D.8030405@redhat.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit To: Hu Yaohui , kvm , "linux-kernel@vger.kernel.org" Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org Il 02/05/2014 03:43, Hu Yaohui ha scritto: > Hi all, > I have a problem running the latest version of kvm with nested configuration. > I used to run it with kernel 3.2.2 both for L0 and L1, which works perfectly. > When I change my L0 to kernel 3.10.36, L1 to kernel 3.12.10. > When I start L2 guest in L1 with qemu-kvm. I get the following error > from the qemu-kvm. Try upgrading L0 to a more recent kernel, 3.13 should be enough. Paolo > > KVM: entry failed, hardware error 0x0 > EAX=00000000 EBX=00000000 ECX=00000000 EDX=00000623 > ESI=00000000 EDI=00000000 EBP=00000000 ESP=00000000 > EIP=0000e05b EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 > ES =0000 00000000 0000ffff 00009300 > CS =f000 000f0000 0000ffff 00009b00 > SS =0000 00000000 0000ffff 00009300 > DS =0000 00000000 0000ffff 00009300 > FS =0000 00000000 0000ffff 00009300 > GS =0000 00000000 0000ffff 00009300 > LDT=0000 00000000 0000ffff 00008200 > TR =0000 00000000 0000ffff 00008b00 > GDT= 00000000 0000ffff > IDT= 00000000 0000ffff > CR0=60000010 CR2=00000000 CR3=00000000 CR4=00000000 > DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 > DR3=0000000000000000 > DR6=00000000ffff0ff0 DR7=0000000000000400 > EFER=0000000000000000 > Code=00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <2e> > 66 83 3e 24 d3 00 0f 85 e2 e5 31 c0 8e d0 66 bc 00 70 00 00 66 ba 4c > 28 0f 00 e9 07 e5 > > > In L0, the kernel gives me error like: > > [310681.735709] nested_vmx_exit_handled failed vm entry 7 > > > I am wondering anyone has met the similar problem.