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Re: [Qemu-devel] VM can not boot after commit 235e898
From: |
Gleb Natapov |
Subject: |
Re: [Qemu-devel] VM can not boot after commit 235e898 |
Date: |
Thu, 25 Jul 2013 14:30:44 +0300 |
On Wed, Jul 24, 2013 at 10:25:49PM +0200, Alexander Graf wrote:
> On 07/24/2013 06:53 PM, Gleb Natapov wrote:
> >On Wed, Jul 24, 2013 at 06:26:41PM +0200, Alexander Graf wrote:
> >>>before. Are you saying configuring BIOS memslot differently solves the
> >>>problem?
> >>Git bisect pointed to the commit mentioned in this email. The
> >>following patch also gets me a working guest again:
> >>
> >>diff --git a/kvm-all.c b/kvm-all.c
> >>index 4fb4ccb..deca9e5 100644
> >>--- a/kvm-all.c
> >>+++ b/kvm-all.c
> >>@@ -1455,7 +1455,7 @@ int kvm_init(void)
> >> s->irq_set_ioctl = KVM_IRQ_LINE_STATUS;
> >> }
> >>
> >>-#ifdef KVM_CAP_READONLY_MEM
> >>+#if 0 //def KVM_CAP_READONLY_MEM
> >> kvm_readonly_mem_allowed =
> >> (kvm_check_extension(s, KVM_CAP_READONLY_MEM)> 0);
> >> #endif
> >>
> >Can you disable emulate_invalid_state on 3.7?
>
> I could only find emulate_invalid_guest_state. I suppose you mean
> that one? :)
>
That one will do :)
> $ rmmod kvm-intel
> $ modprobe kvm-intel emulate_invalid_guest_state=n
> $ ./x86_64-softmmu/qemu-system-x86_64 -nographic -kernel
> /boot/vmlinuz -append console=ttyS0 -bios pc-bios/bios.bin
> -enable-kvm
> QEMU 1.5.50 monitor - type 'help' for more information
> (qemu)
> KVM: entry failed, hardware error 0x80000021
>
Yeah, emulate_invalid_guest_state=0 was broken for a while. Can you try
applying a4d3326c2de46fd7bcc47d1e8786efccfc152f81 on top of 3.7
and try again with emulate_invalid_guest_state=0?
> >What happens on upstream kernel
> >(works for me obviously :)).
>
> kvm-kmod from 3.9 works.
>
Doing backwards bisect to see where it was fixed would be interesting.
--
Gleb.
- Re: [Qemu-devel] VM can not boot after commit 235e898, Alexander Graf, 2013/07/24
- Re: [Qemu-devel] VM can not boot after commit 235e898, Paolo Bonzini, 2013/07/24
- Re: [Qemu-devel] VM can not boot after commit 235e898, Gleb Natapov, 2013/07/24
- Re: [Qemu-devel] VM can not boot after commit 235e898, Alexander Graf, 2013/07/24
- Re: [Qemu-devel] VM can not boot after commit 235e898, Gleb Natapov, 2013/07/24
- Re: [Qemu-devel] VM can not boot after commit 235e898, Alexander Graf, 2013/07/24
- Re: [Qemu-devel] VM can not boot after commit 235e898, Gleb Natapov, 2013/07/24
- Re: [Qemu-devel] VM can not boot after commit 235e898, Alexander Graf, 2013/07/24
- Re: [Qemu-devel] VM can not boot after commit 235e898,
Gleb Natapov <=
- Re: [Qemu-devel] VM can not boot after commit 235e898, Andreas Färber, 2013/07/24