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Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity
From: |
Gabriel L. Somlo |
Subject: |
Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity |
Date: |
Thu, 30 Jan 2014 10:56:11 -0500 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Thu, Jan 30, 2014 at 12:13:59AM +0100, Alexander Graf wrote:
> Can you check whether it configures the ioapic differently?
I poked around hw/i386/kvm/ioapic.c, looking for a few good spots
to add printf statements. These should be spots where calls from
the guest are handled, not where QEMU itself sets up before starting
the guest, as I expect the latter is all the same regardless.
kvm_ioapic_set_irq() seemed like a good candidate. When starting
(without the kvm kernel-side patch), OS X logs the following, before
it hangs:
kvm_ioapic_set_irq(opaque=0x7f2480a71d10, irq=19, level=1)
kvm_ioapic_set_irq(opaque=0x7f2480a71d10, irq=16, level=1)
kvm_ioapic_set_irq(opaque=0x7f2480a71d10, irq=17, level=1)
kvm_ioapic_set_irq(opaque=0x7f2480a71d10, irq=18, level=1)
kvm_ioapic_set_irq(opaque=0x7f2480a71d10, irq=16, level=1)
Fedora (which works fine) looks like this:
kvm_ioapic_set_irq(opaque=0x7f42ced4cae0, irq=16, level=0)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=17, level=0)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=18, level=0)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=19, level=0)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=19, level=1)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=16, level=1)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=19, level=0)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=16, level=0)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=19, level=1)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=19, level=0)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=16, level=1)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=16, level=0)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=16, level=1)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=16, level=0)
kvm_ioapic_set_irq(opaque=0x7f4c5516eae0, irq=16, level=1)
... (and so on, with irq 16, alternating levels between 0 and 1).
With the kernel irqlevel patch, Fedora looks identical.
OS X (which now works), looks like this:
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=19, level=1)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=19, level=0)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=19, level=1)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=16, level=1)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=19, level=0)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=16, level=0)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=19, level=1)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=19, level=0)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=19, level=1)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=19, level=0)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=16, level=1)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=16, level=0)
kvm_ioapic_set_irq(opaque=0x7f6d27baad10, irq=16, level=1)
... (again, alternating levels and irq-16 only from here on out).
I'm not sure how useful this is, or what info from which other
kvm/ioapic method I could log during guest boot...
--G
- Re: [Qemu-devel] OSX guest support review, (continued)
- Re: [Qemu-devel] OSX guest support review, Alexander Graf, 2014/01/29
- Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity, Gabriel L. Somlo, 2014/01/29
- Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity, Michael S. Tsirkin, 2014/01/29
- Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity, Gabriel L. Somlo, 2014/01/30
- Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity, Michael S. Tsirkin, 2014/01/30
- Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity, Gabriel L. Somlo, 2014/01/30
- Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity, Michael S. Tsirkin, 2014/01/30
- Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity, Michael S. Tsirkin, 2014/01/30
- Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity, Gabriel L. Somlo, 2014/01/30
- Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity, Alexander Graf, 2014/01/29
- Re: [Qemu-devel] OSX guest vs. kvm ioapic polarity,
Gabriel L. Somlo <=
- [Qemu-devel] osx bootloader, Gabriel L. Somlo, 2014/01/28
- Re: [Qemu-devel] osx bootloader, BALATON Zoltan, 2014/01/28
- Re: [Qemu-devel] osx bootloader, Gabriel L. Somlo, 2014/01/28
- Re: [Qemu-devel] osx bootloader, BALATON Zoltan, 2014/01/29
- Re: [Qemu-devel] osx bootloader, Gabriel L. Somlo, 2014/01/29
- Re: [Qemu-devel] osx bootloader, Alexander Graf, 2014/01/29
- Re: [Qemu-devel] osx bootloader, BALATON Zoltan, 2014/01/29
- Re: [Qemu-devel] osx bootloader, BALATON Zoltan, 2014/01/31
- Re: [Qemu-devel] osx bootloader, BALATON Zoltan, 2014/01/29
- Re: [Qemu-devel] osx bootloader, Alexander Graf, 2014/01/29