From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jan Kiszka <jan.kiszka@web.de>
Subject: Re: [REGRESSION?] -no-kvm-irqchip broken with kvm.git
Date: Sun, 20 Jul 2008 21:49:18 +0200
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Cc: kvm-devel <kvm@vger.kernel.org>
To: Avi Kivity <avi@qumranet.com>
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Jan Kiszka wrote:
> Hi,
>=20
> I'm currently facing problems to get kvm working with -no-kvm-irqchip.
> It used to be fine up to kvm-71, but with latest git my Linux guest
> stalls during early boot:
>=20
> [   22.631200] Freeing unused kernel memory: 324k freed
> [   22.857098] SCSI subsystem initialized
> [   22.892601] scsi0 : ata_piix
> [   22.903604] scsi1 : ata_piix
> [   22.904473] ata1: PATA max MWDMA2 cmd 0x00000000000101f0 ctl 0x00000=
000000103f6 bmdma 0x000000000001c000 irq 14
> [   22.917692] ata2: PATA max MWDMA2 cmd 0x0000000000010170 ctl 0x00000=
00000010376 bmdma 0x000000000001c008 irq 15
>=20
> This seems to be a kernel-side issue, replacing the module set with the=

> one that came with -71 fixes the issue. Maybe due to
> vmx_complete_interrupts refactoring?

Looks like my suspect was right: Kicking vmx_complete_interrupts out of
vmx_vcpu_run makes -no-kvm-irqchip work again.

Avi, could it be that 1c0f4f5011829dac96347b5f84ba37c2252e1e08 left
do_interrupt_requests outdated behind? Or is vmx_complete_interrupts
incorrectly queuing interrupts in the -no-kvm-irqchip case?

Jan


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