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Re: [Xen-devel] [PATCH] ioemu: fix INTx disable bit in MSI-INTx translat

To: Qing He <qing.he@xxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH] ioemu: fix INTx disable bit in MSI-INTx translation
From: Yuji Shimada <shimada-yxb@xxxxxxxxxxxxxxx>
Date: Thu, 16 Apr 2009 17:44:26 +0900
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On Wed, 15 Apr 2009 21:40:52 +0800
Qing He <qing.he@xxxxxxxxx> wrote:

> Fix the bug introduced in commit 8c771eb6: when msi-intx
> translation is enabled, int disable bit in PCI_COMMAND is set.
> This approach has two issues:
>     1. for some (buggy) devices, set INTx bit will also disable
>        MSI so that MSI doesn't work any more.
>     2. it's never re-enabled when msi translation is turned off.
>        If the guest uses INTx, it can't receive any interrupts
>        from then.
> This patch leaves INTx disable bit unset if MSI-INTx translation
> is used.

I have sent the patch to fix the issue that you pointed out.

The following patch is.

The patch has already applied in commit 

Your changeset seem to be old.
Could you test the latest qemu-xen?

Yuji Shimada

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