RE: [Xen-devel] [VTD][PATCH] Fix ISA IRQ alias issue

["Han, Weidong" <weidong.han@xxxxxxxxx>]

This patch doesn't change EOI of PCI-ISA IRQs via IO-APIC, it just uses
a separate function to handle EOI of PCI-ISA IRQs via the PIC. Without
this patch, assigning multiple devices to guest which uses PIC maybe
results in disabling the IRQ.

-- Weidong

Keir Fraser wrote:
> A concerning amount of code churn and I'm not clear it works for EOI
> of PCI-ISA IRQs via the IO-APIC. This probably isn't for 3.2.0.
> 
>  -- Keir
> 
> On 15/11/07 06:32, "Han, Weidong" <weidong.han@xxxxxxxxx> wrote:
> 
>> When assign multiple devices to guest which uses PIC, ISA IRQ alias
>> may occur. This patch splits ISA IRQ and GSI eoi function. In ISA
>> IRQ eoi function, searches all assigned mirqs and does eoi for the
>> corresponding mirqs which match the eoi ISA IRQ. Therefore fix ISA
>> IRQ alias issue. 
>> 
>> 
>> Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-devel
> 
> 
> 
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