Re: [Xen-devel] [PATCH v4 3/3] VT-d: Fix vt-d Device-TLB flush timeout issue.

["Xu, Quan" <quan.xu@xxxxxxxxx>]

On January 07, 2016 9:47 PM, <quan.xu@xxxxxxxxx> wrote:
> Jan,
> Patch 2/3 and Patch 3/3 are based on v3 (Actually they are v3's patch 1/2 and
> patch 2/2).
> We have discussed how to hide a device with pci_hide_device() when
> Device-TLB flush is error.
> 
> Now there are 2 concerns:
>       1. Hide the PCI device may break the code path. (then the pdev->domain
> is dom_xen)
>       2. Is the blew logic right?
>            --If Device-TLB flush is timeout, we'll hide the target ATS device
> and crash the domain owning this ATS device.
>              If impacted domain is hardware domain, just throw out a
> warning, instead of crash the hardware domain.
>             The hided Device will be disallowed to be further assigned to any

Sorry, just correct it. 'hided Device' -> 'hidden device'. 



> domain.
> 
> Kevin, correct me if I am wrong.
> 
> 
> Quan
> 
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