Re: [PATCH 06/19] iommu/vt-d: Fix clearing real DMA device's scalable-mode context entries

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On Fri, May 06, 2022 at 08:00:44PM +0800, Kun(llfl) wrote:
> From: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> 
> ANBZ: #1105
> 
> commit 474dd1c6506411752a9b2f2233eec11f1733a099 upstream.
> 
> The commit 2b0140c69637e ("iommu/vt-d: Use pci_real_dma_dev() for mapping")
> fixes an issue of "sub-device is removed where the context entry is cleared
> for all aliases". But this commit didn't consider the PASID entry and PASID
> table in VT-d scalable mode. This fix increases the coverage of scalable
> mode.
> 
> Suggested-by: Sanjay Kumar <sanjay.k.kumar@xxxxxxxxx>
> Fixes: 8038bdb855331 ("iommu/vt-d: Only clear real DMA device's context entries")
> Fixes: 2b0140c69637e ("iommu/vt-d: Use pci_real_dma_dev() for mapping")
> Cc: stable@xxxxxxxxxxxxxxx # v5.6+

Same here, what kernels is this to be applied to, and what is the "ANBZ"
tag?

thanks,

greg k-h



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