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Re: [PATCH v2] piix: fix regression during unplug in Xen HVM domUs


  • To: Bernhard Beschow <shentey@xxxxxxxxx>
  • From: Olaf Hering <olaf@xxxxxxxxx>
  • Date: Tue, 27 Jun 2023 13:40:28 +0200
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  • Delivery-date: Tue, 27 Jun 2023 11:40:51 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

Tue, 27 Jun 2023 10:12:50 +0000 Bernhard Beschow <shentey@xxxxxxxxx>:

> Bits 4..15 represent the BAR address, and pci_set_byte() only clears bits 
> 4..7, leaving bits 8..15 unchanged. Perhaps this causes the BAR to be moved 
> into the UHCI region? Does changing the call to pci_set_long() fix the 
> problem?

Thanks, it seems this fixes the issue. Let me verify this with a clean build.


Olaf

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