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Re: [PATCH] x86/dom0: enable pf-fixup by default for PVH dom0
- To: Roger Pau Monne <roger.pau@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Fri, 8 May 2026 11:24:41 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Teddy Astie <teddy.astie@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Fri, 08 May 2026 09:24:55 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 08.05.2026 11:09, Roger Pau Monne wrote:
> --- a/docs/misc/xen-command-line.pandoc
> +++ b/docs/misc/xen-command-line.pandoc
> @@ -849,7 +849,7 @@ Controls for how dom0 is constructed on x86 systems.
> If using this option is necessary to fix an issue, please report a bug.
>
> * The `pf-fixup` boolean is only applicable when using a PVH dom0 and
> - defaults to false.
> + defaults to true.
>
> When running dom0 in PVH mode the dom0 kernel has no way to map MMIO
> regions into its physical memory map, such mode relies on Xen dom0
> builder
While this paragraph is okay to keep as is, imo the last paragraph concerning
this option would want re-wording to reflect the changed default. Plus, as
indicated on Matrix, add a hint that people needing to use this option (in its
negative form) should report that fact (and relevant details).
Jan
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