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Re: [PATCH for-4.19 v2] docs/arm: Document where Xen should be loaded in memory
- To: Julien Grall <julien@xxxxxxx>
- From: Henry Wang <Henry.Wang@xxxxxxx>
- Date: Wed, 25 Oct 2023 07:47:45 +0000
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- Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <jgrall@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Bertrand Marquis <Bertrand.Marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Wed, 25 Oct 2023 07:48:12 +0000
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- Thread-topic: [PATCH for-4.19 v2] docs/arm: Document where Xen should be loaded in memory
Hi Julien,
> On Oct 24, 2023, at 18:28, Julien Grall <julien@xxxxxxx> wrote:
>
> From: Julien Grall <jgrall@xxxxxxxxxx>
>
> In commit 9d267c049d92 ("xen/arm64: Rework the memory layout"),
> we decided to require Xen to be loaded below 2 TiB to simplify
> the logic to enable the MMU. The limit was decided based on
> how known platform boot plus some slack.
>
> We had a recent report that this is not sufficient on the AVA
> platform with a old firmware [1]. But the restriction is not
> going to change in Xen 4.18. So document the limit clearly
> in docs/misc/arm/booting.txt.
>
> [1] https://lore.kernel.org/20231013122658.1270506-3-leo.yan@xxxxxxxxxx
>
> Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx>
> Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
Release-acked-by: Henry Wang <Henry.Wang@xxxxxxx>
Kind regards,
Henry
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