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Re: [PATCH v3] Use EfiACPIReclaimMemory for ESRT
- To: Demi Marie Obenour <demi@xxxxxxxxxxxxxxxxxxxxxx>, Henry Wang <Henry.Wang@xxxxxxx>, Julien Grall <julien@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 8 Dec 2022 09:49:53 +0100
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- Cc: Ard Biesheuval <ardb@xxxxxxxxxx>, Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>, Xen developer discussion <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 08 Dec 2022 08:50:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 07.12.2022 23:42, Demi Marie Obenour wrote:
> A previous patch tried to get Linux to use the ESRT under Xen if it is
> in memory of type EfiRuntimeServicesData. However, EfiRuntimeServices*
> memory needs to be included in the EFI page tables, so it is best to
> minimize the amount of memory of this type. Since EFI runtime services
> do not need access to the ESRT, EfiACPIReclaimMemory is a better choice.
>
> Link:
> https://lists.xenproject.org/archives/html/xen-devel/2022-09/msg01365.html
> Fixes: dc7da0874ba4 ("EFI: preserve the System Resource Table for dom0")
> Signed-off-by: Demi Marie Obenour <demi@xxxxxxxxxxxxxxxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
> Should this be included in 4.17? It is a bug fix for a feature new to
> 4.17, so I suspect yes, but it is ultimately up to Henry Wang. The code
> is identical to v2, but I have improved the commit message.
It may be too late now, looking at the state of the tree. Henry, Julien?
Jan
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