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Re: [Xen-devel] [PATCH 0/3] xen/x86: support setting dom0_mem depending on host size
- To: Stefano Stabellini <sstabellini@xxxxxxxxxx>
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Wed, 28 Nov 2018 07:58:39 +0100
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- Cc: wei.liu2@xxxxxxxxxx, konrad.wilk@xxxxxxxxxx, George.Dunlap@xxxxxxxxxxxxx, andrew.cooper3@xxxxxxxxxx, ian.jackson@xxxxxxxxxxxxx, tim@xxxxxxx, julien.grall@xxxxxxx, jbeulich@xxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 28 Nov 2018 06:58:50 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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On 27/11/2018 20:33, Stefano Stabellini wrote:
> Hi Juergen,
>
> I don't mean to scope-creep your series, and I think it is fine if you
> don't want to do it, but it would be fantastic if you took the
> opportunity to make dom0_mem common across architectures.
>
> On ARM, we parse it in xen/arch/arm/domain_build.c:parse_dom0_mem.
> I think the ARM and x86 implementations should be the same.
This should be done by someone more familiar with the ARM requirements
and internals.
A major difference between ARM and x86 seems to be the default size of
dom0: on ARM it is limited to 512MB, while on x86 it is most of the
host's memory. I guess there is a reason for that difference, but I
don't really know why.
Juergen
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