linux-kernel - Re: [PATCH 2/2] Revert "xen: fix p2m size in dom0 for disabled memory hotplug case"

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Date:   Tue, 23 Mar 2021 07:43:26 +0100
From:   Jürgen Groß <jgross@...e.com>
To:     Roger Pau Monne <roger.pau@...rix.com>,
        linux-kernel@...r.kernel.org
Cc:     Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Jan Beulich <jbeulich@...e.com>, xen-devel@...ts.xenproject.org
Subject: Re: [PATCH 2/2] Revert "xen: fix p2m size in dom0 for disabled memory
 hotplug case"

On 17.03.21 12:04, Roger Pau Monne wrote:
> This partially reverts commit 882213990d32fd224340a4533f6318dd152be4b2.
> 
> There's no need to special case XEN_UNPOPULATED_ALLOC anymore in order
> to correctly size the p2m. The generic memory hotplug option has
> already been tied together with the Xen hotplug limit, so enabling
> memory hotplug should already trigger a properly sized p2m on Xen PV.

Can you add some words here that XEN_UNPOPULATED_ALLOC depends on
MEMORY_HOTPLUG via ZONE_DEVICE?


Juergen

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