linux-kernel - Re: [PATCH] xen: enable XEN_UNPOPULATED

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <203ec9a5-01cc-4d5a-bb47-054d4a7f41a3@suse.com>
Date: Wed, 14 May 2025 17:55:14 +0200
From: Jürgen Groß <jgross@...e.com>
To: Roger Pau Monne <roger.pau@...rix.com>, xen-devel@...ts.xenproject.org,
 linux-kernel@...r.kernel.org
Cc: jason.andryuk@....com, Stefano Stabellini <sstabellini@...nel.org>,
 Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>
Subject: Re: [PATCH] xen: enable XEN_UNPOPULATED_ALLOC as part of xen.config

On 14.05.25 11:20, Roger Pau Monne wrote:
> PVH dom0 is useless without XEN_UNPOPULATED_ALLOC, as otherwise it will
> very likely balloon out all dom0 memory to map foreign and grant pages.
> 
> Enable it by default as part of xen.config.  This also requires enabling
> MEMORY_HOTREMOVE and ZONE_DEVICE.
> 
> Signed-off-by: Roger Pau Monné <roger.pau@...rix.com>

Reviewed-by: Juergen Gross <jgross@...e.com>


Juergen

Download attachment "OpenPGP_0xB0DE9DD628BF132F.asc" of type "application/pgp-keys" (3684 bytes)

Download attachment "OpenPGP_signature.asc" of type "application/pgp-signature" (496 bytes)