From: Juergen Gross <jgross@suse.com>
To: Roger Pau Monne <roger@xenproject.org>,
Roger Pau Monne <roger.pau@citrix.com>,
xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org
Cc: Yannick Martin <yannick.martin@okazoo.eu>,
Thorsten Leemhuis <regressions@leemhuis.info>,
Stefano Stabellini <sstabellini@kernel.org>,
Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Subject: Re: [PATCH] x86/xen: fix init of balloon stats for PV guests with memory != maxmem
Date: Mon, 3 Aug 2026 16:12:04 +0200 [thread overview]
Message-ID: <2d4b7ec8-7900-433a-a3b4-a5b043e55ca8@suse.com> (raw)
In-Reply-To: <20260730143548.39320-1-roger@xenproject.org>
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On 30.07.26 16:35, Roger Pau Monne wrote:
> The handling of extra memory regions done in balloon_add_regions() is not
> correct for PV guests, since the initial target is set to reflect the real
> memory the system has, not what's described on the memory map, which can be
> higher if memory != maxmem.
>
> Introduce separate logic for PV vs HVM in balloon_add_regions() and handle
> the extra region correctly by adding them to the total amount of pages,
> instead of subtracting from the current and target pages amounts.
>
> Fixes: 87af633689ce ("x86/xen: fix balloon target initialization for PVH dom0")
> Signed-off-by: Roger Pau Monné <roger@xenproject.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Juergen
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next prev parent reply other threads:[~2026-08-03 14:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-30 14:35 [PATCH] x86/xen: fix init of balloon stats for PV guests with memory != maxmem Roger Pau Monne
2026-08-03 14:12 ` Juergen Gross [this message]
2026-08-05 4:46 ` Matthias Goergens
2026-08-05 8:43 ` Roger Pau Monné
2026-08-05 9:40 ` [PATCH v2] x86/xen: fix init of balloon stats again Roger Pau Monne
2026-08-05 11:50 ` Matthias Goergens
2026-08-05 12:04 ` Juergen Gross
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