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Date:   Thu, 4 Nov 2021 17:23:04 +0100
From:   Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= 
        <marmarek@invisiblethingslab.com>
To:     Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc:     Juergen Gross <jgross@suse.com>, xen-devel@lists.xenproject.org,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        Jonathan Corbet <corbet@lwn.net>,
        Stefano Stabellini <sstabellini@kernel.org>,
        stable@vger.kernel.org
Subject: Re: [PATCH v4] xen/balloon: add late_initcall_sync() for initial
 ballooning done
Message-ID: <YYQI6NQ8eY9XtSI4@mail-itl>
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Date: Thu, 4 Nov 2021 17:23:04 +0100
From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= <marmarek@invisiblethingslab.com>
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>, xen-devel@lists.xenproject.org,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	Jonathan Corbet <corbet@lwn.net>,
	Stefano Stabellini <sstabellini@kernel.org>, stable@vger.kernel.org
Subject: Re: [PATCH v4] xen/balloon: add late_initcall_sync() for initial
 ballooning done

On Thu, Nov 04, 2021 at 11:55:34AM -0400, Boris Ostrovsky wrote:
> This appears to have noticeable effect on boot time (and boot experience =
in general).

Yes, this is kind of intentional. It avoids killing the domain ("out of
PoD memory") for the price of increased boot time. I still wonder why it
wasn't an issue before, although it could just be a race that was less
likely to loose before.

You can find some analysis of mine here:
https://lore.kernel.org/xen-devel/YXFxKC4shCATB913@mail-itl/

--=20
Best Regards,
Marek Marczykowski-G=C3=B3recki
Invisible Things Lab

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