From owner-freebsd-xen@freebsd.org  Fri Jan 29 14:39:12 2021
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Date: Fri, 29 Jan 2021 15:39:06 +0100
From: Roger Pau =?utf-8?B?TW9ubsOp?= <royger@FreeBSD.org>
To: freebsd-xen@freebsd.org
Cc: Michael Dexter <editor@callfortesting.org>
Subject: Disruptions to PVH dom0 in main and stable/13 branches
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Hello,

If you are not based on the main or the stable/13 branches you can
skip the email below.

There have been some bootloader changes in main and stable/13 branches
that prevented booting a FreeBSD/Xen PVH Dom0. A fix has been committed
to main and should hopefully be backported to stable/13 in due time,
it's:

b6d85a5f51e4 stand/multiboot: adjust the protocol between loader and kernel

That however will require that you also use a Xen package version
greater or equal to 4.14.1_0. I've just added those to the ports
repository:

r563208: emulators/xen-kernel,sysutils/xen-tools: update to 4.14.1

However binary packages will take some time to appear. In the mean
time, if you wish to use a Xen dom0 please make sure to run a build of
FreeBSD that has the above commit applied, and to build the Xen
packages from the ports tree yourself (while a binary one is not
available).

Sorry for the inconvenience.