emulators/xen-kernel: fix foreign mappings

[royger]

Summary

Backport upstream patch to fix foreign mappings

[royger]

Ping? This is an almost trivial change, since it's a straight backport from an upstream commit.

[royger]

Hello, can I please get this approved?

This is currently blocking Xen from working properly on Intel hardware, and as said above it's just a backport from an upstream commit that has been reviewed and already committed upstream.

[tobik]

In D21028#457950, @royger wrote:

Hello, can I please get this approved?

This is currently blocking Xen from working properly on Intel hardware, and as said above it's just a backport from an upstream commit that has been reviewed and already committed upstream.

If all you need is a ports committer's approval, this is

Approved by:	ports (tobik)

[royger]

tyvm!