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PR/52662 CVS commit: src/sys/arch/amd64/amd64
The following reply was made to PR port-xen/52662; it has been noted by GNATS.
From: "Maxime Villard" <maxv%netbsd.org@localhost>
Subject: PR/52662 CVS commit: src/sys/arch/amd64/amd64
Date: Sat, 28 Oct 2017 20:06:31 +0000
Module Name: src
Committed By: maxv
Date: Sat Oct 28 20:06:31 UTC 2017
It appears that Xen remaps the userland %cs to 0xE033. So add it to the
checklist. Otherwise we're going through Luexit32: %fs gets reloaded,
which sets the FS.base to NULL, which will cause the thread to page-fault
next time it accesses its TLS (as seen in PR/52662).
This fix is not very clean, and it would be nice to understand why Xen
remaps %cs. But I'm committing it now anyway, so that people can test.
To generate a diff of this commit:
cvs rdiff -u -r1.138 -r1.139 src/sys/arch/amd64/amd64/locore.S
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
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