CVS commit: src/sys/arch/amd64/amd64

["Maxime Villard" <maxv%netbsd.org@localhost>]

Module Name:    src
Committed By:   maxv
Date:           Sat Oct 28 20:06:31 UTC 2017

Modified Files:
        src/sys/arch/amd64/amd64: locore.S

Log Message:
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.