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| author |   Juergen Gross <jgross@suse.com> | 2018-02-01 13:40:19 +0100 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2018-02-06 09:37:18 +0100 |
| commit | 4f277295e54c5b7340e48efea3fc5cc21a2872b7 (patch) | |
| tree | c0afd5986abcc7183cf4253a578e7a732753f7d8 /drivers/xen | |
| parent | Merge branch 'master' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/torvalds/linux (diff) | |
| download | linux-dev-4f277295e54c5b7340e48efea3fc5cc21a2872b7.tar.xz linux-dev-4f277295e54c5b7340e48efea3fc5cc21a2872b7.zip | |
x86/xen: init %gs very early to avoid page faults with stack protector
When running as Xen pv guest %gs is initialized some time after
C code is started. Depending on stack protector usage this might be
too late, resulting in page faults.
So setup %gs and MSR_GS_BASE in assembly code already.
Cc: stable@vger.kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Tested-by: Chris Patterson <cjp256@gmail.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'drivers/xen')
0 files changed, 0 insertions, 0 deletions