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| author | Juergen Gross <jgross@suse.com> | 2018-02-01 15:40:19 +0300 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2018-02-06 11:37:18 +0300 |
| commit | 4f277295e54c5b7340e48efea3fc5cc21a2872b7 (patch) | |
| tree | c0afd5986abcc7183cf4253a578e7a732753f7d8 /drivers/xen/acpi.c | |
| parent | ddb9e13af3bba3f8c36ccee0eb9563a82b425c12 (diff) | |
| download | linux-4f277295e54c5b7340e48efea3fc5cc21a2872b7.tar.xz | |
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/acpi.c')
0 files changed, 0 insertions, 0 deletions