Re: [Xen-devel] [PATCH v2] x86/xen: init %gs very early to avoid page faults with stack protector

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 02/01/2018 07:40 AM, Juergen Gross wrote:
> 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@xxxxxxxxxxxxxxx
> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>



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