Re: [PATCH] efivarfs: Implement exclusive access for {get,set}_variable

Re: [PATCH] efivarfs: Implement exclusive access for {get,set}_variable

[Greg KH]

On Thu, Oct 11, 2012 at 02:42:36PM +0100, Matt Fleming wrote:
> On Thu, 2012-10-11 at 21:19 +0800, Jeremy Kerr wrote:
> > Currently, efivarfs does not enforce exclusion over the get_variable and
> > set_variable operations. Section 7.1 of UEFI requires us to only allow a
> > single processor to enter {get,set}_variable services at once.
> > 
> > This change acquires the efivars->lock over calls to these operations
> > from the efivarfs paths.
> > 
> > Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com>
> > 
> > ---
> >  drivers/firmware/efivars.c |   68 +++++++++++++++++++++++--------------
> >  1 file changed, 43 insertions(+), 25 deletions(-)
> 
> Thanks, applied to 'next'.

Should this be backported to the stable kernels?

thanks,

greg k-h

Re: [PATCH] efivarfs: Implement exclusive access for {get,set}_variable

[Jeremy Kerr]

Hi Greg,

> Should this be backported to the stable kernels?

No, the efivarfs code that this touches was only recently committed; it 
won't be in any of the stable series.

Cheers,


Jeremy

--
To unsubscribe from this list: send the line "unsubscribe linux-efi" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html