| commit | f5f6a60ad52fc786c517303590f1efaea614c69b | [log] [tgz] |
|---|---|---|
| author | Jeremy Kerr <jeremy.kerr@canonical.com> | Thu Oct 11 21:19:11 2012 +0800 |
| committer | Matt Fleming <matt.fleming@intel.com> | Tue Oct 30 10:39:24 2012 +0000 |
| tree | bb8d8ed9304fea80c240273406385a4e04c2182f | |
| parent | 5ba6e2919b9e18a051e5bdd6c21f52ee4976513f [diff] |
efivarfs: Implement exclusive access for {get,set}_variable
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>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>