Hi,
On 16/02/2022 07:20, Juergen Gross wrote:
On 15.02.22 22:13, Julien Grall wrote:
Hi Juergen,
On 03/02/2022 13:14, Juergen Gross wrote:
Add a comment to include/public/grant_table.h that GNTTABOP_transfer
is deprecated, in order to discourage new use cases.
From the commit message, it is unclear to me why we are discouraging
new use cases and indirectly encouraging current users to move away
from the feature.
Patch #1 seems to imply this is because the feature is not present in
Linux upstream. But I don't think this is a sufficient reason to
deprecate a feature.
A more compelling reason would be that the feature is broken and too
complex to fix it.
So can you provide more details?
It is a feature available for PV domains only, and it is very complex
and hasn't been tested for ages.
Right. To reply to Jan's e-mail here, shouldn't we also de-support
(either completely or security) in this case?
My concern here is you wrote this code has been untested for ages (not
clear how long) and complex. So potentially this means there are
security issues in it.
Cheers,
--
Julien Grall
