On Tue, 2018-01-16 at 08:01 +0000, Chris Paterson wrote: [...]
Meltdown: - arm 32-bit: Not affected? (ARM reports that only the Cortex-A75 is affected, but I haven't seen information from other architecture licensees.)
ARM also lists that meltdown subvariant '3a' affects some arm 32-bit processors [1], but say that "In general, it is not believed that software mitigations for this issue are necessary".
The whitepaper ARM link to [2] implies that ARM don't think this is an issue worth worrying about as the information that can be obtained from the system registers is "not material".
Have you heard/seen anything to contradict this statement?
No I haven't.
[...]
Will you be keeping an eye on Spectre patches on behalf of CIP as part of your maintainer role? I guess you may be in the loop a bit more than the rest of us?
I will look at the mitigations as they land upstream, but I still think these are low priority security issues for CIP.
Ben.
-- Ben Hutchings Software Developer, Codethink Ltd.