22 Nov
2024
22 Nov
'24
10:17 a.m.
On 21/11/24 12:21, Josh Poimboeuf wrote:
On Thu, Nov 21, 2024 at 04:51:09PM +0100, Valentin Schneider wrote:
Okay so forcing the IPI for .noinstr patching lets us get rid of all the force_ipi faff; however I would still want the special marking to tell objtool "yep we're okay with this one", and still get warnings when a new .noinstr key gets added so we double think about it.
Yeah. Though, instead of DECLARE_STATIC_KEY_FALSE_NOINSTR adding a new jump label type, it could just add an objtool annotation pointing to the key. If that's the way we're going I could whip up a patch if that would help.
Well I'm down for the approach and I'd appreciate help for the objtool side :-)
-- Josh