Re: [RFC PATCH v2 12/20] objtool: Warn about non __ro_after_init static key usage in .noinstr
From: Valentin Schneider <vschneid@redhat.com>
Date: 2023-07-31 11:19:46
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On 28/07/23 11:02, Josh Poimboeuf wrote:
On Thu, Jul 20, 2023 at 05:30:48PM +0100, Valentin Schneider wrote:quoted
Later commits will depend on having no runtime-mutable text in early entry code. (ab)use the .noinstr section as a marker of early entry code and warn about static keys used in it that can be flipped at runtime.Similar to my comment on patch 13, this could also use a short justification for adding the feature, i.e. why runtime-mutable text isn't going to be allowed in .noinstr. Also, please add a short description of the warning (and why it exists) to tools/objtool/Documentation/objtool.txt.
I had missed this, thanks for the pointer.
-- Josh