Messages in this thread | | | Date | Thu, 12 Oct 2023 13:43:47 -0700 | From | Josh Poimboeuf <> | Subject | Re: [PATCH v4] x86/bugs: Add a separate config for each mitigation |
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On Thu, Oct 12, 2023 at 08:51:24PM +0200, Ingo Molnar wrote: > > Another way to avoid ifdeffery: > > > > static enum retbleed_mitigation_cmd retbleed_cmd __ro_after_init = > > IS_ENABLED(CONFIG_MITIGATION_RETBLEED) ? RETBLEED_CMD_AUTO : RETBLEED_CMD_OFF; > > I think we could make it a simple: > > static enum retbleed_mitigation_cmd retbleed_cmd __ro_after_init = IS_ENABLED(CONFIG_MITIGATION_RETBLEED); > > Because RETBLEED_CMD_AUTO && RETBLEED_CMD_OFF maps naturally to 1 and 0. > Maybe add a comment to the enum to maintain this property in the future > too.
Hm, that both obfuscates the default and makes it fragile. The fact that it would need a comment to try to prevent breaking it in the future is a clue that maybe we shouldn't do it ;-)
-- Josh
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