Messages in this thread | | | Subject | Re: [RFC PATCH 1/2] x86/ibpb: Skip IBPB when we switch back to same user process | From | Arjan van de Ven <> | Date | Thu, 25 Jan 2018 11:34:13 -0800 |
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> > This patch tries to address the case when we do switch to init_mm and back. > Do you still have objections to the approach in this patch > to save the last active mm before switching to init_mm?
how do you know the last active mm did not go away and started a new process with new content? (other than taking a reference which has other side effects)
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