| From | Thomas Gleixner <> | Subject | Re: [patch v12 09/13] task isolation: add preempt notifier to sync per-CPU vmstat dirty info to thread info | Date | Wed, 27 Apr 2022 09:11:41 +0200 |
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On Tue, Mar 15 2022 at 12:31, Marcelo Tosatti wrote: > If a thread has task isolation activated, is preempted by thread B, > which marks vmstat information dirty, and is preempted back in, > one might return to userspace with vmstat dirty information on the > CPU in question. > > To address this problem, add a preempt notifier that transfers vmstat dirty > information to TIF_TASK_ISOL thread flag.
How does this compile with CONFIG_KVM=n?
Thanks,
tglx
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