Messages in this thread | | | Date | Thu, 12 Mar 2020 11:38:24 -0700 | From | Sean Christopherson <> | Subject | Re: [PATCH v28 16/22] x86/sgx: Add a page reclaimer |
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On Fri, Mar 06, 2020 at 08:47:02PM +0200, Jarkko Sakkinen wrote: > On Thu, Mar 05, 2020 at 11:03:54AM -0800, Sean Christopherson wrote: > > We've also discussed taking a file descriptor to hold the backing, but > > unless I'm misreading the pagecache code, that doesn't solve the incorrect > > accounting problem because the current task, i.e. evicting task, would be > > charged. In other words, whether the backing is kernel or user controlled > > is purely an ABI question. > > Even if the file is owned by a different process the account happens > to "current"?
Yes. Which makes sense as files do not have a 1:1 association with tasks.
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