| From | Andy Lutomirski <> | Date | Mon, 4 Dec 2017 14:33:06 -0800 | Subject | Re: [patch 47/60] x86/ldt: Map LDT entries into fixmap |
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On Mon, Dec 4, 2017 at 6:07 AM, Thomas Gleixner <tglx@linutronix.de> wrote: > From: Thomas Gleixner <tglx@linutronix.de> > > LDT is not really commonly used on 64bit so the overhead of populating the > fixmap entries on context switch for the rare LDT syscall users is a > reasonable trade off vs. having extra dynamically managed mapping space per > process. >
Hmm, I wonder just how slow this is. It might be okay. It's certainly not the way I imagined it working.
--Andy
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