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SubjectRe: [patch 47/60] x86/ldt: Map LDT entries into fixmap
On Mon, Dec 4, 2017 at 6:07 AM, Thomas Gleixner <> wrote:
> From: Thomas Gleixner <>
> 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.


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