x86/vdso: On timens page fault prefault also VVAR page

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As timens page has offsets to data on VVAR page VVAR is going
to be accessed shortly. Set it up with timens in one page fault
as optimization.

Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Co-developed-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-26-dima@arista.com

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Dmitry Safonov 2019-11-12 01:27:14 +00:00 • committed by Thomas Gleixner

parent af34ebeb86

commit e6b28ec65b

1 changed files with 16 additions and 1 deletions

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arch/x86/entry/vdso/vma.c

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