Re: [PATCH 1/1] x86: fix text_poke

From: Jeremy Fitzhardinge
Date: Fri Apr 25 2008 - 14:14:04 EST


Linus Torvalds wrote:
With each invocation being thousands of instructions and a cross-CPU IPI for the tlb flush, that kind of stuff adds up. We're likely talking real fractions of a second, rather than milliseconds.

Doesn't vunmap batch the cross-CPU tlb flushes to amortize the cost? Hm, no, it doesn't seem to. Oh, right, it was one of Nick's TBDs.

J
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