Re: [patch] x86_32: use 8 IPI vectors for tlb flush (as x86_64)

Ingo Molnar
2009-02-03T05:46:27Z

* Frederik Deweerdt <frederik.deweerdt@xprog.eu> wrote:

> Hi,
>
> The following patch allows using 8 different IPI vectors on ia32 for tlb
> flushes, this reduces the contention on the tlbstate_lock. It also makes
> the 32 bits version closer to the 64 bits version.

This was done recently :-(

Are you aware of the x86 development tree? It's included in the -tip tree
and can be found at:

http://people.redhat.com/mingo/tip.git/README

Credit goes to Tejun Heo who unified the 32-bit and 64-bit TLB code (which
also means 32-bit uses the 8 IPI vectors) - the code is now all in
arch/x86/mm/tlb.c.

Ingo