linux-kernel - [RFC][PATCH 00/10] x86/mm/cpa: Various fixes and improvements

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Date:   Mon, 03 Dec 2018 18:03:43 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     dave.hansen@...el.com, luto@...nel.org, peterz@...radead.org
Cc:     x86@...nel.org, Tom.StDenis@....com, linux-kernel@...r.kernel.org
Subject: [RFC][PATCH 00/10] x86/mm/cpa: Various fixes and improvements

With exception of the very first patch, this whole series is probablt RFC at this point.

(and thanks to sending that earlier email saying that I was stumped by this crap,
 I instantly spotted my problem)

Dave, I didn't address that tlbinv(0) point you made, mostly because I didn't
have a good answer.

These patches get rid of around ~40 lines of pageattr.c while adding smarts and
removing a few (IMO) warts. The total LoC improvement not quite as impressive
because of the additional lines of selftest.

---
 arch/x86/mm/mm_internal.h   |   2 +
 arch/x86/mm/pageattr-test.c |  31 +++--
 arch/x86/mm/pageattr.c      | 267 +++++++++++++++++++-------------------------
 arch/x86/mm/tlb.c           |   4 +-
 4 files changed, 143 insertions(+), 161 deletions(-)