From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f170.google.com (mail-pf0-f170.google.com [209.85.192.170]) by kanga.kvack.org (Postfix) with ESMTP id CA7756B0253 for ; Mon, 25 Jan 2016 13:37:47 -0500 (EST) Received: by mail-pf0-f170.google.com with SMTP id q63so88248074pfb.1 for ; Mon, 25 Jan 2016 10:37:47 -0800 (PST) Received: from mail.kernel.org (mail.kernel.org. [198.145.29.136]) by mx.google.com with ESMTP id xu3si22168401pab.94.2016.01.25.10.37.47 for ; Mon, 25 Jan 2016 10:37:47 -0800 (PST) From: Andy Lutomirski Subject: [PATCH v2 0/3] x86/mm: INVPCID support Date: Mon, 25 Jan 2016 10:37:41 -0800 Message-Id: Sender: owner-linux-mm@kvack.org List-ID: To: x86@kernel.org, linux-kernel@vger.kernel.org Cc: Borislav Petkov , Brian Gerst , Dave Hansen , Linus Torvalds , Oleg Nesterov , "linux-mm@kvack.org" , Andrey Ryabinin , Andy Lutomirski Ingo, before applying this, please apply these two KASAN fixes: http://lkml.kernel.org/g/1452516679-32040-2-git-send-email-aryabinin@virtuozzo.com http://lkml.kernel.org/g/1452516679-32040-3-git-send-email-aryabinin@virtuozzo.com Without those fixes, this series will trigger a KASAN bug. This is a straightforward speedup on Ivy Bridge and newer, IIRC. (I tested on Skylake. INVPCID is not available on Sandy Bridge. I don't have Ivy Bridge, Haswell or Broadwell to test on, so I could be wrong as to when the feature was introduced.) I think we should consider these patches separately from the rest of the PCID stuff -- they barely interact, and this part is much simpler and is useful on its own. This is exactly identical to patches 2-4 of the PCID RFC series. Andy Lutomirski (3): x86/mm: Add INVPCID helpers x86/mm: Add a noinvpcid option to turn off INVPCID x86/mm: If INVPCID is available, use it to flush global mappings Documentation/kernel-parameters.txt | 2 ++ arch/x86/include/asm/tlbflush.h | 50 +++++++++++++++++++++++++++++++++++++ arch/x86/kernel/cpu/common.c | 16 ++++++++++++ 3 files changed, 68 insertions(+) -- 2.5.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org