From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f198.google.com (mail-wr0-f198.google.com [209.85.128.198]) by kanga.kvack.org (Postfix) with ESMTP id 874796B03BC for ; Wed, 21 Jun 2017 05:26:34 -0400 (EDT) Received: by mail-wr0-f198.google.com with SMTP id 77so15083119wrb.11 for ; Wed, 21 Jun 2017 02:26:34 -0700 (PDT) Received: from Galois.linutronix.de (Galois.linutronix.de. [2a01:7a0:2:106d:700::1]) by mx.google.com with ESMTPS id f38si17644806wra.124.2017.06.21.02.26.32 for (version=TLS1_2 cipher=AES128-SHA bits=128/128); Wed, 21 Jun 2017 02:26:33 -0700 (PDT) Date: Wed, 21 Jun 2017 11:26:29 +0200 (CEST) From: Thomas Gleixner Subject: Re: [PATCH v3 08/11] x86/mm: Disable PCID on 32-bit kernels In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Andy Lutomirski Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Borislav Petkov , Linus Torvalds , Andrew Morton , Mel Gorman , "linux-mm@kvack.org" , Nadav Amit , Rik van Riel , Dave Hansen , Arjan van de Ven , Peter Zijlstra On Tue, 20 Jun 2017, Andy Lutomirski wrote: > 32-bit kernels on new hardware will see PCID in CPUID, but PCID can > only be used in 64-bit mode. Rather than making all PCID code > conditional, just disable the feature on 32-bit builds. > > Signed-off-by: Andy Lutomirski Reviewed-by: Thomas Gleixner -- 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