Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757485AbdIILEu (ORCPT ); Sat, 9 Sep 2017 07:04:50 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:46901 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757293AbdIILEt (ORCPT ); Sat, 9 Sep 2017 07:04:49 -0400 Date: Sat, 9 Sep 2017 14:04:02 +0300 From: Dan Carpenter To: kys@microsoft.com Cc: x86@kernel.org, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, jasowang@redhat.com, tglx@linutronix.de, hpa@zytor.com, mingo@kernel.org Subject: Re: [PATCH 1/1] x86/hyper-V: Allocate the IDT entry early in boot Message-ID: <20170909105428.osqbcf4gnibobpse@mwanda> References: <20170908231557.2419-1-kys@exchange.microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170908231557.2419-1-kys@exchange.microsoft.com> User-Agent: NeoMutt/20170113 (1.7.2) X-Source-IP: userv0021.oracle.com [156.151.31.71] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 341 Lines: 11 On Fri, Sep 08, 2017 at 04:15:57PM -0700, kys@exchange.microsoft.com wrote: > From: "K. Y. Srinivasan" > > Allocate the hypervisor callback IDT entry early in the boot sequence. > I'm guessing this fixes a NULL dereference or something? The changelog doesn't really say why we are doing this. regards, dan carpenter