From mboxrd@z Thu Jan 1 00:00:00 1970 From: Baoquan He Subject: Re: [PATCH v8 0/3] x86/boot/KASLR: Parse ACPI table and limit kaslr in immovable memory Date: Tue, 6 Nov 2018 22:07:31 +0800 Message-ID: <20181106140731.GO27491@MiWiFi-R3L-srv> References: <20181013220541.GI31650@zn.tnic> <20181015005035.z3xym6nx43hogdge@gabell> <20181016151353.punyk7exekut2543@gabell> <20181016191113.GI5212@zn.tnic> <20181016195429.tovdgqq77gz3eek2@gabell> <20181016195902.GK5212@zn.tnic> <20181022154204.kagmdb55jtoez4ca@gabell> <20181025103345.GF14020@nazgul.tnic> <20181025134050.ggiir77ehntikbwg@gabell> <20181106121023.GF13712@zn.tnic> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20181106121023.GF13712@zn.tnic> Sender: linux-kernel-owner@vger.kernel.org To: Masayoshi Mizuma , Borislav Petkov Cc: Ingo Molnar , Thomas Gleixner , Chao Fan , linux-kernel@vger.kernel.org, x86@kernel.org, linux-efi@vger.kernel.org, linux-acpi@vger.kernel.org, mingo@redhat.com, hpa@zytor.com, keescook@chromium.org, rjw@rjwysocki.net, lenb@kernel.org, ard.biesheuvel@linaro.org, indou.takao@jp.fujitsu.com, caoj.fnst@cn.fujitsu.com List-Id: linux-acpi@vger.kernel.org On 11/06/18 at 01:10pm, Borislav Petkov wrote: > > I have another idea to solve this issue. Adding a SRAT parsing code > > to arch/x86/mm/kaslr.c. It is useful for both EFI and BIOS and > > also we don't need a new kernel parameter... > > Dose the idea make sense? > > The more automatic stuff we do and we don't have to involve the user, > the better. > > However, lemme look at Chao's current patchset first - we should not go > nuts by putting SRAT parsing everywhere :) arch/x86/mm/ident_map.c is a good example, it's shared between arch/x86/boot/compressed and arch/x86/mm/init_64.c