From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Morris Subject: Re: [PATCH 3/5] Add the ability to lock down access to the running kernel image Date: Fri, 7 Apr 2017 08:45:52 +1000 (AEST) Message-ID: References: <149148299794.3427.549144000807596903.stgit@warthog.procyon.org.uk> <149148301242.3427.10901430670266893587.stgit@warthog.procyon.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Return-path: In-Reply-To: <149148301242.3427.10901430670266893587.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: David Howells Cc: ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org, linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-efi@vger.kernel.org On Thu, 6 Apr 2017, David Howells wrote: > Provide a single call to allow kernel code to determine whether the system > should be locked down, thereby disallowing various accesses that might > allow the running kernel image to be changed including the loading of > modules that aren't validly signed with a key we recognise, fiddling with > MSR registers and disallowing hibernation, > > Signed-off-by: David Howells Acked-by: James Morris -- James Morris