From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: [GIT PULL] EFI changes for v4.4 Date: Tue, 27 Oct 2015 18:41:39 +0100 Message-ID: <20151027174139.GA12877@gmail.com> References: <1445770144-22280-1-git-send-email-matt@codeblueprint.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1445770144-22280-1-git-send-email-matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Matt Fleming Cc: Thomas Gleixner , "H . Peter Anvin" , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Borislav Petkov , Dave Hansen , Glenn P Williamson , Ravi Shankar , Ricardo Neri , Sai Praneeth Prakhya List-Id: linux-efi@vger.kernel.org * Matt Fleming wrote: > Folks, please pull the following bugfix from Sai which prevents a > kernel panic when booting an EFI machine with CONFIG_DEBUG_VIRTUAL > enabled. > > This bug was reported last year by Dave Hansen, > > https://lkml.kernel.org/r/5462999A.7090706-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org > > and since nobody else has reported it, and given that it's only > triggerable with a debug config option, I figured this should be > targeted at v4.4. > > The following changes since commit 0f96a99dab366333439e110d6ad253bc7c557c09: > > efi: Add "efi_fake_mem" boot option (2015-10-12 14:20:09 +0100) > > are available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git tags/efi-next > > for you to fetch changes up to 2c66e24d75d424919c42288b418d2e593fa818b1: > > x86/efi: Fix kernel panic when CONFIG_DEBUG_VIRTUAL is enabled (2015-10-25 10:22:25 +0000) > > ---------------------------------------------------------------- > * Fix a kernel panic by not passing EFI virtual mapping addresses to > __pa() in the x86 pageattr code. Since these virtual addreses are > not part of the direct mapping or kernel text mapping, passing them > to __pa() will trigger a BUG_ON() when CONFIG_DEBUG_VIRTUAL is > enabled - Sai Praneeth Prakhya > > ---------------------------------------------------------------- > Sai Praneeth (1): > x86/efi: Fix kernel panic when CONFIG_DEBUG_VIRTUAL is enabled > > arch/x86/mm/pageattr.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) Pulled, thanks Matt! Ingo