/* * upd6408x - NEC Electronics 3-Dimensional Y/C separation input defines * * 2006 by Hans Verkuil (hverkuil@xs4all.nl) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef _UPD64083_H_ #define _UPD64083_H_ /* There are two bits of information that the driver needs in order to select the correct routing: the operating mode and the selection of the Y input (external or internal). The first two operating modes expect a composite signal on the Y input, the second two operating modes use both the Y and C inputs. Normally YCS_MODE is used for tuner and composite inputs, and the YCNR mode is used for S-Video inputs. The external Y-ADC is selected when the composite input comes from a upd64031a ghost reduction device. If this device is not present, or the input is a S-Video signal, then the internal Y-ADC input should be used. */ /* Operating modes: */ /* YCS mode: Y/C separation (burst locked clocking) */ #define UPD64083_YCS_MODE 0 /* YCS+ mode: 2D Y/C separation and YCNR (burst locked clocking) */ #define UPD64083_YCS_PLUS_MODE 1 /* Note: the following two modes cannot be used in combination with the external Y-ADC. */ /* MNNR mode: frame comb type YNR+C delay (line locked clocking) */ #define UPD64083_MNNR_MODE 2 /* YCNR mode: frame recursive YCNR (burst locked clocking) */ #define UPD64083_YCNR_MODE 3 /* Select external Y-ADC: this should be set if this device is used in combination with the upd64031a ghost reduction device. Otherwise leave at 0 (use internal Y-ADC). */ #define UPD64083_EXT_Y_ADC (1 << 2) #endif name='id' value='bf29bddf0417a4783da3b24e8c9e017ac649326f'/>
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authorJiri Kosina <jkosina@suse.cz>2017-01-27 22:25:52 +0000
committerIngo Molnar <mingo@kernel.org>2017-01-28 09:18:56 +0100
commitbf29bddf0417a4783da3b24e8c9e017ac649326f (patch)
tree54a05a4883b73f80e4e1d8c4b15750aa01c39932 /security/loadpin/Kconfig
parent883af14e67e8b8702b5560aa64c888c0cd0bd66c (diff)
x86/efi: Always map the first physical page into the EFI pagetables
Commit: 129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode") stopped creating 1:1 mappings for all RAM, when running in native 64-bit mode. It turns out though that there are 64-bit EFI implementations in the wild (this particular problem has been reported on a Lenovo Yoga 710-11IKB), which still make use of the first physical page for their own private use, even though they explicitly mark it EFI_CONVENTIONAL_MEMORY in the memory map. In case there is no mapping for this particular frame in the EFI pagetables, as soon as firmware tries to make use of it, a triple fault occurs and the system reboots (in case of the Yoga 710-11IKB this is very early during bootup). Fix that by always mapping the first page of physical memory into the EFI pagetables. We're free to hand this page to the BIOS, as trim_bios_range() will reserve the first page and isolate it away from memory allocators anyway. Note that just reverting 129766708 alone is not enough on v4.9-rc1+ to fix the regression on affected hardware, as this commit: ab72a27da ("x86/efi: Consolidate region mapping logic") later made the first physical frame not to be mapped anyway. Reported-by: Hanka Pavlikova <hanka@ucw.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Laura Abbott <labbott@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vojtech Pavlik <vojtech@ucw.cz> Cc: Waiman Long <waiman.long@hpe.com> Cc: linux-efi@vger.kernel.org Cc: stable@kernel.org # v4.8+ Fixes: 129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode") Link: http://lkml.kernel.org/r/20170127222552.22336-1-matt@codeblueprint.co.uk [ Tidied up the changelog and the comment. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'security/loadpin/Kconfig')