Lv Zheng c04e1fb439 ACPICA: Tables: Enable both 32-bit and 64-bit FACS ... ACPICA commit f7b86f35416e3d1f71c3d816ff5075ddd33ed486 The following commit is reported to have broken s2ram on some platforms: Commit: 0249ed2444 ACPICA: Add option to favor 32-bit FADT addresses. The platform reports 2 FACS tables (which is not allowed by ACPI specification) and the new 32-bit address favor rule forces OSPMs to use the FACS table reported via FADT's X_FIRMWARE_CTRL field. The root cause of the reported bug might be one of the followings: 1. BIOS may favor the 64-bit firmware waking vector address when the version of the FACS is greater than 0 and Linux currently only supports resuming from the real mode, so the 64-bit firmware waking vector has never been set and might be invalid to BIOS while the commit enables higher version FACS. 2. BIOS may favor the FACS reported via the "FIRMWARE_CTRL" field in the FADT while the commit doesn't set the firmware waking vector address of the FACS reported by "FIRMWARE_CTRL", it only sets the firware waking vector address of the FACS reported by "X_FIRMWARE_CTRL". This patch excludes the cases that can trigger the bugs caused by the root cause 2. There is no handshaking mechanism can be used by OSPM to tell BIOS which FACS is currently used. Thus the FACS reported by "FIRMWARE_CTRL" may still be used by BIOS and the 0 value of the 32-bit firmware waking vector might trigger such failure. This patch tries to favor 32bit FACS address in another way where both the FACS reported by "FIRMWARE_CTRL" and the FACS reported by "X_FIRMWARE_CTRL" are loaded so that further commit can set firmware waking vector in the both tables to ensure we can exclude the cases that trigger the bugs caused by the root cause 2. The exclusion is split into 2 commits as this commit is also useful for dumping more ACPI tables, it won't get reverted when such exclusion is no longer necessary. Lv Zheng. Link: https://bugzilla.kernel.org/show_bug.cgi?id=74021 Link: https://github.com/acpica/acpica/commit/f7b86f35 Cc: 3.14.1+ <stable@vger.kernel.org> # 3.14.1+ Reported-and-tested-by: Oswald Buddenhagen <ossi@kde.org> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2015-07-01 23:17:52 +02:00
..
acpi	ACPICA: Tables: Enable both 32-bit and 64-bit FACS	2015-07-01 23:17:52 +02:00
asm-generic	TTY/Serial patches for 4.1-rc1	2015-04-21 09:33:10 -07:00
clocksource
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2015-04-15 10:42:15 -07:00
drm	Merge tag 'topic/drm-misc-2015-04-15' of git://anongit.freedesktop.org/drm-intel into drm-next	2015-04-16 08:34:24 +10:00
dt-bindings	Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma	2015-04-24 09:49:37 -07:00
keys
kvm	KVM/ARM changes for v4.1:	2015-04-07 18:09:20 +02:00
linux	Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-05-09 14:59:05 -07:00
math-emu
media	Merge branch 'patchwork' into v4l_for_linus	2015-04-21 06:12:35 -03:00
memory
misc
net	net/bonding: Make DRV macros private	2015-04-26 22:59:53 -04:00
pcmcia
ras
rdma	IB/core: Fix unaligned accesses	2015-05-05 13:21:27 -04:00
rxrpc
scsi	SCSI: add 1024 max sectors black list flag	2015-04-27 09:38:06 -07:00
soc
sound	ASoC: Fixes for v4.1	2015-04-30 19:08:06 +02:00
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-04-24 10:22:09 -07:00
trace	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
uapi	RDMA/core: Enable the iWarp Port Mapper to provide the actual address of the connecting peer to its clients	2015-05-05 09:18:01 -04:00
video	fbdev changes for v4.1	2015-04-20 15:16:25 -07:00
xen	xen: Suspend ticks on all CPUs during suspend	2015-04-29 17:10:05 +01:00
Kbuild