Matt Fleming 83e6818974 efi: Make 'efi_enabled' a function to query EFI facilities ... Originally 'efi_enabled' indicated whether a kernel was booted from EFI firmware. Over time its semantics have changed, and it now indicates whether or not we are booted on an EFI machine with bit-native firmware, e.g. 64-bit kernel with 64-bit firmware. The immediate motivation for this patch is the bug report at, https://bugs.launchpad.net/ubuntu-cdimage/+bug/1040557 which details how running a platform driver on an EFI machine that is designed to run under BIOS can cause the machine to become bricked. Also, the following report, https://bugzilla.kernel.org/show_bug.cgi?id=47121 details how running said driver can also cause Machine Check Exceptions. Drivers need a new means of detecting whether they're running on an EFI machine, as sadly the expression, if (!efi_enabled) hasn't been a sufficient condition for quite some time. Users actually want to query 'efi_enabled' for different reasons - what they really want access to is the list of available EFI facilities. For instance, the x86 reboot code needs to know whether it can invoke the ResetSystem() function provided by the EFI runtime services, while the ACPI OSL code wants to know whether the EFI config tables were mapped successfully. There are also checks in some of the platform driver code to simply see if they're running on an EFI machine (which would make it a bad idea to do BIOS-y things). This patch is a prereq for the samsung-laptop fix patch. Cc: David Airlie <airlied@linux.ie> Cc: Corentin Chary <corentincj@iksaif.net> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Olof Johansson <olof@lixom.net> Cc: Peter Jones <pjones@redhat.com> Cc: Colin Ian King <colin.king@canonical.com> Cc: Steve Langasek <steve.langasek@canonical.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Konrad Rzeszutek Wilk <konrad@kernel.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: <stable@vger.kernel.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>		2013-01-30 11:51:59 -08:00
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aacraid	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
aic7xxx	scsi: fix various printk and comment typos	2012-09-01 08:24:35 -07:00
aic7xxx_old	…
aic94xx	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
arcmsr	workqueue: deprecate flush[_delayed]_work_sync()	2012-08-20 14:51:24 -07:00
arm	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
be2iscsi	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
bfa	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
bnx2fc	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
bnx2i	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
csiostor	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
cxgbi	SCSI misc on 20120724	2012-07-24 18:11:22 -07:00
device_handler	[SCSI] scsi_dh_alua: Enable STPG for unavailable ports	2012-09-24 12:21:56 +04:00
dpt	…
fcoe	random32: rename random32 to prandom	2012-12-17 17:15:26 -08:00
fnic	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
ibmvscsi	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
isci	efi: Make 'efi_enabled' a function to query EFI facilities	2013-01-30 11:51:59 -08:00
libfc	[SCSI] libfc: fix lun reset failure bugs in fc_fcp_resp handling of FCP_RSP_INFO	2012-10-07 11:52:55 +01:00
libsas	treewide: fix typo of "suport" in various comments and Kconfig	2012-11-19 14:16:09 +01:00
lpfc	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
megaraid	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
mpt2sas	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
mpt3sas	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
mvsas	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
osd	[SCSI] osd_uld: Add osdname & systemid sysfs at scsi_osd class	2012-11-27 08:59:34 +04:00
pcmcia	…
pm8001	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
qla2xxx	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
qla4xxx	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
sym53c8xx_2	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
ufs	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
.gitignore	…
3w-9xxx.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
3w-9xxx.h	…
3w-sas.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
3w-sas.h	…
3w-xxxx.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
3w-xxxx.h	…
53c700.c	…
53c700.h	…
53c700.scr	…
53c700_d.h_shipped	…
BusLogic.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
BusLogic.h	…
FlashPoint.c	…
Kconfig	[SCSI] mpt3sas: add new driver supporting 12GB SAS	2012-12-01 10:09:17 +00:00
Makefile	[SCSI] mpt3sas: add new driver supporting 12GB SAS	2012-12-01 10:09:17 +00:00
NCR53c406a.c	…
NCR5380.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
NCR5380.h	…
NCR_D700.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
NCR_D700.h	…
NCR_Q720.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
NCR_Q720.h	…
a100u2w.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
a100u2w.h	…
a2091.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
a2091.h	…
a3000.c	…
a3000.h	…
a4000t.c	…
advansys.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
aha152x.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
aha152x.h	…
aha1542.c	treewide: Put a space between #include and FILE	2012-06-28 11:44:36 +02:00
aha1542.h	…
aha1740.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
aha1740.h	…
aic7xxx_old.c	…
atari_NCR5380.c	…
atari_scsi.c	…
atari_scsi.h	…
atp870u.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
atp870u.h	…
bvme6000_scsi.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
ch.c	…
constants.c	[SCSI] add DID_TARGET_FAILURE and DID_NEXUS_FAILURE to hostbyte_table in constants.c	2012-09-14 11:58:53 +01:00
dc395x.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
dc395x.h	…
dmx3191d.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
dpt_i2o.c	…
dpti.h	…
dtc.c	…
dtc.h	…
eata.c	…
eata_generic.h	…
eata_pio.c	…
eata_pio.h	…
esp_scsi.c	…
esp_scsi.h	…
fdomain.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
fdomain.h	…
g_NCR5380.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
g_NCR5380.h	…
g_NCR5380_mmio.c	…
gdth.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
gdth.h	gdt: remove unnecessary #defines	2012-09-01 08:43:34 -07:00
gdth_ioctl.h	…
gdth_proc.c	…
gdth_proc.h	…
gvp11.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
gvp11.h	…
hosts.c	[SCSI] Fix device removal NULL pointer dereference	2012-07-20 08:58:40 +01:00
hpsa.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
hpsa.h	…
hpsa_cmd.h	…
hptiop.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
hptiop.h	[SCSI] hptiop: Support HighPoint RR4520/RR4522 HBA	2012-11-27 08:59:43 +04:00
imm.c	…
imm.h	…
in2000.c	…
in2000.h	…
initio.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
initio.h	…
ipr.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
ipr.h	[SCSI] ipr: Driver version 2.5.4	2012-08-24 13:10:28 +04:00
ips.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
ips.h	…
iscsi_boot_sysfs.c	…
iscsi_tcp.c	[SCSI] iscsi_tcp: increase max_lun to ~0, don't care	2012-09-24 12:10:55 +04:00
iscsi_tcp.h	…
jazz_esp.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
lasi700.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
libiscsi.c	…
libiscsi_tcp.c	…
libsrp.c	…
mac53c94.c	…
mac53c94.h	…
mac_esp.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
mac_scsi.c	…
mac_scsi.h	…
megaraid.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
megaraid.h	megaraid: remove unnecessary #defines	2012-09-01 08:42:43 -07:00
mesh.c	…
mesh.h	…
mvme16x_scsi.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
mvme147.c	…
mvme147.h	…
mvumi.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
mvumi.h	[SCSI] mvumi: Add support for Marvell SAS/SATA RAID-on-Chip(ROC) 88RC9580	2012-10-07 11:34:36 +01:00
ncr53c8xx.c	…
ncr53c8xx.h	…
nsp32.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
nsp32.h	…
nsp32_debug.c	…
nsp32_io.h	…
osst.c	…
osst.h	…
osst_detect.h	…
osst_options.h	…
pas16.c	…
pas16.h	…
pmcraid.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
pmcraid.h	…
ppa.c	…
ppa.h	…
ps3rom.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
qla1280.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
qla1280.h	…
qlogicfas.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
qlogicfas408.c	…
qlogicfas408.h	…
qlogicpti.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
qlogicpti.h	…
raid_class.c	…
script_asm.pl	…
scsi.c	[SCSI] Add a report opcode helper	2012-11-13 21:11:31 -08:00
scsi.h	…
scsi_debug.c	[SCSI] scsi_debug: Fix off-by-one bug when unmapping region	2012-10-09 12:23:11 +01:00
scsi_devinfo.c	[SCSI] Disable DIF on Hitachi Ultrastar 15K300	2012-09-24 12:11:00 +04:00
scsi_error.c	[SCSI] Shorten the path length of scsi_cmd_to_driver()	2012-10-09 12:04:42 +01:00
scsi_ioctl.c	…
scsi_lib.c	Merge branch 'for-3.8/core' of git://git.kernel.dk/linux-block	2012-12-17 08:27:23 -08:00
scsi_lib_dma.c	…
scsi_logging.h	…
scsi_module.c	…
scsi_netlink.c	scsi_netlink: Remove dead and buggy code	2012-09-13 16:26:39 -04:00
scsi_pm.c	[SCSI] scsi_pm: use callbacks from dev_pm_ops for scsi devices	2012-11-30 09:26:48 +00:00
scsi_priv.h	[SCSI] async: introduce 'async_domain' type	2012-07-20 09:05:54 +01:00
scsi_proc.c	…
scsi_sas_internal.h	…
scsi_scan.c	Merge SCSI misc branch into isci-for-3.6 tag	2012-10-02 08:55:12 +01:00
scsi_sysctl.c	…
scsi_sysfs.c	[SCSI] prevent stack buffer overflow in host_reset	2012-11-30 09:08:16 +00:00
scsi_tgt_if.c	…
scsi_tgt_lib.c	…
scsi_tgt_priv.h	…
scsi_trace.c	…
scsi_transport_api.h	…
scsi_transport_fc.c	Merge branch 'for-3.6/core' of git://git.kernel.dk/linux-block	2012-08-01 09:02:41 -07:00
scsi_transport_fc_internal.h	…
scsi_transport_iscsi.c	netlink: Rename pid to portid to avoid confusion	2012-09-10 15:30:41 -04:00
scsi_transport_sas.c	[SCSI] scsi_transport_sas: add 12GB definitions for mpt3sas	2012-12-01 10:08:41 +00:00
scsi_transport_spi.c	…
scsi_transport_srp.c	IB/srp: Allow SRP disconnect through sysfs	2012-11-30 17:40:33 -08:00
scsi_transport_srp_internal.h	…
scsi_typedefs.h	…
scsicam.c	…
sd.c	[SCSI] sd: update sd to use the new pm callbacks	2012-11-30 09:28:34 +00:00
sd.h	[SCSI] sd: Implement support for WRITE SAME	2012-11-13 22:45:42 -08:00
sd_dif.c	[SCSI] sd: Avoid remapping bad reference tags	2012-09-24 12:10:59 +04:00
ses.c	…
sg.c	mm: kill vma flag VM_RESERVED and mm->reserved_vm counter	2012-10-09 16:22:19 +09:00
sgiwd93.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
sim710.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
sni_53c710.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
sr.c	…
sr.h	…
sr_ioctl.c	…
sr_vendor.c	…
st.c	[SCSI] st: remove st_mutex	2012-09-24 13:07:02 +04:00
st.h	[SCSI] st: raise device limit	2012-09-14 17:59:29 +01:00
st_options.h	…
stex.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
storvsc_drv.c	[SCSI] storvsc: Account for in-transit packets in the RESET path	2012-10-09 12:28:58 +01:00
sun3_NCR5380.c	…
sun3_scsi.c	…
sun3_scsi.h	…
sun3_scsi_vme.c	…
sun3x_esp.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
sun_esp.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
sym53c416.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
sym53c416.h	…
t128.c	…
t128.h	…
tmscsim.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
tmscsim.h	…
u14-34f.c	…
ultrastor.c	…
ultrastor.h	…
virtio_scsi.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
vmw_pvscsi.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
vmw_pvscsi.h	…
wd33c93.c	…
wd33c93.h	…
wd7000.c	…
zalon.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00
zorro7xx.c	Drivers: scsi: remove __dev* attributes.	2013-01-03 15:57:01 -08:00