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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>		12 years ago
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aacraid	Drivers: scsi: remove __dev* attributes.	12 years ago
aic7xxx	scsi: fix various printk and comment typos	13 years ago
aic7xxx_old	…
aic94xx	Drivers: scsi: remove __dev* attributes.	12 years ago
arcmsr	workqueue: deprecate flush[_delayed]_work_sync()	13 years ago
arm	Drivers: scsi: remove __dev* attributes.	12 years ago
be2iscsi	Drivers: scsi: remove __dev* attributes.	12 years ago
bfa	Drivers: scsi: remove __dev* attributes.	12 years ago
bnx2fc	Drivers: scsi: remove __dev* attributes.	12 years ago
bnx2i	Drivers: scsi: remove __dev* attributes.	12 years ago
csiostor	Drivers: scsi: remove __dev* attributes.	12 years ago
cxgbi	SCSI misc on 20120724	13 years ago
device_handler	[SCSI] scsi_dh_alua: Enable STPG for unavailable ports	13 years ago
dpt	atomic: use <linux/atomic.h>	14 years ago
fcoe	random32: rename random32 to prandom	12 years ago
fnic	Drivers: scsi: remove __dev* attributes.	12 years ago
ibmvscsi	Drivers: scsi: remove __dev* attributes.	12 years ago
isci	efi: Make 'efi_enabled' a function to query EFI facilities	12 years ago
libfc	[SCSI] libfc: fix lun reset failure bugs in fc_fcp_resp handling of FCP_RSP_INFO	13 years ago
libsas	treewide: fix typo of "suport" in various comments and Kconfig	12 years ago
lpfc	Drivers: scsi: remove __dev* attributes.	12 years ago
megaraid	Drivers: scsi: remove __dev* attributes.	12 years ago
mpt2sas	Drivers: scsi: remove __dev* attributes.	12 years ago
mpt3sas	Drivers: scsi: remove __dev* attributes.	12 years ago
mvsas	Drivers: scsi: remove __dev* attributes.	12 years ago
osd	[SCSI] osd_uld: Add osdname & systemid sysfs at scsi_osd class	12 years ago
pcmcia	module_param: make bool parameters really bool (drivers & misc)	13 years ago
pm8001	Drivers: scsi: remove __dev* attributes.	12 years ago
qla2xxx	Drivers: scsi: remove __dev* attributes.	12 years ago
qla4xxx	Drivers: scsi: remove __dev* attributes.	12 years ago
sym53c8xx_2	Drivers: scsi: remove __dev* attributes.	12 years ago
ufs	Drivers: scsi: remove __dev* attributes.	12 years ago
.gitignore	…
3w-9xxx.c	Drivers: scsi: remove __dev* attributes.	12 years ago
3w-9xxx.h	…
3w-sas.c	Drivers: scsi: remove __dev* attributes.	12 years ago
3w-sas.h	…
3w-xxxx.c	Drivers: scsi: remove __dev* attributes.	12 years ago
3w-xxxx.h	…
53c700.c	Remove all #inclusions of asm/system.h	13 years ago
53c700.h	…
53c700.scr	…
53c700_d.h_shipped	…
BusLogic.c	Drivers: scsi: remove __dev* attributes.	12 years ago
BusLogic.h	…
FlashPoint.c	…
Kconfig	[SCSI] mpt3sas: add new driver supporting 12GB SAS	12 years ago
Makefile	[SCSI] mpt3sas: add new driver supporting 12GB SAS	12 years ago
NCR53c406a.c	…
NCR5380.c	Drivers: scsi: remove __dev* attributes.	12 years ago
NCR5380.h	…
NCR_D700.c	Drivers: scsi: remove __dev* attributes.	12 years ago
NCR_D700.h	…
NCR_Q720.c	Drivers: scsi: remove __dev* attributes.	12 years ago
NCR_Q720.h	…
a100u2w.c	Drivers: scsi: remove __dev* attributes.	12 years ago
a100u2w.h	…
a2091.c	Drivers: scsi: remove __dev* attributes.	12 years ago
a2091.h	…
a3000.c	scsi: Fix up files implicitly depending on module.h inclusion	13 years ago
a3000.h	…
a4000t.c	…
advansys.c	Drivers: scsi: remove __dev* attributes.	12 years ago
aha152x.c	Drivers: scsi: remove __dev* attributes.	12 years ago
aha152x.h	…
aha1542.c	treewide: Put a space between #include and FILE	13 years ago
aha1542.h	…
aha1740.c	Drivers: scsi: remove __dev* attributes.	12 years ago
aha1740.h	…
aic7xxx_old.c	…
atari_NCR5380.c	…
atari_scsi.c	scsi/atari: Make more functions static	13 years ago
atari_scsi.h	scsi/atari: Make more functions static	13 years ago
atp870u.c	Drivers: scsi: remove __dev* attributes.	12 years ago
atp870u.h	…
bvme6000_scsi.c	Drivers: scsi: remove __dev* attributes.	12 years ago
ch.c	…
constants.c	[SCSI] add DID_TARGET_FAILURE and DID_NEXUS_FAILURE to hostbyte_table in constants.c	13 years ago
dc395x.c	Drivers: scsi: remove __dev* attributes.	12 years ago
dc395x.h	…
dmx3191d.c	Drivers: scsi: remove __dev* attributes.	12 years ago
dpt_i2o.c	…
dpti.h	…
dtc.c	Remove all #inclusions of asm/system.h	13 years ago
dtc.h	…
eata.c	…
eata_generic.h	…
eata_pio.c	…
eata_pio.h	…
esp_scsi.c	scsi: Use vsprintf extention %pf with builtin_return_address	13 years ago
esp_scsi.h	…
fdomain.c	Drivers: scsi: remove __dev* attributes.	12 years ago
fdomain.h	…
g_NCR5380.c	Drivers: scsi: remove __dev* attributes.	12 years ago
g_NCR5380.h	…
g_NCR5380_mmio.c	…
gdth.c	Drivers: scsi: remove __dev* attributes.	12 years ago
gdth.h	gdt: remove unnecessary #defines	13 years ago
gdth_ioctl.h	…
gdth_proc.c	…
gdth_proc.h	…
gvp11.c	Drivers: scsi: remove __dev* attributes.	12 years ago
gvp11.h	…
hosts.c	[SCSI] Fix device removal NULL pointer dereference	13 years ago
hpsa.c	Drivers: scsi: remove __dev* attributes.	12 years ago
hpsa.h	[SCSI] hpsa: dial down lockup detection during firmware flash	13 years ago
hpsa_cmd.h	[SCSI] hpsa: dial down lockup detection during firmware flash	13 years ago
hptiop.c	Drivers: scsi: remove __dev* attributes.	12 years ago
hptiop.h	[SCSI] hptiop: Support HighPoint RR4520/RR4522 HBA	12 years ago
imm.c	…
imm.h	…
in2000.c	Remove all #inclusions of asm/system.h	13 years ago
in2000.h	…
initio.c	Drivers: scsi: remove __dev* attributes.	12 years ago
initio.h	…
ipr.c	Drivers: scsi: remove __dev* attributes.	12 years ago
ipr.h	[SCSI] ipr: Driver version 2.5.4	13 years ago
ips.c	Drivers: scsi: remove __dev* attributes.	12 years ago
ips.h	…
iscsi_boot_sysfs.c	switch ->is_visible() to returning umode_t	13 years ago
iscsi_tcp.c	[SCSI] iscsi_tcp: increase max_lun to ~0, don't care	13 years ago
iscsi_tcp.h	…
jazz_esp.c	Drivers: scsi: remove __dev* attributes.	12 years ago
lasi700.c	Drivers: scsi: remove __dev* attributes.	12 years ago
libiscsi.c	[SCSI] libiscsi: fix cmd timeout/completion race	13 years ago
libiscsi_tcp.c	SCSI updates on 20120319	13 years ago
libsrp.c	scsi: Fix up files implicitly depending on module.h inclusion	13 years ago
mac53c94.c	Remove all #inclusions of asm/system.h	13 years ago
mac53c94.h	…
mac_esp.c	Drivers: scsi: remove __dev* attributes.	12 years ago
mac_scsi.c	Remove all #inclusions of asm/system.h	13 years ago
mac_scsi.h	…
megaraid.c	Drivers: scsi: remove __dev* attributes.	12 years ago
megaraid.h	megaraid: remove unnecessary #defines	13 years ago
mesh.c	Remove all #inclusions of asm/system.h	13 years ago
mesh.h	…
mvme16x_scsi.c	Drivers: scsi: remove __dev* attributes.	12 years ago
mvme147.c	…
mvme147.h	…
mvumi.c	Drivers: scsi: remove __dev* attributes.	12 years ago
mvumi.h	[SCSI] mvumi: Add support for Marvell SAS/SATA RAID-on-Chip(ROC) 88RC9580	13 years ago
ncr53c8xx.c	Remove all #inclusions of asm/system.h	13 years ago
ncr53c8xx.h	…
nsp32.c	Drivers: scsi: remove __dev* attributes.	12 years ago
nsp32.h	…
nsp32_debug.c	…
nsp32_io.h	…
osst.c	Remove all #inclusions of asm/system.h	13 years ago
osst.h	…
osst_detect.h	…
osst_options.h	…
pas16.c	Remove all #inclusions of asm/system.h	13 years ago
pas16.h	…
pmcraid.c	Drivers: scsi: remove __dev* attributes.	12 years ago
pmcraid.h	scsi: Fix typo in pmcraid.h	13 years ago
ppa.c	…
ppa.h	…
ps3rom.c	Drivers: scsi: remove __dev* attributes.	12 years ago
qla1280.c	Drivers: scsi: remove __dev* attributes.	12 years ago
qla1280.h	…
qlogicfas.c	Drivers: scsi: remove __dev* attributes.	12 years ago
qlogicfas408.c	…
qlogicfas408.h	…
qlogicpti.c	Drivers: scsi: remove __dev* attributes.	12 years ago
qlogicpti.h	…
raid_class.c	…
script_asm.pl	…
scsi.c	[SCSI] Add a report opcode helper	12 years ago
scsi.h	…
scsi_debug.c	[SCSI] scsi_debug: Fix off-by-one bug when unmapping region	13 years ago
scsi_devinfo.c	[SCSI] Disable DIF on Hitachi Ultrastar 15K300	13 years ago
scsi_error.c	[SCSI] Shorten the path length of scsi_cmd_to_driver()	13 years ago
scsi_ioctl.c	…
scsi_lib.c	Merge branch 'for-3.8/core' of git://git.kernel.dk/linux-block	12 years ago
scsi_lib_dma.c	scsi: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required	13 years ago
scsi_logging.h	…
scsi_module.c	…
scsi_netlink.c	scsi_netlink: Remove dead and buggy code	13 years ago
scsi_pm.c	[SCSI] scsi_pm: use callbacks from dev_pm_ops for scsi devices	12 years ago
scsi_priv.h	[SCSI] async: introduce 'async_domain' type	13 years ago
scsi_proc.c	…
scsi_sas_internal.h	…
scsi_scan.c	Merge SCSI misc branch into isci-for-3.6 tag	13 years ago
scsi_sysctl.c	…
scsi_sysfs.c	[SCSI] prevent stack buffer overflow in host_reset	12 years ago
scsi_tgt_if.c	scsi: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required	13 years ago
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	13 years ago
scsi_transport_fc_internal.h	…
scsi_transport_iscsi.c	netlink: Rename pid to portid to avoid confusion	13 years ago
scsi_transport_sas.c	[SCSI] scsi_transport_sas: add 12GB definitions for mpt3sas	12 years ago
scsi_transport_spi.c	[SCSI] scsi_transport_spi: fix for unbalanced reference counting	13 years ago
scsi_transport_srp.c	IB/srp: Allow SRP disconnect through sysfs	12 years ago
scsi_transport_srp_internal.h	…
scsi_typedefs.h	…
scsicam.c	fs: move code out of buffer.c	13 years ago
sd.c	[SCSI] sd: update sd to use the new pm callbacks	12 years ago
sd.h	[SCSI] sd: Implement support for WRITE SAME	12 years ago
sd_dif.c	[SCSI] sd: Avoid remapping bad reference tags	13 years ago
ses.c	…
sg.c	mm: kill vma flag VM_RESERVED and mm->reserved_vm counter	13 years ago
sgiwd93.c	Drivers: scsi: remove __dev* attributes.	12 years ago
sim710.c	Drivers: scsi: remove __dev* attributes.	12 years ago
sni_53c710.c	Drivers: scsi: remove __dev* attributes.	12 years ago
sr.c	…
sr.h	…
sr_ioctl.c	scsi: Fix up files implicitly depending on module.h inclusion	13 years ago
sr_vendor.c	…
st.c	[SCSI] st: remove st_mutex	13 years ago
st.h	[SCSI] st: raise device limit	13 years ago
st_options.h	…
stex.c	Drivers: scsi: remove __dev* attributes.	12 years ago
storvsc_drv.c	[SCSI] storvsc: Account for in-transit packets in the RESET path	13 years ago
sun3_NCR5380.c	…
sun3_scsi.c	Remove all #inclusions of asm/system.h	13 years ago
sun3_scsi.h	…
sun3_scsi_vme.c	Remove all #inclusions of asm/system.h	13 years ago
sun3x_esp.c	Drivers: scsi: remove __dev* attributes.	12 years ago
sun_esp.c	Drivers: scsi: remove __dev* attributes.	12 years ago
sym53c416.c	Drivers: scsi: remove __dev* attributes.	12 years ago
sym53c416.h	…
t128.c	Remove all #inclusions of asm/system.h	13 years ago
t128.h	…
tmscsim.c	Drivers: scsi: remove __dev* attributes.	12 years ago
tmscsim.h	…
u14-34f.c	Remove all #inclusions of asm/system.h	13 years ago
ultrastor.c	Remove all #inclusions of asm/system.h	13 years ago
ultrastor.h	…
virtio_scsi.c	Drivers: scsi: remove __dev* attributes.	12 years ago
vmw_pvscsi.c	Drivers: scsi: remove __dev* attributes.	12 years ago
vmw_pvscsi.h	[SCSI] vmw_pvscsi: Try setting host->max_id as suggested by the device.	13 years ago
wd33c93.c	…
wd33c93.h	…
wd7000.c	Remove all #inclusions of asm/system.h	13 years ago
zalon.c	Drivers: scsi: remove __dev* attributes.	12 years ago
zorro7xx.c	Drivers: scsi: remove __dev* attributes.	12 years ago