We have a single bank in that array, this patch
is in preparation to remove that array. It just
shifts everything to a new set of functions
for register IO while also removing old ones.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This is in preparation for removing the pointless
irq_banks array.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
of_device_ids (i.e. compatible strings and the respective data) are not
supposed to change at runtime. All functions working with of_device_ids
provided by <linux/of.h> work with const of_device_ids. So mark the
non-const function parameters and structs for OMAP2+ as const, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The definition
static const char *omap3_boards_compat[] __initconst = {
defines a changable array of constant strings. That is you must not do:
*omap3_boards_compat[0] = 'f';
but
omap3_boards_compat[0] = "another string";
is fine. So the annotation __initconst is wrong and yields a compiler
error when other really const variables are added with __initconst.
As the struct machine_desc member dt_compat is declared as
const char *const *dt_compat;
making the arrays const is the better alternative over changing all
annotations to __initdata.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Provide OMAP3, 4 and OMAP5 with interrupt number for PRM
And for DRA7, provide crossbar number for prm interrupt.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
OPP is now a normal kernel library selected by its users rather than a
feature that architectures need to enable so ARCH_HAS_OPP serves no
function any more - remove the selects.
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
With consolidated code, now we can add the required hooks for
DRA7 to enable power management.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[nm@ti.com: minor modifications]
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
With consolidated code, now we can add the required hooks for
OMAP5 to enable power management.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[nm@ti.com: minor rebase updates]
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
On OMAP5 / DRA7, prevent a CPU powerdomain OFF and resulting MPU OSWR
and instead attempt a CPU RET and side effect, MPU RET in suspend.
NOTE: the hardware was originally designed to be capable of achieving
deep power states such as OFF and OSWR, however due to various issues
and risks, deepest valid state was determined to be CSWR - hence we use
the errata framework to handle this case.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[nm@ti.com: updates]
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Dont assume that all OMAP4+ code will be able to use OMAP4 hotplug
logic. On OMAP5, DRA7, we do not need this in place yet, also,
currently the CPU startup pointer is located in omap4_cpu_pm_info
instead of cpu_pm_ops.
So, isolate the function to hotplug_restart pointer in cpu_pm_ops
where it should have belonged, initalize them as per valid startup
pointers for OMAP4430/60 as in current logic, however provide
dummy_cpu_resume to be the startup location as well.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[nm@ti.com: split this out of original code and isolate it]
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Get rid of all assumptions about always having a sar base on *all*
OMAP4+ platforms. We dont need one on DRA7 and it is not necessary at
this point for OMAP5 either.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[nm@ti.com: Split and optimize]
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
In addition to the standard power-management technique, the OMAP5 / DRA7
MPU subsystem also employs an SR3-APG (mercury) power management
technology to reduce leakage.
It allows for full logic and memories retention on MPU_C0 and MPU_C1 and
is controlled by the PRCM_MPU. Only "Fast-mode" is supported on the
OMAP5 and DRA7 family of processors.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[nm@ti.com: minor consolidation]
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Enables MPUSS ES2 power management mode using ES2_PM_MODE in
AMBA_IF_MODE register.
0x0: OMAP5 ES1 behavior, CPU cores would enter and exit OFF mode together.
Broken! Fortunately, we do not support this anymore.
0x1: OMAP5 ES2, DRA7 behavior, CPU cores are allowed to enter/exit OFF mode
independently.
This is one time settings thanks to always ON domain.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[nm@ti.com: minor conflict resolutions, consolidation for DRA7]
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
With EMIF clock-domain put under hardware supervised control, memory
corruption and untraceable crashes are observed on OMAP5. Further
investigation revealed that there is a weakness in the PRCM on this
specific dynamic depedency.
The recommendation is to set MPUSS static dependency towards EMIF
clock-domain to avoid issues. This recommendation holds good for DRA7
family of devices as well.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[rnayak@ti.com: DRA7]
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[nm@ti.com: conflict resolution, dra7]
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
On OMAP5, RM_CPUi_CPUi_CONTEXT offset has changed. Update the code
so that same code works for OMAP4+ devices. DRA7 and OMAP5 have the same
context offset as well.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[rnayak@ti.com: for DRA7]
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[nm@ti.com: rebase, split/merge etc..]
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Not all SoCs support OFF mode - for example DRA74/72. So, use valid
power state during CPU hotplug.
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
We are using power domain state as RET and logic state as OFF. This
state is OSWR. This may not always be supported on ALL power domains. In
fact, on certain power domains, this might result in a hang on certain
platforms. Instead, depend on powerdomain data to provide accurate
information about the supported powerdomain states and use the
appropriate function to query and use it as part of suspend path.
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Move the logic state as different for each power domain. This allows us
to customize the deepest power state we should target over all for each
powerdomain in the follow on patches.
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
powerdomain configuration in OMAP is done using PWRSTCTRL register for
each power domain. However, PRCM lets us write any value we'd like to
the logic and power domain target states, however the SoC integration
tends to actually function only at a few discrete states. These valid
states are already in our powerdomains_xxx_data.c file.
So, provide a function to easily query valid low power state that the
power domain is allowed to go to.
Based on work originally done by Jean Pihet <j-pihet@ti.com>
https://patchwork.kernel.org/patch/1325091/ . There is no attempt to
create a new powerdomain solution here, except fixing issues seen
attempting invalid programming attempts. Future consolidation to the
generic powerdomain framework should consider this requirement as
well.
Similar solutions have been done in product kernels in the past such
as:
https://android.googlesource.com/kernel/omap.git/+blame/android-omap-panda-3.0/arch/arm/mach-omap2/pm44xx.c
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
No need to invoke callback when the clkdm pointer is NULL.
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Update the power domain power states for final production chip
capability. OFF mode, OSWR etc have been descoped for various domains.
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Allow the PRM interrupt information to be picked up from device tree.
OMAP3 may use legacy boot and needs to be compatible with old dtbs
(without interrupt populated), for these, we use the value which is
pre-populated.
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
OMAP5 and DRA7 can now use pinctrl based I/O daisychain wakeup
capability. So, enable the support.
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
"wkup" event at bit offset 0 exists only on OMAP3.
OMAP4430/60 PRM_IRQSTATUS_A9, OMAP5/DRA7 PRM_IRQSTATUS_MPU
register bit 0 is DPLL_CORE_RECAL_ST not wakeup event like OMAP3.
The same applies to AM437x as well.
Remove the wrong definition.
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Allow the PRM interrupt information to be picked up from device tree.
the only exception is for OMAP4 which uses values pre-populated and allows
compatibility with older dtb.
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
use the generic function to pick up the prm_instance for a generic logic
which can be reused from OMAP4+
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
PRM device instance can vary depending on SoC. We already handle the
same during reset of the device, However, this is also needed
for other logic instances. So, first abstract this out to a generic
function.
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Beaglebone white and beaglebone black differ in tiny little aspects.
This is the reason why we maintain seperate dts for these platforms.
However, there is no real way to decode from dtb which platform it is
since compatible and model name are the same for both platforms.
Fix this so that beaglebone black and beaglebone are identifiable,
while maintaining compatibility for older zImages which might use old
beaglebone compatible flag for black as well.
Reported-by: Tom Rini <trini@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Currently we claim that omap4-panda and omap4-panda-es are essentially
the same, but they are not since PandaBoard-ES uses OMAP4460 and
PandaBoard uses OMAP4430.
So, split the common definition and make the model name available.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
- support highmem on cores with aliasing data cache. Enable highmem on kc705
by default;
- simplify addition of new core variants (no need to modify Kconfig /
Makefiles);
- improve robustness of unaligned access handler and its interaction with
window overflow/underflow exception handlers;
- deprecate atomic and spill registers syscalls;
- clean up Kconfig: remove orphan MATH_EMULATION, sort 'select' statements;
- wire up renameat2 syscall.
Various fixes:
- fix address checks in dma_{alloc,free}_coherent (runtime BUG);
- fix access to THREAD_RA/THREAD_SP/THREAD_DS (debug build breakage);
- fix TLBTEMP_BASE_2 region handling in fast_second_level_miss (runtime
unrecoverable exception);
- fix a6 and a7 handling in fast_syscall_xtensa (runtime userspace register
clobbering);
- fix kernel/user jump out of fast_unaligned (potential runtime unrecoverabl
exception);
- replace termios IOCTL code definitions with constants (userspace build
breakage).
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Merge tag 'xtensa-20140830' of git://github.com/czankel/xtensa-linux
Pull Xtensa updates from Chris Zankel:
"Xtensa improvements for 3.17:
- support highmem on cores with aliasing data cache. Enable highmem
on kc705 by default
- simplify addition of new core variants (no need to modify Kconfig /
Makefiles)
- improve robustness of unaligned access handler and its interaction
with window overflow/underflow exception handlers
- deprecate atomic and spill registers syscalls
- clean up Kconfig: remove orphan MATH_EMULATION, sort 'select'
statements
- wire up renameat2 syscall.
Various fixes:
- fix address checks in dma_{alloc,free}_coherent (runtime BUG)
- fix access to THREAD_RA/THREAD_SP/THREAD_DS (debug build breakage)
- fix TLBTEMP_BASE_2 region handling in fast_second_level_miss
(runtime unrecoverable exception)
- fix a6 and a7 handling in fast_syscall_xtensa (runtime userspace
register clobbering)
- fix kernel/user jump out of fast_unaligned (potential runtime
unrecoverabl exception)
- replace termios IOCTL code definitions with constants (userspace
build breakage)"
* tag 'xtensa-20140830' of git://github.com/czankel/xtensa-linux: (25 commits)
xtensa: deprecate fast_xtensa and fast_spill_registers syscalls
xtensa: don't allow overflow/underflow on unaligned stack
xtensa: fix a6 and a7 handling in fast_syscall_xtensa
xtensa: allow single-stepping through unaligned load/store
xtensa: move invalid unaligned instruction handler closer to its users
xtensa: make fast_unaligned store restartable
xtensa: add double exception fixup handler for fast_unaligned
xtensa: fix kernel/user jump out of fast_unaligned
xtensa: configure kc705 for highmem
xtensa: support highmem in aliasing cache flushing code
xtensa: support aliasing cache in kmap
xtensa: support aliasing cache in k[un]map_atomic
xtensa: implement clear_user_highpage and copy_user_highpage
xtensa: fix TLBTEMP_BASE_2 region handling in fast_second_level_miss
xtensa: allow fixmap and kmap span more than one page table
xtensa: make fixmap region addressing grow with index
xtensa: fix access to THREAD_RA/THREAD_SP/THREAD_DS
xtensa: add renameat2 syscall
xtensa: fix address checks in dma_{alloc,free}_coherent
xtensa: replace IOCTL code definitions with constants
...
unicore32 builds fail with
arch/unicore32/kernel/signal.c: In function ‘setup_frame’:
arch/unicore32/kernel/signal.c:257: error: ‘usig’ undeclared (first use in this function)
arch/unicore32/kernel/signal.c:279: error: ‘usig’ undeclared (first use in this function)
arch/unicore32/kernel/signal.c: In function ‘handle_signal’:
arch/unicore32/kernel/signal.c:306: warning: unused variable ‘tsk’
arch/unicore32/kernel/signal.c: In function ‘do_signal’:
arch/unicore32/kernel/signal.c:376: error: implicit declaration of function ‘get_signsl’
make[1]: *** [arch/unicore32/kernel/signal.o] Error 1
make: *** [arch/unicore32/kernel/signal.o] Error 2
Bisect points to commit 649671c90e ("unicore32: Use get_signal()
signal_setup_done()").
This code never even compiled. Reverting the patch does not work, since
previously used functions no longer exist, so try to fix it up. Compile
tested only.
Fixes: 649671c90e ("unicore32: Use get_signal() signal_setup_done()")
Cc: Richard Weinberger <richard@nod.at>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull ARM fixes from Russell King:
"Various assorted fixes:
- a couple of patches from Mark Rutland to resolve an errata with
Cortex-A15 CPUs.
- fix cpuidle for the CPU part ID changes in the last merge window
- add support for a relocation which ARM binutils is generating in
some circumstances"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8130/1: cpuidle/cpuidle-big_little: fix reading cpu id part number
ARM: 8129/1: errata: work around Cortex-A15 erratum 830321 using dummy strex
ARM: 8128/1: abort: don't clear the exclusive monitors
ARM: 8127/1: module: add support for R_ARM_TARGET1 relocations
Here's the weekly batch of fixes from arm-soc.
The delta is a largeish negative delta, due to revert of SMP support for Broadcom's
STB SoC -- it was accidentally merged before some issues had been addressed, so they
will make a new attempt for 3.18. I didn't see a need for a full revert of the whole
platform due to this, we're keeping the rest enabled.
The rest is mostly:
* A handful of DT fixes for i.MX (Hummingboard/Cubox-i in particular)
* Some MTD/NAND fixes for OMAP
* Minor DT fixes for shmobile
* Warning fix for UP builds on vexpress/spc
There's also a couple of patches that wires up hwmod on TI's DRA7 SoC
so it can boot. Drivers and the rest had landed for 3.17, and it's small
and isolated so it made sense to pick up now even if it's not a bugfix.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Here's the weekly batch of fixes from arm-soc.
The delta is a largeish negative delta, due to revert of SMP support
for Broadcom's STB SoC -- it was accidentally merged before some
issues had been addressed, so they will make a new attempt for 3.18.
I didn't see a need for a full revert of the whole platform due to
this, we're keeping the rest enabled.
The rest is mostly:
- a handful of DT fixes for i.MX (Hummingboard/Cubox-i in particular)
- some MTD/NAND fixes for OMAP
- minor DT fixes for shmobile
- warning fix for UP builds on vexpress/spc
There's also a couple of patches that wires up hwmod on TI's DRA7 SoC
so it can boot. Drivers and the rest had landed for 3.17, and it's
small and isolated so it made sense to pick up now even if it's not a
bugfix"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (23 commits)
vexpress/spc: fix a build warning on array bounds
ARM: DRA7: hwmod: Add dra74x and dra72x specific ocp interface lists
ARM: DRA7: Add support for soc_is_dra74x() and soc_is_dra72x() variants
MAINTAINERS: catch special Rockchip code locations
ARM: dts: microsom-ar8035: MDIO pad must be set open drain
ARM: dts: omap54xx-clocks: Fix the l3 and l4 clock rates
ARM: brcmstb: revert SMP support
ARM: OMAP2+: hwmod: Rearm wake-up interrupts for DT when MUSB is idled
ARM: dts: Enable UART wake-up events for beagleboard
ARM: dts: Remove twl6030 clk32g "regulator"
ARM: OMAP2+: omap_device: remove warning that clk alias already exists
ARM: OMAP: fix %d confusingly prefixed with 0x in format string
ARM: dts: DRA7: fix interrupt-cells for GPIO
mtd: nand: omap: Fix 1-bit Hamming code scheme, omap_calculate_ecc()
ARM: dts: omap3430-sdp: Revert to using software ECC for NAND
ARM: OMAP2+: GPMC: Support Software ECC scheme via DT
mtd: nand: omap: Revert to using software ECC by default
ARM: dts: hummingboard/cubox-i: change SPDIF output to be more descriptive
ARM: dts: hummingboard/cubox-i: add USB OC pinctrl configuration
ARM: shmobile: r8a7791: add missing 0x0100 for SDCKCR
...
With ARCH_VEXPRESS_SPC option, kernel build has the following
warning:
arch/arm/mach-vexpress/spc.c: In function ‘ve_spc_clk_init’:
arch/arm/mach-vexpress/spc.c:431:38: warning: array subscript is below array bounds [-Warray-bounds]
struct ve_spc_opp *opps = info->opps[cluster];
^
since 'cluster' maybe '-1' in UP system. This patch does a active
checking to fix this issue.
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Acked-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
are OMAP2+ derivative SoCs. This should be low-risk to existing OMAP
platforms.
Basic build, boot, and PM test logs are available here:
http://www.pwsan.com/omap/testlogs/hwmod-a-early-v3.17-rc/20140827194314/
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Merge tag 'for-v3.17-rc/omap-dra72x-d74x-support-a' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into fixes
Pull "ARM: OMAP2+: DRA72x/DRA74x basic support" from Tony Lindgren:
Add basic subarchitecture support for the DRA72x and DRA74x. These
are OMAP2+ derivative SoCs. This should be low-risk to existing OMAP
platforms.
Basic build, boot, and PM test logs are available here:
http://www.pwsan.com/omap/testlogs/hwmod-a-early-v3.17-rc/20140827194314/
* tag 'for-v3.17-rc/omap-dra72x-d74x-support-a' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending:
ARM: DRA7: hwmod: Add dra74x and dra72x specific ocp interface lists
ARM: DRA7: Add support for soc_is_dra74x() and soc_is_dra72x() variants
Signed-off-by: Olof Johansson <olof@lixom.net>
Pull x86 fixes from Peter Anvin:
"One patch to avoid assigning interrupts we don't actually have on
non-PC platforms, and two patches that addresses bugs in the new
IOAPIC assignment code"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, irq, PCI: Keep IRQ assignment for runtime power management
x86: irq: Fix bug in setting IOAPIC pin attributes
x86: Fix non-PC platform kernel crash on boot due to NULL dereference
Merge patches from Andrew Morton:
"22 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (22 commits)
kexec: purgatory: add clean-up for purgatory directory
Documentation/kdump/kdump.txt: add ARM description
flush_icache_range: export symbol to fix build errors
tools: selftests: fix build issue with make kselftests target
ocfs2: quorum: add a log for node not fenced
ocfs2: o2net: set tcp user timeout to max value
ocfs2: o2net: don't shutdown connection when idle timeout
ocfs2: do not write error flag to user structure we cannot copy from/to
x86/purgatory: use approprate -m64/-32 build flag for arch/x86/purgatory
drivers/rtc/rtc-s5m.c: re-add support for devices without irq specified
xattr: fix check for simultaneous glibc header inclusion
kexec: remove CONFIG_KEXEC dependency on crypto
kexec: create a new config option CONFIG_KEXEC_FILE for new syscall
x86,mm: fix pte_special versus pte_numa
hugetlb_cgroup: use lockdep_assert_held rather than spin_is_locked
mm/zpool: use prefixed module loading
zram: fix incorrect stat with failed_reads
lib: turn CONFIG_STACKTRACE into an actual option.
mm: actually clear pmd_numa before invalidating
memblock, memhotplug: fix wrong type in memblock_find_in_range_node().
...
Without this patch the kexec-purgatory.c and purgatory.ro files are not
removed after make mrproper.
Signed-off-by: Michael Welling <mwelling@ieee.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Thomas reported that build of x86_64 kernel was failing for him. He is
using 32bit tool chain.
Problem is that while compiling purgatory, I have not specified -m64
flag. And 32bit tool chain must be assuming -m32 by default.
Following is error message.
(mini) [~/work/linux-2.6] make
scripts/kconfig/conf --silentoldconfig Kconfig
CHK include/config/kernel.release
UPD include/config/kernel.release
CHK include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
UPD include/generated/utsrelease.h
CC arch/x86/purgatory/purgatory.o
arch/x86/purgatory/purgatory.c:1:0: error: code model 'large' not supported in
the 32 bit mode
Fix it by explicitly passing appropriate -m64/-m32 build flag for
purgatory.
Reported-by: Thomas Glanzmann <thomas@glanzmann.de>
Tested-by: Thomas Glanzmann <thomas@glanzmann.de>
Suggested-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
New system call depends on crypto. As it did not have a separate config
option, CONFIG_KEXEC was modified to select CRYPTO and CRYPTO_SHA256.
But now previous patch introduced a new config option for new syscall.
So CONFIG_KEXEC does not require crypto. Remove that dependency.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Currently new system call kexec_file_load() and all the associated code
compiles if CONFIG_KEXEC=y. But new syscall also compiles purgatory
code which currently uses gcc option -mcmodel=large. This option seems
to be available only gcc 4.4 onwards.
Hiding new functionality behind a new config option will not break
existing users of old gcc. Those who wish to enable new functionality
will require new gcc. Having said that, I am trying to figure out how
can I move away from using -mcmodel=large but that can take a while.
I think there are other advantages of introducing this new config
option. As this option will be enabled only on x86_64, other arches
don't have to compile generic kexec code which will never be used. This
new code selects CRYPTO=y and CRYPTO_SHA256=y. And all other arches had
to do this for CONFIG_KEXEC. Now with introduction of new config
option, we can remove crypto dependency from other arches.
Now CONFIG_KEXEC_FILE is available only on x86_64. So whereever I had
CONFIG_X86_64 defined, I got rid of that.
For CONFIG_KEXEC_FILE, instead of doing select CRYPTO=y, I changed it to
"depends on CRYPTO=y". This should be safer as "select" is not
recursive.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Tested-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
