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Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Commit 3320ad994afb2c44ad34b3b34c3c5cf0da297331 broke mmio config space
accesses totally on i386 - it dropped the "reg" offset to the address.
Cc: dean gaudet <dean@arctic.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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apply_alternatives uses memcpy() to apply alternatives. Which has the
unfortunate effect that while applying memcpy alternative to memcpy
itself it tries to overwrite itself with nops - which causes #UD fault
as it overwrites half of an instruction in copy loop, and from this
point on only possible outcome is triplefault and reboot.
So let's overwrite only first two instructions of memcpy - as long as
the main memcpy loop is not in first two bytes it will work fine.
Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[S390] monwriter: Serialization bug for multithreaded applications.
[S390] vmur: diag14 only works with buffers below 2GB
[S390] vmur: add "top of queue" sanity check for reader open
[S390] vmur: reject open on z/VM reader files with status HOLD
[S390] vmur: use DECLARE_COMPLETION_ONSTACK to keep lockdep happy
[S390] vmur: allocate single record buffers instead of one big data buffer
[S390] remove DEFAULT_MIGRATION_COST
[S390] qdio: make sure data structures are correctly aligned.
[S390] hypfs: implement show_options
[S390] cio: avoid memory leak on error in css_alloc_subchannel().
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Locking added so that multithreaded applications can now do writes
from different threads without the risk of storage corruption.
Signed-off-by: Melissa Howland <melissah@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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If memory buffers above 2GB are used, diagnose 14 raises a specification
exception. This fix ensures that buffer allocation is done below the 2GB
boundary.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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If the z/VM reader is already open, it can happen that after opening the
Linux reader device, not the topmost file is processed. According the
semantics of the Linux z/VM unit record device driver, always the topmost
file has to be processed. With this fix an error is returned if that is
not the case.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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If a reader file with HOLD status is at the top of the reader queue, currently
all read requests will return data of the second file in the queue. But the
semantics of vmur is that always the topmost file is read. With this fix
-EPERM is returned on open, if the topmost reader file is in HOLD status.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
000000000ff9fb08 000000000ff9fb18 0000000000000002 0000000000000000
000000000ff9fbb8 000000000ff9fb30 000000000ff9fb30 0000000000104198
0000000000000000 0000000000000002 0000000000000000 0000000000000000
000000000ff9fb18 000000000000000c 000000000ff9fb18 000000000ff9fb88
0000000000448db0 0000000000104198 000000000ff9fb18 000000000ff9fb68
Call Trace:
([<00000000001040ea>] show_trace+0x12e/0x170)
[<00000000001041f2>] show_stack+0xc6/0xf8
[<0000000000104252>] dump_stack+0x2e/0x3c
[<0000000000155f9c>] __lock_acquire+0x460/0x1048
[<0000000000156c16>] lock_acquire+0x92/0xb8
[<000000000043f406>] _spin_lock_irqsave+0x62/0x80
[<0000000000121382>] complete+0x32/0x78
[<000000001082b468>] ur_int_handler+0xc8/0xec [vmur]
[<0000000000313216>] ccw_device_call_handler+0xae/0xd4
[<0000000000310da4>] ccw_device_irq+0x5c/0x130
[<0000000000312c84>] io_subchannel_irq+0x8c/0x118
[<000000000030a88c>] do_IRQ+0x16c/0x194
[<0000000000111a62>] io_no_vtime+0x16/0x1c
[<0000000080001394>] 0x80001394
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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vmur allocates one contiguous kernel buffer to copy user data when creating
ccw programs for punch or printer. If big block sizes are used, under memory
pressure it can happen, that we do not get memory in one chunk. Now we
allocate memory for each single record to avoid high order allocations.
Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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0437e109e1841607f2988891eaa36c531c6aa6ac removes the migration
cost init code. Remove the s390 leftovers as well.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The slsb structure contained at the beginning of the qdio_q structure
must start on a 256 byte boundary. To make sure this is the case even
if slab debugging is turned on create an own slab cache for qdio_q
structures.
Besides that don't use the slab allocator to allocate whole pages. Use
the page allocator instead.
Also fix a few memory leaks in error handling code.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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sch->lock has been allocated in cio_validate_subchannel(), it must be
freed if cio_modify() fails.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Fix size check for hugetlbfs
[POWERPC] Fix initialization and usage of dma_mask
[POWERPC] Fix more section mismatches in head_64.S
[POWERPC] Revert "[POWERPC] Add 'mdio' to bus scan id list for platforms with QE UEC"
[POWERPC] PS3: Update ps3_defconfig
[POWERPC] PS3: Remove text saying PS3 support is incomplete
[POWERPC] PS3: Fix storage probe logic
[POWERPC] cell: Move SPU affinity init to spu_management_of_ops
[POWERPC] Fix potential duplicate entry in SLB shadow buffer
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My "slices" address space management code that was added in the 2.6.22
implementation of get_unmapped_area() doesn't properly check that the
size is a multiple of the requested page size. This allows userland to
create VMAs that aren't a multiple of the huge page size with hugetlbfs
(since hugetlbfs entirely relies on get_unmapped_area() to do that
checking) which leads to a kernel BUG() when such areas are torn down.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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powerpc has a couple of bugs in the usage of dma_masks that tend to
break when drivers explicitly try to set a 32-bit mask for example.
First, the code that generates the pci devices from the OF device-tree
doesn't initialize the mask properly, then our implementation of
set_dma_mask() was trying to validate the -previous- mask value, not the
one passed in as an argument.
This fixes these problems.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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WARNING: vmlinux.o(.text+0x8174): Section mismatch: reference to .init.text:.prom_init (between '.__boot_from_prom' and '.__after_prom_start')
WARNING: vmlinux.o(.text+0x8498): Section mismatch: reference to .init.text:.early_setup (between '.start_here_multiplatform' and '.start_here_common')
WARNING: vmlinux.o(.text+0x8514): Section mismatch: reference to .init.text:.setup_system (between '.start_here_common' and 'system_call_common')
WARNING: vmlinux.o(.text+0x8530): Section mismatch: reference to .init.text:.start_kernel (between '.start_here_common' and 'system_call_common')
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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with QE UEC"
This reverts commit 3baee955953957be5496cd28e9c544d9db214262.
That commit was a mistake from the start; I added mdio type to the
bus scan list early on in my ucc_geth migrate to phylib development,
which is just pure wrong (the ucc_geth_mii driver creates the mii
bus and the PHY layer handles PHY enumeration without translation).
This follows on from commit 77926826f301fbd8ed96d3cd9ff17a5b59560dfb:
Revert "[POWERPC] Don't complain if size-cells == 0 in prom_parse()"
which was basically trying to hide a symptom of the original mistake
this revert fixes.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Update ps3_defconfig.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Remove the Kconfig message that indicates the PS3 platform support is
incomplete.
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Fix the PS3 storage probe logic to properly find device regions on cold
startup.
o Change the storage probe event mask from notify_device_ready
to notify_region_update.
o Improve the storage probe error handling.
o Change ps3_storage_wait_for_device() to use a temporary variable to hold
the buffer address.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This patch moves affinity initialization code from spu_base.c to a
new spu_management_of_ops function (init_affinity), which is empty
in the case of PS3. This fixes a linking problem that was happening
when compiling for PS3.
Also, some small code style changes were made.
Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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We were getting a duplicate entry in the SLB shadow buffer in
slb_flush_and_rebolt() if the kernel stack was in the same segment
as PAGE_OFFSET, which on POWER6 causes the hypervisor to terminate
the partition with an error. This fixes it.
Also we were not creating an SLB entry (or an SLB shadow buffer
entry) for the kernel stack on secondary CPUs when starting the
CPU. This isn't a major problem, since an appropriate entry will
be created on demand, but this fixes that also for consistency.
Signed-off-by: Paul Mackerras <paulus@samba.org>
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git://lost.foo-projects.org/~dwillia2/git/iop
* 'async-tx-fixes-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop:
async_tx: update MAINTAINERS for async_tx and iop-adma
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Also, rename the dma engine entry since it is now a generic offload engine
subsystem, not just memcpy.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
ocfs2: set non-default s_time_gran during mount
ocfs2: Retry sendpage() if it returns EAGAIN
ocfs2: Fix rename/extend race
[2.6 patch] ocfs2_insert_extent(): remove dead code
ocfs2: Fix max offset calculations
ocfs2: check ia_size limits in setattr
ocfs2: Fix some casting errors related to file writes
ocfs2: use s_maxbytes directly in ocfs2_change_file_space()
ocfs2: Restrict inode changes in ocfs2_update_inode_atime()
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We need to manually set this to '1' during mount, otherwise inode_setattr()
will chop off the nanosecond portion of our timestamps.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Instead of treating EAGAIN, returned from sendpage(), as an error, this
patch retries the operation.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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If one process is extending a file while another is renaming it, there
exists a window when rename could flush the old inode's stale i_size to
disk. This patch recognizes the fact that rename is only updating the old
inode's ctime, so it ensures only that value is flushed to disk.
Signed-off-by: Sunil Mushran <sunil.musran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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This patch removes some now dead code.
Spotted by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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ocfs2_max_file_offset() was over-estimating the largest file size for
several cases. This wasn't really a problem before, but now that we support
sparse files, it needs to be more accurate.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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We have to manually check the requested truncate size as the check in
vmtruncate() comes too late for Ocfs2.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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ocfs2_align_clusters_to_page_index() needs to cast the clusters shift to
pgoff_t and ocfs2_file_buffered_write() needs loff_t when calculating
destination start for memcpy.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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There's no need to recalculate things via ocfs2_max_file_offset() as we've
already done that to fill s_maxbytes, so use that instead. We can also
un-export ocfs2_max_file_offset() then.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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ocfs2_update_inode_atime() calls ocfs2_mark_inode_dirty() to push changes
from the struct inode into the ocfs2 disk inode. The problem is,
ocfs2_mark_inode_dirty() might change other fields, depending on what
happened to the struct inode. Since we don't always have locking to
serialize changes to other fields (like i_size, etc), just fix things up to
only touch the atime field.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
BLOCK: Hide the contents of linux/bio.h if CONFIG_BLOCK=n
sysace: HDIO_GETGEO has it's own method for ages
drivers/block/cpqarray.c: better error handling and kmalloc + memset conversion to k[cz]alloc
drivers/block/cciss.c: kmalloc + memset conversion to kzalloc
Clean up duplicate includes in drivers/block/
Fix remap handling by blktrace
[PATCH] remove mm/filemap.c:file_send_actor()
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Hide the contents of linux/bio.h if CONFIG_BLOCK=n as there shouldn't be
compiled code that uses it.
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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The way this driver tries to implement HDIO_GETGEO it'll never be called.
Then again on ppc it probably will never be called anyway because it's
utterly pointless.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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conversion to k[cz]alloc
This patch removes some redundant casts, does the kmalloc + memset to
k[cz]alloc conversion and it changes the error path to use goto (to avoid code
duplication).
drivers/block/cpqarray.c | 49567 -> 48623 (-944 bytes)
drivers/block/cpqarray.o | 178820 -> 178288 (-532 bytes)
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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drivers/block/cciss.c | 104285 -> 104168 (-117 bytes)
drivers/block/cciss.o | 277400 -> 277124 (-276 bytes)
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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This patch cleans up duplicate includes in
drivers/block/
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Satyam Sharma <satyam.sharma@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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This patch provides more information concerning REMAP operations on block
IOs. The additional information provides clearer details at the user level,
and supports post-processing analysis in btt.
o Adds in partition remaps on the same device.
o Fixed up the remap information in DM to be in the right order
o Sent up mapped-from and mapped-to device information
Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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This patch removes the no longer used file_send_actor().
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
sched debug: dont print kernel address in /proc/sched_debug
sched: fix typo in the FAIR_GROUP_SCHED branch
sched: improve rq-clock overflow logic
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Arjan van de Ven pointed out that we should not print kernel addresses
in world-readable /proc files - fix that.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
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while there's no in-tree way to turn group scheduling at the moment,
fix a typo in it nevertheless.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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improve the rq-clock overflow logic: limit the absolute rq->clock
delta since the last scheduler tick, instead of limiting the delta
itself.
tested by Arjan van de Ven - whole laptop was misbehaving due to
an incorrectly calibrated cpu_khz confusing sched_clock().
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
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The new percpu code has apparently broken the doublefault handler
when CONFIG_DEBUG_SPINLOCK is set. Doublefault is handled by
a hardware task, making the check
SPIN_BUG_ON(lock->owner == current, lock, "recursion");
fault because it uses the FS register to access the percpu data
for current, and that register is zero in the new TSS. (The trace
I saw was on 2.6.20 where it was GS, but it looks like this will
still happen with FS on 2.6.22.)
Initializing FS in the doublefault_tss should fix it.
AK: Also fix broken ptr_ok() and turn printks into KERN_EMERG
AK: And add a PANIC prefix to make clear the system will hang
AK: (e.g. x86-64 will recover)
Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix
WARNING: vmlinux.o(.text+0x183): Section mismatch: reference to .init.text:start_kernel (between 'is386' and 'check_x87')
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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