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Create a /sys/class/dpt_i2o directory and populate it with
dptiN directories. Each dptiN directory contains a "dev" file
that makes udev create /dev/dptiN
Signed-off-by: Miquel van Smoorenburg <miquels@cistron.nl>
Acked-by: Mark Salyzyn <Mark_Salyzyn@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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This is the code to actually support 64 bit platforms. 64 bit
DMA is enabled on both x86_32 PAE and 64 bit platforms.
This code is based in part on the unofficial adaptec 64-bit
dpt_i2o driver update that I got from Mark Salyzyn at Adaptec.
Signed-off-by: Miquel van Smoorenburg <miquels@cistron.nl>
Acked-by: Mark Salyzyn <Mark_Salyzyn@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Remove virt_to_bus/bus_to_virt code from dpt_i2o, and use
dma_alloc_coherent() / dma_free_coherent().
This is in preparation of 64-bit support, dma_alloc_coherent()
can allocate memory in the lower 32 bits of physical memory
which is needed because the HBA only supports message blocks under 4GB
This code is based in part on the unofficial adaptec 64-bit
dpt_i2o driver update that I got from Mark Salyzyn at Adaptec.
Signed-off-by: Miquel van Smoorenburg <miquels@cistron.nl>
Acked-by: Mark Salyzyn <Mark_Salyzyn@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Update dpt_i2o.c to use the standard __init / __exit
code instead of the legacy '#include "scsi_module.c"' code.
This is needed in preparation of 64-bit support. scsi_module.c
calls scsi_add_host() with the device pointer set to NULL, and that
crashes code like arch/x64/kernel/pci-gart_64.c::need_iommu().
The reboot_notifier code is deleted because it wasn't compiled
in ever anyway, and it would be useless to duplicate it in
the new code.
Signed-off-by: Miquel van Smoorenburg <miquels@cistron.nl>
Acked-by: Mark Salyzyn <Mark_Salyzyn@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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megaraid_sas suspend and resume are inappropriatelly placed in
__devinit section. Remove those placements and make the stuff
dependent on CONFIG_PM.
While at it, mark remove function as __devexit.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: "Yang, Bo" <Bo.Yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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For firmware that supports the feature(s), add the ability to start or
stop an array using the associated SCSI commands, to automatically
manage the spin-up of an array on new I/O reporting back the
appropriate check conditions and actions in cooperation with the
normal timeout mechanisms and enable the blackout period management in
the Firmware associated with the background spin-down of the arrays
when the Firmware times out and deems the arrays as idle.
Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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As JBOD devices (really just Simple Single Drive Volumes exported to
the SCSI channel) are managed, they fail to update correctly when the
driver triggers a SCSI scan. In addition, the ability to change
multiple arrays or JBODs at the same time was resulting in dropped
scans, set up a mechanism to issue a list of single target scans on a
single configuration change notification from the Firmware.
Performed some additional sundry cosmetic code style cleanups.
Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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On some compile environments, warnings are produced regarding the
usage of aac_logical_to_phys macro.
Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Add support for variable-length, extended, and vendor specific
CDBs to scsi-ml. It is now possible for initiators and ULD's
to issue these types of commands. LLDs need not change much.
All they need is to raise the .max_cmd_len to the longest command
they support (see iscsi patch).
- clean-up some code paths that did not expect commands to be
larger than 16, and change cmd_len members' type to short as
char is not enough.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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- struct scsi_cmnd had a 16 bytes command buffer of its own.
This is an unnecessary duplication and copy of request's
cmd. It is probably left overs from the time that scsi_cmnd
could function without a request attached. So clean that up.
- Once above is done, few places, apart from scsi-ml, needed
adjustments due to changing the data type of scsi_cmnd->cmnd.
- Lots of drivers still use MAX_COMMAND_SIZE. So I have left
that #define but equate it to BLK_MAX_CDB. The way I see it
and is reflected in the patch below is.
MAX_COMMAND_SIZE - means: The longest fixed-length (*) SCSI CDB
as per the SCSI standard and is not related
to the implementation.
BLK_MAX_CDB. - The allocated space at the request level
- I have audit all ISA drivers and made sure none use ->cmnd in a DMA
Operation. Same audit was done by Andi Kleen.
(*)fixed-length here means commands that their size can be determined
by their opcode and the CDB does not carry a length specifier, (unlike
the VARIABLE_LENGTH_CMD(0x7f) command). This is actually not exactly
true and the SCSI standard also defines extended commands and
vendor specific commands that can be bigger than 16 bytes. The kernel
will support these using the same infrastructure used for VARLEN CDB's.
So in effect MAX_COMMAND_SIZE means the maximum size command
scsi-ml supports without specifying a cmd_len by ULD's
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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On Apr 21, 2008, at 8:42 PM, Yinghai Lu wrote:
> bisected to:
>
> commit e6990c6448ca9359b6d4ad027c0a6efbf4379e64
> Author: Mark Salyzyn <Mark_Salyzyn@adaptec.com>
> Date: Mon Apr 14 14:20:16 2008 -0400
>
> [SCSI] aacraid: Fix down_interruptible() to check the return value
The return value for down_interruptible was incorrectly checked!
updated patch enclosed.
Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Update the Version and Changelog for megaraid_sas Driver
Signed-off-by: Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Adds support to the ibmvscsi driver to handle non SCSI error
status. This is needed to support some new VIOS enhancements.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Santiago Leon <santil@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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commit:
commit 542bd1377a963070bc4a03ff7d2690ddf3920596
Author: James Bottomley <James.Bottomley@HansenPartnership.com>
Date: Mon Apr 21 10:57:20 2008 -0500
[SCSI] fix SLUB WARN_ON
Fixed another problem in free list handling by moving list allocation
from scsi_host_alloc() to scsi_add_host(). Unfortunately it
introduced a new failure mode in that hosts can pass straight from
alloc to put without going through add, leaving the free list
uninitialised.
Fix by checking shost->cmd_pool on the release path to see if it got
initialised.
Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Due to recent device model changes it now no longer tolerates name
collisions. This causes a problem for ipr whose "state" attribute
collides with an identically named one in the SCSI mid-layer. Rename
the ipr driver attribute to be more specific.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Newer Dell CERC firmware (>= 6.62) implement a random deletion handling
compatible with the legacy megaraid driver. The legacy handling shifted
the target ID by 0x80 only for I/O commands (READ/WRITE/etc), whereas
megaraid_mbox shifts the target ID always if random deletion is supported.
The resulted in megaraid_mbox sending an INQUIRY to the wrong channel, and
not finding any devices, obviously.
So we disable the random deletion support if the offending firmware is
found.
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=6695
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: "Yang, Bo" <Bo.Yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (40 commits)
[SCSI] jazz_esp, sgiwd93, sni_53c710, sun3x_esp: fix platform driver hotplug/coldplug
[SCSI] aic7xxx: add const
[SCSI] aic7xxx: add static
[SCSI] aic7xxx: Update _shipped files
[SCSI] aic7xxx: teach aicasm to not emit unused debug code/data
[SCSI] qla2xxx: Update version number to 8.02.01-k2.
[SCSI] qla2xxx: Correct regression in relogin code.
[SCSI] qla2xxx: Correct misc. endian and byte-ordering issues.
[SCSI] qla2xxx: make qla2x00_issue_iocb_timeout() static
[SCSI] qla2xxx: qla_os.c, make 2 functions static
[SCSI] qla2xxx: Re-register FDMI information after a LIP.
[SCSI] qla2xxx: Correct SRB usage-after-completion/free issues.
[SCSI] qla2xxx: Correct ISP84XX verify-chip response handling.
[SCSI] qla2xxx: Wakeup DPC thread to process any deferred-work requests.
[SCSI] qla2xxx: Collapse RISC-RAM retrieval code during a firmware-dump.
[SCSI] m68k: new mac_esp scsi driver
[SCSI] zfcp: Add some statistics provided by the FCP adapter to the sysfs
[SCSI] zfcp: Print some messages only during ERP
[SCSI] zfcp: Wait for free SBAL during exchange config
[SCSI] scsi_transport_fc: fc_user_scan correction
...
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hotplug/coldplug
Since
commit 43cc71eed1250755986da4c0f9898f9a635cb3bf
Author: Kay Sievers <kay.sievers@vrfy.org>
Date: Sat Aug 18 04:40:39 2007 +0200
platform: prefix MODALIAS with "platform:"
the platform modalias is prefixed with "platform:". Add MODULE_ALIAS()
to the hotpluggable SCSI platform drivers, to re-enable auto loading.
[dbrownell@users.sourceforge.net: more drivers, registration fixes]
[akpm@linux-foundation.org: fix sgiwd93.c]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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This patch adds more const keywords where appropriate.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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This patch adds static (and sometimes const) keywords where appropriate.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Update the precompiled sequencer code to match the latest
aicasm changes.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Add a 'count' variable to each symbol which gets increased every time
the symbol is referenced. And then modify the register definition to
include counts for symbols which are referenced from the source code
only and not from the sequencer code.
This will give us an automatic usage count for the symbols with only
minimal hand-crafting.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Commit 63a8651f2548c6bb5132c0b4e7dad4f57a9274db ([SCSI] qla2xxx:
Correct infinite-login-retry issue.) introduced a small
regression where a successful relogin would result in an fcport's
loop_id to be incorrectly reset to FC_NO_LOOP_ID. Only clear-out
loopid, if retries have been 'truly' exhausted.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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There were several places in the driver which could cause byte
ordering problem as provided by Al Viro
<viro@ZenIV.linux.org.uk>.
Signed-off-by: Seokmann Ju <seokmann.ju@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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This patch makes the needlessly global qla2x00_issue_iocb_timeout()
static.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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This patch makes the following needlessly global functions static:
- qla2x00_alloc_work()
- qla2x00_post_work()
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Original code would (incorrectly) only re-register after a
loop-down condition. Also, FDMI registration should be enabled
by default.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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The driver is incorrectly assuming that the 'sp' reference held
in qla2[x00|4xx]_abort_command() is valid after the mailbox
command is issued to abort the exchange. It is *not*, as the
command may be completed during interrupt context before control
is returned to the mailbox caller.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Earlier code could trigger an infinite-retry if 1st invocation
returned a non-CS_COMPLETE status.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Use the more efficient read-DMA'ble-buffer mailbox commands
rather than reading a single word/dword at a time. We also
remove a bulk of the duplicate mailbox command-handling codes in
favor of more generic read-memory() routines (qla2xxx_dump_ram()
and qla24xx_dump_ram()).
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Replace the mac_esp driver with a new one based on the esp_scsi core.
For esp_scsi: add support for sync transfers for the PIO mode, add a new
esp_driver_ops method to get the maximum dma transfer size (like the old
NCR53C9x driver), and some cleanups.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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The new FCP adapter statistics provide a variety of information about
the virtual adapter (subchannel). In order to collect this information
the zfcp driver is extended to query this information.
The information provided by the new FCP adapter statistics can be
fetched by reading from the following files in the sysfs filesystem
/sys/class/scsi_host/host<n>/seconds_active
/sys/class/scsi_host/host<n>/requests
/sys/class/scsi_host/host<n>/megabytes
/sys/class/scsi_host/host<n>/utilization
These are the statistics on a virtual adapter (subchannel) level.
The information provided is raw and not modified or interpreted by any
means. No interpretation or modification of the values is done by the
zfcp driver.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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When statistics are polled from sysfs, the statistics use the same
commands as the adapter initialization. Change the messages printed
here, so they are only printed during initialization and not for each
poll of adapter data.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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When sending a exchange config data command, wait for a free SBAL.
This does not matter during adapter initialization, but this is
required for pulling adapter statistics during high I/O load.
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Way back when, when the fc_user_scan routine was created, it kept some
of its original logic that walked the rport list and kicked off a scan.
Unfortunately, it didn't keep any of the locking around the rport list,
nor did it consider the synchronous nature of the scan invoked. The result,
there are some scan requests where the rport list changes, thus a subsequent
scan is called on a bogus rport structure and the system NMI's.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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- where the 'irq' function argument is known never to be used, rename
it to 'dummy' to make this more obvious
- replace per-irq lookup functions and tables with a direct reference
to data object obtained via 'dev_id' function argument, passed from
request_irq()
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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scsi_transport_spi.c needs to #include <linux/sysfs.h>:
next-20080423/drivers/scsi/scsi_transport_spi.c:1467: error: implicit declaration of function 'sysfs_update_group'
make[3]: *** [drivers/scsi/scsi_transport_spi.o] Error 1
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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This patch fixes off-by-one errors in error checks (the variables are
used as array indexes for arrays with MAX_SCSI_TAR resp. MAX_LUN
elements) spotted by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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The function type_check() in aicasm grammar code was
never used properly due to a bug.
This patch fixes it up and ensures it's only called if appropriate.
In addition the unused 16bit instruction are disabled, but left in
the code for reference.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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We're getting a WARN_ON from SLUB indicating that we're trying to free
caches with in-use objects. The root cause is a new dependency in the
command/sense free on unchecked_isa_dma. The WARN_ON is caused by
drivers which change this in their setup after the command/sense cache
is allocated.
The fix is to move the allocation of this cache into scsi_add_host()
so things like gdth have an opportunity to modify it between alloc and
add (but *not* after).
The true fix would be to move unchecked_isa_dma into the template and
out of the host, so it because a truly read only variable.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: (147 commits)
KVM: kill file->f_count abuse in kvm
KVM: MMU: kvm_pv_mmu_op should not take mmap_sem
KVM: SVM: remove selective CR0 comment
KVM: SVM: remove now obsolete FIXME comment
KVM: SVM: disable CR8 intercept when tpr is not masking interrupts
KVM: SVM: sync V_TPR with LAPIC.TPR if CR8 write intercept is disabled
KVM: export kvm_lapic_set_tpr() to modules
KVM: SVM: sync TPR value to V_TPR field in the VMCB
KVM: ppc: PowerPC 440 KVM implementation
KVM: Add MAINTAINERS entry for PowerPC KVM
KVM: ppc: Add DCR access information to struct kvm_run
ppc: Export tlb_44x_hwater for KVM
KVM: Rename debugfs_dir to kvm_debugfs_dir
KVM: x86 emulator: fix lea to really get the effective address
KVM: x86 emulator: fix smsw and lmsw with a memory operand
KVM: x86 emulator: initialize src.val and dst.val for register operands
KVM: SVM: force a new asid when initializing the vmcb
KVM: fix kvm_vcpu_kick vs __vcpu_run race
KVM: add ioctls to save/store mpstate
KVM: Rename VCPU_MP_STATE_* to KVM_MP_STATE_*
...
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* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (49 commits)
ide-tape: remove tape->merge_stage
ide-tape: mv tape->merge_stage_size tape->merge_bh_size
ide-tape: mv idetape_empty_write_pipeline ide_tape_flush_merge_buffer
ide-tape: mv idetape_discard_read_pipeline ide_tape_discard_merge_buffer
ide-tape: make __idetape_discard_read_pipeline() of type void
ide: remove now unused ide_pci_create_host_proc()
ide: remove /proc/ide/ali
ide-tape: improve buffer pages freeing strategy
ide-tape: mv tape->pages_per_stage tape->pages_per_buffer
ide-tape: mv tape->stage_size tape->buffer_size
ide-tape: improve buffer allocation strategy
ide: add struct ide_io_ports (take 3)
ide: make ide_unregister() take 'ide_hwif_t *' as an argument (take 2)
ide: sanitize ide_unregister() usage
mpc8xx-ide: use ide_find_port()
ide: add "noacpi" / "acpigtf" / "acpionboot" parameters
gayle: add "doubler" parameter
ide: add "cdrom=" and "chs=" parameters
ide: add "nodma|noflush|noprobe|nowerr=" parameters
ide: remove obsoleted "hdx=autotune" kernel parameter
...
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git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-idle-fix
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-idle-fix:
fix idle (arch, acpi and apm) and lockdep
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: xpad - fix build failure
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
mlx4_core: Add helper to move QP to ready-to-send
mlx4_core: Add HW queues allocation helpers
RDMA/nes: Remove volatile qualifier from struct nes_hw_cq.cq_vbase
mlx4_core: CQ resizing should pass a 0 opcode modifier to MODIFY_CQ
mlx4_core: Move kernel doorbell management into core
IB/ehca: Bump version number to 0026
IB/ehca: Make some module parameters bool, update descriptions
IB/ehca: Remove mr_largepage parameter
IB/ehca: Move high-volume debug output to higher debug levels
IB/ehca: Prevent posting of SQ WQEs if QP not in RTS
IPoIB: Handle 4K IB MTU for UD (datagram) mode
RDMA/nes: Fix adapter reset after PXE boot
RDMA/nes: Print IPv4 addresses in a readable format
RDMA/nes: Use print_mac() to format ethernet addresses for printing
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... and isn't possible on sparc32 boxen anyway, unless somebody
had done JavaStation with PCIE lately.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Many of the overflow checks test whether the value has
gone negative, and we want to retain such checks.
Reported by Julia Lawall.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Get rid of the pipeline merge stage but retain the chrdev req caching
functionality by using a merge buffer tape->merge_bh which is flushed in chunks
of several blocks at a time. Also, remove last references to pipelining, e.g.
typedef idetape_stage_s.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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