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2008-04-27KVM: x86 emulator: initialize src.val and dst.val for register operandsAvi Kivity
This lets us treat the case where mod == 3 in the same manner as other cases. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: SVM: force a new asid when initializing the vmcbAvi Kivity
Shutdown interception clears the vmcb, leaving the asid at zero (which is illegal. so force a new asid on vmcb initialization. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: fix kvm_vcpu_kick vs __vcpu_run raceMarcelo Tosatti
There is a window open between testing of pending IRQ's and assignment of guest_mode in __vcpu_run. Injection of IRQ's can race with __vcpu_run as follows: CPU0 CPU1 kvm_x86_ops->run() vcpu->guest_mode = 0 SET_IRQ_LINE ioctl .. kvm_x86_ops->inject_pending_irq kvm_cpu_has_interrupt() apic_test_and_set_irr() kvm_vcpu_kick if (vcpu->guest_mode) send_ipi() vcpu->guest_mode = 1 So move guest_mode=1 assignment before ->inject_pending_irq, and make sure that it won't reorder after it. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: add ioctls to save/store mpstateMarcelo Tosatti
So userspace can save/restore the mpstate during migration. [avi: export the #define constants describing the value] [christian: add s390 stubs] [avi: ditto for ia64] Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27[SCSI] esp_scsi: Make cur_residue and tot_residue signed.David S. Miller
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>
2008-04-27ide-tape: remove tape->merge_stageBorislav Petkov
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>
2008-04-27ide-tape: mv tape->merge_stage_size tape->merge_bh_sizeBorislav Petkov
This is the size of the merge buffer. Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: mv idetape_empty_write_pipeline ide_tape_flush_merge_bufferBorislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: mv idetape_discard_read_pipeline ide_tape_discard_merge_bufferBorislav Petkov
Also, rename its __-low level helper too. Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: make __idetape_discard_read_pipeline() of type voidBorislav Petkov
It always returns 0 which has no effect on tape positioning calculation so simplify it by converting its type to void, bringing no functional change to the driver. Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: remove now unused ide_pci_create_host_proc()Alexey Dobriyan
It creates files in proc with obsoleted ->get_info interface. Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Cc: Andrew Morton <akpm@osdl.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: remove /proc/ide/aliAlexey Dobriyan
Bart says: "can be done from user-space and is not especially interesting even when debugging problems (raw PCI config space dump is far more useful)." Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Cc: Andrew Morton <akpm@osdl.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: improve buffer pages freeing strategyBorislav Petkov
Instead of freeing pages one by one, free them 2^order-wise. Also, mv __idetape_kfree_stage() to ide_tape_kfree_buffer(). [bart: add updating bh->b_data] Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: mv tape->pages_per_stage tape->pages_per_bufferBorislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: mv tape->stage_size tape->buffer_sizeBorislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: improve buffer allocation strategyBorislav Petkov
Instead of allocating pages for the buffer one by one, take advantage of the buddy alloc system and request them 2^order at a time. This increases the chance for bigger buffer parts to be contigious and reduces loop iteration count. While at it, rename function __idetape_kmalloc_stage() to ide_tape_kmalloc_buffer(). [bart: fold with "ide-tape: fix mem leak" patch to preserve bisectability] Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: add struct ide_io_ports (take 3)Bartlomiej Zolnierkiewicz
* Add struct ide_io_ports and use it instead of `unsigned long io_ports[]` in ide_hwif_t. * Rename io_ports[] in hw_regs_t to io_ports_array[]. * Use un-named union for 'unsigned long io_ports_array[]' and 'struct ide_io_ports io_ports' in hw_regs_t. * Remove IDE_*_OFFSET defines. v2: * scc_pata.c build fix from Stephen Rothwell. v3: * Fix ctl_adrr typo in Sparc-specific part of ns87415.c. (Noticed by Andrew Morton) Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: make ide_unregister() take 'ide_hwif_t *' as an argument (take 2)Bartlomiej Zolnierkiewicz
* Make ide_unregister() take 'ide_hwif_t *hwif' instead of 'unsigned int index' (hwif->index) as an argument and update all users accordingly. While at it: * Remove unnecessary checks for hwif != NULL from ide-pnp.c::idepnp_remove() and delkin_cb.c::delkin_cb_remove(). * Remove needless hwif->chipset assignment from scc_pata.c::scc_remove(). v2: * Fixup ide_unregister() documentation. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: sanitize ide_unregister() usageBartlomiej Zolnierkiewicz
* Remove ide_unregister() call from ide_exit() (host drivers take care of unregistering hwif-s themselves). * Remove ide_unregister() call from probe methods of bast-ide, palm_bk3710, ide-cs and delkin_cb host drivers (ide_find_port() returns only free ide_hwifs[] entries). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27mpc8xx-ide: use ide_find_port()Bartlomiej Zolnierkiewicz
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: add "noacpi" / "acpigtf" / "acpionboot" parametersBartlomiej Zolnierkiewicz
* Rename ide_noacpi{tfs,onboot} to ide_acpi{gtf,onboot} (+ reverse logic). * Move ide_*acpi* variables to ide-acpi.c and remove unnecessary initializers. * Add "noacpi" / "acpigtf" / "acpionboot" parameters. * Obsolete "ide=noacpi" / "ide=acpigtf" / "ide=acpionboot" kernel parameters. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27gayle: add "doubler" parameterBartlomiej Zolnierkiewicz
* Add "doubler" parameter to enable support for IDE doublers. * Obsolete "ide=doubler" kernel parameter. Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: add "cdrom=" and "chs=" parametersBartlomiej Zolnierkiewicz
* Add "cdrom=" and "chs=" parameters. * Obsolete "hdx=cdrom" and "hdx=cyls,heads,sects" kernel parameters. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: add "nodma|noflush|noprobe|nowerr=" parametersBartlomiej Zolnierkiewicz
* Add "nodma|noflush|noprobe|nowerr=" parameters. * Obsolete "hdx=noprobe|none|nowerr|nodma|noflush" kernel parameters. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: remove obsoleted "hdx=autotune" kernel parameterBartlomiej Zolnierkiewicz
* Remove obsoleted "hdx=autotune" kernel parameter (we always auto-tune PIO if possible nowadays). * Remove no longer needed ide_drive_t.autotune flag. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: remove IDE_HFLAG_NO_AUTOTUNE host flagBartlomiej Zolnierkiewicz
* Don't set IDE_HFLAG_NO_AUTOTUNE host flag in sgiioc4 and icside host drivers - there is no need for it as they don't implement ->set_pio_mode method. * Remove no longer needed IDE_HFLAG_NO_AUTOTUNE host flag. There should be no functional changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27cmd640: always auto-tune PIOBartlomiej Zolnierkiewicz
* Default to tuning PIO0 and disabling prefetch prior to probing devices for CONFIG_BLK_DEV_CMD640_ENHANCED=y case. * Always auto-tune PIO. * Remove no longer used retrieve_drive_counts(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: always auto-tune PIO in legacy VLB host driversBartlomiej Zolnierkiewicz
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: mark "idebus=" kernel parameter as obsoleted (take 2)Bartlomiej Zolnierkiewicz
We have "vlb|pci_clock=" parameters now. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: add "vlb|pci_clock=" parameterBartlomiej Zolnierkiewicz
* Add "vlb_clock=" parameter for specifying VLB clock frequency (in MHz). * Add "pci_clock=" parameter for specifying PCI bus clock frequency (in MHz). While at it: * qd65xx.c: rename {active,recovery}_cycle variables to {act,rec}_cyc. Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove comments markup from Documentation/ide/ide-tape.txtBorislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove pipelined mode description from Documentation/ide/ide-tape.txtBorislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove misc references to pipelined operation in the commentsBorislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove pipelined mode parametersBorislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove pipeline-specific members from struct ide_tape_objBorislav Petkov
Bart: - merge "ide-tape: remove pipeline-specific code from idetape_setup" patch - cleanup __idetape_discard_read_pipeline() - cleanup idetape_empty_write_pipeline() - fix 't' assignment in idetape_setup() - fix idetape_blkdev_ioctl() w.r.t. 'nr_stages' Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove pipelined mode tape control flagsBorislav Petkov
[bart: sync patch with current code and fix idetape_init_read()] Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove remaining pipeline functionalityBorislav Petkov
The driver is using now solely its own request queue. - tape->next_stage is always NULL so it is safe to remove all code depending on tape->next_stage != NULL - this patch removes the last place which sets IDETAPE_FLAG_PIPELINE_ACTIVE in tape->flags [bart: add above explanations] Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: unwrap idetape_queue_pc_tail()Borislav Petkov
idetape_queue_pc_tail() is a wrapper for its __idetape_queue_pc_tail() counterpart and has no other functionality. Remove it and call the "wrapped" function directly. Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove pipeline-specific code from idetape_end_request()Borislav Petkov
As a side effect, remove unused idetape_kfree_stage() and idetape_abort_pipeline() [bart: resurrect taking tape->lock + clearing IDETAPE_FLAG_PIPELINE_ACTIVE] Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove idetape_remove_stage_head()Borislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove idetape_pipeline_size()Borislav Petkov
The computation of the block offset of the the tape position (MTIOCPOS, MTIOCGET) is not influenced by the stages queued in the pipeline anymore but by the size of the current buffer which is going to be sent to the drive. [bart: resurrect deleted idetape_wait_for_pipeline() call] Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove pipeline-specific code in idetape_space_over_filemarks()Borislav Petkov
Since we don't do pipeline read-ahead anymore, we don't have to look for filemarks we have crossed. Therefore, remove the code chunk that does that and pass on the command to the tape. As a side effect, remove unused idetape_wait_first_stage(). Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove unused parameter from idetape_copy_stage_from_userBorislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove unused parameter from idetape_copy_stage_to_userBorislav Petkov
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove pipeline-specific code from idetape_add_chrdev_read_request()Borislav Petkov
In order to do away with queueing read requests on the pipeline, several things have to be done: 1. Do not allocate additional pipeline stages in idetape_init_read() until (tape->nr_stages < max_stages) and do only read operation preparations. As a collateral result, idetape_add_stage_tail() becomes unused so remove it. 2. Queue the read request's buffer directly thru idetape_queue_rw_tail(). 3. Remove now unused idetape_kmalloc_stage() and idetape_switch_buffers(). [bart: simplify the original patch] Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape remove pipeline speed/control calculationsBorislav Petkov
Pipeline handling calculations in idetape_calculate_speeds() can go since they do not have any effect on other functionality besides: 1. info is only being exported through /proc as a read-only item (controlled_pipeline_head_speed, uncontrolled_pipeline_head_speed) 2. used in idetape_restart_speed_control() which, in turn, is unrelated to other code 3. used only for pipeline frames number accounting (tape->pipeline_head), also unused elsewhere. 4.some variables are: only written to: tape->buffer_head; unused: tape->tape_head, tape->last_tape_head Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove pipeline-specific code from idetape_add_chrdev_write_requestBorislav Petkov
Refrain from adding more write requests to the pipeline and queue them directly on the device's request queue instead. [bart: re-do for minimal behavior changes] Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide-tape: remove tape->cache_stageBorislav Petkov
Prior to allocating a new pipeline stage, the code checked for the existence of a cached pipeline stage to use. Do away with and stick to normal pipeline stages only. [bart: keep idetape_kmalloc_stage() for now] Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: remove obsoleted "hdx=noautotune" kernel parameterBartlomiej Zolnierkiewicz
Remove obsoleted "hdx=noautotune" kernel parameter (it has been obsoleted since 1 Nov 2004). Then make ide_hwif_t.autotune a single bit flag and remove no longer needed IDE_TUNE_* defines. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: remove obsoleted "idex=" kernel parametersBartlomiej Zolnierkiewicz
* Remove obsoleted "idex=" kernel parameters. * Make probe_* and cmd640_vlb variables static. Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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