28 Apr, 2008
4 commits
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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
... -
* '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_*
... -
* 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
... -
* '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
27 Apr, 2008
36 commits
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Use kvm own refcounting instead of playing with ->filp->f_count.
That will allow to get rid of a lot of crap in anon_inode_getfd() and
kill a race in kvm_dev_ioctl_create_vm() (file might have been closed
immediately by another thread, so ->filp might point to already freed
struct file when we get around to setting it).Signed-off-by: Al Viro
Signed-off-by: Avi Kivity -
Device Control Registers are essentially another address space found on PowerPC
4xx processors, analogous to PIO on x86. DCRs are always 32 bits, and can be
identified by a 32-bit number. We forward most DCR accesses to userspace for
emulation (with the exception of CPR0 registers, which can be read directly
for simplicity in timebase frequency determination).Signed-off-by: Hollis Blanchard
Signed-off-by: Avi Kivity -
It's a globally exported symbol now.
Signed-off-by: Hollis Blanchard
Signed-off-by: Avi Kivity -
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
Signed-off-by: Christian Borntraeger
Signed-off-by: Carsten Otte
Signed-off-by: Avi Kivity -
It creates files in proc with obsoleted ->get_info interface.
Signed-off-by: Alexey Dobriyan
Cc: Andrew Morton
Signed-off-by: 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
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* 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
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* 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
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* 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
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* 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
Signed-off-by: Bartlomiej 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
Acked-by: Sergei Shtylyov
Signed-off-by: Bartlomiej 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
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Remove obsoleted "idex=reset" kernel parameter
(it has been obsoleted since 1 Nov 2004).Then remove corresponding code from ide_probe_port()
and no longer used ->reset field from ide_hwif_t.Signed-off-by: Bartlomiej Zolnierkiewicz
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Add "ignore_cable" parameter:
* "ide_core.ignore_cable=[interface_number]" boot option if IDE is built-in
(i.e. "ide_core.ignore_cable=1" to force ignoring cable for "ide1")* "ignore_cable=[interface_number]" module parameter (for ide_core module)
if IDE is compiled as modulev2:
* Add ide_port_apply_params() helper
- use it in ide_device_add_all() and ide_scan_port().* Make it possible to later disable ignoring cable detection by passing
"[interface_number]:0" to /sys/module/ide_core/parameters/ignore_cable
(however sysfs interface is not enabled yet since it needs some other
IDE changes to make it work reliable).Signed-off-by: Bartlomiej Zolnierkiewicz
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Timers that fire between guest hlt and vcpu_block's add_wait_queue() are
ignored, possibly resulting in hangs.Also make sure that atomic_inc and waitqueue_active tests happen in the
specified order, otherwise the following race is open:CPU0 CPU1
if (waitqueue_active(wq))
add_wait_queue()
if (!atomic_read(pit_timer->pending))
schedule()
atomic_inc(pit_timer->pending)Signed-off-by: Marcelo Tosatti
Signed-off-by: Avi Kivity -
This interface allows user a space application to read the trace of kvm
related events through relayfs.Signed-off-by: Feng (Eric) Liu
Signed-off-by: Avi Kivity -
Trace markers allow userspace to trace execution of a virtual machine
in order to monitor its performance.Signed-off-by: Feng (Eric) Liu
Signed-off-by: Avi Kivity -
This patch introduces a gfn_to_pfn() function and corresponding functions like
kvm_release_pfn_dirty(). Using these new functions, we can modify the x86
MMU to no longer assume that it can always get a struct page for any given gfn.We don't want to eliminate gfn_to_page() entirely because a number of places
assume they can do gfn_to_page() and then kmap() the results. When we support
IO memory, gfn_to_page() will fail for IO pages although gfn_to_pfn() will
succeed.This does not implement support for avoiding reference counting for reserved
RAM or for IO memory. However, it should make those things pretty straight
forward.Since we're only introducing new common symbols, I don't think it will break
the non-x86 architectures but I haven't tested those. I've tested Intel,
AMD, NPT, and hugetlbfs with Windows and Linux guests.[avi: fix overflow when shifting left pfns by adding casts]
Signed-off-by: Anthony Liguori
Signed-off-by: Avi Kivity -
the main purpose of adding this functions is the abilaty to release the
spinlock that protect the kvm list while still be able to do operations
on a specific kvm in a safe way.Signed-off-by: Izik Eidus
Signed-off-by: Avi Kivity -
This patch introduces interpretation of some diagnose instruction intercepts.
Diagnose is our classic architected way of doing a hypercall. This patch
features the following diagnose codes:
- vm storage size, that tells the guest about its memory layout
- time slice end, which is used by the guest to indicate that it waits
for a lock and thus cannot use up its time slice in a useful way
- ipl functions, which a guest can use to reset and reboot itselfIn order to implement ipl functions, we also introduce an exit reason that
causes userspace to perform various resets on the virtual machine. All resets
are described in the principles of operation book, except KVM_S390_RESET_IPL
which causes a reboot of the machine.Acked-by: Martin Schwidefsky
Signed-off-by: Christian Borntraeger
Signed-off-by: Carsten Otte
Signed-off-by: Avi Kivity -
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processorstruct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky
Signed-off-by: Heiko Carstens
Signed-off-by: Carsten Otte
Signed-off-by: Christian Borntraeger
Signed-off-by: Avi Kivity -
This path introduces handling of sie intercepts in three flavors: Intercepts
are either handled completely in-kernel by kvm_handle_sie_intercept(),
or passed to userspace with corresponding data in struct kvm_run in case
kvm_handle_sie_intercept() returns -ENOTSUPP.
In case of partial execution in kernel with the need of userspace support,
kvm_handle_sie_intercept() may choose to set up struct kvm_run and return
-EREMOTE.The trivial intercept reasons are handled in this patch:
handle_noop() just does nothing for intercepts that don't require our support
at all
handle_stop() is called when a cpu enters stopped state, and it drops out to
userland after updating our vcpu state
handle_validity() faults in the cpu lowcore if needed, or passes the request
to userlandAcked-by: Martin Schwidefsky
Signed-off-by: Christian Borntraeger
Signed-off-by: Carsten Otte
Signed-off-by: Avi Kivity -
This patch contains the port of Qumranet's kvm kernel module to IBM zSeries
(aka s390x, mainframe) architecture. It uses the mainframe's virtualization
instruction SIE to run virtual machines with up to 64 virtual CPUs each.
This port is only usable on 64bit host kernels, and can only run 64bit guest
kernels. However, running 31bit applications in guest userspace is possible.The following source files are introduced by this patch
arch/s390/kvm/kvm-s390.c similar to arch/x86/kvm/x86.c, this implements all
arch callbacks for kvm. __vcpu_run calls back into
sie64a to enter the guest machine context
arch/s390/kvm/sie64a.S assembler function sie64a, which enters guest
context via SIE, and switches world before and after that
include/asm-s390/kvm_host.h contains all vital data structures needed to run
virtual machines on the mainframe
include/asm-s390/kvm.h defines kvm_regs and friends for user access to
guest register content
arch/s390/kvm/gaccess.h functions similar to uaccess to access guest memory
arch/s390/kvm/kvm-s390.h header file for kvm-s390 internals, extended by
later patchesAcked-by: Martin Schwidefsky
Signed-off-by: Christian Borntraeger
Signed-off-by: Heiko Carstens
Signed-off-by: Carsten Otte
Signed-off-by: Avi Kivity -
The SIE instruction on s390 uses the 2nd half of the page table page to
virtualize the storage keys of a guest. This patch offers the s390_enable_sie
function, which reorganizes the page tables of a single-threaded process to
reserve space in the page table:
s390_enable_sie makes sure that the process is single threaded and then uses
dup_mm to create a new mm with reorganized page tables. The old mm is freed
and the process has now a page status extended field after every page table.Code that wants to exploit pgstes should SELECT CONFIG_PGSTE.
This patch has a small common code hit, namely making dup_mm non-static.
Edit (Carsten): I've modified Martin's patch, following Jeremy Fitzhardinge's
review feedback. Now we do have the prototype for dup_mm in
include/linux/sched.h. Following Martin's suggestion, s390_enable_sie() does now
call task_lock() to prevent race against ptrace modification of mm_users.Signed-off-by: Martin Schwidefsky
Signed-off-by: Carsten Otte
Acked-by: Andrew Morton
Signed-off-by: Avi Kivity -
Signed-off-by: Avi Kivity
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include/linux/kvm.h defines struct kvm_dirty_log to
[...]
union {
void __user *dirty_bitmap; /* one bit per page */
__u64 padding;
};__user requires compiler.h to compile. Currently, this works on x86
only coincidentally due to other include files. This patch makes
kvm.h compile in all cases.Signed-off-by: Christian Borntraeger
Signed-off-by: Avi Kivity -
Hypercall based pte updates are faster than faults, and also allow use
of the lazy MMU mode to batch operations.Don't report the feature if two dimensional paging is enabled.
[avi:
- one mmu_op hypercall instead of one per op
- allow 64-bit gpa on hypercall
- don't pass host errors (-ENOMEM) to guest][akpm: warning fix on i386]
Signed-off-by: Marcelo Tosatti
Signed-off-by: Andrew Morton
Signed-off-by: Avi Kivity -
Add basic KVM paravirt support. Avoid vm-exits on IO delays.
Signed-off-by: Marcelo Tosatti
Signed-off-by: Avi Kivity -
Add basic KVM paravirt support. Avoid vm-exits on IO delays.
Signed-off-by: Marcelo Tosatti
Signed-off-by: Avi Kivity -
Signed-off-by: Sheng Yang
Signed-off-by: Avi Kivity -
The patch moves the PIT model from userspace to kernel, and increases
the timer accuracy greatly.[marcelo: make last_injected_time per-guest]
Signed-off-by: Sheng Yang
Signed-off-by: Marcelo Tosatti
Tested-and-Acked-by: Alex Davis
Signed-off-by: Avi Kivity -
In the current inject_page_fault path KVM only checks if there is another PF
pending and injects a DF then. But it has to check for a pending DF too to
detect a shutdown condition in the VCPU. If this is not detected the VCPU goes
to a PF -> DF -> PF loop when it should triple fault. This patch detects this
condition and handles it with an KVM_SHUTDOWN exit to userspace.Signed-off-by: Joerg Roedel
Signed-off-by: Avi Kivity -
Create large pages mappings if the guest PTE's are marked as such and
the underlying memory is hugetlbfs backed. If the largepage contains
write-protected pages, a large pte is not used.Gives a consistent 2% improvement for data copies on ram mounted
filesystem, without NPT/EPT.Anthony measures a 4% improvement on 4-way kernbench, with NPT.
Signed-off-by: Marcelo Tosatti
Signed-off-by: Avi Kivity -
Mark zapped root pagetables as invalid and ignore such pages during lookup.
This is a problem with the cr3-target feature, where a zapped root table fools
the faulting code into creating a read-only mapping. The result is a lockup
if the instruction can't be emulated.Signed-off-by: Marcelo Tosatti
Cc: Anthony Liguori
Signed-off-by: Avi Kivity -
Signed-off-by: Avi Kivity
-
Signed-off-by: Avi Kivity
