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* KVM: Add a special exit reason when exiting due to an interruptAvi Kivity2007-05-03
| | | | | | | | This is redundant, as we also return -EINTR from the ioctl, but it allows us to examine the exit_reason field on resume without seeing old data. Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Fold kvm_run::exit_type into kvm_run::exit_reasonAvi Kivity2007-05-03
| | | | | | | | | Currently, userspace is told about the nature of the last exit from the guest using two fields, exit_type and exit_reason, where exit_type has just two enumerations (and no need for more). So fold exit_type into exit_reason, reducing the complexity of determining what really happened. Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Allow userspace to process hypercalls which have no kernel handlerAvi Kivity2007-05-03
| | | | | | This is useful for paravirtualized graphics devices, for example. Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Add method to check for backwards-compatible API extensionsAvi Kivity2007-05-03
| | | | Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Remove the 'emulated' field from the userspace interfaceAvi Kivity2007-05-03
| | | | | | | We no longer emulate single instructions in userspace. Instead, we service mmio or pio requests. Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Handle cpuid in the kernel instead of punting to userspaceAvi Kivity2007-05-03
| | | | | | | | | | | | | | KVM used to handle cpuid by letting userspace decide what values to return to the guest. We now handle cpuid completely in the kernel. We still let userspace decide which values the guest will see by having userspace set up the value table beforehand (this is necessary to allow management software to set the cpu features to the least common denominator, so that live migration can work). The motivation for the change is that kvm kernel code can be impacted by cpuid features, for example the x86 emulator. Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Do not communicate to userspace through cpu registers during PIOAvi Kivity2007-05-03
| | | | | | | | | | | | | Currently when passing the a PIO emulation request to userspace, we rely on userspace updating %rax (on 'in' instructions) and %rsi/%rdi/%rcx (on string instructions). This (a) requires two extra ioctls for getting and setting the registers and (b) is unfriendly to non-x86 archs, when they get kvm ports. So fix by doing the register fixups in the kernel and passing to userspace only an abstract description of the PIO to be done. Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Use a shared page for kernel/user communication when runing a vcpuAvi Kivity2007-05-03
| | | | | | | | | Instead of passing a 'struct kvm_run' back and forth between the kernel and userspace, allocate a page and allow the user to mmap() it. This reduces needless copying and makes the interface expandable by providing lots of free space. Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Fix bogus sign extension in mmu mapping auditAvi Kivity2007-05-03
| | | | | | | | | | When auditing a 32-bit guest on a 64-bit host, sign extension of the page table directory pointer table index caused bogus addresses to be shown on audit errors. Fix by declaring the index unsigned. Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Use own minor numberAvi Kivity2007-05-03
| | | | | | Use the minor number (232) allocated to kvm by lanana. Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Use the generic skip_emulated_instruction() in hypercall codeDor Laor2007-05-03
| | | | | | | | Instead of twiddling the rip registers directly, use the skip_emulated_instruction() function to do that for us. Signed-off-by: Dor Laor <dor.laor@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: Fix guest register corruption on paravirt hypercallDor Laor2007-05-03
| | | | | | | | The hypercall code mixes up the ->cache_regs() and ->decache_regs() callbacks, resulting in guest register corruption. Signed-off-by: Dor Laor <dor.laor@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
* libata: honour host controllers that want just one hostLinus Torvalds2007-04-30
| | | | | | | | | | | | | | | | | | | | The Marvell IDE interface on my machine would hit a BUG_ON() in lib/iomem.c because it was calling ata_pci_init_one() specifying just a single port on the host, but that would actually end up trying to initialize two ports, the second one with bogus information. This fixes "ata_pci_init_one()" so that it actually passes down the n_ports variable that it got from the low-level driver to the host allocation routine ("ata_host_alloc_pinfo()"), which results in the ATA layer actually having the correct port number information. And in order to make it all work, I also needed to fix a few places that had incorrectly hard-coded the fact that a host always had exactly two ports (both ata_pci_init_bmdma() and ata_request_legacy_irqs() would just always iterate over both ports). Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* power management: implement pm_ops.valid for everybodyJohannes Berg2007-04-30
| | | | | | | | | | | | | | | | | | | | | | Almost all users of pm_ops only support mem sleep, don't check in .valid and don't reject any others in .prepare so users can be confused if they check /sys/power/state, especially when new states are added (these would then result in s-t-r although they're supposed to be something different). This patch implements a generic pm_valid_only_mem function that is then exported for users and puts it to use in almost all existing pm_ops. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: David Brownell <david-b@pacbell.net> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: linux-pm@lists.linux-foundation.org Cc: Len Brown <lenb@kernel.org> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Greg KH <greg@kroah.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2007-04-30
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (56 commits) ieee1394: remove garbage from Kconfig ieee1394: more help in Kconfig ieee1394: ohci1394: Fix mistake in printk message. ieee1394: ohci1394: remove unnecessary rcvPhyPkt bit flipping in LinkControl register ieee1394: ohci1394: fix cosmetic problem in error logging ieee1394: eth1394: send async streams at S100 on 1394b buses ieee1394: eth1394: fix error path in module_init ieee1394: eth1394: correct return codes in hard_start_xmit ieee1394: eth1394: hard_start_xmit is called in atomic context ieee1394: eth1394: some conditions are unlikely ieee1394: eth1394: clean up fragment_overlap ieee1394: eth1394: don't use alloc_etherdev ieee1394: eth1394: omit useless set_mac_address callback ieee1394: eth1394: CONFIG_INET is always defined ieee1394: eth1394: allow MTU bigger than 1500 ieee1394: unexport highlevel_host_reset ieee1394: eth1394: contain host reset ieee1394: eth1394: shorter error messages ieee1394: eth1394: correct a memset argument ieee1394: eth1394: refactor .probe and .update ...
| * ieee1394: remove garbage from KconfigStefan Richter2007-04-29
| | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: more help in KconfigStefan Richter2007-04-29
| | | | | | | | | | | | | | | | - s/Device Drivers/Controllers/ - clarify who needs pcilynx - don't recommend Y for raw1394; M is typically used Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: ohci1394: Fix mistake in printk message.Simon Arlott2007-04-29
| | | | | | | | | | | | | | | | Fix the "attempting to setting" message in ohci1394. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: ohci1394: remove unnecessary rcvPhyPkt bit flipping in LinkControl ↵Bernhard Kauer2007-04-29
| | | | | | | | | | | | | | | | | | | | register Remove the unneeded code that clears, sets and again clears the rcvPhyPkt bit in the ohci1394 LinkControl register in ohci_initialize(). Signed-off-by: Bernhard Kauer <kauer@os.inf.tu-dresden.de> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: ohci1394: fix cosmetic problem in error loggingStefan Richter2007-04-29
| | | | | | | | | | | | | | If posted write failed, an "Unhandled interrupt(s) 0x00000100" message was logged by mistake. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: send async streams at S100 on 1394b busesStefan Richter2007-04-29
| | | | | | | | | | | | | | eth1394 did not work on buses consisting of S100B...S400B hardware because it attempted to send GASP packets at S800. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: fix error path in module_initAkinobu Mita2007-04-29
| | | | | | | | | | | | | | | | | | | | This patch fixes some error handlings in eth1394: - check return value of kmem_cache_create() - cleanup resources if hpsb_register_protocol() fails Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (whitespace)
| * ieee1394: eth1394: correct return codes in hard_start_xmitStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | This patch actually doesn't change anything because there was always 0 == NETDEV_TX_OK returned before. TODO: Return NETDEV_TX_BUSY in error case and test in different error conditions. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: hard_start_xmit is called in atomic contextStefan Richter2007-04-29
| | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: some conditions are unlikelyStefan Richter2007-04-29
| | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: clean up fragment_overlapStefan Richter2007-04-29
| | | | | | | | | | | | | | | | offset > fi->offset + fi->len - 1 == !(offset < fi->offset + fi->len) offset + len - 1 < fi->offset == !(offset + len > fi->offset) !(A || B) == (!A && !B) Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: don't use alloc_etherdevStefan Richter2007-04-29
| | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: omit useless set_mac_address callbackStefan Richter2007-04-29
| | | | | | | | | | | | We can't reconfigure the MAC address, hence we don't need the callback. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: CONFIG_INET is always definedStefan Richter2007-04-29
| | | | | | | | | | | | because CONFIG_IEEE1394_ETH1394 depends on it. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: allow MTU bigger than 1500Stefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | RFC 2734 says: "IP-capable nodes may operate with an MTU size larger than the default [1500 octets], but the means by which a larger MTU is configured are beyond the scope of this document." Allow users to set an MTU bigger than 1500. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: unexport highlevel_host_resetAdrian Bunk2007-04-29
| | | | | | | | | | | | | | highlevel_host_reset no longer has any modular users. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: contain host resetStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | Call only eth1394's own host reset handler from .tx_timeout, not the reset hooks of all other IEEE 1394 drivers. A minor drawback of this patch is that ether1394_host_reset by timeout is not serialized against ether1394_host_reset by bus reset. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: shorter error messagesStefan Richter2007-04-29
| | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: correct a memset argumentStefan Richter2007-04-29
| | | | | | | | | | | | The old argument calculated the correct value in a wrong way. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: refactor .probe and .updateStefan Richter2007-04-29
| | | | | | | | | | | | | | Move common code into an extra function. This implicitly adds a missing node_info->fifo = CSR1212_INVALID_ADDR_SPACE; to .update. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: .probe and .update may sleepStefan Richter2007-04-29
| | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: coding styleStefan Richter2007-04-29
| | | | | | | | | | | | | | Adjust white space and line wraps. Remove unnecessary parentheses and braces, unused macros, and some of the more redundant comments. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: Move common recv_init code to helper functionJean Delvare2007-04-29
| | | | | | | | | | | | | | | | | | There is some common code between ether1394_open and ether1394_add_host which can be moved to a separate helper function for a slightly smaller eth1394 driver (-160 bytes on i386.) Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: don't autoload by hotplug when ohci1394 startsStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Until now, ieee1394 put an IP-over-1394 capability entry into each new host's config ROM. As soon as the controller was initialized --- i.e. right after modprobe ohci1394 --- this entry triggered a hotplug event which typically caused auto-loading of eth1394. This irritated or annoyed many users and distributors. Of course they could blacklist eth1394, but then ieee1394 wrongly advertized IP-over- 1394 capability to the FireWire bus. Therefore - remove the offending kernel config option IEEE1394_CONFIG_ROM_IP1394, - let eth1394 add the ROM entry by itself, i.e. only after eth1394 was loaded. This fixes http://bugzilla.kernel.org/show_bug.cgi?id=7793 . To emulate the behaviour of older kernels, simply add the following to to /etc/modprobe.conf: install ohci1394 /sbin/modprobe eth1394; \ /sbin/modprobe --ignore-install ohci1394 Note, autoloading of eth1394 when an _external_ IP-over-1394 capable device is discovered is _not_ affected by this patch. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: reduce excessive function inliningStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | Shrinks eth1394.ko by about 5%. Many of these functions have only one caller and are therefore auto- inlined anyway. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: clean up host removalStefan Richter2007-04-29
| | | | | | | | | | | | ether1394_add_host() guarantees that hi->dev != NULL if hi != NULL. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: eth1394: unregister address space in failure caseStefan Richter2007-04-29
| | | | | | | | | | | | | | Warn if hpsb_allocate_and_register_addrspace() failed. Unregister the address space if something else failed. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: send async streams at S100Stefan Richter2007-04-29
| | | | | | | | | | | | | | The comment says it all. This affects only asynchronous streams sent via raw1394; the eth1394 driver has own code and needs an own fix. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: SPIN_LOCK_UNLOCKED cleanupMilind Arun Choudhary2007-04-29
| | | | | | | | | | | | | | SPIN_LOCK_UNLOCKED cleanup,use DEFINE_SPINLOCK instead Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: nodemgr: unify some error messagesStefan Richter2007-04-29
| | | | | | | | | | | | Shrinks object file size a little bit. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: nodemgr: less noise in dmesgStefan Richter2007-04-29
| | | | | | | | | | | | | | Everytime when eth1394 or a libraw1394 client updates the configuration ROM, a certain sysfs attribute cannot be added since it already exists. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: unroll a weird macroStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | This is a coding style touch-up for ieee1394's handle_incoming_packet(). A preprocessor macro contained hardwired variable names and, even worse, the 'break' keyword. This macro is now unrolled and removed. Also, all 'break's which had the effect of a return are replaced by return. And a FIXME comment is brought up to date. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: iso.c needs sched.hAndrew Morton2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | alpha: drivers/ieee1394/iso.c: In function 'hpsb_iso_xmit_sync': drivers/ieee1394/iso.c:440: error: invalid use of undefined type 'struct task_struct' drivers/ieee1394/iso.c:440: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function) drivers/ieee1394/iso.c:440: error: (Each undeclared identifier is reported only once drivers/ieee1394/iso.c:440: error: for each function it appears in.) drivers/ieee1394/iso.c:440: warning: implicit declaration of function 'signal_pending' drivers/ieee1394/iso.c:440: error: invalid use of undefined type 'struct task_struct' drivers/ieee1394/iso.c:440: warning: implicit declaration of function 'schedule' drivers/ieee1394/iso.c: In function 'hpsb_iso_wake': drivers/ieee1394/iso.c:562: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function) Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (brought into alphabetic order)
| * ieee1394: some more includesStefan Richter2007-04-29
| | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * ieee1394: ieee1394_transactions needs sched.hTorsten Kaiser2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/ieee1394/ieee1394_transactions.c fails for me if CONFIG_SMP=n gcc complains: CC drivers/ieee1394/ieee1394_transactions.o drivers/ieee1394/ieee1394_transactions.c: In function 'hpsb_get_tlabel': drivers/ieee1394/ieee1394_transactions.c:183: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function) drivers/ieee1394/ieee1394_transactions.c:183: error: (Each undeclared identifier is reported only once Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (added comment)
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