- 03 5月, 2007 20 次提交
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由 Avi Kivity 提交于
The current string pio interface communicates using guest virtual addresses, relying on userspace to translate addresses and to check permissions. This interface cannot fully support guest smp, as the check needs to take into account two pages at one in case an unaligned string transfer straddles a page boundary. Change the interface not to communicate guest addresses at all; instead use a buffer page (mmaped by userspace) and do transfers there. The kernel manages the virtual to physical translation and can perform the checks atomically by taking the appropriate locks. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Some ioctls ignore their arguments. By requiring them to be zero now, we allow a nonzero value to have some special meaning in the future. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
This allows us to store offsets in the kernel/user kvm_run area, and be sure that userspace has them mapped. As offsets can be outside the kvm_run struct, userspace has no way of knowing how much to mmap. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Allow a special signal mask to be used while executing in guest mode. This allows signals to be used to interrupt a vcpu without requiring signal delivery to a userspace handler, which is quite expensive. Userspace still receives -EINTR and can get the signal via sigwait(). Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Older userspace didn't care, but newer userspace (with the cpuid changes) does. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
This is useful for paravirtualized graphics devices, for example. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
The recent changes have left the ioctl numbers in complete disarray. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
That ioctl does not transfer any data, so it should be an _IO rather than an _IOW. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
We no longer emulate single instructions in userspace. Instead, we service mmio or pio requests. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
This allows users to actually build prgrams that use kvm without the entire source tree. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Avi Kivity 提交于
Use the minor number (232) allocated to kvm by lanana. Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Dor Laor 提交于
Instead of twiddling the rip registers directly, use the skip_emulated_instruction() function to do that for us. Signed-off-by: NDor Laor <dor.laor@qumranet.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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由 Dor Laor 提交于
The hypercall code mixes up the ->cache_regs() and ->decache_regs() callbacks, resulting in guest register corruption. Signed-off-by: NDor Laor <dor.laor@qumranet.com> Signed-off-by: NAvi Kivity <avi@qumranet.com>
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- 01 5月, 2007 11 次提交
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由 Linus Torvalds 提交于
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: NJeff Garzik <jeff@garzik.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Rientjes 提交于
For backwards compatibility, call_platform_enable_wakeup() can return 0 instead of -EIO since we aren't guaranteed to have errno defined. Cc: David Brownell <david-b@pacbell.net> Signed-off-by: NDavid Rientjes <rientjes@google.com> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jeremy Fitzhardinge 提交于
Add a kvasprintf() function to complement kasprintf(). No in-tree users yet, but I have some coming up. [akpm@linux-foundation.org: EXPORT it] Signed-off-by: NJeremy Fitzhardinge <jeremy@xensource.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Keir Fraser <keir@xensource.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johannes Berg 提交于
This patch changes the docs and behaviour from "all states valid" to "no states valid" if no .valid callback is assigned. Users of pm_ops that only need mem sleep can assign pm_valid_only_mem without any overhead, others will require more elaborate callbacks. Now that all users of pm_ops have a .valid callback this is a safe thing to do and prevents things from getting messy again as they were before. Signed-off-by: NJohannes Berg <johannes@sipsolutions.net> Acked-by: NPavel Machek <pavel@ucw.cz> Looks-okay-to: Rafael J. Wysocki <rjw@sisk.pl> Cc: <linux-pm@lists.linux-foundation.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johannes Berg 提交于
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: NJohannes Berg <johannes@sipsolutions.net> Cc: David Brownell <david-b@pacbell.net> Acked-by: NPavel Machek <pavel@ucw.cz> Cc: linux-pm@lists.linux-foundation.org Cc: Len Brown <lenb@kernel.org> Acked-by: NRussell 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: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johannes Berg 提交于
This patch removes the firmware disk suspend mode which is the wrong approach, it is supposed to be used for implementing firmware-based disk suspend but cannot actually be used for that. Signed-off-by: NJohannes Berg <johannes@sipsolutions.net> Acked-by: NPavel Machek <pavel@ucw.cz> Cc: <linux-pm@lists.linux-foundation.org> Cc: David Brownell <david-b@pacbell.net> Cc: Len Brown <lenb@kernel.org> Acked-by: NRussell 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: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Johannes Berg 提交于
This patch series cleans up some misconceptions about pm_ops. Some users of the pm_ops structure attempt to use it to stop the user from entering suspend to disk, this, however, is not possible since the user can always use "shutdown" in /sys/power/disk and then the pm_ops are never invoked. Also, platforms that don't support suspend to disk simply should not allow configuring SOFTWARE_SUSPEND (read the help text on it, it only selects suspend to disk and nothing else, all the other stuff depends on PM). The pm_ops structure is actually intended to provide a way to enter platform-defined sleep states (currently supported states are "standby" and "mem" (suspend to ram)) and additionally (if SOFTWARE_SUSPEND is configured) allows a platform to support a platform specific way to enter low-power mode once everything has been saved to disk. This is currently only used by ACPI (S4). This patch: The pm_ops.pm_disk_mode is used in totally bogus ways since nobody really seems to understand what it actually does. This patch clarifies the pm_disk_mode description. It also removes all the arm and sh users that think they can veto suspend to disk via pm_ops; not so since the user can always do echo shutdown > /sys/power/disk, they need to find a better way involving Kconfig or such. ACPI is the only user left with a non-zero pm_disk_mode. The patch also sets the default mode to shutdown again, but when a new pm_ops is registered its pm_disk_mode is selected as default, that way the default stays for ACPI where it is apparently required. Signed-off-by: NJohannes Berg <johannes@sipsolutions.net> Cc: David Brownell <david-b@pacbell.net> Acked-by: NPavel Machek <pavel@ucw.cz> Cc: <linux-pm@lists.linux-foundation.org> Cc: Len Brown <lenb@kernel.org> Acked-by: NRussell King <rmk@arm.linux.org.uk> Cc: Greg KH <greg@kroah.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Acked-by: NPaul Mundt <lethal@linux-sh.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jeff Mahoney 提交于
We're getting lockdep warnings due to a post-2.6.21-rc7 bugfix. The xattr_sem can never be taken in the manner described. Internal inodes are protected by I_PRIVATE. Add the appropriate annotation. Cc: <stable@kernel.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Robert Peterson 提交于
Today's print_symbol function dumps a kernel symbol with printk. This patch extends the functionality of kallsyms.c so that the symbol lookup function may be used without the printk. This is useful for modules that want to dump symbols elsewhere, for example, to debugfs. I intend to use the new function call in the GFS2 file system (which will be a separate patch). [akpm@linux-foundation.org: build fix] [clameter@sgi.com: sprint_symbol should return length of string like sprintf] Signed-off-by: NRobert Peterson <rpeterso@redhat.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Sam Ravnborg <sam@ravnborg.org> Acked-by: NPaulo Marques <pmarques@grupopie.com> Signed-off-by: NChristoph Lameter <clameter@sgi.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David S. Miller 提交于
When allocating local ports, do not allow a bind to a port with a specific local address when a bind to that port with a wildcard local address already exists. Noticed by Linus. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 David S. Miller 提交于
I accidently applied an earlier version of Eric Dumazet's patch, from March 21st. His version from March 30th didn't have these bugs, so this just interdiffs to the correct patch. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 30 4月, 2007 9 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6由 Linus Torvalds 提交于
* '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 ...
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由 Linus Torvalds 提交于
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid: (21 commits) USB HID: don't warn on idVendor == 0 USB HID: add 'quirks' module parameter USB HID: add support for dynamically-created quirks USB HID: clarify static quirk handling as squirks USB HID: encapsulate quirk handling into hid-quirks.c USB HID: EMS USBII device needs HID_QUIRK_MULTI_INPUT HID: update copyright and authorship macro HID: introduce proper zeroing of unused bits in output reports USB HID: add support for WiseGroup MP-8800 Quad Joypad USB HID: add FF support for Logitech Force 3D Pro Joystick USB HID: numlock quirk for dell W7658 keyboard USB HID: Logitech MX3000 keyboard needs report descriptor quirk USB HID: extend quirk for Logitech S510 keyboard USB HID: usbkbd/usbmouse - handle errors when registering devices USB HID: add QUIRK_HIDDEV for Belkin Flip KVM HID: enable dead keys on a belkin wireless keyboard USB HID: Thustmaster firestorm dual power v1 support USB HID: specify explicit size for hid_blacklist.quirks USB HID: fix retry & reset logic USB HID: consolidate vendor/product ids ...
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由 Linus Torvalds 提交于
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits) [IPV4] SNMP: Support OutMcastPkts and OutBcastPkts [IPV4] SNMP: Support InMcastPkts and InBcastPkts [IPV4] SNMP: Support InTruncatedPkts [IPV4] SNMP: Support InNoRoutes [SNMP]: Add definitions for {In,Out}BcastPkts [TCP] FRTO: RFC4138 allows Nagle override when new data must be sent [TCP] FRTO: Delay skb available check until it's mandatory [XFRM]: Restrict upper layer information by bundle. [TCP]: Catch skb with S+L bugs earlier [PATCH] INET : IPV4 UDP lookups converted to a 2 pass algo [L2TP]: Add the ability to autoload a pppox protocol module. [SKB]: Introduce skb_queue_walk_safe() [AF_IUCV/IUCV]: smp_call_function deadlock [IPV6]: Fix slab corruption running ip6sic [TCP]: Update references in two old comments [XFRM]: Export SPD info [IPV6]: Track device renames in snmp6. [SCTP]: Fix sctp_getsockopt_local_addrs_old() to use local storage. [NET]: Remove NETIF_F_INTERNAL_STATS, default to internal stats. [NETPOLL]: Remove CONFIG_NETPOLL_RX ...
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git://git.kernel.dk/data/git/linux-2.6-block由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block: [PATCH] elevator: elv_list_lock does not need irq disabling [BLOCK] Don't pin lots of memory in mempools cfq-iosched: speedup cic rb lookup ll_rw_blk: add io_context private pointer cfq-iosched: get rid of cfqq hash cfq-iosched: tighten queue request overlap condition cfq-iosched: improve sync vs async workloads cfq-iosched: never allow an async queue idling cfq-iosched: get rid of ->dispatch_slice cfq-iosched: don't pass unused preemption variable around cfq-iosched: get rid of ->cur_rr and ->cfq_list cfq-iosched: slice offset should take ioprio into account [PATCH] cfq-iosched: style cleanups and comments cfq-iosched: sort IDLE queues into the rbtree cfq-iosched: sort RT queues into the rbtree [PATCH] cfq-iosched: speed up rbtree handling cfq-iosched: rework the whole round-robin list concept cfq-iosched: minor updates cfq-iosched: development update cfq-iosched: improve preemption for cooperating tasks
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc由 Linus Torvalds 提交于
* 'for-2.6.22' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (255 commits) [POWERPC] Remove dev_dbg redefinition in drivers/ps3/vuart.c [POWERPC] remove kernel module option for booke wdt [POWERPC] Avoid putting cpu node twice [POWERPC] Spinlock initializer cleanup [POWERPC] ppc4xx_sgdma needs dma-mapping.h [POWERPC] arch/powerpc/sysdev/timer.c build fix [POWERPC] get_property cleanups [POWERPC] Remove the unused HTDMSOUND driver [POWERPC] cell: cbe_cpufreq cleanup and crash fix [POWERPC] Declare enable_kernel_spe in a header [POWERPC] Add dt_xlate_addr() to bootwrapper [POWERPC] bootwrapper: CONFIG_ -> CONFIG_DEVICE_TREE [POWERPC] Don't define a custom bd_t for Xilixn Virtex based boards. [POWERPC] Add sane defaults for Xilinx EDK generated xparameters files [POWERPC] Add uartlite boot console driver for the zImage wrapper [POWERPC] Stop using ppc_sys for Xilinx Virtex boards [POWERPC] New registration for common Xilinx Virtex ppc405 platform devices [POWERPC] Merge common virtex header files [POWERPC] Rework Kconfig dependancies for Xilinx Virtex ppc405 platform [POWERPC] Clean up cpufreq Kconfig dependencies ...
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由 Mitsuru Chinen 提交于
A transmitted IP multicast datagram should be counted as OutMcastPkts. By the same token, a transmitted IP broadcast datagram should be counted as OutBcastPkts. Signed-off-by: NMitsuru Chinen <mitch@linux.vnet.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Mitsuru Chinen 提交于
A received IP multicast datagram should be counted as InMcastPkts. By the same token, a received IP broadcast datagram should be counted as InBcastPkts. Signed-off-by: NMitsuru Chinen <mitch@linux.vnet.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Mitsuru Chinen 提交于
An IP datagram which is being discarded because the datagram frame didn't carry enough data should be counted as InTruncatedPkts. Signed-off-by: NMitsuru Chinen <mitch@linux.vnet.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Mitsuru Chinen 提交于
An IP datagram which is being discarded because of no routes in the forwarding path should be counted as InNoRoutes. Signed-off-by: NMitsuru Chinen <mitch@linux.vnet.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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