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2008-05-27xen: fix unbind_from_irq()Jeremy Fitzhardinge1-2/+2
Rearrange the tests in unbind_from_irq() so that we can still unbind an irq even if the underlying event channel is bad. This allows a device driver to shuffle its irqs on save/restore before the underlying event channels have been fixed up. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: add rebind_evtchn_irqJeremy Fitzhardinge2-0/+28
Add rebind_evtchn_irq(), which will rebind an device driver's existing irq to a new event channel on restore. Since the new event channel will be masked and bound to vcpu0, we update the state accordingly and unmask the irq once everything is set up. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: add p2m mfn_list_listJeremy Fitzhardinge3-3/+40
When saving a domain, the Xen tools need to remap all our mfns to portable pfns. In order to remap our p2m table, it needs to know where all its pages are, so maintain the references to the p2m table for it to use. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: make dummy_shared_info non-staticJeremy Fitzhardinge2-3/+4
Rename dummy_shared_info to xen_dummy_shared_info and make it non-static, in anticipation of users outside of enlighten.c Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: efficiently support a holey p2m tableJeremy Fitzhardinge1-6/+12
When using sparsemem and memory hotplug, the kernel's pseudo-physical address space can be discontigious. Previously this was dealt with by having the upper parts of the radix tree stubbed off. Unfortunately, this is incompatible with save/restore, which requires a complete p2m table. The solution is to have a special distinguished all-invalid p2m leaf page, which we can point all the hole areas at. This allows the tools to see a complete p2m table, but it only costs a page for all memory holes. It also simplifies the code since it removes a few special cases. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: add configurable max domain sizeJeremy Fitzhardinge4-13/+30
Add a config option to set the max size of a Xen domain. This is used to scale the size of the physical-to-machine array; it ends up using around 1 page/GByte, so there's no reason to be very restrictive. For a 32-bit guest, the default value of 8GB is probably sufficient; there's not much point in giving a 32-bit machine much more memory than that. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: make phys_to_machine structure dynamicJeremy Fitzhardinge5-17/+94
We now support the use of memory hotplug, so the physical to machine page mapping structure must be dynamic. This is implemented as a two-level radix tree structure, which allows us to efficiently incrementally allocate memory for the p2m table as new pages are added. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: drivers/xen/balloon.c: make a function staticAdrian Bunk1-1/+1
Make the needlessly global balloon_set_new_target() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: count resched interrupts properlyJeremy Fitzhardinge1-0/+6
Make sure resched interrupts appear in /proc/interrupts in the proper place. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: add missing definitions in include/xen/interface/memory.h which ia64/xen needsIsaku Yamahata1-4/+8
Add xen handles realted definitions for xen memory which ia64/xen needs. Pointer argumsnts for ia64/xen hypercall are passed in pseudo physical address (guest physical address) so that it is required to convert guest kernel virtual address into pseudo physical address. The xen guest handle represents such arguments. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: compilation fix to balloon driver for ia64 supportIsaku Yamahata1-4/+4
fix compilation error of ballon driver on ia64. extent_start member is pointer argument. On x86 pointer argument for xen hypercall is passed as virtual address. On the other hand, ia64 and ppc, pointer argument is passed in pseudo physical address. (guest physicall address.) So they must be passed as handle and convert right before issuing hypercall. CC drivers/xen/balloon.o linux-2.6-x86/drivers/xen/balloon.c: In function 'increase_reservation': linux-2.6-x86/drivers/xen/balloon.c:228: error: incompatible types in assignment linux-2.6-x86/drivers/xen/balloon.c: In function 'decrease_reservation': linux-2.6-x86/drivers/xen/balloon.c:324: error: incompatible types in assignment linux-2.6-x86/drivers/xen/balloon.c: In function 'dealloc_pte_fn': linux-2.6-x86/drivers/xen/balloon.c:486: error: incompatible types in assignment linux-2.6-x86/drivers/xen/balloon.c: In function 'alloc_empty_pages_and_pagevec': linux-2.6-x86/drivers/xen/balloon.c:522: error: incompatible types in assignment make[2]: *** [drivers/xen/balloon.o] Error 1 Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: Move manage.c to drivers/xen for ia64/xen supportIsaku Yamahata3-2/+2
move arch/x86/xen/manage.c under drivers/xen/to share codes with x86 and ia64. ia64/xen also uses manage.c Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: make earlyprintk=xen work againJeremy Fitzhardinge2-0/+2
For some perverse reason, if you call add_preferred_console() it prevents setup_early_printk() from successfully enabling the boot console - unless you make it a preferred console too... Also, make xenboot console output distinct from normal console output, since it gets repeated when the console handover happens, and the duplicated output is confusing without disambiguation. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Markus Armbruster <armbru@redhat.com> Cc: Gerd Hoffmann <kraxel@redhat.com>
2008-05-27xen pvfb: Dynamic mode support (screen resizing)Markus Armbruster3-34/+188
The pvfb backend indicates dynamic mode support by creating node feature_resize with a non-zero value in its xenstore directory. xen-fbfront sends a resize notification event on mode change. Fully backwards compatible both ways. Framebuffer size and initial resolution can be controlled through kernel parameter xen_fbfront.video. The backend enforces a separate size limit, which it advertises in node videoram in its xenstore directory. xen-kbdfront gets the maximum screen resolution from nodes width and height in the backend's xenstore directory instead of hardcoding it. Additional goodie: support for larger framebuffers (512M on a 64-bit system with 4K pages). Changing the number of bits per pixels dynamically is not supported, yet. Ported from http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/92f7b3144f41 http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/bfc040135633 Signed-off-by: Pat Campbell <plc@novell.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen pvfb: Zero unused bytes in events sent to backendMarkus Armbruster1-0/+1
This isn't a security flaw (the backend can see all our memory anyway). But it's the right thing to do all the same. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen pvfb: Module aliases to support module autoloadingMarkus Armbruster2-0/+4
These are mostly for completeness and consistency with the other frontends, as PVFB is typically compiled in rather than a module. Derived from http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/5e294e29a43e While there, add module descriptions. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen pvfb: Pointer z-axis (mouse wheel) supportMarkus Armbruster2-1/+9
Add z-axis motion to pointer events. Backward compatible, because there's space for the z-axis in union xenkbd_in_event, and old backends zero it. Derived from http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/57dfe0098000 http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/1edfea26a2a9 http://xenbits.xensource.com/linux-2.6.18-xen.hg?rev/c3ff0b26f664 Signed-off-by: Pat Campbell <plc@novell.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: Enable console tty by default in domU if it's not a dummyMarkus Armbruster4-1/+33
Without console= arguments on the kernel command line, the first console to register becomes enabled and the preferred console (the one behind /dev/console). This is normally tty (assuming CONFIG_VT_CONSOLE is enabled, which it commonly is). This is okay as long tty is a useful console. But unless we have the PV framebuffer, and it is enabled for this domain, tty0 in domU is merely a dummy. In that case, we want the preferred console to be the Xen console hvc0, and we want it without having to fiddle with the kernel command line. Commit b8c2d3dfbc117dff26058fbac316b8acfc2cb5f7 did that for us. Since we now have the PV framebuffer, we want to enable and prefer tty again, but only when PVFB is enabled. But even then we still want to enable the Xen console as well. Problem: when tty registers, we can't yet know whether the PVFB is enabled. By the time we can know (xenstore is up), the console setup game is over. Solution: enable console tty by default, but keep hvc as the preferred console. Change the preferred console to tty when PVFB probes successfully, unless we've been given console kernel parameters. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27x86/paravirt: add pte_flags to just get pte flagsJeremy Fitzhardinge6-9/+26
Add pte_flags() to extract the flags from a pte. This is a special case of pte_val() which is only guaranteed to return the pte's flags correctly; the page number may be corrupted or missing. The intent is to allow paravirt implementations to return pte flags without having to do any translation of the page number (most notably, Xen). Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: don't worry about preempt during xen_irq_enable()Jeremy Fitzhardinge1-5/+5
When enabling interrupts, we don't need to worry about preemption, because we either enter with interrupts disabled - so no preemption - or the caller is confused and is re-enabling interrupts on some indeterminate processor. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: allow some cr4 updatesJeremy Fitzhardinge1-2/+4
The guest can legitimately change things like cr4.OSFXSR and OSXMMEXCPT, so let it. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: use new sched_opJeremy Fitzhardinge2-4/+6
Use the new sched_op hypercall, mainly because xenner doesn't support the old one. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: use hypercall rather than cltsJeremy Fitzhardinge2-2/+33
Xen will trap and emulate clts, but its better to use a hypercall. Also, xenner doesn't handle clts. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: make early console also write to debug consoleJeremy Fitzhardinge1-11/+18
When using "earlyprintk=xen", also write the console output to the raw debug console. This will appear on dom0's console if the hypervisor has been compiled to allow it. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: add raw console write functions for debugJeremy Fitzhardinge2-0/+29
Add a couple of functions which can write directly to the Xen console for debugging. This output ends up on the host's dom0 console (assuming it allows the domain to write there). Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-22xen: remove support for non-PAE 32-bitJeremy Fitzhardinge6-77/+27
Non-PAE operation has been deprecated in Xen for a while, and is rarely tested or used. xen-unstable has now officially dropped non-PAE support. Since Xen/pvops' non-PAE support has also been broken for a while, we may as well completely drop it altogether. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-21HTC_EGPIO is ARM-onlyAl Viro1-1/+1
driver uses symbols defined only on ARM Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21provide out-of-line strcat() for m68kAl Viro1-0/+6
Whether we sidestep it in init/main.c or not, such situations will arise again; compiler does generate calls of strcat() on optimizations, so we really ought to have an out-of-line version... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21caiaq endianness fixAl Viro1-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21MODULE_LICENSE expects "GPL v2", not "GPLv2"Al Viro8-8/+8
... and we have few enough places using the latter to make it simpler to do search and replace... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21msnd_* is ISA-onlyAl Viro1-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21missing dependencies on HAS_DMAAl Viro5-5/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21ocfs2 endianness fixesAl Viro1-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21irda-usb endianness annotations and fixesAl Viro2-3/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21sbus bpp: instances missed in s/dev_name/bpp_dev_name/Al Viro1-3/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21ecryptfs fixesAl Viro1-14/+12
memcpy() from userland pointer is a Bad Thing(tm) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21misc drivers/net endianness noiseAl Viro6-14/+16
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21thanks to net/mac80211 we need to pull drivers/leds/Kconfig on umlAl Viro1-0/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21missing export of csum_partial() on uml/amd64Al Viro1-2/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21uml: add missing exports for UML_RANDOM=mAl Viro1-0/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21fix hppfs Makefile breakageAl Viro1-4/+1
Fallout from commit 46d7b522ebf486edbd096965d534cc6465e9e309 ("uml: move hppfs_kern.c to hppfs.c") Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21fix include order in sys-i386/registers.cAl Viro1-0/+1
We want sys/ptrace.h before any includes of linux/ptrace.h and asm/user.h pulls the latter. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21missed kmalloc() in pcap_user.cAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-21[CIFS] Remove debug statementSteve French1-1/+1
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-05-21Fix possible access to undefined memory region.Igor Mammedov1-4/+5
Signed-off-by: Igor Mammedov <niallain@gmail.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-05-20pktgen: make sure that pktgen_thread_worker has been executedDenis V. Lunev1-0/+4
The following courruption can happen during pktgen stop: list_del corruption. prev->next should be ffff81007e8a5e70, but was 6b6b6b6b6b6b6b6b kernel BUG at lib/list_debug.c:67! :pktgen:pktgen_thread_worker+0x374/0x10b0 ? autoremove_wake_function+0x0/0x40 ? _spin_unlock_irqrestore+0x42/0x80 ? :pktgen:pktgen_thread_worker+0x0/0x10b0 kthread+0x4d/0x80 child_rip+0xa/0x12 ? restore_args+0x0/0x30 ? kthread+0x0/0x80 ? child_rip+0x0/0x12 RIP list_del+0x48/0x70 The problem is that pktgen_thread_worker can not be executed if kthread_stop has been called too early. Insert a completion on the normal initialization path to make sure that pktgen_thread_worker will gain the control for sure. Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Alexey Dobriyan <adobriyan@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-20[VLAN]: Propagate selected feature bits to VLAN devicesPatrick McHardy4-2/+41
Propagate feature bits from the NETDEV_FEAT_CHANGE notifier. For now only TSO is propagated for devices that announce their ability to support TSO in combination with VLAN accel by setting the NETIF_F_VLAN_TSO flag. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-20[CIFS] Enable DFS support for Windows query path infoSteve French1-146/+178
Final piece for handling DFS in query_path_info, constructing a fake inode for the junction directory which the submount will cover. This handles the non-Unix (Windows etc.) code path. Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-05-20drivers/atm/: remove CVS keywordsAdrian Bunk6-17/+1
This patch removes CVS keywords that weren't updated for a long time. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-20vlan: Correctly handle device notifications for layered VLAN devicesPatrick McHardy1-3/+1
Commit 30688a9 ([VLAN]: Handle vlan devices net namespace changing) changed the device notifier to special-case notifications for VLAN devices, effectively disabling state propagation to underlying VLAN devices. This is needed for layered VLANs though, so restore the original behaviour. Signed-off-by: Patrick McHardy <kaber@trash.net> Acked-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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