summaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2008-05-27xen: maintain clock offset over save/restoreJeremy Fitzhardinge3-14/+12
Hook into the device model to make sure that timekeeping's resume handler is called. This deals with our clocksource's non-monotonicity over the save/restore. Explicitly call clock_has_changed() to make sure that all the timers get retriggered properly. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen: implement save/restoreJeremy Fitzhardinge14-21/+318
This patch implements Xen save/restore and migration. Saving is triggered via xenbus, which is polled in drivers/xen/manage.c. When a suspend request comes in, the kernel prepares itself for saving by: 1 - Freeze all processes. This is primarily to prevent any partially-completed pagetable updates from confusing the suspend process. If CONFIG_PREEMPT isn't defined, then this isn't necessary. 2 - Suspend xenbus and other devices 3 - Stop_machine, to make sure all the other vcpus are quiescent. The Xen tools require the domain to run its save off vcpu0. 4 - Within the stop_machine state, it pins any unpinned pgds (under construction or destruction), performs canonicalizes various other pieces of state (mostly converting mfns to pfns), and finally 5 - Suspend the domain Restore reverses the steps used to save the domain, ending when all the frozen processes are thawed. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xenbus: rebind irq on restoreJeremy Fitzhardinge1-11/+12
When restoring, rebind the existing xenbus irq to the new xenbus event channel. (It turns out in practice that this is always the same, and is never updated on restore. That's a bug, but Xeno-linux has been like this for a long time, so it can't really be fixed.) Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-05-27xen-console: add save/restoreJeremy Fitzhardinge2-4/+23
Add code to: 1. Deal with the console page being canonicalized. During save, the console's mfn in the start_info structure is canonicalized to a pfn. In order to deal with that, we always use a copy of the pfn and indirect off that all the time. However, we fall back to using the mfn if the pfn hasn't been initialized yet. 2. Restore the console event channel, and rebind it to the existing irq. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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 ↵Isaku Yamahata1-4/+8
ia64/xen needs 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>
2008-05-22HTC_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>
2008-05-22provide 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>
2008-05-22caiaq endianness fixAl Viro1-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-22MODULE_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>
2008-05-22msnd_* 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>
2008-05-22missing 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>
2008-05-22ocfs2 endianness fixesAl Viro1-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-22irda-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>
2008-05-22sbus 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>
2008-05-22ecryptfs 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>
2008-05-22misc 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>
2008-05-22thanks 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>
2008-05-22missing 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>
2008-05-22uml: 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>
2008-05-22fix 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>
2008-05-22fix 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>
2008-05-22missed 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>
2008-05-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds22-545/+612
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: (21 commits) [CIFS] Remove debug statement Fix possible access to undefined memory region. [CIFS] Enable DFS support for Windows query path info [CIFS] Enable DFS support for Unix query path info [CIFS] add missing seq_printf to cifs_show_options for hard mount option [CIFS] add more complete mount options to cifs_show_options [CIFS] Add missing defines for DFS CIFSGetDFSRefer cleanup + dfs_referral_level_3 fixed to conform REFERRAL_V3 the MS-DFSC spec. Fixed DFS code to work with new 'build_path_from_dentry', that returns full path if share in the dfs, now. [CIFS] enable parsing for transport encryption mount parm [CIFS] Finishup DFS code [CIFS] BKL-removal: convert CIFS over to unlocked_ioctl [CIFS] suppress duplicate warning [CIFS] Fix paths when share is in DFS to include proper prefix add function to convert access flags to legacy open mode clarify return value of cifs_convert_flags() [CIFS] don't explicitly do a FindClose on rewind when directory search has ended [CIFS] cleanup old checkpatch warnings [CIFS] CIFSSMBPosixLock should return -EINVAL on error fix memory leak in CIFSFindNext ...
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>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-27 22:22:13 +0300