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* xen: Fixed assignment error in if statementLisa Nguyen2013-05-201-1/+2
| | | | | | | Fixed assignment error in if statement in balloon.c Signed-off-by: Lisa Nguyen <lisa@xenapiadmin.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* xen: balloon: allow PVMMU interfaces to be compiled outIan Campbell2012-11-291-1/+4
| | | | | | | | | | | | | The ARM platform has no concept of PVMMU and therefor no HYPERVISOR_update_va_mapping et al. Allow this code to be compiled out when not required. In some similar situations (e.g. P2M) we have defined dummy functions to avoid this, however I think we can/should draw the line at dummying out actual hypercalls. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* xen: balloon: use correct type for frame_listIan Campbell2012-10-191-1/+1
| | | | | | | This is now a xen_pfn_t. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* xen: balloon: don't include e820.hIan Campbell2012-10-191-1/+0
| | | | | | | | This breaks on !X86 and AFAICT is not required on X86 either. Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* xen/balloon: Avoid OOM when requesting highmemDaniel De Graaf2011-11-161-2/+2
| | | | | | | | | | | If highmem pages are requested from the balloon on a system without highmem, the implementation of alloc_xenballooned_pages will allocate all available memory trying to find highmem pages to return. Allow low memory to be returned when highmem pages are requested to avoid this loop. Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* Merge branch 'stable/cleanups-3.2' of ↵Linus Torvalds2011-11-061-7/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/cleanups-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: use static initializers in xen-balloon.c Xen: fix braces and tabs coding style issue in xenbus_probe.c Xen: fix braces coding style issue in xenbus_probe.h Xen: fix whitespaces,tabs coding style issue in drivers/xen/pci.c Xen: fix braces coding style issue in gntdev.c and grant-table.c Xen: fix whitespaces,tabs coding style issue in drivers/xen/events.c Xen: fix whitespaces,tabs coding style issue in drivers/xen/balloon.c Fix up trivial whitespace-conflicts in drivers/xen/{balloon.c,pci.c,xenbus/xenbus_probe.c}
| * Xen: fix whitespaces,tabs coding style issue in drivers/xen/balloon.cRuslan Pisarev2011-07-261-8/+7
| | | | | | | | | | | | | | | | This is a patch to the balloon.c file that fixed up whitespaces, tabs errors found by the checkpatch.pl tools. Signed-off-by: Ruslan Pisarev <ruslan@rpisarev.org.ua> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* | xen: Add module.h to modular drivers/xen users.Paul Gortmaker2011-10-311-0/+1
| | | | | | | | | | | | | | | | Previously these drivers just got module.h implicitly, but we are cleaning that up and it will be no longer. Call out the real users of it. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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*-. \ Merge branches 'stable/bug.fixes-3.2' and 'stable/mmu.fixes' of ↵Linus Torvalds2011-10-251-4/+8
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/bug.fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/p2m/debugfs: Make type_name more obvious. xen/p2m/debugfs: Fix potential pointer exception. xen/enlighten: Fix compile warnings and set cx to known value. xen/xenbus: Remove the unnecessary check. xen/irq: If we fail during msi_capability_init return proper error code. xen/events: Don't check the info for NULL as it is already done. xen/events: BUG() when we can't allocate our event->irq array. * 'stable/mmu.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: Fix selfballooning and ensure it doesn't go too far xen/gntdev: Fix sleep-inside-spinlock xen: modify kernel mappings corresponding to granted pages xen: add an "highmem" parameter to alloc_xenballooned_pages xen/p2m: Use SetPagePrivate and its friends for M2P overrides. xen/p2m: Make debug/xen/mmu/p2m visible again. Revert "xen/debug: WARN_ON when identity PFN has no _PAGE_IOMAP flag set."
| | * | xen: add an "highmem" parameter to alloc_xenballooned_pagesStefano Stabellini2011-09-291-4/+8
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an highmem parameter to alloc_xenballooned_pages, to allow callers to request lowmem or highmem pages. Fix the code style of free_xenballooned_pages' prototype. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* | | xen: allow balloon driver to use more than one memory regionDavid Vrabel2011-09-291-17/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow the xen balloon driver to populate its list of extra pages from more than one region of memory. This will allow platforms to provide (for example) a region of low memory and a region of high memory. The maximum possible number of extra regions is 128 (== E820MAX) which is quite large so xen_extra_mem is placed in __initdata. This is safe as both xen_memory_setup() and balloon_init() are in __init. The balloon regions themselves are not altered (i.e., there is still only the one region). Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* | | xen/balloon: simplify test for the end of usable RAMDavid Vrabel2011-09-291-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | When initializing the balloon only max_pfn needs to be checked (max_pfn will always be <= e820_end_of_ram_pfn()) and improve the confusing comment. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* | | xen/balloon: account for pages released during memory setupDavid Vrabel2011-09-291-1/+3
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In xen_memory_setup() pages that occur in gaps in the memory map are released back to Xen. This reduces the domain's current page count in the hypervisor. The Xen balloon driver does not correctly decrease its initial current_pages count to reflect this. If 'delta' pages are released and the target is adjusted the resulting reservation is always 'delta' less than the requested target. This affects dom0 if the initial allocation of pages overlaps the PCI memory region but won't affect most domU guests that have been setup with pseudo-physical memory maps that don't have gaps. Fix this by accouting for the released pages when starting the balloon driver. If the domain's targets are managed by xapi, the domain may eventually run out of memory and die because xapi currently gets its target calculations wrong and whenever it is restarted it always reduces the target by 'delta'. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* | xen/balloon: memory hotplug support for Xen balloon driverDaniel Kiper2011-07-251-2/+137
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Memory hotplug support for Xen balloon driver. It should be mentioned that hotplugged memory is not onlined automatically. It should be onlined by user through standard sysfs interface. Memory could be hotplugged in following steps: 1) dom0: xl mem-max <domU> <maxmem> where <maxmem> is >= requested memory size, 2) dom0: xl mem-set <domU> <memory> where <memory> is requested memory size; alternatively memory could be added by writing proper value to /sys/devices/system/xen_memory/xen_memory0/target or /sys/devices/system/xen_memory/xen_memory0/target_kb on dumU, 3) domU: for i in /sys/devices/system/memory/memory*/state; do \ [ "`cat "$i"`" = offline ] && echo online > "$i"; done Memory could be onlined automatically on domU by adding following line to udev rules: SUBSYSTEM=="memory", ACTION=="add", RUN+="/bin/sh -c '[ -f /sys$devpath/state ] && echo online > /sys$devpath/state'" In that case step 3 should be omitted. Signed-off-by: Daniel Kiper <dkiper@net-space.pl> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* xen/balloon: Move dec_totalhigh_pages() from __balloon_append() to ↵Daniel Kiper2011-03-301-2/+3
| | | | | | | | | | | | | | | | | | | | balloon_append() git commit 9be4d4575906af9698de660e477f949a076c87e1 (xen: add extra pages to balloon) splited balloon_append() into two functions (balloon_append() and __balloon_append()) and left decrementation of totalram_pages counter in __balloon_append(). In this situation if __balloon_append() is called on i386 with highmem page referenced then totalhigh_pages is decremented, however, it should not. This patch corrects that issue and moves dec_totalhigh_pages() from __balloon_append() to balloon_append(). Now totalram_pages and totalhigh_pages are decremented simultaneously only when balloon_append() is called. Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> Signed-off-by: Daniel Kiper <dkiper@net-space.pl> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* xen/balloon: Clarify credit calculationDaniel Kiper2011-03-301-4/+4
| | | | | | | | | | Move credit calculation to current_target() and rename it to current_credit(). Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> Signed-off-by: Daniel Kiper <dkiper@net-space.pl> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* xen/balloon: Simplify HVM integrationDaniel Kiper2011-03-301-8/+4
| | | | | | | | | | Simplify HVM integration proposed by Stefano Stabellini in 53d5522cad291a0e93a385e0594b6aea6b54a071. Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> Signed-off-by: Daniel Kiper <dkiper@net-space.pl> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* xen/balloon: Use PageHighMem() for high memory page detectionDaniel Kiper2011-03-301-1/+1
| | | | | | | | | | Replace pfn < max_low_pfn by !PageHighMem() in increase_reservation(). It makes more clearer what is going on. Acked-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> Signed-off-by: Daniel Kiper <dkiper@net-space.pl> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
*-. Merge branches 'stable/hvc-console', 'stable/gntalloc.v6' and ↵Linus Torvalds2011-03-171-234/+125
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'stable/balloon' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/hvc-console' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/hvc: Disable probe_irq_on/off from poking the hvc-console IRQ line. * 'stable/gntalloc.v6' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen: gntdev: fix build warning xen/p2m/m2p/gnttab: do not add failed grant maps to m2p override xen-gntdev: Add cast to pointer xen-gntdev: Fix incorrect use of zero handle xen: change xen/[gntdev/gntalloc] to default m xen-gntdev: prevent using UNMAP_NOTIFY_CLEAR_BYTE on read-only mappings xen-gntdev: Avoid double-mapping memory xen-gntdev: Avoid unmapping ranges twice xen-gntdev: Use map->vma for checking map validity xen-gntdev: Fix unmap notify on PV domains xen-gntdev: Fix memory leak when mmap fails xen/gntalloc,gntdev: Add unmap notify ioctl xen-gntalloc: Userspace grant allocation driver xen-gntdev: Support mapping in HVM domains xen-gntdev: Add reference counting to maps xen-gntdev: Use find_vma rather than iterating our vma list manually xen-gntdev: Change page limit to be global instead of per-open * 'stable/balloon' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: (24 commits) xen-gntdev: Use ballooned pages for grant mappings xen-balloon: Add interface to retrieve ballooned pages xen-balloon: Move core balloon functionality out of module xen/balloon: Remove pr_info's and don't alter retry_count xen/balloon: Protect against CPU exhaust by event/x process xen/balloon: Migration from mod_timer() to schedule_delayed_work() xen/balloon: Removal of driver_pages
| | * xen-balloon: Add interface to retrieve ballooned pagesKonrad Rzeszutek Wilk2011-03-161-6/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pages that have been ballooned are useful for other Xen drivers doing grant table actions, because these pages have valid struct page/PFNs but have no valid MFN so are available for remapping. Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> [v2: Deal with rebasing on top of modified balloon code] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| | * xen-balloon: Move core balloon functionality out of moduleDaniel De Graaf2011-03-161-223/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The basic functionality of ballooning pages is useful for Xen drivers in general. Rather than require a dependency on the balloon module, split the functionality that is reused into the core. The balloon module is still required to follow ballooning requests from xenstore or to view balloon statistics in sysfs. Acked-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| | * xen/balloon: Remove pr_info's and don't alter retry_countKonrad Rzeszutek Wilk2011-03-161-10/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the past the retry_count (in other form of this code) was zero. Meaning retry forever. Do the same thing here without changing it to the value 16. Also remove some of the pr_info as there is no need to spam the user. Acked-by: Ian Campbell <Ian.Campbell@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| | * xen/balloon: Protect against CPU exhaust by event/x processDaniel Kiper2011-03-141-17/+90
| | | | | | | | | | | | | | | | | | | | | | | | | | | Protect against CPU exhaust by event/x process during errors by adding some delays in scheduling next event and retry count limit. Signed-off-by: Daniel Kiper <dkiper@net-space.pl> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| | * xen/balloon: Migration from mod_timer() to schedule_delayed_work()Daniel Kiper2011-03-141-13/+3
| | | | | | | | | | | | | | | | | | | | | Migration from mod_timer() to schedule_delayed_work(). Signed-off-by: Daniel Kiper <dkiper@net-space.pl> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| | * xen/balloon: Removal of driver_pagesDaniel Kiper2011-03-141-8/+0
| |/ | | | | | | | | | | | | Removal of driver_pages (I do not have seen any references to it). Signed-off-by: Daniel Kiper <dkiper@net-space.pl> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* | Merge branch 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvmLinus Torvalds2011-03-151-5/+9
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm: xen: suspend: remove xen_hvm_suspend xen: suspend: pull pre/post suspend hooks out into suspend_info xen: suspend: move arch specific pre/post suspend hooks into generic hooks xen: suspend: refactor non-arch specific pre/post suspend hooks xen: suspend: add "arch" to pre/post suspend hooks xen: suspend: pass extra hypercall argument via suspend_info struct xen: suspend: refactor cancellation flag into a structure xen: suspend: use HYPERVISOR_suspend for PVHVM case instead of open coding xen: switch to new schedop hypercall by default. xen: use new schedop interface for suspend xen: do not respond to unknown xenstore control requests xen: fix compile issue if XEN is enabled but XEN_PVHVM is disabled xen: PV on HVM: support PV spinlocks and IPIs xen: make the ballon driver work for hvm domains xen-blkfront: handle Xen major numbers other than XENVBD xen: do not use xen_info on HVM, set pv_info name to "Xen HVM" xen: no need to delay xen_setup_shutdown_event for hvm guests anymore
| * | xen: make the ballon driver work for hvm domainsStefano Stabellini2011-02-251-5/+9
| |/ | | | | | | Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
* | xen: Mark all initial reserved pages for the balloon as INVALID_P2M_ENTRY.Konrad Rzeszutek Wilk2011-03-031-1/+1
|/ | | | | | | | | | | | | | | | | | | With this patch, we diligently set regions that will be used by the balloon driver to be INVALID_P2M_ENTRY and under the ownership of the balloon driver. We are OK using the __set_phys_to_machine as we do not expect to be allocating any P2M middle or entries pages. The set_phys_to_machine has the side-effect of potentially allocating new pages and we do not want that at this stage. We can do this because xen_build_mfn_list_list will have already allocated all such pages up to xen_max_p2m_pfn. We also move the check for auto translated physmap down the stack so it is present in __set_phys_to_machine. [v2: Rebased with mmu->p2m code split] Reviewed-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* xen: prevent crashes with non-HIGHMEM 32-bit kernels with largeish memoryJeremy Fitzhardinge2010-12-021-2/+10
| | | | | | | | If this is a non-HIGHMEM 32-bit kernel, then the page structures only go up to the limit of addressable memory, even if more memory is physically present. Don't try to add that extra memory to the balloon. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
* xen/balloon: make sure we only include remaining extra ramJeremy Fitzhardinge2010-11-191-2/+5
| | | | | | | | If the user specifies mem= on the kernel command line, some or all of the extra memory E820 region may be clipped away, so make sure we don't try to add more extra memory than exists in E820. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
* xen/balloon: the balloon_lock is uselessJeremy Fitzhardinge2010-11-191-10/+2
| | | | | | The balloon_lock is useless, since it protects nothing against nothing. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
* xen: add extra pages to balloonJeremy Fitzhardinge2010-11-191-4/+11
| | | | | | | Add extra pages in the pseudo-physical address space to the balloon so we can extend into them later. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
* xen: Rename the balloon lockAlex Nixon2010-06-071-11/+4
| | | | | | | | | | | | | | * xen_create_contiguous_region needs access to the balloon lock to ensure memory doesn't change under its feet, so expose the balloon lock * Change the name of the lock to xen_reservation_lock, to imply it's now less-specific usage. [ Impact: cleanup ] Signed-off-by: Alex Nixon <alex.nixon@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* Merge branch 'linux-next' of ↵Linus Torvalds2009-12-111-0/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (109 commits) PCI: fix coding style issue in pci_save_state() PCI: add pci_request_acs PCI: fix BUG_ON triggered by logical PCIe root port removal PCI: remove ifdefed pci_cleanup_aer_correct_error_status PCI: unconditionally clear AER uncorr status register during cleanup x86/PCI: claim SR-IOV BARs in pcibios_allocate_resource PCI: portdrv: remove redundant definitions PCI: portdrv: remove unnecessary struct pcie_port_data PCI: portdrv: minor cleanup for pcie_port_device_register PCI: portdrv: add missing irq cleanup PCI: portdrv: enable device before irq initialization PCI: portdrv: cleanup service irqs initialization PCI: portdrv: check capabilities first PCI: portdrv: move PME capability check PCI: portdrv: remove redundant pcie type calculation PCI: portdrv: cleanup pcie_device registration PCI: portdrv: remove redundant pcie_port_device_probe PCI: Always set prefetchable base/limit upper32 registers PCI: read-modify-write the pcie device control register when initiating pcie flr PCI: show dma_mask bits in /sys ... Fixed up conflicts in: arch/x86/kernel/amd_iommu_init.c drivers/pci/dmar.c drivers/pci/hotplug/acpiphp_glue.c
| * xen: move Xen-testing predicates to common headerJeremy Fitzhardinge2009-11-041-0/+2
| | | | | | | | | | | | | | | | Move xen_domain and related tests out of asm-x86 to xen/xen.h so they can be included whenever they are necessary. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | xen: try harder to balloon up under memory pressure.Ian Campbell2009-12-041-26/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently if the balloon driver is unable to increase the guest's reservation it assumes the failure was due to reaching its full allocation, gives up on the ballooning operation and records the limit it reached as the "hard limit". The driver will not try again until the target is set again (even to the same value). However it is possible that ballooning has in fact failed due to memory pressure in the host and therefore it is desirable to keep attempting to reach the target in case memory becomes available. The most likely scenario is that some guests are ballooning down while others are ballooning up and therefore there is temporary memory pressure while things stabilise. You would not expect a well behaved toolstack to ask a domain to balloon to more than its allocation nor would you expect it to deliberately over-commit memory by setting balloon targets which exceed the total host memory. This patch drops the concept of a hard limit and causes the balloon driver to retry increasing the reservation on a timer in the same manner as when decreasing the reservation. Also if we partially succeed in increasing the reservation (i.e. receive less pages than we asked for) then we may as well keep those pages rather than returning them to Xen. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Cc: Stable Kernel <stable@kernel.org>
* | Xen balloon: fix totalram_pages counting.Gianluca Guida2009-12-041-3/+4
|/ | | | | | | | | | Change totalram_pages when a single page is added/removed to the ballooned list. This avoid totalram_pages to be set erroneously to max_pfn at boot. Signed-off-by: Gianluca Guida <gianluca.guida@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2009-09-221-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits) trivial: fix typo in aic7xxx comment trivial: fix comment typo in drivers/ata/pata_hpt37x.c trivial: typo in kernel-parameters.txt trivial: fix typo in tracing documentation trivial: add __init/__exit macros in drivers/gpio/bt8xxgpio.c trivial: add __init macro/ fix of __exit macro location in ipmi_poweroff.c trivial: remove unnecessary semicolons trivial: Fix duplicated word "options" in comment trivial: kbuild: remove extraneous blank line after declaration of usage() trivial: improve help text for mm debug config options trivial: doc: hpfall: accept disk device to unload as argument trivial: doc: hpfall: reduce risk that hpfall can do harm trivial: SubmittingPatches: Fix reference to renumbered step trivial: fix typos "man[ae]g?ment" -> "management" trivial: media/video/cx88: add __init/__exit macros to cx88 drivers trivial: fix typo in CONFIG_DEBUG_FS in gcov doc trivial: fix missing printk space in amd_k7_smp_check trivial: fix typo s/ketymap/keymap/ in comment trivial: fix typo "to to" in multiple files trivial: fix typos in comments s/DGBU/DBGU/ ...
| * trivial: remove unnecessary semicolonsJoe Perches2009-09-211-1/+1
| | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | mm: replace various uses of num_physpages by totalram_pagesJan Beulich2009-09-221-4/+0
|/ | | | | | | | | | | | | | | | | | | | | | | Sizing of memory allocations shouldn't depend on the number of physical pages found in a system, as that generally includes (perhaps a huge amount of) non-RAM pages. The amount of what actually is usable as storage should instead be used as a basis here. Some of the calculations (i.e. those not intending to use high memory) should likely even use (totalram_pages - totalhigh_pages). Signed-off-by: Jan Beulich <jbeulich@novell.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Dave Airlie <airlied@linux.ie> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [IA64] xen_domu_defconfig: fix build issues/warningsJan Beulich2009-05-051-1/+2
| | | | | | | | | | - drivers/xen/events.c did not compile - xen_setup_hook caused a modpost section warning - the use of u64 (instead of unsigned long long) together with a %llu in drivers/xen/balloon.c caused a compiler warning Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* xen: make sysfs files behave as their names suggestJeremy Fitzhardinge2009-01-291-1/+32
| | | | | | | | | | | | | | | 1: make "target_kb" only accept and produce a memory size in kilobytes. 2: add a second "target" file which produces output in bytes, and will accept memparse input (scaled bytes) This fixes the rather irritating problem that writing the same value read back into target_kb would end up shrinking the domain by a factor of 1024, with generally bad results. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Stable Kernel <stable@kernel.org> Cc: "dan.magenheimer@oracle.com" <dan.magenheimer@oracle.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* xen: handle highmem pages correctly when shrinking a domainIan Campbell2009-01-231-4/+7
| | | | | | | | | | | | Commit 1058a75f07b9bb8323fb5197be5526220f8b75cf ("xen: actually release memory when shrinking domain") causes a crash if the page being released is a highmem page. If a page is highmem then there is no need to unmap it. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* xen: actually release memory when shrinking domainDan Magenheimer2009-01-221-0/+5
| | | | | | | | | | | | | | | Fix this: > It appears that in the upstream balloon driver, > the call to HYPERVISOR_update_va_mapping is missing > from decrease_reservation. I think as a result, > the balloon driver is eating memory but not > releasing it to Xen, thus rendering the balloon > driver essentially useless. (Can be observed via xentop.) Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* xen: clean up asm/xen/hypervisor.hJeremy Fitzhardinge2008-12-161-1/+3
| | | | | | | | | | | Impact: cleanup hypervisor.h had accumulated a lot of crud, including lots of spurious #includes. Clean it all up, and go around fixing up everything else accordingly. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* xen: fix scrub_page()Jeremy Fitzhardinge2008-11-171-8/+1
| | | | | | | | | | | | | | | | Impact: fix guest kernel crash with CONFIG_XEN_SCRUB_PAGES=y Jens noticed that scrub_page() has a buggy unmap of the wrong thing. (virtual address instead of page) Linus pointed out that the whole scrub_page() code is an unnecessary reimplementation of clear_highpage() to begin with. Just use clear_highpage() rather than reimplementing it poorly. Reported-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* drivers: remove duplicated #includeJianjun Kong2008-11-041-1/+0
| | | | | Signed-off-by: Jianjun Kong <jianjun@zeuux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* xen: remove unused balloon.hJeremy Fitzhardinge2008-10-031-1/+0
| | | | | | | | | The balloon driver doesn't have any externally callable functions at the moment, so remove the (effectively empty) header. We can add it back if we need to. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* xen: clean up domain mode predicatesJeremy Fitzhardinge2008-08-201-1/+1
| | | | | | | | | | | | | | There are four operating modes Xen code may find itself running in: - native - hvm domain - pv dom0 - pv domU Clean up predicates for testing for these states to make them more consistent. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Xen-devel <xen-devel@lists.xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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