- 04 8月, 2011 4 次提交
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由 Konrad Rzeszutek Wilk 提交于
Without enabling CONFIG_XEN_TMEM we get this: drivers/xen/xen-selfballoon.c:461: undefined reference to `tmem_enabled' Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
With a specific enough .config file compile errors show for missing workqueue declarations. Reported-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
drivers/xen/grant-table.c:85: warning: ‘rc’ may be used uninitialized in this function Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Huang Weiyi 提交于
Remove duplicated #include('s) in drivers/xen/xen-pciback/xenbus.c Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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- 27 7月, 2011 3 次提交
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由 Konrad Rzeszutek Wilk 提交于
With a specific enough .config file compile errors show for missing workqueue declarations. Reported-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
drivers/xen/grant-table.c:85: warning: ‘rc’ may be used uninitialized in this function Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Huang Weiyi 提交于
Remove duplicated #include('s) in drivers/xen/xen-pciback/xenbus.c Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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- 26 7月, 2011 1 次提交
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由 Daniel Kiper 提交于
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: NDaniel Kiper <dkiper@net-space.pl> Acked-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 20 7月, 2011 13 次提交
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由 Konrad Rzeszutek Wilk 提交于
xen/pciback: Have 'passthrough' option instead of XEN_PCIDEV_BACKEND_PASS and XEN_PCIDEV_BACKEND_VPCI .. compile options. This way the user can decide during runtime whether they want the default 'vpci' (virtual pci passthrough) or where the PCI devices are passed in without any BDF renumbering. The option 'passthrough' allows the user to toggle the it from 0 (vpci) to 1 (passthrough). Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
The latter is easily fixed - by the developer compiling the module with -DDEBUG. And during runtime - the loglvl provides quite a lot of useful data. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
- Remove the slot and controller controller backend as they are not used. - Document the find pciback_[read|write]_config_[byte|word|dword] to make it easier to find. - Collapse the code from conf_space_capability_msi into pciback_ops.c - Collapse conf_space_capability_[pm|vpd].c in conf_space_capability.c [and remove the conf_space_capability.h file] - Rename all visible functions from pciback to xen_pcibk. - Rename all the printk/pr_info, etc that use the "pciback" to say "xen-pciback". - Convert functions that are not referenced outside the code to be static to save on name space. - Do the same thing for structures that are internal to the driver. - Run checkpatch.pl after the renames and fixup its warnings and fix any compile errors caused by the variable rename - Cleanup any structs that checkpath.pl commented about or just look odd. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
If the verbose_request is set (and loglevel high enough), print out the MSI/MSI-X values that are sent to the guest. This should aid in debugging issues. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
If we try to setup an fake IRQ handler for legacy interrupts for devices that only have MSI-X (most if not all SR-IOV cards), we will fail with this: pciback[0000:01:10.0]: failed to install fake IRQ handler for IRQ 0! (rc:-38) Since those cards don't have anything in dev->irq. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Ian Campbell 提交于
pciback is rather generic for a modular distro style kernel. Signed-off-by: NIan Campbell <ian.campbell@citrix.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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由 Konrad Rzeszutek Wilk 提交于
We were using coarse spinlocks that could end up with a deadlock. This patch fixes that and makes the spinlocks much more fine-grained. We also drop be->watchding state spinlocks as they are already guarded by the xenwatch_thread against multiple customers. Without that we would trigger the BUG: scheduling while atomic. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
If the device that is to be shared with a guest is a level device and the IRQ is shared with the initial domain we need to take actions. Mainly we install a dummy IRQ handler that will ACK on the interrupt line so as to not have the initial domain disable the interrupt line. This dummy IRQ handler is not enabled when the device MSI/MSI-X lines are set, nor for edge interrupts. And also not for level interrupts that are not shared amongst devices. Lastly, if the user passes to the guest all of the PCI devices on the shared line the we won't install the dummy handler either. There is also SysFS instrumentation to check its state and turn IRQ ACKing on/off if necessary. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
In cases where the guest is abruptly killed and has not disabled MSI/MSI-X interrupts we want to do it for it. Otherwise when the guest is started up and enables MSI, we would get a WARN() that the device already had been enabled. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Zhao, Yu 提交于
These changes are for PV guest to use Virtual Function. Because the VF's vendor, device registers in cfg space are 0xffff, which are invalid and ignored by PCI device scan. Values in 'struct pci_dev' are fixed up by SR-IOV code, and using these values will present correct VID and DID to PV guest kernel. And command registers in the cfg space are read only 0, which means we have to emulate MMIO enable bit (VF only uses MMIO resource) so PV kernel can work properly. Acked-by: NJan Beulich <jbeulich@novell.com> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
When the front-end and back-end start negotiating we register the domain that will use the PCI device. Furthermore during shutdown of guest or unbinding of the PCI device (and unloading of module) from pciback we unregister the domain owner. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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由 Konrad Rzeszutek Wilk 提交于
Checkpatch found some extra warnings and errors. This mega patch fixes them all in one big swoop. We also spruce up the pcistub_ids to use DEFINE_PCI_DEVICE_TABLE macro (suggested by Jan Beulich). Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
This is the host side counterpart to the frontend driver in drivers/pci/xen-pcifront.c. The PV protocol is also implemented by frontend drivers in other OSes too, such as the BSDs. The PV protocol is rather simple. There is page shared with the guest, which has the 'struct xen_pci_sharedinfo' embossed in it. The backend has a thread that is kicked every-time the structure is changed and based on the operation field it performs specific tasks: XEN_PCI_OP_conf_[read|write]: Read/Write 0xCF8/0xCFC filtered data. (conf_space*.c) Based on which field is probed, we either enable/disable the PCI device, change power state, read VPD, etc. The major goal of this call is to provide a Physical IRQ (PIRQ) to the guest. The PIRQ is Xen hypervisor global IRQ value irrespective of the IRQ is tied in to the IO-APIC, or is a vector. For GSI type interrupts, the PIRQ==GSI holds. For MSI/MSI-X the PIRQ value != Linux IRQ number (thought PIRQ==vector). Please note, that with Xen, all interrupts (except those level shared ones) are injected directly to the guest - there is no host interaction. XEN_PCI_OP_[enable|disable]_msi[|x] (pciback_ops.c) Enables/disables the MSI/MSI-X capability of the device. These operations setup the MSI/MSI-X vectors for the guest and pass them to the frontend. When the device is activated, the interrupts are directly injected in the guest without involving the host. XEN_PCI_OP_aer_[detected|resume|mmio|slotreset]: In case of failure, perform the appropriate AER commands on the guest. Right now that is a cop-out - we just kill the guest. Besides implementing those commands, it can also - hide a PCI device from the host. When booting up, the user can specify xen-pciback.hide=(1:0:0)(BDF..) so that host does not try to use the device. The driver was lifted from linux-2.6.18.hg tree and fixed up so that it could compile under v3.0. Per suggestion from Jesse Barnes moved the driver to drivers/xen/xen-pciback. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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- 12 7月, 2011 2 次提交
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由 Konrad Rzeszutek Wilk 提交于
In the past (2.6.38) the 'xen_allocate_pirq_gsi' would allocate an entry in a Linux IRQ -> {XEN_IRQ, type, event, ..} array. All of that has been removed in 2.6.39 and the Xen IRQ subsystem uses an linked list that is populated when the call to 'xen_allocate_irq_gsi' (universally done from any of the xen_bind_* calls) is done. The 'xen_allocate_pirq_gsi' is a NOP and there is no need for it anymore so lets remove it. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
Since they are only called once and the rest of the pci_xen_* functions follow the same pattern of setup. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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- 09 7月, 2011 1 次提交
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由 Dan Magenheimer 提交于
This patch introduces two in-kernel drivers for Xen transcendent memory ("tmem") functionality that complement cleancache and frontswap. Both use control theory to dynamically adjust and optimize memory utilization. Selfballooning controls the in-kernel Xen balloon driver, targeting a goal value (vm_committed_as), thus pushing less frequently used clean page cache pages (through the cleancache code) into Xen tmem where Xen can balance needs across all VMs residing on the physical machine. Frontswap-selfshrinking controls the number of pages in frontswap, driving it towards zero (effectively doing a partial swapoff) when in-kernel memory pressure subsides, freeing up RAM for other VMs. More detail is provided in the header comment of xen-selfballooning.c. Signed-off-by: NDan Magenheimer <dan.magenheimer@oracle.com> [v8: konrad.wilk@oracle.com: set default enablement depending on frontswap] [v7: konrad.wilk@oracle.com: fix capitalization and punctuation in comments] [v6: fix frontswap-selfshrinking initialization] [v6: konrad.wilk@oracle.com: fix init pr_infos; add comments about swap] [v5: konrad.wilk@oracle.com: add NULL to attr list; move inits up to decls] [v4: dkiper@net-space.pl: use strict_strtoul plus a few syntactic nits] [v3: konrad.wilk@oracle.com: fix potential divides-by-zero] [v3: konrad.wilk@oracle.com: add many more comments, fix nits] [v2: rebased to linux-3.0-rc1] [v2: Ian.Campbell@citrix.com: reorganize as new file (xen-selfballoon.c)] [v2: dkiper@net-space.pl: proper access to vm_committed_as] [v2: dkiper@net-space.pl: accounting fixes] Cc: Jan Beulich <JBeulich@novell.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: <xen-devel@lists.xensource.com>
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- 01 7月, 2011 2 次提交
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由 Bastian Blank 提交于
All the Xen backend drivers are assigned to a special bus type xen-backend. This patch exports xen-backend:* names through modalias and uevent to autoload them. Signed-off-by: NBastian Blank <waldi@debian.org> Acked-by: NIan Campbell <ian.campbell@citrix.com> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Bastian Blank 提交于
The xenbus bus type uses device_create_file to assign all used device attributes. However it does not remove them when the device goes away. This patch uses the dev_attrs field of the bus type to specify default attributes for all devices. Signed-off-by: NBastian Blank <waldi@debian.org> Acked-by: NIan Campbell <ian.campbell@citrix.com> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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- 18 6月, 2011 1 次提交
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由 Dan Magenheimer 提交于
Provide the shim code for frontswap for Xen tmem even if the frontswap patchset is not present yet. (The egg is before the chicken.) Signed-off-by: NDan Magenheimer <dan.magenheimer@oracle.com> Reviewed-by: NKonrad Wilk <konrad.wilk@oracle.com>
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- 16 6月, 2011 1 次提交
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由 Konrad Rzeszutek Wilk 提交于
.. which is quite benign. drivers/xen/events.c:398: warning: unused variable ‘desc’ Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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- 07 6月, 2011 1 次提交
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由 FUJITA Tomonori 提交于
By default the io_tlb_nslabs is set to zero, and gets set to whatever value is passed in via swiotlb_init_with_tbl function. The default value passed in is 64MB. However, if the user provides the 'swiotlb=<nslabs>' the default value is ignored and the value provided by the user is used... Except when the SWIOTLB is used under Xen - there the default value of 64MB is used and the Xen-SWIOTLB has no mechanism to get the 'io_tlb_nslabs' filled out by setup_io_tlb_npages functions. This patch provides a function for the Xen-SWIOTLB to call to see if the io_tlb_nslabs is set and if so use that value. Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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- 31 5月, 2011 1 次提交
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由 Stefano Stabellini 提交于
Do not use pirq_needs_eoi to decide which irq handler to use because Xen always returns true if the guest does not support pirq_eoi_map. Use the trigger information we already have from MP-tables and ACPI. Signed-off-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com> Reported-by: NThomas Goetz <tom.goetz@virtualcomputer.com> Tested-by: NThomas Goetz <tom.goetz@virtualcomputer.com> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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- 27 5月, 2011 1 次提交
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由 Dan Magenheimer 提交于
This patch provides a shim between the kernel-internal cleancache API (see Documentation/mm/cleancache.txt) and the Xen Transcendent Memory ABI (see http://oss.oracle.com/projects/tmem). Xen tmem provides "hypervisor RAM" as an ephemeral page-oriented pseudo-RAM store for cleancache pages, shared cleancache pages, and frontswap pages. Tmem provides enterprise-quality concurrency, full save/restore and live migration support, compression and deduplication. A presentation showing up to 8% faster performance and up to 52% reduction in sectors read on a kernel compile workload, despite aggressive in-kernel page reclamation ("self-ballooning") can be found at: http://oss.oracle.com/projects/tmem/dist/documentation/presentations/TranscendentMemoryXenSummit2010.pdfSigned-off-by: NDan Magenheimer <dan.magenheimer@oracle.com> Reviewed-by: NJeremy Fitzhardinge <jeremy@goop.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Rik Van Riel <riel@redhat.com> Cc: Jan Beulich <JBeulich@novell.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: Andreas Dilger <adilger@sun.com> Cc: Ted Ts'o <tytso@mit.edu> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <joel.becker@oracle.com> Cc: Nitin Gupta <ngupta@vflare.org>
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- 19 5月, 2011 2 次提交
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由 Daniel Kiper 提交于
Cleanup code/data sections definitions accordingly to include/linux/init.h. Signed-off-by: NDaniel Kiper <dkiper@net-space.pl> Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
We only supported the M2P (and P2M) override only for the GNTMAP_contains_pte type mappings. Meaning that we grants operations would "contain the machine address of the PTE to update" If the flag is unset, then the grant operation is "contains a host virtual address". The latter case means that the Hypervisor takes care of updating our page table (specifically the PTE entry) with the guest's MFN. As such we should not try to do anything with the PTE. Previous to this patch we would try to clear the PTE which resulted in Xen hypervisor being upset with us: (XEN) mm.c:1066:d0 Attempt to implicitly unmap a granted PTE c0100000ccc59067 (XEN) domain_crash called from mm.c:1067 (XEN) Domain 0 (vcpu#0) crashed on cpu#3: (XEN) ----[ Xen-4.0-110228 x86_64 debug=y Not tainted ]---- and crashing us. This patch allows us to inhibit the PTE clearing in the PV guest if the GNTMAP_contains_pte is not set. On the m2p_remove_override path we provide the same parameter. Sadly in the grant-table driver we do not have a mechanism to tell m2p_remove_override whether to clear the PTE or not. Since the grant-table driver is used by user-space, we can safely assume that it operates only on PTE's. Hence the implementation for it to work on !GNTMAP_contains_pte returns -EOPNOTSUPP. In the future we can implement the support for this. It will require some extra accounting structure to keep track of the page[i], and the flag. [v1: Added documentation details, made it return -EOPNOTSUPP instead of trying to do a half-way implementation] Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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- 13 5月, 2011 1 次提交
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由 Ian Campbell 提交于
Various merges over time have led to rather a mish-mash of indentation. Signed-off-by: NIan Campbell <ian.campbell@citrix.com> Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel@lists.xensource.com Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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- 12 5月, 2011 1 次提交
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由 Rafael J. Wysocki 提交于
Since suspend, resume and shutdown operations in struct sysdev_class and struct sysdev_driver are not used any more, remove them. Also drop sysdev_suspend(), sysdev_resume() and sysdev_shutdown() used for executing those operations and modify all of their users accordingly. This reduces kernel code size quite a bit and reduces its complexity. Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 11 5月, 2011 1 次提交
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由 Stefano Stabellini 提交于
Change the irq handler of evtchns and pirqs that don't need EOI (pirqs that correspond to physical edge interrupts) to handle_edge_irq. Use handle_fasteoi_irq for pirqs that need eoi (they generally correspond to level triggered irqs), no risk in loosing interrupts because we have to EOI the irq anyway. This change has the following benefits: - it uses the very same handlers that Linux would use on native for the same irqs (handle_edge_irq for edge irqs and msis, and handle_fasteoi_irq for everything else); - it uses these handlers in the same way native code would use them: it let Linux mask\unmask and ack the irq when Linux want to mask\unmask and ack the irq; - it fixes a problem occurring when a driver calls disable_irq() in its handler: the old code was unconditionally unmasking the evtchn even if the irq is disabled when irq_eoi was called. See Documentation/DocBook/genericirq.tmpl for more informations. Signed-off-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com> [v1: Fixed space/tab issues] Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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- 20 4月, 2011 1 次提交
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由 Rafael J. Wysocki 提交于
Device suspend/resume infrastructure is used not only by the suspend and hibernate code in kernel/power, but also by APM, Xen and the kexec jump feature. However, commit 40dc166c (PM / Core: Introduce struct syscore_ops for core subsystems PM) failed to add syscore_suspend() and syscore_resume() calls to that code, which generally leads to breakage when the features in question are used. To fix this problem, add the missing syscore_suspend() and syscore_resume() calls to arch/x86/kernel/apm_32.c, kernel/kexec.c and drivers/xen/manage.c. Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Acked-by: NGreg Kroah-Hartman <gregkh@suse.de> Acked-by: NIan Campbell <ian.campbell@citrix.com>
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- 19 4月, 2011 3 次提交
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由 Konrad Rzeszutek Wilk 提交于
.. and modify the Makefile and Kconfig files appropriately. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
They were used to check if the queue does not have QUEUE_FLAG_DEAD set. That is not necessary anymore as the 'submit_io' call ends up doing that for us. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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由 Konrad Rzeszutek Wilk 提交于
After the commit 0faa8cca (" xen/blkback: remove per-queue plugging") we forgot to retrieve the 'struct request_queue' from the block device. This puts the functionality back in and fixes a NULL pointer bug. Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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