- 25 Jul, 2011 1 commit
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Stephen Rothwell authored
So use mdelay(20) instead. Fixes this build error: ERROR: "__bad_udelay" [drivers/staging/gma500/psb_gfx.ko] undefined! Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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- 24 Jul, 2011 39 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-devLinus Torvalds authored
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: ata: PATA_ARASAN_CF depends on DMADEVICES ata: remove unnecessary code [libata] Prevent warning during PMP error recovery ahci: RAID-mode SATA patch for Intel Panther Point DeviceIDs pata_it821x: Fix RAID type display, by adding missing comma sata_dwc_460ex: fix error path ahci: Enable SB600 64bit DMA on Asus M3A libata: report link resume failure as KERN_WARNING instead of ERR ahci: move ahci_sb600_softreset to libahci.c and rename it libata: leave port thawed after reset failure ata: sata_via: Use dev_dbg ata: Add and use ata_print_version_once ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level> ata: Convert dev_printk(KERN_<LEVEL> to dev_<level>(
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Linus Torvalds authored
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (237 commits) ARM: 7004/1: fix traps.h compile warnings ARM: 6998/2: kernel: use proper memory barriers for bitops ARM: 6997/1: ep93xx: increase NR_BANKS to 16 for support of 128MB RAM ARM: Fix build errors caused by adding generic macros ARM: CPU hotplug: ensure we migrate all IRQs off a downed CPU ARM: CPU hotplug: pass in proper affinity mask on IRQ migration ARM: GIC: avoid routing interrupts to offline CPUs ARM: CPU hotplug: fix abuse of irqdesc->node ARM: 6981/2: mmci: adjust calculation of f_min ARM: 7000/1: LPAE: Use long long printk format for displaying the pud ARM: 6999/1: head, zImage: Always Enter the kernel in ARM state ARM: btc: avoid invalidating the branch target cache on kernel TLB maintanence ARM: ARM_DMA_ZONE_SIZE is no more ARM: mach-shark: move ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-sa1100: move ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-realview: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-pxa: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-ixp4xx: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-h720x: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ARM: mach-davinci: move from ARM_DMA_ZONE_SIZE to mdesc->dma_zone_size ...
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Sasha Levin authored
Current documentation referred to the old method of handling augmented trees. Update documentation to correspond with the changes done in commit b945d6b2 ("rbtree: Undo augmented trees performance damage and regression"). Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: David Woodhouse <David.Woodhouse@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Acked-by:
Ingo Molnar <mingo@elte.hu> Acked-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by:
Sasha Levin <levinsasha928@gmail.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Lasse Collin authored
<linux/kernel.h> is needed for min_t. The old version happened to work on x86 because <asm/unaligned.h> indirectly includes <linux/kernel.h>, but it didn't work on ARM. <linux/kernel.h> includes <asm/byteorder.h> so it's not necessary to include it explicitly anymore. Signed-off-by:
Lasse Collin <lasse.collin@tukaani.org> Cc: stable <stable@kernel.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds authored
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (21 commits) [S390] use siginfo for sigtrap signals [S390] dasd: add enhanced DASD statistics interface [S390] kvm: make sigp emerg smp capable [S390] disable cpu measurement alerts on a dying cpu [S390] initial cr0 bits [S390] iucv cr0 enablement bit [S390] race safe external interrupt registration [S390] remove tape block docu [S390] ap: toleration support for ap device type 10 [S390] cleanup program check handler prototypes [S390] remove kvm mmu reload on s390 [S390] Use gmap translation for accessing guest memory [S390] use gmap address spaces for kvm guest images [S390] kvm guest address space mapping [S390] fix s390 assembler code alignments [S390] move sie code to entry.S [S390] kvm: handle tprot intercepts [S390] qdio: clear shared DSCI before scheduling the queue handler [S390] reference bit testing for unmapped pages [S390] irqs: Do not trace arch_local_{*,irq_*} functions ...
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git://openrisc.net/jonas/linuxLinus Torvalds authored
* 'for-upstream' of git://openrisc.net/jonas/linux: (24 commits) OpenRISC: Add MAINTAINERS entry OpenRISC: Miscellaneous OpenRISC: Library routines OpenRISC: Headers OpenRISC: Traps OpenRISC: Module support OpenRISC: GPIO OpenRISC: Scheduling/Process management OpenRISC: Idle/Power management OpenRISC: System calls OpenRISC: IRQ OpenRISC: Timekeeping OpenRISC: DMA OpenRISC: PTrace OpenRISC: Build infrastructure OpenRISC: Signal handling OpenRISC: Memory management OpenRISC: Device tree OpenRISC: Boot code iomap: make IOPORT/PCI mapping functions conditional ...
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: modpost: Fix modpost's license checking V3 module: add /sys/module/<name>/uevent files module: change attr callbacks to take struct module_kobject modules: make arch's use default loader hooks modules: add default loader hook implementations param: fix return value handling in param_set_*
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
* 'kvm-updates/3.1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (143 commits) KVM: IOMMU: Disable device assignment without interrupt remapping KVM: MMU: trace mmio page fault KVM: MMU: mmio page fault support KVM: MMU: reorganize struct kvm_shadow_walk_iterator KVM: MMU: lockless walking shadow page table KVM: MMU: do not need atomicly to set/clear spte KVM: MMU: introduce the rules to modify shadow page table KVM: MMU: abstract some functions to handle fault pfn KVM: MMU: filter out the mmio pfn from the fault pfn KVM: MMU: remove bypass_guest_pf KVM: MMU: split kvm_mmu_free_page KVM: MMU: count used shadow pages on prepareing path KVM: MMU: rename 'pt_write' to 'emulate' KVM: MMU: cleanup for FNAME(fetch) KVM: MMU: optimize to handle dirty bit KVM: MMU: cache mmio info on page fault path KVM: x86: introduce vcpu_mmio_gva_to_gpa to cleanup the code KVM: MMU: do not update slot bitmap if spte is nonpresent KVM: MMU: fix walking shadow page table KVM guest: KVM Steal time registration ...
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git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xenLinus Torvalds authored
* 'upstream/xen-tracing2' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: xen/trace: use class for multicall trace xen/trace: convert mmu events to use DECLARE_EVENT_CLASS()/DEFINE_EVENT() xen/multicall: move *idx fields to start of mc_buffer xen/multicall: special-case singleton hypercalls xen/multicalls: add unlikely around slowpath in __xen_mc_entry() xen/multicalls: disable MC_DEBUG xen/mmu: tune pgtable alloc/release xen/mmu: use extend_args for more mmuext updates xen/trace: add tlb flush tracepoints xen/trace: add segment desc tracing xen/trace: add xen_pgd_(un)pin tracepoints xen/trace: add ptpage alloc/release tracepoints xen/trace: add mmu tracepoints xen/trace: add multicall tracing xen/trace: set up tracepoint skeleton xen/multicalls: remove debugfs stats trace/xen: add skeleton for Xen trace events
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (34 commits) crypto: caam - ablkcipher support crypto: caam - faster aead implementation crypto: caam - structure renaming crypto: caam - shorter names crypto: talitos - don't bad_key in ablkcipher setkey crypto: talitos - remove unused giv from ablkcipher methods crypto: talitos - don't set done notification in hot path crypto: talitos - ensure request ordering within a single tfm crypto: gf128mul - fix call to memset() crypto: s390 - support hardware accelerated SHA-224 crypto: algif_hash - Handle initial af_alg_make_sg error correctly crypto: sha1_generic - use SHA1_BLOCK_SIZE hwrng: ppc4xx - add support for ppc4xx TRNG crypto: crypto4xx - Perform read/modify/write on device control register crypto: caam - fix build warning when DEBUG_FS not configured crypto: arc4 - Fixed coding style issues crypto: crc32c - Fixed coding style issue crypto: omap-sham - do not schedule tasklet if there is no active requests crypto: omap-sham - clear device flags when finishing request crypto: omap-sham - irq handler must not clear error code ...
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Alessio Igor Bogani authored
The commit f02e8a65 sorts symbols placing each of them in its own elf section. The sorting and merging into the canonical sections are done by the linker. Unfortunately modpost to generate Module.symvers file parses vmlinux (already linked) and all modules object files (which aren't linked yet). These aren't sanitized by the linker yet. That breaks modpost that can't detect license properly for modules. This patch makes modpost aware of the new exported symbols structure. Thanks to Arnaud Lacombe <lacombar@gmail.com> and Anders Kaseorg <andersk@ksplice.com> for providing useful suggestions about code. This work was supported by a hardware donation from the CE Linux Forum. Reported-by:
Jan Beulich <jbeulich@novell.com> Signed-off-by:
Alessio Igor Bogani <abogani@kernel.org> Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au>
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Kay Sievers authored
Userspace wants to manage module parameters with udev rules. This currently only works for loaded modules, but not for built-in ones. To allow access to the built-in modules we need to re-trigger all module load events that happened before any userspace was running. We already do the same thing for all devices, subsystems(buses) and drivers. This adds the currently missing /sys/module/<name>/uevent files to all module entries. Signed-off-by:
Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (split & trivial fix)
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Kay Sievers authored
This simplifies the next patch, where we have an attribute on a builtin module (ie. module == NULL). Signed-off-by:
Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (split into 2)
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Jonas Bonn authored
This patch removes all the module loader hook implementations in the architecture specific code where the functionality is the same as that now provided by the recently added default hooks. Signed-off-by:
Jonas Bonn <jonas@southpole.se> Acked-by:
Mike Frysinger <vapier@gentoo.org> Acked-by:
Geert Uytterhoeven <geert@linux-m68k.org> Tested-by:
Michal Simek <monstr@monstr.eu> Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au>
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Jonas Bonn authored
The module loader code allows architectures to hook into the code by providing a small number of entry points that each arch must implement. This patch provides __weakly linked generic implementations of these entry points for architectures that don't need to do anything special. Signed-off-by:
Jonas Bonn <jonas@southpole.se> Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au>
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Satoru Moriya authored
In STANDARD_PARAM_DEF, param_set_* handles the case in which strtolfn returns -EINVAL but it may return -ERANGE. If it returns -ERANGE, param_set_* may set uninitialized value to the paramerter. We should handle both cases. The one of the cases in which strtolfn() returns -ERANGE is following: *Type of module parameter is long *Set the parameter more than LONG_MAX Signed-off-by:
Satoru Moriya <satoru.moriya@hds.com> Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au>
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Alex Williamson authored
IOMMU interrupt remapping support provides a further layer of isolation for device assignment by preventing arbitrary interrupt block DMA writes by a malicious guest from reaching the host. By default, we should require that the platform provides interrupt remapping support, with an opt-in mechanism for existing behavior. Both AMD IOMMU and Intel VT-d2 hardware support interrupt remapping, however we currently only have software support on the Intel side. Users wishing to re-enable device assignment when interrupt remapping is not supported on the platform can use the "allow_unsafe_assigned_interrupts=1" module option. [avi: break long lines] Signed-off-by:
Alex Williamson <alex.williamson@redhat.com> Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Add tracepoints to trace mmio page fault Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
The idea is from Avi: | We could cache the result of a miss in an spte by using a reserved bit, and | checking the page fault error code (or seeing if we get an ept violation or | ept misconfiguration), so if we get repeated mmio on a page, we don't need to | search the slot list/tree. | (https://lkml.org/lkml/2011/2/22/221) When the page fault is caused by mmio, we cache the info in the shadow page table, and also set the reserved bits in the shadow page table, so if the mmio is caused again, we can quickly identify it and emulate it directly Searching mmio gfn in memslots is heavy since we need to walk all memeslots, it can be reduced by this feature, and also avoid walking guest page table for soft mmu. [jan: fix operator precedence issue] Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Reorganize it for good using the cache Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Use rcu to protect shadow pages table to be freed, so we can safely walk it, it should run fastly and is needed by mmio page fault Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Now, the spte is just from nonprsent to present or present to nonprsent, so we can use some trick to set/clear spte non-atomicly as linux kernel does Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Introduce some interfaces to modify spte as linux kernel does: - mmu_spte_clear_track_bits, it set the spte from present to nonpresent, and track the stat bits(accessed/dirty) of spte - mmu_spte_clear_no_track, the same as mmu_spte_clear_track_bits except tracking the stat bits - mmu_spte_set, set spte from nonpresent to present - mmu_spte_update, only update the stat bits Now, it does not allowed to set spte from present to present, later, we can drop the atomicly opration for X86_32 host, and it is the preparing work to get spte on X86_32 host out of the mmu lock Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Introduce handle_abnormal_pfn to handle fault pfn on page fault path, introduce mmu_invalid_pfn to handle fault pfn on prefetch path It is the preparing work for mmio page fault support Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
If the page fault is caused by mmio, the gfn can not be found in memslots, and 'bad_pfn' is returned on gfn_to_hva path, so we can use 'bad_pfn' to identify the mmio page fault. And, to clarify the meaning of mmio pfn, we return fault page instead of bad page when the gfn is not allowd to prefetch Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
The idea is from Avi: | Maybe it's time to kill off bypass_guest_pf=1. It's not as effective as | it used to be, since unsync pages always use shadow_trap_nonpresent_pte, | and since we convert between the two nonpresent_ptes during sync and unsync. Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Split kvm_mmu_free_page to kvm_mmu_isolate_page and kvm_mmu_free_page One is used to remove the page from cache under mmu lock and the other is used to free page table out of mmu lock Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Move counting used shadow pages from commiting path to preparing path to reduce tlb flush on some paths Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
If 'pt_write' is true, we need to emulate the fault. And in later patch, we need to emulate the fault even though it is not a pt_write event, so rename it to better fit the meaning Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
gw->pte_access is the final access permission, since it is unified with gw->pt_access when we walked guest page table: FNAME(walk_addr_generic): pte_access = pt_access & FNAME(gpte_access)(vcpu, pte, true); Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
If dirty bit is not set, we can make the pte access read-only to avoid handing dirty bit everywhere Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
If the page fault is caused by mmio, we can cache the mmio info, later, we do not need to walk guest page table and quickly know it is a mmio fault while we emulate the mmio instruction Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Introduce vcpu_mmio_gva_to_gpa to translate the gva to gpa, we can use it to cleanup the code between read emulation and write emulation Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Set slot bitmap only if the spte is present Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Xiao Guangrong authored
Properly check the last mapping, and do not walk to the next level if last spte is met Signed-off-by:
Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by:
Avi Kivity <avi@redhat.com>
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Glauber Costa authored
This patch implements the kvm bits of the steal time infrastructure. The most important part of it, is the steal time clock. It is an continuous clock that shows the accumulated amount of steal time since vcpu creation. It is supposed to survive cpu offlining/onlining. [marcelo: fix build with CONFIG_KVM_GUEST=n] Signed-off-by:
Glauber Costa <glommer@redhat.com> Acked-by:
Rik van Riel <riel@redhat.com> Tested-by:
Eric B Munson <emunson@mgebm.net> CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> CC: Peter Zijlstra <peterz@infradead.org> CC: Avi Kivity <avi@redhat.com> CC: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by:
Avi Kivity <avi@redhat.com> Signed-off-by:
Marcelo Tosatti <mtosatti@redhat.com>
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Martin Schwidefsky authored
Provide additional information on SIGTRAP by using a sig_info signal. Use TRAP_BRKPT for breakpoints via illegal operation and TRAP_HWBKPT for breakpoints via program event recording. Provide the address of the instruction that caused the breakpoint via si_addr. While we are at it get rid of tracehook_consider_fatal_signal. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
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Stefan Weinhuber authored
This patch extends the DASD statistics to allow for a more detailed analysis of DASD I/O operations. In particular we want the statistics to provide answers to the following questions: - How many requests used a PAV alias? - How many requests used High Performance FICON? - How do read request perform versus write requests? The existing DASD statistics interface has several shortcomings - The interface for global data is a formatted text table in procfs (/proc/dasd/statistics). The layout is meant for human readers and is not to easy to parse. If values get to large for the table layout, they get scaled down. - The statistics which are collected per block device can be accessed via an ioctl interface, which can only be extended by defining a new ioctl. - There is no statistics interface for individual PAV base and alias devices. To overcome theses shortcomings we create a new DASD statistics interface in debugfs. This interface will contain one entry for global data, one per DASD block device, and one per DASD base and alias device. Each file contains the statistic data in easy to parse name/value and name/array pairs. The existing interfaces will remain functional, but they will not be extended. Signed-off-by:
Stefan Weinhuber <wein@de.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
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Christian Ehrhardt authored
SIGP emerg needs to pass the source vpu adress into __LC_CPU_ADDRESS of the target guest. Signed-off-by:
Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
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