summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/mm
Commit message (Collapse)AuthorAgeFilesLines
* powerpc: Rename USER_ESID_BITS* to ESID_BITS*Aneesh Kumar K.V2013-03-202-3/+3
| | | | | | | | | | | | | commit af81d7878c641629f2693ae3fdaf74b4af14dfca upstream. Now we use ESID_BITS of kernel address to build proto vsid. So rename USER_ESIT_BITS to ESID_BITS Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* powerpc: Update kernel VSID rangeAneesh Kumar K.V2013-03-204-41/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | commit c60ac5693c47df32a2b4b18af97fca5635def015 upstream. This patch change the kernel VSID range so that we limit VSID_BITS to 37. This enables us to support 64TB with 65 bit VA (37+28). Without this patch we have boot hangs on platforms that only support 65 bit VA. With this patch we now have proto vsid generated as below: We first generate a 37-bit "proto-VSID". Proto-VSIDs are generated from mmu context id and effective segment id of the address. For user processes max context id is limited to ((1ul << 19) - 5) for kernel space, we use the top 4 context ids to map address as below 0x7fffc - [ 0xc000000000000000 - 0xc0003fffffffffff ] 0x7fffd - [ 0xd000000000000000 - 0xd0003fffffffffff ] 0x7fffe - [ 0xe000000000000000 - 0xe0003fffffffffff ] 0x7ffff - [ 0xf000000000000000 - 0xf0003fffffffffff ] Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Tested-by: Geoff Levand <geoff@infradead.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* powerpc: Fix STAB initializationBenjamin Herrenschmidt2013-03-201-0/+2
| | | | | | | | | | | | | | commit 13938117a57f88a22f0df9722a5db7271fda85cd upstream. Commit f5339277eb8d3aed37f12a27988366f68ab68930 accidentally removed more than just iSeries bits and took out the call to stab_initialize() thus breaking support for POWER3 processors. Put it back. (Yes, nobody noticed until now ...) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* powerpc/mm: Fix hash computation functionAneesh Kumar K.V2013-02-041-27/+35
| | | | | | | | | | | | | | | | | | | | | The ASM version of hash computation function was truncating the upper bit. Make the ASM version similar to hpt_hash function. Remove masking vsid bits. Without this patch, we observed hang during bootup due to not satisfying page fault request correctly. The fault handler used wrong hash values to update the HPTE. Hence we kept looping with page fault. hash_page(ea=000001003e260008, access=203, trap=300 ip=3fff91787134 dsisr 42000000 The computed value of hash 000000000f22f390 update: avpnv=4003e46054003e00, hash=000000000722f390, f=80000006, psize: 2 ... BenH: The over-masking has been there for ever but only hurts with the new 64T support introduced in 3.7 Reported-by: Mike Qiu <qiudayu@linux.vnet.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Tested-by: Mike Qiu <qiudayu@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: <stable@vger.kernel.org> [v3.7]
* POWERPC: drivers: remove __dev* attributes.Greg Kroah-Hartman2013-01-031-4/+0
| | | | | | | | | | | | | | | | CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge branch 'next' of ↵Linus Torvalds2012-12-182-23/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc update from Benjamin Herrenschmidt: "The main highlight is probably some base POWER8 support. There's more to come such as transactional memory support but that will wait for the next one. Overall it's pretty quiet, or rather I've been pretty poor at picking things up from patchwork and reviewing them this time around and Kumar no better on the FSL side it seems..." * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (73 commits) powerpc+of: Rename and fix OF reconfig notifier error inject module powerpc: mpc5200: Add a3m071 board support powerpc/512x: don't compile any platform DIU code if the DIU is not enabled powerpc/mpc52xx: use module_platform_driver macro powerpc+of: Export of_reconfig_notifier_[register,unregister] powerpc/dma/raidengine: add raidengine device powerpc/iommu/fsl: Add PAMU bypass enable register to ccsr_guts struct powerpc/mpc85xx: Change spin table to cached memory powerpc/fsl-pci: Add PCI controller ATMU PM support powerpc/86xx: fsl_pcibios_fixup_bus requires CONFIG_PCI drivers/virt: the Freescale hypervisor driver doesn't need to check MSR[GS] powerpc/85xx: p1022ds: Use NULL instead of 0 for pointers powerpc: Disable relocation on exceptions when kexecing powerpc: Enable relocation on during exceptions at boot powerpc: Move get_longbusy_msecs into hvcall.h and remove duplicate function powerpc: Add wrappers to enable/disable relocation on exceptions powerpc: Add set_mode hcall powerpc: Setup relocation on exceptions for bare metal systems powerpc: Move initial mfspr LPCR out of __init_LPCR powerpc: Add relocation on exception vector handlers ...
| * Merge branch 'dt' into nextBenjamin Herrenschmidt2012-11-151-12/+0
| |\
| | * powerpc+of: Move of_drconf_cell struct definition to asm/prom.hNathan Fontenot2012-11-151-12/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves the definition of the of_drconf_cell struct to asm/prom.h to make it available for all powerpc/pseries code. Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com> Acked-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/47x: Use the new ppc-opcode infrastructureTony Breeds2012-11-151-11/+4
| |/ | | | | | | | | | | | | | | | | | | Don't use 47x only #defines for TLBIVAX or ICBT, supply and use helpers in ppc-opcode.h This fixes a compile breakage. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | Merge branch 'akpm' (Andrew's patch-bomb)Linus Torvalds2012-12-131-15/+12
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge misc VM changes from Andrew Morton: "The rest of most-of-MM. The other MM bits await a slab merge. This patch includes the addition of a huge zero_page. Not a performance boost but it an save large amounts of physical memory in some situations. Also a bunch of Fujitsu engineers are working on memory hotplug. Which, as it turns out, was badly broken. About half of their patches are included here; the remainder are 3.8 material." However, this merge disables CONFIG_MOVABLE_NODE, which was totally broken. We don't add new features with "default y", nor do we add Kconfig questions that are incomprehensible to most people without any help text. Does the feature even make sense without compaction or memory hotplug? * akpm: (54 commits) mm/bootmem.c: remove unused wrapper function reserve_bootmem_generic() mm/memory.c: remove unused code from do_wp_page() asm-generic, mm: pgtable: consolidate zero page helpers mm/hugetlb.c: fix warning on freeing hwpoisoned hugepage hwpoison, hugetlbfs: fix RSS-counter warning hwpoison, hugetlbfs: fix "bad pmd" warning in unmapping hwpoisoned hugepage mm: protect against concurrent vma expansion memcg: do not check for mm in __mem_cgroup_count_vm_event tmpfs: support SEEK_DATA and SEEK_HOLE (reprise) mm: provide more accurate estimation of pages occupied by memmap fs/buffer.c: remove redundant initialization in alloc_page_buffers() fs/buffer.c: do not inline exported function writeback: fix a typo in comment mm: introduce new field "managed_pages" to struct zone mm, oom: remove statically defined arch functions of same name mm, oom: remove redundant sleep in pagefault oom handler mm, oom: cleanup pagefault oom handler memory_hotplug: allow online/offline memory to result movable node numa: add CONFIG_MOVABLE_NODE for movable-dedicated node mm, memcg: avoid unnecessary function call when memcg is disabled ...
| * | mm, oom: remove statically defined arch functions of same nameDavid Rientjes2012-12-121-15/+12
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | out_of_memory() is a globally defined function to call the oom killer. x86, sh, and powerpc all use a function of the same name within file scope in their respective fault.c unnecessarily. Inline the functions into the pagefault handlers to clean the code up. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Reviewed-by: Michal Hocko <mhocko@suse.cz> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* / Fix misspellings of "whether" in comments.Adam Buchbinder2012-11-191-1/+1
|/ | | | | | | | "Whether" is misspelled in various comments across the tree; this fixes them. No code changes. Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* readahead: fault retry breaks mmap file read random detectionShaohua Li2012-10-091-0/+1
| | | | | | | | | | | | | | | | | | | .fault now can retry. The retry can break state machine of .fault. In filemap_fault, if page is miss, ra->mmap_miss is increased. In the second try, since the page is in page cache now, ra->mmap_miss is decreased. And these are done in one fault, so we can't detect random mmap file access. Add a new flag to indicate .fault is tried once. In the second try, skip ra->mmap_miss decreasing. The filemap_fault state machine is ok with it. I only tested x86, didn't test other archs, but looks the change for other archs is obvious, but who knows :) Signed-off-by: Shaohua Li <shaohua.li@fusionio.com> Cc: Rik van Riel <riel@redhat.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'next' of ↵Linus Torvalds2012-10-0615-237/+357
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc Pull powerpc updates from Benjamin Herrenschmidt: "Some highlights in addition to the usual batch of fixes: - 64TB address space support for 64-bit processes by Aneesh Kumar - Gavin Shan did a major cleanup & re-organization of our EEH support code (IBM fancy PCI error handling & recovery infrastructure) which paves the way for supporting different platform backends, along with some rework of the PCIe code for the PowerNV platform in order to remove home made resource allocations and instead use the generic code (which is possible after some small improvements to it done by Gavin). - Uprobes support by Ananth N Mavinakayanahalli - A pile of embedded updates from Freescale folks, including new SoC and board supports, more KVM stuff including preparing for 64-bit BookE KVM support, ePAPR 1.1 updates, etc..." Fixup trivial conflicts in drivers/scsi/ipr.c * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (146 commits) powerpc/iommu: Fix multiple issues with IOMMU pools code powerpc: Fix VMX fix for memcpy case driver/mtd:IFC NAND:Initialise internal SRAM before any write powerpc/fsl-pci: use 'Header Type' to identify PCIE mode powerpc/eeh: Don't release eeh_mutex in eeh_phb_pe_get powerpc: Remove tlb batching hack for nighthawk powerpc: Set paca->data_offset = 0 for boot cpu powerpc/perf: Sample only if SIAR-Valid bit is set in P7+ powerpc/fsl-pci: fix warning when CONFIG_SWIOTLB is disabled powerpc/mpc85xx: Update interrupt handling for IFC controller powerpc/85xx: Enable USB support in p1023rds_defconfig powerpc/smp: Do not disable IPI interrupts during suspend powerpc/eeh: Fix crash on converting OF node to edev powerpc/eeh: Lock module while handling EEH event powerpc/kprobe: Don't emulate store when kprobe stwu r1 powerpc/kprobe: Complete kprobe and migrate exception frame powerpc/kprobe: Introduce a new thread flag powerpc: Remove unused __get_user64() and __put_user64() powerpc/eeh: Global mutex to protect PE tree powerpc/eeh: Remove EEH PE for normal PCI hotplug ...
| * powerpc: Remove tlb batching hack for nighthawkMichael Ellerman2012-09-271-25/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In hpte_init_native() we call tlb_batching_enabled() to decide if we should setup ppc_md.flush_hash_range. tlb_batching_enabled() checks the _unflattened_ device tree, to see if we are running on a nighthawk. Since commit a223535 ("dont allow pSeries_probe to succeed without initialising MMU", Dec 2006), hpte_init_native() has been called from pSeries_probe() - at which point we have not yet unflattened the device tree. This means tlb_batching_enabled() will always return true, so the hack has effectively been disabled since Dec 2006. Ergo, I think we can drop it. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * Merge remote-tracking branch 'kumar/next' into nextBenjamin Herrenschmidt2012-09-181-2/+1
| |\
| | * powerpc/swiotlb: Enable at early stage and disable if not necessaryJia Hongtao2012-09-121-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the dependency on PCI initialization for SWIOTLB initialization. So that PCI can be initialized at proper time. SWIOTLB is partly determined by PCI inbound/outbound map which is assigned in PCI initialization. But swiotlb_init() should be done at the stage of mem_init() which is much earlier than PCI initialization. So we reserve the memory for SWIOTLB first and free it if not necessary. All boards are converted to fit this change. Signed-off-by: Jia Hongtao <B38951@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Acked-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| * | powerpc/mm: Make some of the PGTABLE_RANGE dependency explicitAneesh Kumar K.V2012-09-172-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | slice array size and slice mask size depend on PGTABLE_RANGE. Reviewed-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/mm: Update VSID allocation documentationAneesh Kumar K.V2012-09-171-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | This update the proto-VSID and VSID scramble related information to be more generic by using names instead of current values. Reviewed-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/mm: Add 64TB supportAneesh Kumar K.V2012-09-171-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | Increase max addressable range to 64TB. This is not tested on real hardware yet. Reviewed-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/mm: Use 32bit array for slb cacheAneesh Kumar K.V2012-09-171-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | With larger vsid we need to track more bits of ESID in slb cache for slb invalidate. Reviewed-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/mm: Use the required number of VSID bits in slbmteAneesh Kumar K.V2012-09-171-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ASM_VSID_SCRAMBLE can leave non-zero bits in the high 28 bits of the result for 256MB segment (40 bits for 1T segment). Properly mask them before using the values in slbmte Reviewed-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/mm: Increase the slice range to 64TBAneesh Kumar K.V2012-09-173-53/+99
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes the high psizes mask as an unsigned char array so that we can have more than 16TB. Currently we support upto 64TB Reviewed-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/mm: Convert virtual address to vpnAneesh Kumar K.V2012-09-175-113/+161
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch convert different functions to take virtual page number instead of virtual address. Virtual page number is virtual address shifted right by VPN_SHIFT (12) bits. This enable us to have an address range of upto 76 bits. Reviewed-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/mm: Simplify hpte_decodeAneesh Kumar K.V2012-09-171-21/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch simplify hpte_decode for easy switching of virtual address to virtual page number in the later patch Reviewed-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/mm: Replace open coded CONTEXT_BITS valueAneesh Kumar K.V2012-09-171-1/+1
| |/ | | | | | | | | | | | | | | | | To clarify the meaning for future readers, replace the open coded 19 with CONTEXT_BITS Reviewed-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * powerpc/mm: Match variable types to APIJoe MacDonald2012-09-101-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sys_subpage_prot() takes an unsigned long for 'addr' then does some stuff with it and the result is stored in a signed int, i, which is eventually used as the size parameter in a copy_from_user call. Update 'i' to be an unsigned long as well and since 'nw' is used in a size_t context which, depending on whether this is 32- or 64-bit may be unsigned int or unsigned long, switch that to a size_t and always be right. Finally, since we're in the neighbourhood, make the same changes to subpage_prot_clear(). Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Joe MacDonald <joe.macdonald@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * powerpc: Change memory_limit from phys_addr_t to unsigned long longSuzuki Poulose2012-09-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are some device-tree nodes, whose values are of type phys_addr_t. The phys_addr_t is variable sized based on the CONFIG_PHSY_T_64BIT. Change these to a fixed unsigned long long for consistency. This patch does the change only for memory_limit. The following is a list of such variables which need the change: 1) kernel_end, crashk_size - in arch/powerpc/kernel/machine_kexec.c 2) (struct resource *)crashk_res.start - We could export a local static variable from machine_kexec.c. Changing the above values might break the kexec-tools. So, I will fix kexec-tools first to handle the different sized values and then change the above. Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Suzuki K. Poulose <suzuki@in.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * Merge branch 'merge' into nextBenjamin Herrenschmidt2012-09-072-3/+5
| |\ | | | | | | | | | Brings in various bug fixes from 3.6-rcX
| * | powerpc/booke64: Use SPRG0/3 scratch for bolted TLB miss & crit intMihai Caraman2012-09-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Embedded.Hypervisor category defines GSPRG0..3 physical registers for guests. Avoid SPRG4-7 usage as scratch in host exception handlers, otherwise guest SPRG4-7 registers will be clobbered. For bolted TLB miss exception handlers, which is the version currently supported by KVM, use SPRN_SPRG_GEN_SCRATCH aka SPRG0 instead of SPRN_SPRG_TLB_SCRATCH aka SPRG6. Keep using TLB PACA slots to fit in one 64-byte cache line. For critical exception handlers use SPRG3 instead of SPRG7. Provide a routine to store and restore user-visible SPRGs. This will be subsequently used to restore VDSO information in SPRG3. Add EX_R13 to paca slots to free up SPRG3 and change the critical exception epilog to use it. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/booke64: Add DO_KVM kernel hooksMihai Caraman2012-09-051-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | Hook DO_KVM macro into 64-bit booke for KVM integration. Extend interrupt handlers' parameter list with interrupt vector numbers to accomodate the macro. Only the bolted version of tlb miss handers is addressed now. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc: Add trap_nr to thread_structAnanth N Mavinakayanahalli2012-09-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add thread_struct.trap_nr and use it to store the last exception the thread experienced. In this patch, we populate the field at various places where we force_sig_info() to the process. This is also used in uprobes to determine if the probed instruction caused an exception. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc: Remove all includes of <asm/abs_addr.h>Michael Ellerman2012-09-053-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | It's empty now, apart from other includes. Fixup a few files that were getting things via this header. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/mm: Remove uses of abs_to_virt() and virt_to_abs()Michael Ellerman2012-09-051-2/+1
| | | | | | | | | | | | | | | | | | | | | These days they are just __va() and __pa() respectively. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * | powerpc/mm: Replace abs_to_virt() with __va()Michael Ellerman2012-09-051-2/+1
| | | | | | | | | | | | | | | | | | | | | abs_to_virt() is just a wrapper around __va(), call __va() directly. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2012-10-021-1/+1
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace Pull user namespace changes from Eric Biederman: "This is a mostly modest set of changes to enable basic user namespace support. This allows the code to code to compile with user namespaces enabled and removes the assumption there is only the initial user namespace. Everything is converted except for the most complex of the filesystems: autofs4, 9p, afs, ceph, cifs, coda, fuse, gfs2, ncpfs, nfs, ocfs2 and xfs as those patches need a bit more review. The strategy is to push kuid_t and kgid_t values are far down into subsystems and filesystems as reasonable. Leaving the make_kuid and from_kuid operations to happen at the edge of userspace, as the values come off the disk, and as the values come in from the network. Letting compile type incompatible compile errors (present when user namespaces are enabled) guide me to find the issues. The most tricky areas have been the places where we had an implicit union of uid and gid values and were storing them in an unsigned int. Those places were converted into explicit unions. I made certain to handle those places with simple trivial patches. Out of that work I discovered we have generic interfaces for storing quota by projid. I had never heard of the project identifiers before. Adding full user namespace support for project identifiers accounts for most of the code size growth in my git tree. Ultimately there will be work to relax privlige checks from "capable(FOO)" to "ns_capable(user_ns, FOO)" where it is safe allowing root in a user names to do those things that today we only forbid to non-root users because it will confuse suid root applications. While I was pushing kuid_t and kgid_t changes deep into the audit code I made a few other cleanups. I capitalized on the fact we process netlink messages in the context of the message sender. I removed usage of NETLINK_CRED, and started directly using current->tty. Some of these patches have also made it into maintainer trees, with no problems from identical code from different trees showing up in linux-next. After reading through all of this code I feel like I might be able to win a game of kernel trivial pursuit." Fix up some fairly trivial conflicts in netfilter uid/git logging code. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (107 commits) userns: Convert the ufs filesystem to use kuid/kgid where appropriate userns: Convert the udf filesystem to use kuid/kgid where appropriate userns: Convert ubifs to use kuid/kgid userns: Convert squashfs to use kuid/kgid where appropriate userns: Convert reiserfs to use kuid and kgid where appropriate userns: Convert jfs to use kuid/kgid where appropriate userns: Convert jffs2 to use kuid and kgid where appropriate userns: Convert hpfs to use kuid and kgid where appropriate userns: Convert btrfs to use kuid/kgid where appropriate userns: Convert bfs to use kuid/kgid where appropriate userns: Convert affs to use kuid/kgid wherwe appropriate userns: On alpha modify linux_to_osf_stat to use convert from kuids and kgids userns: On ia64 deal with current_uid and current_gid being kuid and kgid userns: On ppc convert current_uid from a kuid before printing. userns: Convert s390 getting uid and gid system calls to use kuid and kgid userns: Convert s390 hypfs to use kuid and kgid where appropriate userns: Convert binder ipc to use kuids userns: Teach security_path_chown to take kuids and kgids userns: Add user namespace support to IMA userns: Convert EVM to deal with kuids and kgids in it's hmac computation ...
| * | userns: On ppc convert current_uid from a kuid before printing.Eric W. Biederman2012-09-211-1/+1
| |/ | | | | | | | | | | Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* | powerpc/vphn: Fix arch_update_cpu_topology() return valueJesse Larrew2012-09-051-3/+4
| | | | | | | | | | | | | | | | | | | | | | arch_update_cpu_topology() should only return 1 when the topology has actually changed, and should return 0 otherwise. This patch fixes a potential bug where rebuild_sched_domains() would reinitialize the sched domains even when the topology hasn't changed. Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | KVM: PPC: Add cache flush on page mapAlexander Graf2012-08-161-0/+1
|/ | | | | | | | | When we map a page that wasn't icache cleared before, do so when first mapping it in KVM using the same information bits as the Linux mapping logic. That way we are 100% sure that any page we map does not have stale entries in the icache. Signed-off-by: Alexander Graf <agraf@suse.de>
* powerpc: Use CURRENT_THREAD_INFO instead of open coded assemblyStuart Yoder2012-07-111-4/+4
| | | | | Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Enforce usage of RA 0-R31 where possibleMichael Neuling2012-07-102-13/+13
| | | | | | | | | | Some macros use RA where when RA=R0 the values is 0, so make this the enforced mnemonic in the macro. Idea suggested by Andreas Schwab. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Fixes for instructions not using correct register namingMichael Neuling2012-07-101-5/+5
| | | | | | | | | | These macros are using integers where they could be using logical names since they take registers. We are going to enforce this soon, so fix these up now. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Merge STK_REG/PARAM/FRAMESIZEMichael Neuling2012-07-101-48/+40
| | | | | | | | Merge the defines of STACKFRAMESIZE, STK_REG, STK_PARAM from different places. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Fix usage of register macros getting ready for %r0 changeMichael Neuling2012-07-103-82/+82
| | | | | | | | | | | | | | Anything that uses a constructed instruction (ie. from ppc-opcode.h), need to use the new R0 macro, as %r0 is not going to work. Also convert usages of macros where we are just determining an offset (usually for a load/store), like: std r14,STK_REG(r14)(r1) Can't use STK_REG(r14) as %r14 doesn't work in the STK_REG macro since it's just calculating an offset. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* Merge branch 'merge' into nextBenjamin Herrenschmidt2012-07-101-1/+1
|\ | | | | | | We want to bring in the latest IRQ fixes
| * powerpc/numa: Avoid stupid uninitialized warning from gccBenjamin Herrenschmidt2012-07-101-1/+1
| | | | | | | | | | | | | | | | | | Newer gcc are being a bit blind here (it's pretty obvious we don't reach the code path using the array if we haven't initialized the pointer) but none of that is performance critical so let's just silence it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | powerpc/numa: Fix OF node refcounting bugGavin Shan2012-07-031-0/+2
|/ | | | | | | | | | The form affinity for NUMA is set to 1 if the firmware supports OPAL. Otherwise, we have to retrieve that from OF node "/chosen". For the latter case, OF node "/chosen" reference count was never decreased. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: Fix uninitialised error in numa.cMichael Neuling2012-06-291-1/+1
| | | | | | | | | | | | chroma_defconfig currently gives me this with gcc 4.6: arch/powerpc/mm/numa.c:638:13: error: 'dm' may be used uninitialized in this function [-Werror=uninitialized] It's a bogus warning/error since of_get_drconf_memory() only writes it anyway. Signed-off-by: Michael Neuling <mikey@neuling.org> cc: <stable@kernel.org> [v3.3+] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* powerpc: use clear_tasks_mm_cpumask()Anton Vorontsov2012-05-311-9/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Current CPU hotplug code has some task->mm handling issues: 1. Working with task->mm w/o getting mm or grabing the task lock is dangerous as ->mm might disappear (exit_mm() assigns NULL under task_lock(), so tasklist lock is not enough). We can't use get_task_mm()/mmput() pair as mmput() might sleep, so we must take the task lock while handle its mm. 2. Checking for process->mm is not enough because process' main thread may exit or detach its mm via use_mm(), but other threads may still have a valid mm. To fix this we would need to use find_lock_task_mm(), which would walk up all threads and returns an appropriate task (with task lock held). clear_tasks_mm_cpumask() has all the issues fixed, so let's use it. Suggested-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* powerpc: fix compile fail in hugetlb cmdline parsingPaul Gortmaker2012-05-071-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 9fb48c744ba6a4bf58b666f4e6fdac3008ea1bd4 "params: add 3rd arg to option handler callback signature" added an extra arg to the function, but didn't catch all the use cases needing it, causing this compile fail in mpc85xx_defconfig: arch/powerpc/mm/hugetlbpage.c:316:4: error: passing argument 7 of 'parse_args' from incompatible pointer type [-Werror] include/linux/moduleparam.h:317:12: note: expected 'int (*)(char *, char *, const char *)' but argument is of type 'int (*)(char *, char *)' This function has no need to printk out the "doing" value, so just add the arg as an "unused". Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Jim Cromie <jim.cromie@gmail.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Becky Bruce <beckyb@kernel.crashing.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
generated by cgit v1.2.3 (git 2.46.0) at 2025-04-24 17:47:21 +0000