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2020-08-18powerpc/kasan: Fix KASAN_SHADOW_START on BOOK3S_32Christophe Leroy1-1/+8
On BOOK3S_32, when we have modules and strict kernel RWX, modules are not in vmalloc space but in a dedicated segment that is below PAGE_OFFSET. So KASAN_SHADOW_START must take it into account. MODULES_VADDR can't be used because it is not defined yet in kasan.h Fixes: 6ca055322da8 ("powerpc/32s: Use dedicated segment for modules with STRICT_KERNEL_RWX") Signed-off-by: Christophe Leroy <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/6eddca2d5611fd57312a88eae31278c87a8fc99d.1596641224.git.christophe.leroy@csgroup.eu
2020-08-17powerpc/fixmap: Fix the size of the early debug areaChristophe Leroy1-1/+1
Commit ("03fd42d458fb powerpc/fixmap: Fix FIX_EARLY_DEBUG_BASE when page size is 256k") reworked the setup of the early debug area and mistakenly replaced 128 * 1024 by SZ_128. Change to SZ_128K to restore the original 128 kbytes size of the area. Fixes: 03fd42d458fb ("powerpc/fixmap: Fix FIX_EARLY_DEBUG_BASE when page size is 256k") Signed-off-by: Christophe Leroy <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/996184974d674ff984643778cf1cdd7fe58cc065.1597644194.git.christophe.leroy@csgroup.eu
2020-08-17powerpc/kernel: Cleanup machine check function declarationsMadhavan Srinivasan2-0/+12
__machine_check_early_realmode_p*() are currently declared as extern in cputable.c and because of this when compiled with "C=1" (which enables semantic checker) produces these warnings. CHECK arch/powerpc/kernel/mce_power.c arch/powerpc/kernel/mce_power.c:709:6: warning: symbol '__machine_check_early_realmode_p7' was not declared. Should it be static? arch/powerpc/kernel/mce_power.c:717:6: warning: symbol '__machine_check_early_realmode_p8' was not declared. Should it be static? arch/powerpc/kernel/mce_power.c:722:6: warning: symbol '__machine_check_early_realmode_p9' was not declared. Should it be static? arch/powerpc/kernel/mce_power.c:740:6: warning: symbol '__machine_check_early_realmode_p10' was not declared. Should it be static? Patch here moves the declaration to asm/mce.h and includes the same in cputable.c Fixes: ae744f3432d3 ("powerpc/book3s: Flush SLB/TLBs if we get SLB/TLB machine check errors on power8") Fixes: 7b9f71f974a1 ("powerpc/64s: POWER9 machine check handler") Signed-off-by: Madhavan Srinivasan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-08-17powerpc/perf: Add support for outputting extended regs in perf intr_regsAnju T Sudhakar2-0/+8
Add support for perf extended register capability in powerpc. The capability flag PERF_PMU_CAP_EXTENDED_REGS, is used to indicate the PMU which support extended registers. The generic code define the mask of extended registers as 0 for non supported architectures. Patch adds extended regs support for power9 platform by exposing MMCR0, MMCR1 and MMCR2 registers. REG_RESERVED mask needs update to include extended regs. PERF_REG_EXTENDED_MASK, contains mask value of the supported registers, is defined at runtime in the kernel based on platform since the supported registers may differ from one processor version to another and hence the MASK value. With the patch: available registers: r0 r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 r11 r12 r13 r14 r15 r16 r17 r18 r19 r20 r21 r22 r23 r24 r25 r26 r27 r28 r29 r30 r31 nip msr orig_r3 ctr link xer ccr softe trap dar dsisr sier mmcra mmcr0 mmcr1 mmcr2 PERF_RECORD_SAMPLE(IP, 0x1): 4784/4784: 0 period: 1 addr: 0 ... intr regs: mask 0xffffffffffff ABI 64-bit .... r0 0xc00000000012b77c .... r1 0xc000003fe5e03930 .... r2 0xc000000001b0e000 .... r3 0xc000003fdcddf800 .... r4 0xc000003fc7880000 .... r5 0x9c422724be .... r6 0xc000003fe5e03908 .... r7 0xffffff63bddc8706 .... r8 0x9e4 .... r9 0x0 .... r10 0x1 .... r11 0x0 .... r12 0xc0000000001299c0 .... r13 0xc000003ffffc4800 .... r14 0x0 .... r15 0x7fffdd8b8b00 .... r16 0x0 .... r17 0x7fffdd8be6b8 .... r18 0x7e7076607730 .... r19 0x2f .... r20 0xc00000001fc26c68 .... r21 0xc0002041e4227e00 .... r22 0xc00000002018fb60 .... r23 0x1 .... r24 0xc000003ffec4d900 .... r25 0x80000000 .... r26 0x0 .... r27 0x1 .... r28 0x1 .... r29 0xc000000001be1260 .... r30 0x6008010 .... r31 0xc000003ffebb7218 .... nip 0xc00000000012b910 .... msr 0x9000000000009033 .... orig_r3 0xc00000000012b86c .... ctr 0xc0000000001299c0 .... link 0xc00000000012b77c .... xer 0x0 .... ccr 0x28002222 .... softe 0x1 .... trap 0xf00 .... dar 0x0 .... dsisr 0x80000000000 .... sier 0x0 .... mmcra 0x80000000000 .... mmcr0 0x82008090 .... mmcr1 0x1e000000 .... mmcr2 0x0 ... thread: perf:4784 Signed-off-by: Anju T Sudhakar <[email protected]> Signed-off-by: Athira Rajeev <[email protected]> Tested-by: Nageswara R Sastry <[email protected]> Reviewed-by: Madhavan Srinivasan <[email protected]> Reviewed-by: Kajol Jain <[email protected]> Reviewed-and-tested-by: Ravi Bangoria <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-08-12Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds3-2/+18
Pull more KVM updates from Paolo Bonzini: "PPC: - Improvements and bugfixes for secure VM support, giving reduced startup time and memory hotplug support. - Locking fixes in nested KVM code - Increase number of guests supported by HV KVM to 4094 - Preliminary POWER10 support ARM: - Split the VHE and nVHE hypervisor code bases, build the EL2 code separately, allowing for the VHE code to now be built with instrumentation - Level-based TLB invalidation support - Restructure of the vcpu register storage to accomodate the NV code - Pointer Authentication available for guests on nVHE hosts - Simplification of the system register table parsing - MMU cleanups and fixes - A number of post-32bit cleanups and other fixes MIPS: - compilation fixes x86: - bugfixes - support for the SERIALIZE instruction" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (70 commits) KVM: MIPS/VZ: Fix build error caused by 'kvm_run' cleanup x86/kvm/hyper-v: Synic default SCONTROL MSR needs to be enabled MIPS: KVM: Convert a fallthrough comment to fallthrough MIPS: VZ: Only include loongson_regs.h for CPU_LOONGSON64 x86: Expose SERIALIZE for supported cpuid KVM: x86: Don't attempt to load PDPTRs when 64-bit mode is enabled KVM: arm64: Move S1PTW S2 fault logic out of io_mem_abort() KVM: arm64: Don't skip cache maintenance for read-only memslots KVM: arm64: Handle data and instruction external aborts the same way KVM: arm64: Rename kvm_vcpu_dabt_isextabt() KVM: arm: Add trace name for ARM_NISV KVM: arm64: Ensure that all nVHE hyp code is in .hyp.text KVM: arm64: Substitute RANDOMIZE_BASE for HARDEN_EL2_VECTORS KVM: arm64: Make nVHE ASLR conditional on RANDOMIZE_BASE KVM: PPC: Book3S HV: Rework secure mem slot dropping KVM: PPC: Book3S HV: Move kvmppc_svm_page_out up KVM: PPC: Book3S HV: Migrate hot plugged memory KVM: PPC: Book3S HV: In H_SVM_INIT_DONE, migrate remaining normal-GFNs to secure-GFNs KVM: PPC: Book3S HV: Track the state GFNs associated with secure VMs KVM: PPC: Book3S HV: Disable page merging in H_SVM_INIT_START ...
2020-08-12Merge branch 'akpm' (patches from Andrew)Linus Torvalds1-2/+1
Merge more updates from Andrew Morton: - most of the rest of MM (memcg, hugetlb, vmscan, proc, compaction, mempolicy, oom-kill, hugetlbfs, migration, thp, cma, util, memory-hotplug, cleanups, uaccess, migration, gup, pagemap), - various other subsystems (alpha, misc, sparse, bitmap, lib, bitops, checkpatch, autofs, minix, nilfs, ufs, fat, signals, kmod, coredump, exec, kdump, rapidio, panic, kcov, kgdb, ipc). * emailed patches from Andrew Morton <[email protected]>: (164 commits) mm/gup: remove task_struct pointer for all gup code mm: clean up the last pieces of page fault accountings mm/xtensa: use general page fault accounting mm/x86: use general page fault accounting mm/sparc64: use general page fault accounting mm/sparc32: use general page fault accounting mm/sh: use general page fault accounting mm/s390: use general page fault accounting mm/riscv: use general page fault accounting mm/powerpc: use general page fault accounting mm/parisc: use general page fault accounting mm/openrisc: use general page fault accounting mm/nios2: use general page fault accounting mm/nds32: use general page fault accounting mm/mips: use general page fault accounting mm/microblaze: use general page fault accounting mm/m68k: use general page fault accounting mm/ia64: use general page fault accounting mm/hexagon: use general page fault accounting mm/csky: use general page fault accounting ...
2020-08-12uaccess: remove segment_eqChristoph Hellwig1-2/+1
segment_eq is only used to implement uaccess_kernel. Just open code uaccess_kernel in the arch uaccess headers and remove one layer of indirection. Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Acked-by: Linus Torvalds <[email protected]> Acked-by: Greentime Hu <[email protected]> Acked-by: Geert Uytterhoeven <[email protected]> Cc: Nick Hu <[email protected]> Cc: Vincent Chen <[email protected]> Cc: Paul Walmsley <[email protected]> Cc: Palmer Dabbelt <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Linus Torvalds <[email protected]>
2020-08-11Merge tag 'iommu-updates-v5.9' of ↵Linus Torvalds1-3/+0
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: - Remove of the dev->archdata.iommu (or similar) pointers from most architectures. Only Sparc is left, but this is private to Sparc as their drivers don't use the IOMMU-API. - ARM-SMMU updates from Will Deacon: - Support for SMMU-500 implementation in Marvell Armada-AP806 SoC - Support for SMMU-500 implementation in NVIDIA Tegra194 SoC - DT compatible string updates - Remove unused IOMMU_SYS_CACHE_ONLY flag - Move ARM-SMMU drivers into their own subdirectory - Intel VT-d updates from Lu Baolu: - Misc tweaks and fixes for vSVA - Report/response page request events - Cleanups - Move the Kconfig and Makefile bits for the AMD and Intel drivers into their respective subdirectory. - MT6779 IOMMU Support - Support for new chipsets in the Renesas IOMMU driver - Other misc cleanups and fixes (e.g. to improve compile test coverage) * tag 'iommu-updates-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (77 commits) iommu/amd: Move Kconfig and Makefile bits down into amd directory iommu/vt-d: Move Kconfig and Makefile bits down into intel directory iommu/arm-smmu: Move Arm SMMU drivers into their own subdirectory iommu/vt-d: Skip TE disabling on quirky gfx dedicated iommu iommu: Add gfp parameter to io_pgtable_ops->map() iommu: Mark __iommu_map_sg() as static iommu/vt-d: Rename intel-pasid.h to pasid.h iommu/vt-d: Add page response ops support iommu/vt-d: Report page request faults for guest SVA iommu/vt-d: Add a helper to get svm and sdev for pasid iommu/vt-d: Refactor device_to_iommu() helper iommu/vt-d: Disable multiple GPASID-dev bind iommu/vt-d: Warn on out-of-range invalidation address iommu/vt-d: Fix devTLB flush for vSVA iommu/vt-d: Handle non-page aligned address iommu/vt-d: Fix PASID devTLB invalidation iommu/vt-d: Remove global page support in devTLB flush iommu/vt-d: Enforce PASID devTLB field mask iommu: Make some functions static iommu/amd: Remove double zero check ...
2020-08-09Merge tag 'kvm-ppc-next-5.9-1' of ↵Paolo Bonzini3-2/+18
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into kvm-next-5.6 PPC KVM update for 5.9 - Improvements and bug-fixes for secure VM support, giving reduced startup time and memory hotplug support. - Locking fixes in nested KVM code - Increase number of guests supported by HV KVM to 4094 - Preliminary POWER10 support
2020-08-07Merge branch 'work.fdpic' of ↵Linus Torvalds1-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull fdpick coredump update from Al Viro: "Switches fdpic coredumps away from original aout dumping primitives to the same kind of regset use as regular elf coredumps do" * 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: [elf-fdpic] switch coredump to regsets [elf-fdpic] use elf_dump_thread_status() for the dumper thread as well [elf-fdpic] move allocation of elf_thread_status into elf_dump_thread_status() [elf-fdpic] coredump: don't bother with cyclic list for per-thread objects kill elf_fpxregs_t take fdpic-related parts of elf_prstatus out unexport linux/elfcore.h
2020-08-07Merge branch 'akpm' (patches from Andrew)Linus Torvalds1-1/+0
Merge misc updates from Andrew Morton: - a few MM hotfixes - kthread, tools, scripts, ntfs and ocfs2 - some of MM Subsystems affected by this patch series: kthread, tools, scripts, ntfs, ocfs2 and mm (hofixes, pagealloc, slab-generic, slab, slub, kcsan, debug, pagecache, gup, swap, shmem, memcg, pagemap, mremap, mincore, sparsemem, vmalloc, kasan, pagealloc, hugetlb and vmscan). * emailed patches from Andrew Morton <[email protected]>: (162 commits) mm: vmscan: consistent update to pgrefill mm/vmscan.c: fix typo khugepaged: khugepaged_test_exit() check mmget_still_valid() khugepaged: retract_page_tables() remember to test exit khugepaged: collapse_pte_mapped_thp() protect the pmd lock khugepaged: collapse_pte_mapped_thp() flush the right range mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible mm: thp: replace HTTP links with HTTPS ones mm/page_alloc: fix memalloc_nocma_{save/restore} APIs mm/page_alloc.c: skip setting nodemask when we are in interrupt mm/page_alloc: fallbacks at most has 3 elements mm/page_alloc: silence a KASAN false positive mm/page_alloc.c: remove unnecessary end_bitidx for [set|get]_pfnblock_flags_mask() mm/page_alloc.c: simplify pageblock bitmap access mm/page_alloc.c: extract the common part in pfn_to_bitidx() mm/page_alloc.c: replace the definition of NR_MIGRATETYPE_BITS with PB_migratetype_bits mm/shuffle: remove dynamic reconfiguration mm/memory_hotplug: document why shuffle_zone() is relevant mm/page_alloc: remove nr_free_pagecache_pages() mm: remove vm_total_pages ...
2020-08-07mm: remove unneeded includes of <asm/pgalloc.h>Mike Rapoport1-1/+0
Patch series "mm: cleanup usage of <asm/pgalloc.h>" Most architectures have very similar versions of pXd_alloc_one() and pXd_free_one() for intermediate levels of page table. These patches add generic versions of these functions in <asm-generic/pgalloc.h> and enable use of the generic functions where appropriate. In addition, functions declared and defined in <asm/pgalloc.h> headers are used mostly by core mm and early mm initialization in arch and there is no actual reason to have the <asm/pgalloc.h> included all over the place. The first patch in this series removes unneeded includes of <asm/pgalloc.h> In the end it didn't work out as neatly as I hoped and moving pXd_alloc_track() definitions to <asm-generic/pgalloc.h> would require unnecessary changes to arches that have custom page table allocations, so I've decided to move lib/ioremap.c to mm/ and make pgalloc-track.h local to mm/. This patch (of 8): In most cases <asm/pgalloc.h> header is required only for allocations of page table memory. Most of the .c files that include that header do not use symbols declared in <asm/pgalloc.h> and do not require that header. As for the other header files that used to include <asm/pgalloc.h>, it is possible to move that include into the .c file that actually uses symbols from <asm/pgalloc.h> and drop the include from the header file. The process was somewhat automated using sed -i -E '/[<"]asm\/pgalloc\.h/d' \ $(grep -L -w -f /tmp/xx \ $(git grep -E -l '[<"]asm/pgalloc\.h')) where /tmp/xx contains all the symbols defined in arch/*/include/asm/pgalloc.h. [[email protected]: fix powerpc warning] Signed-off-by: Mike Rapoport <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Reviewed-by: Pekka Enberg <[email protected]> Acked-by: Geert Uytterhoeven <[email protected]> [m68k] Cc: Abdul Haleem <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Christophe Leroy <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Max Filippov <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Satheesh Rajendran <[email protected]> Cc: Stafford Horne <[email protected]> Cc: Stephen Rothwell <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: Matthew Wilcox <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Linus Torvalds <[email protected]>
2020-08-07Merge tag 'powerpc-5.9-1' of ↵Linus Torvalds83-945/+1507
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Add support for (optionally) using queued spinlocks & rwlocks. - Support for a new faster system call ABI using the scv instruction on Power9 or later. - Drop support for the PROT_SAO mmap/mprotect flag as it will be unsupported on Power10 and future processors, leaving us with no way to implement the functionality it requests. This risks breaking userspace, though we believe it is unused in practice. - A bug fix for, and then the removal of, our custom stack expansion checking. We now allow stack expansion up to the rlimit, like other architectures. - Remove the remnants of our (previously disabled) topology update code, which tried to react to NUMA layout changes on virtualised systems, but was prone to crashes and other problems. - Add PMU support for Power10 CPUs. - A change to our signal trampoline so that we don't unbalance the link stack (branch return predictor) in the signal delivery path. - Lots of other cleanups, refactorings, smaller features and so on as usual. Thanks to: Abhishek Goel, Alastair D'Silva, Alexander A. Klimov, Alexey Kardashevskiy, Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Balamuruhan S, Bharata B Rao, Bill Wendling, Bin Meng, Cédric Le Goater, Chris Packham, Christophe Leroy, Christoph Hellwig, Daniel Axtens, Dan Williams, David Lamparter, Desnes A. Nunes do Rosario, Erhard F., Finn Thain, Frederic Barrat, Ganesh Goudar, Gautham R. Shenoy, Geoff Levand, Greg Kurz, Gustavo A. R. Silva, Hari Bathini, Harish, Imre Kaloz, Joel Stanley, Joe Perches, John Crispin, Jordan Niethe, Kajol Jain, Kamalesh Babulal, Kees Cook, Laurent Dufour, Leonardo Bras, Li RongQing, Madhavan Srinivasan, Mahesh Salgaonkar, Mark Cave-Ayland, Michal Suchanek, Milton Miller, Mimi Zohar, Murilo Opsfelder Araujo, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nayna Jain, Nicholas Piggin, Oliver O'Halloran, Palmer Dabbelt, Pedro Miraglia Franco de Carvalho, Philippe Bergheaud, Pingfan Liu, Pratik Rajesh Sampat, Qian Cai, Qinglang Miao, Randy Dunlap, Ravi Bangoria, Sachin Sant, Sam Bobroff, Sandipan Das, Santosh Sivaraj, Satheesh Rajendran, Shirisha Ganta, Sourabh Jain, Srikar Dronamraju, Stan Johnson, Stephen Rothwell, Thadeu Lima de Souza Cascardo, Thiago Jung Bauermann, Tom Lane, Vaibhav Jain, Vladis Dronov, Wei Yongjun, Wen Xiong, YueHaibing. * tag 'powerpc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (337 commits) selftests/powerpc: Fix pkey syscall redefinitions powerpc: Fix circular dependency between percpu.h and mmu.h powerpc/powernv/sriov: Fix use of uninitialised variable selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs powerpc/40x: Fix assembler warning about r0 powerpc/papr_scm: Add support for fetching nvdimm 'fuel-gauge' metric powerpc/papr_scm: Fetch nvdimm performance stats from PHYP cpuidle: pseries: Fixup exit latency for CEDE(0) cpuidle: pseries: Add function to parse extended CEDE records cpuidle: pseries: Set the latency-hint before entering CEDE selftests/powerpc: Fix online CPU selection powerpc/perf: Consolidate perf_callchain_user_[64|32]() powerpc/pseries/hotplug-cpu: Remove double free in error path powerpc/pseries/mobility: Add pr_debug() for device tree changes powerpc/pseries/mobility: Set pr_fmt() powerpc/cacheinfo: Warn if cache object chain becomes unordered powerpc/cacheinfo: Improve diagnostics about malformed cache lists powerpc/cacheinfo: Use name@unit instead of full DT path in debug messages powerpc/cacheinfo: Set pr_fmt() powerpc: fix function annotations to avoid section mismatch warnings with gcc-10 ...
2020-08-06Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds1-0/+1
Pull KVM updates from Paolo Bonzini: "s390: - implement diag318 x86: - Report last CPU for debugging - Emulate smaller MAXPHYADDR in the guest than in the host - .noinstr and tracing fixes from Thomas - nested SVM page table switching optimization and fixes Generic: - Unify shadow MMU cache data structures across architectures" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (127 commits) KVM: SVM: Fix sev_pin_memory() error handling KVM: LAPIC: Set the TDCR settable bits KVM: x86: Specify max TDP level via kvm_configure_mmu() KVM: x86/mmu: Rename max_page_level to max_huge_page_level KVM: x86: Dynamically calculate TDP level from max level and MAXPHYADDR KVM: VXM: Remove temporary WARN on expected vs. actual EPTP level mismatch KVM: x86: Pull the PGD's level from the MMU instead of recalculating it KVM: VMX: Make vmx_load_mmu_pgd() static KVM: x86/mmu: Add separate helper for shadow NPT root page role calc KVM: VMX: Drop a duplicate declaration of construct_eptp() KVM: nSVM: Correctly set the shadow NPT root level in its MMU role KVM: Using macros instead of magic values MIPS: KVM: Fix build error caused by 'kvm_run' cleanup KVM: nSVM: remove nonsensical EXITINFO1 adjustment on nested NPF KVM: x86: Add a capability for GUEST_MAXPHYADDR < HOST_MAXPHYADDR support KVM: VMX: optimize #PF injection when MAXPHYADDR does not match KVM: VMX: Add guest physical address check in EPT violation and misconfig KVM: VMX: introduce vmx_need_pf_intercept KVM: x86: update exception bitmap on CPUID changes KVM: x86: rename update_bp_intercept to update_exception_bitmap ...
2020-08-04Merge tag 'dma-mapping-5.9' of git://git.infradead.org/users/hch/dma-mappingLinus Torvalds1-5/+0
Pull dma-mapping updates from Christoph Hellwig: - make support for dma_ops optional - move more code out of line - add generic support for a dma_ops bypass mode - misc cleanups * tag 'dma-mapping-5.9' of git://git.infradead.org/users/hch/dma-mapping: dma-contiguous: cleanup dma_alloc_contiguous dma-debug: use named initializers for dir2name powerpc: use the generic dma_ops_bypass mode dma-mapping: add a dma_ops_bypass flag to struct device dma-mapping: make support for dma ops optional dma-mapping: inline the fast path dma-direct calls dma-mapping: move the remaining DMA API calls out of line
2020-08-04powerpc: Fix circular dependency between percpu.h and mmu.hMichael Ellerman1-2/+2
Recently random.h started including percpu.h (see commit f227e3ec3b5c ("random32: update the net random state on interrupt and activity")), which broke corenet64_smp_defconfig: In file included from /linux/arch/powerpc/include/asm/paca.h:18, from /linux/arch/powerpc/include/asm/percpu.h:13, from /linux/include/linux/random.h:14, from /linux/lib/uuid.c:14: /linux/arch/powerpc/include/asm/mmu.h:139:22: error: unknown type name 'next_tlbcam_idx' 139 | DECLARE_PER_CPU(int, next_tlbcam_idx); This is due to a circular header dependency: asm/mmu.h includes asm/percpu.h, which includes asm/paca.h, which includes asm/mmu.h Which means DECLARE_PER_CPU() isn't defined when mmu.h needs it. We can fix it by moving the include of paca.h below the include of asm-generic/percpu.h. This moves the include of paca.h out of the #ifdef __powerpc64__, but that is OK because paca.h is almost entirely inside #ifdef CONFIG_PPC64 anyway. It also moves the include of paca.h out of the #ifdef CONFIG_SMP, which could possibly break something, but seems to have no ill effects. Fixes: f227e3ec3b5c ("random32: update the net random state on interrupt and activity") Cc: [email protected] # v5.8 Reported-by: Stephen Rothwell <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29Merge branch 'locking/header'Peter Zijlstra1-2/+0
2020-07-29locking/atomic: Move ATOMIC_INIT into linux/types.hHerbert Xu1-2/+0
This patch moves ATOMIC_INIT from asm/atomic.h into linux/types.h. This allows users of atomic_t to use ATOMIC_INIT without having to include atomic.h as that way may lead to header loops. Signed-off-by: Herbert Xu <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Acked-by: Waiman Long <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
2020-07-29powerpc/kexec_file: Prepare elfcore header for crashing kernelHari Bathini1-0/+6
Prepare elf headers for the crashing kernel's core file using crash_prepare_elf64_headers() and pass on this info to kdump kernel by updating its command line with elfcorehdr parameter. Also, add elfcorehdr location to reserve map to avoid it from being stomped on while booting. Signed-off-by: Hari Bathini <[email protected]> Tested-by: Pingfan Liu <[email protected]> Reviewed-by: Thiago Jung Bauermann <[email protected]> [mpe: Ensure cmdline is nul terminated] Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/159602298855.575379.15819225623219909517.stgit@hbathini
2020-07-29powerpc/kexec_file: Setup backup region for kdump kernelHari Bathini2-0/+26
Though kdump kernel boots from loaded address, the first 64KB of it is copied down to real 0. So, setup a backup region and let purgatory copy the first 64KB of crashed kernel into this backup region before booting into kdump kernel. Update reserve map with backup region and crashed kernel's memory to avoid kdump kernel from accidentially using that memory. Signed-off-by: Hari Bathini <[email protected]> Reviewed-by: Thiago Jung Bauermann <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/159602294718.575379.16216507537038008623.stgit@hbathini
2020-07-29powerpc/drmem: Make LMB walk a bit more flexibleHari Bathini1-4/+5
Currently, numa & prom are the only users of drmem LMB walk code. Loading kdump with kexec_file also needs to walk the drmem LMBs to setup the usable memory ranges for kdump kernel. But there are couple of issues in using the code as is. One, walk_drmem_lmb() code is built into the .init section currently, while kexec_file needs it later. Two, there is no scope to pass data to the callback function for processing and/or erroring out on certain conditions. Fix that by, moving drmem LMB walk code out of .init section, adding scope to pass data to the callback function and bailing out when an error is encountered in the callback function. Signed-off-by: Hari Bathini <[email protected]> Tested-by: Pingfan Liu <[email protected]> Reviewed-by: Thiago Jung Bauermann <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/159602282727.575379.3979857013827701828.stgit@hbathini
2020-07-29powerpc/kexec_file: Avoid stomping memory used by special regionsHari Bathini2-2/+19
crashkernel region could have an overlap with special memory regions like OPAL, RTAS, TCE table & such. These regions are referred to as excluded memory ranges. Setup these ranges during image probe in order to avoid them while finding the buffer for different kdump segments. Override arch_kexec_locate_mem_hole() to locate a memory hole taking these ranges into account. Signed-off-by: Hari Bathini <[email protected]> Reviewed-by: Thiago Jung Bauermann <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/159602281047.575379.6636807148335160795.stgit@hbathini
2020-07-29powerpc/kexec_file: Add helper functions for getting memory rangesHari Bathini1-0/+11
In kexec case, the kernel to be loaded uses the same memory layout as the running kernel. So, passing on the DT of the running kernel would be good enough. But in case of kdump, different memory ranges are needed to manage loading the kdump kernel, booting into it and exporting the elfcore of the crashing kernel. The ranges are exclude memory ranges, usable memory ranges, reserved memory ranges and crash memory ranges. Exclude memory ranges specify the list of memory ranges to avoid while loading kdump segments. Usable memory ranges list the memory ranges that could be used for booting kdump kernel. Reserved memory ranges list the memory regions for the loading kernel's reserve map. Crash memory ranges list the memory ranges to be exported as the crashing kernel's elfcore. Add helper functions for setting up the above mentioned memory ranges. This helpers facilitate in understanding the subsequent changes better and make it easy to setup the different memory ranges listed above, as and when appropriate. Signed-off-by: Hari Bathini <[email protected]> Tested-by: Pingfan Liu <[email protected]> Reviewed-by: Thiago Jung Bauermann <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/159602279194.575379.8526552316948643550.stgit@hbathini
2020-07-29powerpc/kexec_file: Mark PPC64 specific codeHari Bathini1-0/+9
Some of the kexec_file_load code isn't PPC64 specific. Move PPC64 specific code from kexec/file_load.c to kexec/file_load_64.c. Also, rename purgatory/trampoline.S to purgatory/trampoline_64.S in the same spirit. No functional changes. Signed-off-by: Hari Bathini <[email protected]> Tested-by: Pingfan Liu <[email protected]> Reviewed-by: Laurent Dufour <[email protected]> Reviewed-by: Thiago Jung Bauermann <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/159602276920.575379.10390965946438306388.stgit@hbathini
2020-07-29powerpc/64s: Move HMI IRQ stat from percpu variable to paca.Mahesh Salgaonkar2-1/+1
With the proposed change in percpu bootmem allocator to use page mapping [1], the percpu first chunk memory area can come from vmalloc ranges. This makes the HMI (Hypervisor Maintenance Interrupt) handler crash the kernel whenever percpu variable is accessed in real mode. This patch fixes this issue by moving the HMI IRQ stat inside paca for safe access in realmode. [1] https://lore.kernel.org/linuxppc-dev/[email protected]/ Suggested-by: Aneesh Kumar K.V <[email protected]> Signed-off-by: Mahesh Salgaonkar <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/159290806973.3642154.5244613424529764050.stgit@jupiter
2020-07-29ocxl: Remove unnecessary externsAlastair D'Silva1-21/+19
Function declarations don't need externs, remove the existing ones so they are consistent with newer code Signed-off-by: Alastair D'Silva <[email protected]> Acked-by: Andrew Donnellan <[email protected]> Acked-by: Frederic Barrat <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29powerpc/ppc-opcode: Add divde and divdeu opcodesBalamuruhan S1-0/+6
Include instruction opcodes for divde and divdeu as macros. Signed-off-by: Balamuruhan S <[email protected]> Reviewed-by: Sandipan Das <[email protected]> Acked-by: Naveen N. Rao <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29Merge branches 'arm/renesas', 'arm/qcom', 'arm/mediatek', 'arm/omap', ↵Joerg Roedel1-3/+0
'arm/exynos', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next
2020-07-29powerpc/book3s64/radix: Add kernel command line option to disable radix GTSEAneesh Kumar K.V1-1/+3
This adds a kernel command line option that can be used to disable GTSE support. Disabling GTSE implies kernel will make hcalls to invalidate TLB entries. This was done so that we can do VM migration between configs that enable/disable GTSE support via hypervisor. To migrate a VM from a system that supports GTSE to a system that doesn't, we can boot the guest with radix_hcall_invalidate=on, thereby forcing the guest to use hcalls for TLB invalidates. The check for hcall availability is done in pSeries_setup_arch so that the panic message appears on the console. This should only happen on a hypervisor that doesn't force the guest to hash translation even though it can't handle the radix GTSE=0 request via CAS. With radix_hcall_invalidate=on if the hypervisor doesn't support hcall_rpt_invalidate hcall it should force the LPAR to hash translation. Signed-off-by: Aneesh Kumar K.V <[email protected]> Tested-by: Bharata B Rao <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29powerpc/hugetlb/cma: Allocate gigantic hugetlb pages using CMAAneesh Kumar K.V1-0/+7
commit: cf11e85fc08c ("mm: hugetlb: optionally allocate gigantic hugepages using cma") added support for allocating gigantic hugepages using CMA. This patch enables the same for powerpc Signed-off-by: Aneesh Kumar K.V <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29powerpc: Drop old comment about CONFIG_POWERMichael Ellerman1-1/+0
There's a comment in time.h referring to CONFIG_POWER, which doesn't exist. That confuses scripts/checkkconfigsymbols.py. Presumably the comment was referring to a CONFIG_POWER vs CONFIG_PPC, in which case for CONFIG_POWER we would #define __USE_RTC to 1. But instead we have CONFIG_PPC_BOOK3S_601, and these days we have IS_ENABLED(). So the comment is no longer relevant, drop it. Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29powerpc/32s: Fix CONFIG_BOOK3S_601 usesMichael Ellerman2-2/+2
We have two uses of CONFIG_BOOK3S_601, which doesn't exist. Fix them to use CONFIG_PPC_BOOK3S_601 which is the correct symbol. Fixes: 12c3f1fd87bf ("powerpc/32s: get rid of CPU_FTR_601 feature") Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29powerpc/64e: Drop dead BOOK3E_MMU_TLB_STATS codeMichael Ellerman1-52/+1
This code was merged 11 years ago in commit 13363ab9b9d0 ("powerpc: Add definitions used by exception handling on 64-bit Book3E") but was never able to be built because CONFIG_BOOK3E_MMU_TLB_STATS never existed. Remove it. Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29powerpc/mm: Limit resize_hpt_for_hotplug() call to hash guests onlyBharata B Rao1-6/+0
During memory hotplug and unplug, resize_hpt_for_hotplug() gets called for both hash and radix guests but it should be called only for hash guests. Though the call does nothing in the radix guest case, it is cleaner to push this call into hash specific memory hotplug routines. Reported-by: Nathan Lynch <[email protected]> Signed-off-by: Bharata B Rao <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29powerpc/pseries: Add KVM guest doorbell restrictionsNicholas Piggin2-23/+9
KVM guests have certain restrictions and performance quirks when using doorbells. This patch moves the EPAPR KVM guest test so it can be shared with PSERIES, and uses that in doorbell setup code to apply the KVM guest quirks and improves IPI performance for two cases: - PowerVM guests may now use doorbells even if they are secure. - KVM guests no longer use doorbells if XIVE is available. There is a valid complaint that "KVM guest" is not a very reasonable thing to test for, it's preferable for the hypervisor to advertise particular behaviours to the guest so they could change if the hypervisor implementation or configuration changes. However in this case we were already assuming a KVM guest worst case, so this patch is about containing those quirks. If KVM later advertises fast doorbells, we should test for that and override the quirks. Signed-off-by: Nicholas Piggin <[email protected]> Tested-by: Cédric Le Goater <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29powerpc: Inline doorbell sending functionsNicholas Piggin2-3/+63
These are only called in one place for a given platform, so inline them for performance. Signed-off-by: Nicholas Piggin <[email protected]> Tested-by: Cédric Le Goater <[email protected]> [mpe: Fix build errors related to KVM] Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-29powerpc/perf: Fix MMCRA_BHRB_DISABLE define for binutils < 2.28Athira Rajeev1-1/+2
Commit 9908c826d5ed ("powerpc/perf: Add Power10 PMU feature to DT CPU features") defines MMCRA_BHRB_DISABLE as `0x2000000000UL`. Binutils version less than 2.28 doesn't support UL suffix. arch/powerpc/kernel/cpu_setup_power.S: Assembler messages: arch/powerpc/kernel/cpu_setup_power.S:250: Error: found 'L', expected: ')' arch/powerpc/kernel/cpu_setup_power.S:250: Error: junk at end of line, first unrecognized character is `L' arch/powerpc/kernel/cpu_setup_power.S:250: Error: found 'L', expected: ')' arch/powerpc/kernel/cpu_setup_power.S:250: Error: found 'L', expected: ')' arch/powerpc/kernel/cpu_setup_power.S:250: Error: junk at end of line, first unrecognized character is `L' arch/powerpc/kernel/cpu_setup_power.S:250: Error: found 'L', expected: ')' arch/powerpc/kernel/cpu_setup_power.S:250: Error: found 'L', expected: ')' arch/powerpc/kernel/cpu_setup_power.S:250: Error: operand out of range (0x0000002000000000 is not between 0xffffffffffff8000 and 0x000000000000ffff) Fix this by wrapping it with the `_UL` macro. Fixes: 9908c826d5ed ("Add Power10 PMU feature to DT CPU features") Suggested-by: Michael Ellerman <[email protected]> Signed-off-by: Athira Rajeev <[email protected]> Reviewed-by: Madhavan Srinivasan <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-28KVM: PPC: Book3S HV: Migrate hot plugged memoryLaurent Dufour1-0/+14
When a memory slot is hot plugged to a SVM, PFNs associated with the GFNs in that slot must be migrated to the secure-PFNs, aka device-PFNs. Call kvmppc_uv_migrate_mem_slot() to accomplish this. Disable page-merge for all pages in the memory slot. Reviewed-by: Bharata B Rao <[email protected]> Signed-off-by: Ram Pai <[email protected]> [rearranged the code, and modified the commit log] Signed-off-by: Laurent Dufour <[email protected]> Signed-off-by: Paul Mackerras <[email protected]>
2020-07-27kill elf_fpxregs_tAl Viro1-2/+0
all uses are conditional upon ELF_CORE_COPY_XFPREGS, which has not been defined on any architecture since 2010 Signed-off-by: Al Viro <[email protected]>
2020-07-27powerpc/smu.h: delete duplicated wordRandy Dunlap1-1/+1
Drop the repeated word "the". Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-27powerpc/reg.h: delete duplicated wordRandy Dunlap1-1/+1
Drop the repeated word "a". Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-27powerpc/ppc_asm.h: delete duplicated wordRandy Dunlap1-1/+1
Drop the repeated word "in". Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-27powerpc/hw_breakpoint.h: delete duplicated wordRandy Dunlap1-1/+1
Drop the repeated word "the". Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-27powerpc/epapr_hcalls.h: delete duplicated wordsRandy Dunlap1-2/+2
Drop the repeated words "file" and "the". Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-27powerpc/cputime.h: delete duplicated wordRandy Dunlap1-1/+1
Drop the repeated word "use". Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-27powerpc/book3s/radix-4k.h: delete duplicated wordRandy Dunlap1-1/+1
Drop the repeated word "per". Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-27powerpc/book3s/mmu-hash.h: delete duplicated wordRandy Dunlap1-1/+1
Drop the repeated word "below". Signed-off-by: Randy Dunlap <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-27powerpc/lib: remove memcpy_flushcache redundant returnLi RongQing1-1/+1
Align it with other architectures and none of the callers has been interested its return Signed-off-by: Li RongQing <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-07-27powerpc/32s: Use dedicated segment for modules with STRICT_KERNEL_RWXChristophe Leroy1-10/+5
When STRICT_KERNEL_RWX is set, we want to set NX bit on vmalloc segments. But modules require exec. Use a dedicated segment for modules. There is not much space above kernel, and we don't waste vmalloc space to do alignment. Therefore, we take the segment before PAGE_OFFSET for modules. Signed-off-by: Christophe Leroy <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/eb8faba9148b6cf17c696ba776b4e8ee2f6313bf.1593428200.git.christophe.leroy@csgroup.eu
2020-07-27powerpc/32: Set user/kernel boundary at TASK_SIZE instead of PAGE_OFFSETChristophe Leroy1-1/+3
User space stops at TASK_SIZE. At the moment, kernel space starts at PAGE_OFFSET. In order to use space between TASK_SIZE and PAGE_OFFSET for modules, make TASK_SIZE the limit between user and kernel space. Note that fault.c already considers TASK_SIZE as the boundary between user and kernel space. Signed-off-by: Christophe Leroy <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/b38b52cd8dabbb56fbd6f9219d6f3cdccbb43b44.1593428200.git.christophe.leroy@csgroup.eu
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