linux-dev/arch/s390/mm/init.c, branch linus/master

virtio: replace arch_has_restricted_virtio_memory_access()

2022-06-06T06:22:01Z

Instead of using arch_has_restricted_virtio_memory_access() together with CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS, replace those with platform_has() and a new platform feature PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS. Signed-off-by: Juergen Gross Reviewed-by: Oleksandr Tyshchenko Tested-by: Oleksandr Tyshchenko # Arm64 only Reviewed-by: Christoph Hellwig Acked-by: Borislav Petkov

swiotlb: make the swiotlb_init interface more useful

2022-04-18T05:21:11Z

Pass a boolean flag to indicate if swiotlb needs to be enabled based on the addressing needs, and replace the verbose argument with a set of flags, including one to force enable bounce buffering. Note that this patch removes the possibility to force xen-swiotlb use with the swiotlb=force parameter on the command line on x86 (arm and arm64 never supported that), but this interface will be restored shortly. Signed-off-by: Christoph Hellwig Reviewed-by: Konrad Rzeszutek Wilk Tested-by: Boris Ostrovsky

s390/sclp: release SCLP early buffer after kernel initialization

2021-12-16T18:58:07Z

The SCLP early buffer is used only during kernel initialization and can be freed afterwards. The only way to ensure that it is not released while being in use, is to release it in free_initmem(). Acked-by: Heiko Carstens Reviewed-by: Alexander Gordeev Signed-off-by: Alexander Egorenkov [agordeev@linux.ibm.com: added debug output] Signed-off-by: Alexander Gordeev Signed-off-by: Heiko Carstens

s390: use generic version of arch_is_kernel_initmem_freed()

2021-11-06T20:30:38Z

The generic version of arch_is_kernel_initmem_freed() now does the same as s390 version. Remove the s390 version. Link: https://lkml.kernel.org/r/b6feb5dfe611a322de482762fc2df3a9eece70c7.1633001016.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy Acked-by: Heiko Carstens Cc: Gerald Schaefer Cc: Kefeng Wang Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branch 'akpm' (patches from Andrew)

2021-09-08T19:55:35Z

Merge more updates from Andrew Morton: "147 patches, based on 7d2a07b769330c34b4deabeed939325c77a7ec2f. Subsystems affected by this patch series: mm (memory-hotplug, rmap, ioremap, highmem, cleanups, secretmem, kfence, damon, and vmscan), alpha, percpu, procfs, misc, core-kernel, MAINTAINERS, lib, checkpatch, epoll, init, nilfs2, coredump, fork, pids, criu, kconfig, selftests, ipc, and scripts" * emailed patches from Andrew Morton : (94 commits) scripts: check_extable: fix typo in user error message mm/workingset: correct kernel-doc notations ipc: replace costly bailout check in sysvipc_find_ipc() selftests/memfd: remove unused variable Kconfig.debug: drop selecting non-existing HARDLOCKUP_DETECTOR_ARCH configs: remove the obsolete CONFIG_INPUT_POLLDEV prctl: allow to setup brk for et_dyn executables pid: cleanup the stale comment mentioning pidmap_init(). kernel/fork.c: unexport get_{mm,task}_exe_file coredump: fix memleak in dump_vma_snapshot() fs/coredump.c: log if a core dump is aborted due to changed file permissions nilfs2: use refcount_dec_and_lock() to fix potential UAF nilfs2: fix memory leak in nilfs_sysfs_delete_snapshot_group nilfs2: fix memory leak in nilfs_sysfs_create_snapshot_group nilfs2: fix memory leak in nilfs_sysfs_delete_##name##_group nilfs2: fix memory leak in nilfs_sysfs_create_##name##_group nilfs2: fix NULL pointer in nilfs_##name##_attr_release nilfs2: fix memory leak in nilfs_sysfs_create_device_group trap: cleanup trap_init() init: move usermodehelper_enable() to populate_rootfs() ...

mm/memory_hotplug: remove nid parameter from arch_remove_memory()

2021-09-08T18:50:23Z

The parameter is unused, let's remove it. Link: https://lkml.kernel.org/r/20210712124052.26491-3-david@redhat.com Signed-off-by: David Hildenbrand Acked-by: Catalin Marinas Acked-by: Michael Ellerman [powerpc] Acked-by: Heiko Carstens [s390] Reviewed-by: Pankaj Gupta Reviewed-by: Oscar Salvador Cc: Catalin Marinas Cc: Will Deacon Cc: Michael Ellerman Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Christian Borntraeger Cc: Yoshinori Sato Cc: Rich Felker Cc: Dave Hansen Cc: Andy Lutomirski Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Anshuman Khandual Cc: Ard Biesheuvel Cc: Mike Rapoport Cc: Nicholas Piggin Cc: Pavel Tatashin Cc: Baoquan He Cc: Laurent Dufour Cc: Sergei Trofimovich Cc: Kefeng Wang Cc: Michel Lespinasse Cc: Christophe Leroy Cc: "Aneesh Kumar K.V" Cc: Thiago Jung Bauermann Cc: Joe Perches Cc: Pierre Morel Cc: Jia He Cc: Anton Blanchard Cc: Dan Williams Cc: Dave Jiang Cc: Jason Wang Cc: Len Brown Cc: "Michael S. Tsirkin" Cc: Michal Hocko Cc: Nathan Lynch Cc: Pankaj Gupta Cc: "Rafael J. Wysocki" Cc: "Rafael J. Wysocki" Cc: Scott Cheloha Cc: Vishal Verma Cc: Vitaly Kuznetsov Cc: Vlastimil Babka Cc: Wei Yang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branch 'stable/for-linus-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb

2021-09-03T17:34:44Z

Pull swiotlb updates from Konrad Rzeszutek Wilk: "A new feature called restricted DMA pools. It allows SWIOTLB to utilize per-device (or per-platform) allocated memory pools instead of using the global one. The first big user of this is ARM Confidential Computing where the memory for DMA operations can be set per platform" * 'stable/for-linus-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb: (23 commits) swiotlb: use depends on for DMA_RESTRICTED_POOL of: restricted dma: Don't fail device probe on rmem init failure of: Move of_dma_set_restricted_buffer() into device.c powerpc/svm: Don't issue ultracalls if !mem_encrypt_active() s390/pv: fix the forcing of the swiotlb swiotlb: Free tbl memory in swiotlb_exit() swiotlb: Emit diagnostic in swiotlb_exit() swiotlb: Convert io_default_tlb_mem to static allocation of: Return success from of_dma_set_restricted_buffer() when !OF_ADDRESS swiotlb: add overflow checks to swiotlb_bounce swiotlb: fix implicit debugfs declarations of: Add plumbing for restricted DMA pool dt-bindings: of: Add restricted DMA pool swiotlb: Add restricted DMA pool initialization swiotlb: Add restricted DMA alloc/free support swiotlb: Refactor swiotlb_tbl_unmap_single swiotlb: Move alloc_size to swiotlb_find_slots swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing swiotlb: Update is_swiotlb_active to add a struct device argument swiotlb: Update is_swiotlb_buffer to add a struct device argument ...

s390: add support for KFENCE

2021-07-30T15:09:02Z

Signed-off-by: Sven Schnelle [hca@linux.ibm.com: simplify/rework code] Link: https://lore.kernel.org/r/20210728190254.3921642-4-hca@linux.ibm.com Signed-off-by: Heiko Carstens

s390/pv: fix the forcing of the swiotlb

2021-07-24T00:23:05Z

Since commit 903cd0f315fe ("swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing") if code sets swiotlb_force it needs to do so before the swiotlb is initialised. Otherwise io_tlb_default_mem->force_bounce will not get set to true, and devices that use (the default) swiotlb will not bounce despite switolb_force having the value of SWIOTLB_FORCE. Let us restore swiotlb functionality for PV by fulfilling this new requirement. This change addresses what turned out to be a fragility in commit 64e1f0c531d1 ("s390/mm: force swiotlb for protected virtualization"), which ain't exactly broken in its original context, but could give us some more headache if people backport the broken change and forget this fix. Signed-off-by: Halil Pasic Tested-by: Christian Borntraeger Reviewed-by: Christian Borntraeger Fixes: 903cd0f315fe ("swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing") Fixes: 64e1f0c531d1 ("s390/mm: force swiotlb for protected virtualization") Cc: stable@vger.kernel.org #5.3+ Signed-off-by: Konrad Rzeszutek Wilk

mm: move mem_init_print_info() into mm_init()

2021-04-30T18:20:42Z

mem_init_print_info() is called in mem_init() on each architecture, and pass NULL argument, so using void argument and move it into mm_init(). Link: https://lkml.kernel.org/r/20210317015210.33641-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang Acked-by: Dave Hansen [x86] Reviewed-by: Christophe Leroy [powerpc] Acked-by: David Hildenbrand Tested-by: Anatoly Pugachev [sparc64] Acked-by: Russell King [arm] Acked-by: Mike Rapoport Cc: Catalin Marinas Cc: Richard Henderson Cc: Guo Ren Cc: Yoshinori Sato Cc: Huacai Chen Cc: Jonas Bonn Cc: Palmer Dabbelt Cc: Heiko Carstens Cc: "David S. Miller" Cc: "Peter Zijlstra" Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds