kernel/git/stable/linux.git/drivers/misc/sgi-gru, branch master

misc: sgi-gru: Remove SGI GRU driver

2026-08-06T09:14:24+00:00

Due to security concerns, remove the SGI GRU driver, which cannot be used on anything newer than the long time unsupported UV2 platform. Signed-off-by: Dimitri Sivanich Acked-by: Muhammad Usama Anjum Acked-By: Robin Holt Acked-by: Steve Wahl Link: https://patch.msgid.link/amyzGw1-MVLpNH-d@hpe.com Signed-off-by: Greg Kroah-Hartman

misc: sgi-gru: inline the user CBR status update

2026-07-31T12:15:54+00:00

The process-context fault path always has a valid user CBR pointer. Inline the one-use status helper and remove its obsolete NULL check. No functional change. Signed-off-by: Muhammad Usama Anjum Link: https://patch.msgid.link/20260730111316.3672672-4-usama.anjum@arm.com Signed-off-by: Greg Kroah-Hartman

misc: sgi-gru: remove obsolete atomic fault-handling state

2026-07-31T12:15:54+00:00

After interrupt faults are sent directly to user polling mode, only the process-context call path remains. Remove the atomic flag passed through the fault-handling interfaces and the related dead code. No functional change. Signed-off-by: Muhammad Usama Anjum Link: https://patch.msgid.link/20260730111316.3672672-3-usama.anjum@arm.com Signed-off-by: Greg Kroah-Hartman

misc: sgi-gru: remove interrupt-context page-table walks

2026-07-31T12:15:54+00:00

The GRU TLB miss handler walks a process's page tables without holding page-table locks or a reference to the mapped page. It also uses a kernel page-table accessor on user page tables and supports only PMD-level large mappings on x86-64. Remove the direct walker. Send interrupt faults directly to user polling mode so the existing call-OS fallback retries them in process context. Remove the mmap-lock failure statistic that can no longer be incremented. Fixes: 142586409c8b ("GRU Driver: page faults & exceptions") Signed-off-by: Muhammad Usama Anjum Link: https://patch.msgid.link/20260730111316.3672672-2-usama.anjum@arm.com Signed-off-by: Greg Kroah-Hartman

misc: sgi-gru: fill execution status in exception details

2026-07-17T13:50:28+00:00

gru_retry_exception() tests cbrexecstatus after asking gru_get_cb_exception_detail() to fill the detail structure. The helper leaves that field uninitialized, so retry decisions depend on stale stack data. Populate the address, CBR state, and execution status alongside the other exception fields, matching the user exception-detail path. Signed-off-by: Yousef Alhouseen Link: https://patch.msgid.link/20260630104941.53862-1-alhouseenyousef@gmail.com Signed-off-by: Greg Kroah-Hartman

mm: rename zap_vma_ptes() to zap_special_vma_range()

2026-04-05T20:53:15+00:00

zap_vma_ptes() is the only zapping function we export to modules. It's essentially a wrapper around zap_vma_range(), however, with some safety checks: * That the passed range fits fully into the VMA * That it's only used for VM_PFNMAP We will add support for VM_MIXEDMAP next, so use the more-generic term "special vma", although "special" is a bit overloaded. Maybe we'll later just support any VM_SPECIAL flag. While at it, improve the kerneldoc. Link: https://lkml.kernel.org/r/20260227200848.114019-16-david@kernel.org Signed-off-by: David Hildenbrand (Arm) Acked-by: Leon Romanovsky [drivers/infiniband] Reviewed-by: Lorenzo Stoakes (Oracle) Cc: Alexander Gordeev Cc: Alexei Starovoitov Cc: Alice Ryhl Cc: Andrii Nakryiko Cc: Andy Lutomirski Cc: Arnaldo Carvalho de Melo Cc: Arnd Bergmann Cc: Arve Cc: "Borislav Petkov (AMD)" Cc: Carlos Llamas Cc: Christian Borntraeger Cc: Christian Brauner Cc: Claudio Imbrenda Cc: Daniel Borkman Cc: Dave Airlie Cc: David Ahern Cc: David Rientjes Cc: David S. Miller Cc: Dimitri Sivanich Cc: Eric Dumazet Cc: Gerald Schaefer Cc: Greg Kroah-Hartman Cc: Hartley Sweeten Cc: Heiko Carstens Cc: Ian Abbott Cc: Ingo Molnar Cc: Jakub Kacinski Cc: Jani Nikula Cc: Jann Horn Cc: Janosch Frank Cc: Jarkko Sakkinen Cc: Jason Gunthorpe Cc: Jonas Lahtinen Cc: Liam Howlett Cc: Madhavan Srinivasan Cc: Matthew Wilcox (Oracle) Cc: Michael Ellerman Cc: Michal Hocko Cc: Miguel Ojeda Cc: Mike Rapoport Cc: Namhyung kim Cc: Neal Cardwell Cc: Paolo Abeni Cc: Pedro Falcato Cc: Peter Zijlstra Cc: Rodrigo Vivi Cc: Shakeel Butt Cc: Suren Baghdasaryan Cc: Todd Kjos Cc: Tvrtko Ursulin Cc: Vasily Gorbik Cc: Vincenzo Frascino Signed-off-by: Andrew Morton

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

misc: sgi-gru: Don't disable preemption in GRU driver

2024-10-09T19:47:01+00:00

Disabling preemption in the GRU driver is unnecessary, and clashes with sleeping locks in several code paths. Remove preempt_disable and preempt_enable from the GRU driver. Signed-off-by: Dimitri Sivanich Signed-off-by: Linus Torvalds

mm/treewide: replace pmd_large() with pmd_leaf()

2024-03-06T21:04:19+00:00

pmd_large() is always defined as pmd_leaf(). Merge their usages. Chose pmd_leaf() because pmd_leaf() is a global API, while pmd_large() is not. Link: https://lkml.kernel.org/r/20240305043750.93762-8-peterx@redhat.com Signed-off-by: Peter Xu Reviewed-by: Jason Gunthorpe Reviewed-by: Mike Rapoport (IBM) Cc: Alexander Potapenko Cc: Andrey Konovalov Cc: Andrey Ryabinin Cc: "Aneesh Kumar K.V" Cc: Borislav Petkov Cc: Christophe Leroy Cc: Dave Hansen Cc: Dmitry Vyukov Cc: Ingo Molnar Cc: Kirill A. Shutemov Cc: Michael Ellerman Cc: Muchun Song Cc: "Naveen N. Rao" Cc: Nicholas Piggin Cc: Thomas Gleixner Cc: Vincenzo Frascino Cc: Yang Shi Signed-off-by: Andrew Morton