LKML News v6.4-rc7

[GIT PULL] hotfixes for 6.4-rc7 (Andrew Morton) https://lkml.kernel.org/r/20230612122712.f495e24b80f88f58557ea470@linux-foundation.org Andrew sent hot fixes pull request to Linus Torvalds. The one for DAMON is also contained. [PATCH stable 5.10 0/1] Fix memleak during hotremove memory (Ma Wupeng) https://lkml.kernel.org/r/20230614061900.3296725-1-mawupeng1@huawei.com Ma found a memory leak in memory hotplugging, and providing a patch. [ANNOUNCE/CFP] CXL Microconference at LPC 2023 (Davidlohr Bueso) https://lkml.kernel.org/r/a4c2gx2tnm4ckax7qkx2trnvmqjssfytc45sb2zikuayd2marc@rpsjp4icgsvn Davidlohr announces CXL microconference has accepted for LPC this year, and inviting people in the call for participation....

June 13, 2023 · 2 min · 249 words · Me

LKML News v6.4-rc6

As of 2023-06-06, for some reason https://lore.kernel.org/linux-mm seems stopped being updated since 2023-05-31. On the day of 2023-06-06, the update has resumed. [PATCH v3 0/5] riscv: Introduce KASLR (Alexandre Ghiti) https://lkml.kernel.org/r/20230606123242.20804-1-alexghiti@rivosinc.com This patchset introduces KASLR, which allows kernel mapping randomization, for riscv. Question about oom-killer (Gou Hao) https://lore.kernel.org/linux-mm/A31B3EA06AF77F13+c7278bd0-2695-4cc0-5a56-531a06ac2389@uniontech.com/ A question about oom-killer behavior that suspected to be a kernel bug. [PATCH v3] Documentation/mm: Initial page table documentation (Linus Walleij) https://lkml.kernel.org/r/20230608125501.3960093-1-linus.walleij@linaro.org...

June 6, 2023 · 2 min · 214 words · Me

LKML News v6.4-rc5

[PATCH 00/12] mm: free retracted page table by RCU (Hugh Dickins) https://lkml.kernel.org/r/35e983f5-7ed3-b310-d949-9ae8b130cdab@google.com This patchset aims to reduce mmap_lock contention by freeing retracted page table by RCU, with preceding and succeeding patchsets. This patchset was in Google data center kernel for three years. [PATCH] mm: madvise: fix uneven accounting of psi (Charan Teja Kalla) https://lkml.kernel.org/r/1685531374-6091-1-git-send-email-quic_charante@quicinc.com For madvise(MADV_PAGEOUT) is called for folios, PSI for the folio is not always accounted. This patchset makes it be consistent by always not considering PSI for folios that are reclaimed through madvise(MADV_PAGEOUT)....

May 30, 2023 · 2 min · 248 words · Me

LKML News v6.4-rc4

[PATCH 0/9] Mitigate a vmap lock contention (Uladzislau Rezki) https://lkml.kernel.org/r/20230522110849.2921-1-urezki@gmail.com Uladzislau sent a patchset for vmap lock contention mitigation, as suggested at LSFMM+BPF. [PATCH] mm: deduct the number of pages reclaimed by madvise from workingset (Zhaoyang Huang) https://lkml.kernel.org/r/1684919574-28368-1-git-send-email-zhaoyang.huang@unisoc.com Pages reclaimed by madvise() with MADV_PAGEOUT hint doesn’t handle the workingset, hence leads to large refault distance than it should be. This patch addresses the case by making reclaim_pages() to receive mm_struct and deduct the pages from workingset....

May 23, 2023 · 2 min · 238 words · Me

LKML News v6.4-rc3

[PATCH v3 00/11] Introduce cmpxchg128() – aka. the demise of cmpxchg_double() (Peter Zijlstra) https://lkml.kernel.org/r/20230515075659.118447996@infradead.org This patchset introduces an alternative for cmpxchg_double(), namely cmpxchg128(), and replace the old usages of cmpxchg_double(). This is because Linus hates cmpxchg_double()[1]. [1] https://lore.kernel.org/all/Y2U3WdU61FvYlpUh@hirez.programming.kicks-ass.net/T/#u [PATCH 0/6] Memory Mapping (VMA) protection using PKU - set 1 (Jeff Xu) https://lkml.kernel.org/r/20230515130553.2311248-1-jeffxu@chromium.org [Invitation] Linux MM Alignment Session on Code Tagging on Wednesday (David Rientjes) https://lkml.kernel.org/r/CAE-26VDomF_pZybGjgCBJZuWusX0z3MTEJmkwtuQXx3PyrN6fw@mail.gmail.com Google is hosting Linux MM alignment session....

May 16, 2023 · 2 min · 231 words · Me