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Fri, 29 Aug 2025 20:54:01 -0700 (PDT) Received: from dw-tp ([171.76.86.139]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-327da90ee17sm4279879a91.24.2025.08.29.20.53.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Aug 2025 20:54:00 -0700 (PDT) From: "Ritesh Harjani (IBM)" To: linuxppc-dev@lists.ozlabs.org Cc: "Ritesh Harjani (IBM)" Subject: [PATCH 0/8] powerpc/book3s64: Hash / SLB fixes & improvements Date: Sat, 30 Aug 2025 09:21:39 +0530 Message-ID: X-Mailer: git-send-email 2.50.1 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hello all, While working over SLB related multi-hit issue we identified few more Hash / SLB related issues, which this patch series fixes. Patches 1-4 are various fixes related to SLB / HASH MMU. Patches 5-8 are improvements in ptdump, slb preload and the last patch adds slb user and kernel vmstat counters. Patch-1 was posted earlier as a standalone fix here [1]. It has no changes in this version. But since patch-6 is dependent on this, hence we clubbed all Hash / SLB related patches into a common series. Other than patch-1 (which was posted earlier), the rest of the patches are mostly only tested in Qemu tcg for powernv and pseries. I will be testing these on the real HW too before the next revision. But meanwhile it will be good to get any reviews/feedback. [1]: https://lore.kernel.org/linuxppc-dev/20250814092532.116762-1-donettom@linux.ibm.com/ Donet Tom (1): powerpc/mm: Fix SLB multihit issue during SLB preload Ritesh Harjani (IBM) (7): book3s64/hash: Restrict stress_hpt_struct memblock region to within RMA limit book3s64/hash: Fix phys_addr_t printf format in htab_initialize() powerpc/ptdump/64: Fix kernel_hash_pagetable dump for ISA v3.00 HPTE format powerpc/ptdump: Dump PXX level info for kernel_page_tables powerpc/book3s64/slb: Make preload_add return type as void powerpc/book3s64/slb: Add no_slb_preload early cmdline param powerpc/book3s64/slb: Add slb faults to vmstat .../admin-guide/kernel-parameters.txt | 3 + arch/powerpc/include/asm/book3s/64/mmu-hash.h | 1 - arch/powerpc/kernel/process.c | 5 - arch/powerpc/mm/book3s64/hash_utils.c | 15 ++- arch/powerpc/mm/book3s64/internal.h | 9 +- arch/powerpc/mm/book3s64/mmu_context.c | 2 - arch/powerpc/mm/book3s64/slb.c | 112 ++++-------------- arch/powerpc/mm/ptdump/8xx.c | 5 + arch/powerpc/mm/ptdump/book3s64.c | 5 + arch/powerpc/mm/ptdump/hashpagetable.c | 6 + arch/powerpc/mm/ptdump/ptdump.c | 1 + arch/powerpc/mm/ptdump/ptdump.h | 1 + arch/powerpc/mm/ptdump/shared.c | 5 + include/linux/vm_event_item.h | 4 + mm/vmstat.c | 5 + 15 files changed, 73 insertions(+), 106 deletions(-) -- 2.50.1