On Fri, Sep 12, 2025 at 12:03:27PM +0300, Leon Romanovsky wrote: > On Fri, Sep 12, 2025 at 12:25:38AM +0200, Marek Szyprowski wrote: > > > > > > This series does the core code and modern flows. A followup series > > > will give the same treatment to the legacy dma_ops implementation. > > > > Applied patches 1-13 into dma-mapping-for-next branch. Let's check if it > > works fine in linux-next. > > Thanks a lot.
Just fyi, when dma debug is enabled, we're seeing this new warning below. I have not had a chance to look into it yet, so I'm just reporting the observation. DMA-API: nvme 0006:01:00.0: cacheline tracking EEXIST, overlapping mappings aren't supported WARNING: kernel/dma/debug.c:598 at add_dma_entry+0x26c/0x328, CPU#1: (udev-worker)/773 Modules linked in: acpi_power_meter(E) loop(E) efivarfs(E) autofs4(E) CPU: 1 UID: 0 PID: 773 Comm: (udev-worker) Tainted: G E N 6.17.0-rc6-next-20250918-debug #6 PREEMPT(none) Tainted: [E]=UNSIGNED_MODULE, [N]=TEST pstate: 63400009 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : add_dma_entry+0x26c/0x328 lr : add_dma_entry+0x26c/0x328 sp : ffff80009fe0f460 x29: ffff80009fe0f470 x28: 0000000000000001 x27: 0000000000000001 x26: ffff8000835d7f38 x25: ffff8000835d7000 x24: ffff8000835d7e60 x23: 0000000000000000 x22: 0000000006e2cc00 x21: 0000000000000000 x20: ffff800082e8f218 x19: ffff0000a908ff80 x18: 00000000ffffffff x17: ffff8000801972a0 x16: ffff800080197054 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000004 x12: 0000000000020006 x11: 0000000030e4ef9f x10: ffff800083443358 x9 : ffff80008019499c x8 : 00000000fffeffff x7 : ffff800083443358 x6 : 0000000000000000 x5 : 00000000000bfff4 x4 : 0000000000000000 x3 : ffff0000bb005ac0 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000bb005ac0 Call trace: add_dma_entry+0x26c/0x328 (P) debug_dma_map_phys+0xc4/0xf0 dma_map_phys+0xe0/0x410 dma_map_page_attrs+0x94/0xf8 blk_dma_map_direct.isra.0+0x64/0xb8 blk_rq_dma_map_iter_next+0x6c/0xc8 nvme_prep_rq+0x894/0xa98 nvme_queue_rqs+0xb0/0x1a0 blk_mq_dispatch_queue_requests+0x268/0x3b8 blk_mq_flush_plug_list+0x90/0x188 __blk_flush_plug+0x104/0x170 blk_finish_plug+0x38/0x50 read_pages+0x1a4/0x3b8 page_cache_ra_unbounded+0x1a0/0x400 force_page_cache_ra+0xa8/0xd8 page_cache_sync_ra+0xa0/0x3f8 filemap_get_pages+0x104/0x950 filemap_read+0xf4/0x498 blkdev_read_iter+0x88/0x180 vfs_read+0x214/0x310 ksys_read+0x70/0x110 __arm64_sys_read+0x20/0x30 invoke_syscall+0x4c/0x118 el0_svc_common.constprop.0+0xc4/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x1a0/0x340 el0t_64_sync_handler+0x98/0xe0 el0t_64_sync+0x17c/0x180 ---[ end trace 0000000000000000 ]---
