dri-devel March 2022

dri-devel@lists.freedesktop.org

370 participants
780 discussions

[PATCH v2] dt-bindings: display: mediatek: mutex: remove power-domain from requird
by jason-jh.lin 31 Mar '22

31 Mar '22

There is no power control in mutex driver, so power-domain is not the required property. Fixes: 4ed545e7d100 ("dt-bindings: display: mediatek: disp: split each block to individual yaml") Signed-off-by: jason-jh.lin <jason-jh.lin(a)mediatek.com> --- Change in v2: 1. remove Change-Id 2. add fixes tag --- .../devicetree/bindings/display/mediatek/mediatek,mutex.yaml | 1 - 1 file changed, 1 deletion(-) diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,mutex.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,mutex.yaml index 00e6a1041a9b..411d8a8153e2 100644 --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,mutex.yaml +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,mutex.yaml @@ -64,7 +64,6 @@ required: - compatible - reg - interrupts - - power-domains - clocks additionalProperties: false -- 2.18.0

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[PATCH] dt-bindings: display: mediatek: mutex: remove power-domain from requird
by jason-jh.lin 31 Mar '22

31 Mar '22

There is no power control in mutex driver, so power-domain is not the required property. Signed-off-by: jason-jh.lin <jason-jh.lin(a)mediatek.com> Change-Id: I5449579647741670ef9cac7b13ac5f2c952a9d3e --- .../devicetree/bindings/display/mediatek/mediatek,mutex.yaml | 1 - 1 file changed, 1 deletion(-) diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,mutex.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,mutex.yaml index 00e6a1041a9b..411d8a8153e2 100644 --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,mutex.yaml +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,mutex.yaml @@ -64,7 +64,6 @@ required: - compatible - reg - interrupts - - power-domains - clocks additionalProperties: false -- 2.18.0

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drm-tip compile break
by Dixit, Ashutosh 31 Mar '22

31 Mar '22

Is anyone looking into fixing this: drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c: In function ‘amdgpu_gtt_mgr_recover’: drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c:200:31: error: ‘struct ttm_range_mgr_node’ has no member named ‘tbo’ amdgpu_ttm_recover_gart(node->tbo); ^~ make[4]: *** [scripts/Makefile.build:288: drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.o] Error 1 Thanks.

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Re: [PATCH v2 1/3] mm: add vm_normal_lru_pages for LRU handled pages only
by David Hildenbrand 31 Mar '22

31 Mar '22

On 31.03.22 10:53, Christoph Hellwig wrote: >> - page = vm_normal_page(vma, addr, pte); >> + page = vm_normal_lru_page(vma, addr, pte); > > Why can't this deal with ZONE_DEVICE pages? It certainly has > nothing do with a LRU I think. In fact being able to have > stats that count say the number of device pages here would > probably be useful at some point. > > In general I find the vm_normal_lru_page vs vm_normal_page > API highly confusing. An explicit check for zone device pages > in the dozen or so spots that care has a much better documentation > value, especially if accompanied by comments where it isn't entirely > obvious. What's your thought on FOLL_LRU? -- Thanks, David / dhildenb

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[PATCH] fbdev: defio: fix the pagelist corruption
by Chuansheng Liu 31 Mar '22

31 Mar '22

Easily hit the below list corruption: == list_add corruption. prev->next should be next (ffffffffc0ceb090), but was ffffec604507edc8. (prev=ffffec604507edc8). WARNING: CPU: 65 PID: 3959 at lib/list_debug.c:26 __list_add_valid+0x53/0x80 CPU: 65 PID: 3959 Comm: fbdev Tainted: G U RIP: 0010:__list_add_valid+0x53/0x80 Call Trace: <TASK> fb_deferred_io_mkwrite+0xea/0x150 do_page_mkwrite+0x57/0xc0 do_wp_page+0x278/0x2f0 __handle_mm_fault+0xdc2/0x1590 handle_mm_fault+0xdd/0x2c0 do_user_addr_fault+0x1d3/0x650 exc_page_fault+0x77/0x180 ? asm_exc_page_fault+0x8/0x30 asm_exc_page_fault+0x1e/0x30 RIP: 0033:0x7fd98fc8fad1 == Figure out the race happens when one process is adding &page->lru into the pagelist tail in fb_deferred_io_mkwrite(), another process is re-initializing the same &page->lru in fb_deferred_io_fault(), which is not protected by the lock. This fix is to init all the page lists one time during initialization, it not only fixes the list corruption, but also avoids INIT_LIST_HEAD() redundantly. Fixes: 105a940416fc ("fbdev/defio: Early-out if page is already enlisted") Cc: Thomas Zimmermann <tzimmermann(a)suse.de> Signed-off-by: Chuansheng Liu <chuansheng.liu(a)intel.com> --- drivers/video/fbdev/core/fb_defio.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/video/fbdev/core/fb_defio.c b/drivers/video/fbdev/core/fb_defio.c index 98b0f23bf5e2..eafb66ca4f28 100644 --- a/drivers/video/fbdev/core/fb_defio.c +++ b/drivers/video/fbdev/core/fb_defio.c @@ -59,7 +59,6 @@ static vm_fault_t fb_deferred_io_fault(struct vm_fault *vmf) printk(KERN_ERR "no mapping available\n"); BUG_ON(!page->mapping); - INIT_LIST_HEAD(&page->lru); page->index = vmf->pgoff; vmf->page = page; @@ -220,6 +219,8 @@ static void fb_deferred_io_work(struct work_struct *work) void fb_deferred_io_init(struct fb_info *info) { struct fb_deferred_io *fbdefio = info->fbdefio; + struct page *page; + int i; BUG_ON(!fbdefio); mutex_init(&fbdefio->lock); @@ -227,6 +228,12 @@ void fb_deferred_io_init(struct fb_info *info) INIT_LIST_HEAD(&fbdefio->pagelist); if (fbdefio->delay == 0) /* set a default of 1 s */ fbdefio->delay = HZ; + + /* initialize all the page lists one time */ + for (i = 0; i < info->fix.smem_len; i += PAGE_SIZE) { + page = fb_deferred_io_page(info, i); + INIT_LIST_HEAD(&page->lru); + } } EXPORT_SYMBOL_GPL(fb_deferred_io_init); -- 2.25.0.rc2

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Re: [PATCH v7 1/3] i915/gvt: Separate the MMIO tracking table from GVT-g
by Zhi Wang 31 Mar '22

31 Mar '22

Thanks. Let me fix that. :) On 3/31/22 04:33, Christoph Hellwig wrote: > On Thu, Mar 31, 2022 at 08:04:04AM +0000, Wang, Zhi A wrote: >> Hi Chris: >> >> Thanks for the testing. Can you attach the dmesg? I tested mostly on my skylake desktop with some 3D workload. > Sure, I should have done that from the beginning: > > [ 25.354587] vfio_mdev 6814f392-50ac-4236-ae3d-26d472fd8aae: Adding to iommu group 0 > [ 25.583015] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. > [ 26.429492] kvm [2555]: vcpu0, guest rIP: 0xffffffff81003e6e disabled perfctr wrmsr: 0xc2 data 0xffff > [ 30.206202] BUG: kernel NULL pointer dereference, address: 0000000000000000 > [ 30.206206] #PF: supervisor instruction fetch in kernel mode > [ 30.206208] #PF: error_code(0x0010) - not-present page > [ 30.206209] PGD 0 P4D 0 > [ 30.206211] Oops: 0010 [#1] PREEMPT SMP PTI > [ 30.206214] CPU: 6 PID: 2565 Comm: qemu-system-x86 Tainted: G E 5.17.0+ #1292 > [ 30.206216] Hardware name: LENOVO 20KH006JGE/20KH006JGE, BIOS N23ET62W (1.37 ) 02/19/2019 > [ 30.206217] RIP: 0010:0x0 > [ 30.206223] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. > [ 30.206224] RSP: 0018:ffffa775c3fb3e18 EFLAGS: 00010286 > [ 30.206226] RAX: 0000000000000000 RBX: ffff90a808bc0000 RCX: 0000000000000004 > [ 30.206227] RDX: ffffa775c3fb3e80 RSI: 0000000000042300 RDI: ffffa775c40ad000 > [ 30.206228] RBP: ffffa775c40ad000 R08: 0000000000000001 R09: 0000000000021180 > [ 30.206230] R10: ffffa775c3fb3e80 R11: ffffa775c3fb3e80 R12: 0000000000000004 > [ 30.206231] R13: 00000000fd042300 R14: 0000000000042300 R15: ffffa775c40ad008 > [ 30.206232] FS: 00007fdd9cbfc700(0000) GS:ffff90ab92780000(0000) knlGS:0000000000000000 > [ 30.206233] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 30.206235] CR2: ffffffffffffffd6 CR3: 00000001c117c002 CR4: 00000000003726e0 > [ 30.206236] Call Trace: > [ 30.206238] <TASK> > [ 30.206239] intel_vgpu_emulate_mmio_read+0xe9/0x390 > [ 30.206247] intel_vgpu_rw.isra.0+0x1a7/0x1e0 > [ 30.206249] intel_vgpu_read+0x15c/0x200 > [ 30.206252] vfs_read+0x9b/0x190 > [ 30.206257] __x64_sys_pread64+0x8d/0xc0 > [ 30.206259] do_syscall_64+0x3b/0x90 > [ 30.206263] entry_SYSCALL_64_after_hwframe+0x44/0xae > [ 30.206266] RIP: 0033:0x7fddb17e41a7 > [ 30.206268] Code: 08 89 3c 24 48 89 4c 24 18 e8 f5 7b f9 ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 11 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 25 7c f9 ff 48 8b > [ 30.206270] RSP: 002b:00007fdd9cbfb2f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000011 > [ 30.206272] RAX: ffffffffffffffda RBX: 000055ee30d20ed8 RCX: 00007fddb17e41a7 > [ 30.206273] RDX: 0000000000000004 RSI: 00007fdd9cbfb338 RDI: 000000000000001b > [ 30.206274] RBP: 0000000000000004 R08: 0000000000000000 R09: 00000000ffffffff > [ 30.206275] R10: 0000000000042300 R11: 0000000000000293 R12: 0000000000042300 > [ 30.206276] R13: 000055ee30d20df0 R14: 0000000000000004 R15: 0000000000042300 > [ 30.206278] </TASK> > [ 30.206279] Modules linked in: cmac(E) ctr(E) ccm(E) rfcomm(E) sd_mod(E) sg(E) uvcvideo(E) videobuf2_vmalloc(E) videobuf2_memops(E) videobuf2_v4l2(E) videobuf2_common(E) videodev(E) mc(E) btusb(E) btrtl(E) btbcm(E) btintel(E) uas(E) usb_storage(E) scsi_mod(E) scsi_common(E) bnep(E) snd_hda_codec_hdmi(E) wmi_bmof(E) intel_wmi_thunderbolt(E) joydev(E) bluetooth(E) intel_rapl_msr(E) crc16(E) x86_pkg_temp_thermal(E) jitterentropy_rng(E) intel_powerclamp(E) sha512_generic(E) drbg(E) coretemp(E) ansi_cprng(E) crc32_pclmul(E) ecdh_generic(E) ghash_clmulni_intel(E) ecc(E) aesni_intel(E) libaes(E) crypto_simd(E) iwlmvm(E) snd_soc_skl(E) cryptd(E) snd_soc_hdac_hda(E) mac80211(E) snd_ctl_led(E) snd_hda_ext_core(E) snd_hda_codec_realtek(E) libarc4(E) snd_soc_core(E) snd_hda_codec_generic(E) snd_soc_acpi_intel_match(E) kvm_intel(E) snd_soc_acpi(E) snd_soc_sst_ipc(E) iwlwifi(E) snd_soc_sst_dsp(E) intel_cstate(E) intel_uncore(E) snd_hda_intel(E) serio_raw(E) snd_intel_dspcfg(E) pcspkr(E) > [ 30.206314] snd_hda_codec(E) efi_pstore(E) snd_hwdep(E) tpm_crb(E) processor_thermal_device_pci_legacy(E) snd_hda_core(E) intel_soc_dts_iosf(E) iTCO_wdt(E) iTCO_vendor_support(E) cfg80211(E) processor_thermal_device(E) snd_pcm(E) tpm_tis(E) processor_thermal_rfim(E) thinkpad_acpi(E) watchdog(E) processor_thermal_mbox(E) tpm_tis_core(E) ucsi_acpi(E) nvram(E) mei_me(E) snd_timer(E) processor_thermal_rapl(E) ledtrig_audio(E) intel_pch_thermal(E) tpm(E) intel_rapl_common(E) mei(E) platform_profile(E) typec_ucsi(E) typec(E) rng_core(E) wmi(E) snd(E) battery(E) ac(E) soundcore(E) int3403_thermal(E) rfkill(E) int340x_thermal_zone(E) int3400_thermal(E) evdev(E) acpi_pad(E) acpi_thermal_rel(E) parport_pc(E) ppdev(E) lp(E) parport(E) efivarfs(E) ip_tables(E) x_tables(E) autofs4(E) i2c_designware_platform(E) i2c_designware_core(E) nvme(E) nvme_core(E) t10_pi(E) xhci_pci(E) e1000e(E) crc32c_intel(E) crc64_rocksoft(E) psmouse(E) xhci_hcd(E) ptp(E) i2c_i801(E) crc64(E) pps_core(E) thunderbolt(E) > [ 30.206347] i2c_smbus(E) crc_t10dif(E) usbcore(E) crct10dif_generic(E) intel_lpss_pci(E) crct10dif_pclmul(E) intel_lpss(E) crct10dif_common(E) idma64(E) mfd_core(E) usb_common(E) > [ 30.206355] CR2: 0000000000000000 > [ 30.206356] ---[ end trace 0000000000000000 ]--- > [ 30.348825] RIP: 0010:0x0 > [ 30.348839] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. > [ 30.348840] RSP: 0018:ffffa775c3fb3e18 EFLAGS: 00010286 > [ 30.348842] RAX: 0000000000000000 RBX: ffff90a808bc0000 RCX: 0000000000000004 > [ 30.348844] RDX: ffffa775c3fb3e80 RSI: 0000000000042300 RDI: ffffa775c40ad000 > [ 30.348845] RBP: ffffa775c40ad000 R08: 0000000000000001 R09: 0000000000021180 > [ 30.348846] R10: ffffa775c3fb3e80 R11: ffffa775c3fb3e80 R12: 0000000000000004 > [ 30.348847] R13: 00000000fd042300 R14: 0000000000042300 R15: ffffa775c40ad008 > [ 30.348849] FS: 00007fdd9cbfc700(0000) GS:ffff90ab92780000(0000) knlGS:0000000000000000 > [ 30.348850] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 30.348851] CR2: ffffffffffffffd6 CR3: 00000001c117c002 CR4: 00000000003726e0

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[PATCH v3 0/4] drm/atomic: Atomic Private State debugging
by Maxime Ripard 31 Mar '22

31 Mar '22

Hi, This series adds an atomic_print_state hook for drm_private_obj to ease the debugging of driver-specific sub-classes, and adds one for vc4. It also changes the call site of drm_atomic_print_new_state to make it more consistent. Let me know what you think, Maxime Changes from v2: - Reworded the commit message of the first patch - Printed the state before running atomic_check Changes from v1: - Added Daniel tags - Added drm_private_state documentation - Fixed unused variable warning - Removed the drm_atomic_nonblocking_commit() logging Maxime Ripard (4): drm/atomic: Print the state every non-blocking commit drm/atomic: Add atomic_print_state to private objects drm/vc4: Constify private state accessors drm/vc4: Implement atomic_print_state for HVS channel state drivers/gpu/drm/drm_atomic.c | 20 ++++++++++++++++++++ drivers/gpu/drm/drm_atomic_uapi.c | 4 ---- drivers/gpu/drm/vc4/vc4_kms.c | 24 +++++++++++++++++++++--- include/drm/drm_atomic.h | 27 +++++++++++++++++++++++---- 4 files changed, 64 insertions(+), 11 deletions(-) -- 2.35.1

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Re: [PATCH v7 1/3] i915/gvt: Separate the MMIO tracking table from GVT-g
by Wang, Zhi A 31 Mar '22

31 Mar '22

Hi Chris: Thanks for the testing. Can you attach the dmesg? I tested mostly on my skylake desktop with some 3D workload. Thanks, Zhi. On 3/31/22 7:42 AM, Christoph Hellwig wrote: > On Thu, Mar 31, 2022 at 07:11:07AM +0000, Wang, Zhi A wrote: >> Hi Jani and Joonas: >> >> Are you OK with these patches? I noticed I need to change the license of the new file. Will do that when check-in if you are OK with these. > > So I actually ended up testing the patches, and first they fail to > compile against current mainline (trivial fix attached), but then > the guest (also latest mainline as of today) also hangs during the > initialization of th i915 driver on i7-8550U-based Thinkpad. Plain > mainline as the host boots fine, but spews a lot of warnings. > > Host and guest configs are also attached. >

1 0

[PATCH] drm/amdkfd: Add SVM API support capability bits
by Alex Sierra 30 Mar '22

30 Mar '22

From: Philip Yang <Philip.Yang(a)amd.com> SVMAPISupported property added to HSA_CAPABILITY, the value match HSA_CAPABILITY defined in Thunk spec: SVMAPISupported: it will not be supported on older kernels that don't have HMM or on systems with GFXv8 or older GPUs without support for 48-bit virtual addresses. CoherentHostAccess property added to HSA_MEMORYPROPERTY, the value match HSA_MEMORYPROPERTY defined in Thunk spec: CoherentHostAccess: whether or not device memory can be coherently accessed by the host CPU. Signed-off-by: Philip Yang <Philip.Yang(a)amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling(a)amd.com> Signed-off-by: Felix Kuehling <Felix.Kuehling(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> --- drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 6 ++++++ drivers/gpu/drm/amd/amdkfd/kfd_topology.h | 10 ++++++---- 2 files changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c index cdef608db4f4..083ac9babfa8 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c @@ -1419,6 +1419,12 @@ int kfd_topology_add_device(struct kfd_dev *gpu) dev->node_props.capability |= (adev->ras_features != 0) ? HSA_CAP_RASEVENTNOTIFY : 0; + /* SVM API and HMM page migration work together, device memory type + * is initialized to not 0 when page migration register device memory. + */ + if (adev->kfd.dev->pgmap.type != 0) + dev->node_props.capability |= HSA_CAP_SVMAPI_SUPPORTED; + kfd_debug_print_topology(); if (!res) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h index b8b68087bd7a..6bd6380b0ee0 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.h @@ -53,8 +53,9 @@ #define HSA_CAP_ASIC_REVISION_MASK 0x03c00000 #define HSA_CAP_ASIC_REVISION_SHIFT 22 #define HSA_CAP_SRAM_EDCSUPPORTED 0x04000000 +#define HSA_CAP_SVMAPI_SUPPORTED 0x08000000 -#define HSA_CAP_RESERVED 0xf80f8000 +#define HSA_CAP_RESERVED 0xf00f8000 struct kfd_node_properties { uint64_t hive_id; @@ -98,9 +99,10 @@ struct kfd_node_properties { #define HSA_MEM_HEAP_TYPE_GPU_LDS 4 #define HSA_MEM_HEAP_TYPE_GPU_SCRATCH 5 -#define HSA_MEM_FLAGS_HOT_PLUGGABLE 0x00000001 -#define HSA_MEM_FLAGS_NON_VOLATILE 0x00000002 -#define HSA_MEM_FLAGS_RESERVED 0xfffffffc +#define HSA_MEM_FLAGS_HOT_PLUGGABLE 0x00000001 +#define HSA_MEM_FLAGS_NON_VOLATILE 0x00000002 +#define HSA_MEM_FLAGS_COHERENTHOSTACCESS 0x00000004 +#define HSA_MEM_FLAGS_RESERVED 0xfffffff8 struct kfd_mem_properties { struct list_head list; -- 2.32.0

3 3

[PATCH v2 0/3] split vm_normal_pages for LRU and non-LRU handling
by Alex Sierra 30 Mar '22

30 Mar '22

With DEVICE_COHERENT, we'll soon have vm_normal_pages() return device-managed anonymous pages that are not LRU pages. Although they behave like normal pages for purposes of mapping in CPU page, and for COW. They do not support LRU lists, NUMA migration or THP. The difference between new vm_normal_lru_pages vs vm_normal_pages() is, the former makes sure to return pages that are LRU handled only. We also introduced a FOLL_LRU flag that adds the same behaviour to follow_page and related APIs, to allow callers to specify that they expect to put pages on an LRU list. HMM tests were added to selftest to excercise these changes with device coherent pages. New test called hmm_cow_in_device, will test pages marked as COW, allocated in device zone. Also, more configurations were added into hmm_gup_test to test basic get user pages and get user pages fast paths in device zone pages. v2: - Changed the general description for this cover letter. - Changed commit message for patch 1/3. - Keep vm_normal_pages and add vm_normal_lru_pages, instead of rename both. - Add proper kernel-doc format to new function and minimize code churn. TODO: vm_normal_pages with pte_devmap entries still return NULL, instead of return the actual device page. The reason is page->_mapcount is never incremented for device pages that are mmap through DAX mechanism using pmem driver mounted into ext4 filesystem. When these pages are unmap, zap_pte_range is called and vm_normal_page return a valid page with page_mapcount() = 0, before page_remove_rmap is called. Alex Sierra (3): mm: add vm_normal_lru_pages for LRU handled pages only tools: add more gup configs to hmm_gup selftests tools: add selftests to hmm for COW in device memory fs/proc/task_mmu.c | 2 +- include/linux/mm.h | 9 +- mm/gup.c | 8 +- mm/huge_memory.c | 2 +- mm/khugepaged.c | 8 +- mm/ksm.c | 4 +- mm/madvise.c | 4 +- mm/memory.c | 40 ++++++- mm/mempolicy.c | 4 +- mm/migrate.c | 2 +- mm/mlock.c | 6 +- mm/mprotect.c | 2 +- tools/testing/selftests/vm/hmm-tests.c | 139 +++++++++++++++++++++---- 13 files changed, 187 insertions(+), 43 deletions(-) -- 2.32.0

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dri-devel March 2022