search for: cdevice

...>i_cdev; > + struct dmirror *dmirror; > + int ret; > + > + /* Mirror this process address space */ > + dmirror = kzalloc(sizeof(*dmirror), GFP_KERNEL); > + if (dmirror == NULL) > + return -ENOMEM; > + > + dmirror->mdevice = container_of(cdev, struct dmirror_device, cdevice); > + mutex_init(&dmirror->mutex); > + xa_init(&dmirror->pt); > + > + ret = mmu_interval_notifier_insert(&dmirror->notifier, current->mm, > + 0, ULONG_MAX & PAGE_MASK, &dmirror_min_ops); > + if (ret) { > + kfree(dmirror); > + return ret;...

On 3/17/20 5:59 AM, Christoph Hellwig wrote: > On Tue, Mar 17, 2020 at 09:47:55AM -0300, Jason Gunthorpe wrote: >> I've been using v7 of Ralph's tester and it is working well - it has >> DEVICE_PRIVATE support so I think it can test this flow too. Ralph are >> you able? >> >> This hunk seems trivial enough to me, can we include it now? > > I can send

These changes are based on Jason's latest hmm branch. Patch 1 was previously posted here [1] but was dropped from the orginal series. Hopefully, the tests will reduce concerns about edge conditions. I'm sure more tests could be usefully added but I thought this was a good starting point. [1] https://lore.kernel.org/linux-mm/20190726005650.2566-6-rcampbell at nvidia.com/ Ralph Campbell

This series adds new functions to the mmu interval notifier API to allow device drivers with MMUs to dynamically mirror a process' page tables based on device faults and invalidation callbacks. The Nouveau driver is updated to use the extended API and a set of stand alone self tests is added to help validate and maintain correctness. The patches are based on linux-5.5.0-rc6 and are for

...r *dmirror; >> + int ret; >> + >> + /* Mirror this process address space */ >> + dmirror = kzalloc(sizeof(*dmirror), GFP_KERNEL); >> + if (dmirror == NULL) >> + return -ENOMEM; >> + >> + dmirror->mdevice = container_of(cdev, struct dmirror_device, cdevice); >> + mutex_init(&dmirror->mutex); >> + xa_init(&dmirror->pt); >> + >> + ret = mmu_interval_notifier_insert(&dmirror->notifier, current->mm, >> + 0, ULONG_MAX & PAGE_MASK, &dmirror_min_ops); >> + if (ret) { >> + kfree(dm...

....pfn_shift = DPT_SHIFT, - .pfn_flags_mask = 0, + .hmm_pfns = pfns, .dev_private_owner = dmirror->mdevice, }; int ret = 0; @@ -1097,6 +1071,7 @@ static int dmirror_device_init(struct dmirror_device *mdevice, int id) spin_lock_init(&mdevice->lock); cdev_init(&mdevice->cdevice, &dmirror_fops); + mdevice->cdevice.owner = THIS_MODULE; ret = cdev_add(&mdevice->cdevice, dev, 1); if (ret) return ret; diff --git a/tools/testing/selftests/vm/hmm-tests.c b/tools/testing/selftests/vm/hmm-tests.c index 033a12c7ab5b6d..da15471a2bbf9a 100644 --- a/tools/testing/...

...setupapi: Implement SetupDiRemoveDevice(). setupapi: Delete all empty parent keys of a removed device key. wined3d: Use wined3d_state_get_light() in wined3d_state_record_lights(). setupapi: Implement SetupDiDeleteDeviceInterfaceData(). setupapi: Get rid of the redundant cDevices parameter to struct device. setupapi: Implement SetupDiDeleteDeviceInfo(). ntdll: Call the select request directly in RtlWaitOnAddress(). ntdll: Use a critical section to ensure that RtlWaitOnAddress compares and queues atomically. setupapi: Use strtoulW(). Zhiyi Zhang (5)...

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. Earlier versions were posted previously [1] and [2]. The patches apply cleanly to the linux-mm 5.10.0-rc2 tree. There are a lot of other THP patches being posted. I don't think there are any semantic conflicts but there may be some merge conflicts depending on

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. An earlier version was posted previously [1]. This version now supports splitting a THP midway in the migration process which led to a number of changes. The patches apply cleanly to the current linux-mm tree. Since there are a couple of patches in linux-mm from Dan