Re: [PATCH v6 05/13] drm/amdkfd: generic type as sys mem on migration to ram

[PATCH v6 00/13] Support DEVICE_GENERIC memory in migrate_vma_* · Alex Sierra <hidden> · 2021-08-13
[PATCH v6 01/13] ext4/xfs: add page refcount helper · Alex Sierra <hidden> · 2021-08-13
Re: [PATCH v6 01/13] ext4/xfs: add page refcount helper · Christoph Hellwig <hch@lst.de> · 2021-08-15
[PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Alex Sierra <hidden> · 2021-08-13
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Christoph Hellwig <hch@lst.de> · 2021-08-15
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · John Hubbard <jhubbard@nvidia.com> · 2021-08-15
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Felix Kuehling <felix.kuehling@amd.com> · 2021-08-16
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Jerome Glisse <hidden> · 2021-08-20
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Ralph Campbell <hidden> · 2021-08-18
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Felix Kuehling <felix.kuehling@amd.com> · 2021-08-18
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Ralph Campbell <hidden> · 2021-08-18
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Sierra Guiza, Alejandro (Alex) <hidden> · 2021-08-19
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Felix Kuehling <felix.kuehling@amd.com> · 2021-08-19
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Christoph Hellwig <hch@lst.de> · 2021-08-20
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Jerome Glisse <hidden> · 2021-08-20
Re: [PATCH v6 02/13] mm: remove extra ZONE_DEVICE struct page refcount · Christoph Hellwig <hch@lst.de> · 2021-08-20
[PATCH v6 03/13] kernel: resource: lookup_resource as exported symbol · Alex Sierra <hidden> · 2021-08-13
[PATCH v6 04/13] drm/amdkfd: add SPM support for SVM · Alex Sierra <hidden> · 2021-08-13
Re: [PATCH v6 04/13] drm/amdkfd: add SPM support for SVM · Christoph Hellwig <hch@lst.de> · 2021-08-15
Re: [PATCH v6 04/13] drm/amdkfd: add SPM support for SVM · Felix Kuehling <felix.kuehling@amd.com> · 2021-08-16
Re: [PATCH v6 04/13] drm/amdkfd: add SPM support for SVM · Christoph Hellwig <hch@lst.de> · 2021-08-17
[PATCH v6 05/13] drm/amdkfd: generic type as sys mem on migration to ram · Alex Sierra <hidden> · 2021-08-13
Re: [PATCH v6 05/13] drm/amdkfd: generic type as sys mem on migration to ram · Christoph Hellwig <hch@lst.de> · 2021-08-15
Re: [PATCH v6 05/13] drm/amdkfd: generic type as sys mem on migration to ram · Sierra Guiza, Alejandro (Alex) <hidden> · 2021-08-16
Re: [PATCH v6 05/13] drm/amdkfd: generic type as sys mem on migration to ram · Zeng, Oak <hidden> · 2021-08-16
Re: [PATCH v6 05/13] drm/amdkfd: generic type as sys mem on migration to ram · Felix Kuehling <felix.kuehling@amd.com> · 2021-08-17
Re: [PATCH v6 05/13] drm/amdkfd: generic type as sys mem on migration to ram · Christoph Hellwig <hch@lst.de> · 2021-08-17
[PATCH v6 06/13] include/linux/mm.h: helpers to check zone device generic type · Alex Sierra <hidden> · 2021-08-13
Re: [PATCH v6 06/13] include/linux/mm.h: helpers to check zone device generic type · Christoph Hellwig <hch@lst.de> · 2021-08-15
[PATCH v6 07/13] mm: add generic type support to migrate_vma helpers · Alex Sierra <hidden> · 2021-08-13
Re: [PATCH v6 07/13] mm: add generic type support to migrate_vma helpers · Christoph Hellwig <hch@lst.de> · 2021-08-15
[PATCH v6 08/13] mm: call pgmap->ops->page_free for DEVICE_GENERIC pages · Alex Sierra <hidden> · 2021-08-13
Re: [PATCH v6 08/13] mm: call pgmap->ops->page_free for DEVICE_GENERIC pages · Christoph Hellwig <hch@lst.de> · 2021-08-15
Re: [PATCH v6 08/13] mm: call pgmap->ops->page_free for DEVICE_GENERIC pages · Felix Kuehling <felix.kuehling@amd.com> · 2021-08-16
Re: [PATCH v6 08/13] mm: call pgmap->ops->page_free for DEVICE_GENERIC pages · Christoph Hellwig <hch@lst.de> · 2021-08-17
Re: [PATCH v6 08/13] mm: call pgmap->ops->page_free for DEVICE_GENERIC pages · Felix Kuehling <felix.kuehling@amd.com> · 2021-08-17
Re: [PATCH v6 08/13] mm: call pgmap->ops->page_free for DEVICE_GENERIC pages · Christoph Hellwig <hch@lst.de> · 2021-08-20
Re: [PATCH v6 08/13] mm: call pgmap->ops->page_free for DEVICE_GENERIC pages · Jerome Glisse <hidden> · 2021-08-20
[PATCH v6 09/13] lib: test_hmm add ioctl to get zone device type · Alex Sierra <hidden> · 2021-08-13
[PATCH v6 10/13] lib: test_hmm add module param for zone device type · Alex Sierra <hidden> · 2021-08-13
[PATCH v6 11/13] lib: add support for device generic type in test_hmm · Alex Sierra <hidden> · 2021-08-13
[PATCH v6 12/13] tools: update hmm-test to support device generic type · Alex Sierra <hidden> · 2021-08-13
[PATCH v6 13/13] tools: update test_hmm script to support SP config · Alex Sierra <hidden> · 2021-08-13

From: Christoph Hellwig <hch@lst.de>
Date: 2021-08-15 15:38:29
Also in: amd-gfx, linux-ext4, linux-xfs

On Fri, Aug 13, 2021 at 01:31:42AM -0500, Alex Sierra wrote:

 	migrate.vma = vma;
 	migrate.start = start;
 	migrate.end = end;
-	migrate.flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE;
 	migrate.pgmap_owner = SVM_ADEV_PGMAP_OWNER(adev);
 
+	if (adev->gmc.xgmi.connected_to_cpu)
+		migrate.flags = MIGRATE_VMA_SELECT_SYSTEM;
+	else
+		migrate.flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE;

It's been a while since I touched this migrate code, but doesn't this
mean that if the range already contains system memory the migration
now won't do anything? for the connected_to_cpu case?

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