Use Balbir Singh's series for device-private THP support [1] and previous preparation work in drm_pagemap [2] to add 2MB/THP support in xe. This leads to significant performance improvements when using SVM with 2MB pages.
[1] https://lore.kernel.org/linux-mm/[email protected]/ [2] https://patchwork.freedesktop.org/series/151754/ v2: - rebase on top of multi-device SVM - add drm_pagemap_cpages() with temporary patch - address other feedback from Matt Brost on v1 v3: The major change is to remove the dependency to the mm/huge_memory helper migrate_device_split_page() that was called explicitely when a 2M buddy allocation backed by a large folio would be later reused for a smaller allocation (4K or 64K). Instead, the first 3 patches provided by Matthew Brost ensure large folios are split at the time of freeing. v4: - add order argument to folio_free callback - send complete series to linux-mm and MM folks as requested (Zi Yan and Andrew Morton) and cover letter to anyone receiving at least one of the patches (Liam R. Howlett) v5: - update zone_device_page_init() in patch #1 to reinitialize large zone device private folios Cc: Zi Yan <[email protected]> Cc: Madhavan Srinivasan <[email protected]> Cc: Alistair Popple <[email protected]> Cc: Lorenzo Stoakes <[email protected]> Cc: Liam R. Howlett <[email protected]> Cc: Suren Baghdasaryan <[email protected]> Cc: Michal Hocko <[email protected]> Cc: Mike Rapoport <[email protected]> Cc: Vlastimil Babka <[email protected]> Cc: Nicholas Piggin <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: "Christophe Leroy (CS GROUP)" <[email protected]> Cc: Felix Kuehling <[email protected]> Cc: Alex Deucher <[email protected]> Cc: "Christian König" <[email protected]> Cc: David Airlie <[email protected]> Cc: Simona Vetter <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: Thomas Zimmermann <[email protected]> Cc: Lyude Paul <[email protected]> Cc: Danilo Krummrich <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Logan Gunthorpe <[email protected]> Cc: David Hildenbrand <[email protected]> Cc: Oscar Salvador <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Jason Gunthorpe <[email protected]> Cc: Leon Romanovsky <[email protected]> Cc: Balbir Singh <[email protected]> Cc: Dan Williams <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Jan Kara <[email protected]> Cc: Alexander Viro <[email protected]> Cc: Christian Brauner <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Francois Dugast (3): drm/pagemap: Unlock and put folios when possible drm/pagemap: Add helper to access zone_device_data drm/pagemap: Enable THP support for GPU memory migration Matthew Brost (2): mm/zone_device: Reinitialize large zone device private folios drm/pagemap: Correct cpages calculation for migrate_vma_setup arch/powerpc/kvm/book3s_hv_uvmem.c | 2 +- drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 2 +- drivers/gpu/drm/drm_gpusvm.c | 7 +- drivers/gpu/drm/drm_pagemap.c | 158 ++++++++++++++++++----- drivers/gpu/drm/nouveau/nouveau_dmem.c | 2 +- include/drm/drm_pagemap.h | 15 +++ include/linux/memremap.h | 9 +- lib/test_hmm.c | 4 +- mm/memremap.c | 20 ++- 9 files changed, 180 insertions(+), 39 deletions(-) -- 2.43.0
