The patch titled
Subject: mm/hmm: add ARCH_HAS_HMM_MIRROR ARCH_HAS_HMM_DEVICE Kconfig
has been added to the -mm tree. Its filename is
mm-hmm-add-arch_has_hmm_mirror-arch_has_hmm_device-kconfig.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-hmm-add-arch_has_hmm_mirror-arch_has_hmm_device-kconfig.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-hmm-add-arch_has_hmm_mirror-arch_has_hmm_device-kconfig.patch
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------------------------------------------------------
From: Jérôme Glisse <jglisse@xxxxxxxxxx>
Subject: mm/hmm: add ARCH_HAS_HMM_MIRROR ARCH_HAS_HMM_DEVICE Kconfig
Add 2 new Kconfig variables that are not used by anyone. I check that
various make ARCH=somearch allmodconfig do work and do not complain. This
new Kconfig needs to be added first so that device drivers that depend on
HMM can be updated.
Once drivers are updated then I can update the HMM Kconfig to depend on
this new Kconfig in a followup patch.
Link: http://lkml.kernel.org/r/20190417211141.17580-1-jglisse@xxxxxxxxxx
Signed-off-by: Jérôme Glisse <jglisse@xxxxxxxxxx>
Cc: Guenter Roeck <linux@xxxxxxxxxxxx>
Cc: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Cc: Ralph Campbell <rcampbell@xxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/Kconfig | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
--- a/mm/Kconfig~mm-hmm-add-arch_has_hmm_mirror-arch_has_hmm_device-kconfig
+++ a/mm/Kconfig
@@ -670,6 +670,22 @@ config ZONE_DEVICE
If FS_DAX is enabled, then say Y.
+config ARCH_HAS_HMM_MIRROR
+ bool
+ default y
+ depends on (X86_64 || PPC64)
+ depends on MMU && 64BIT
+
+config ARCH_HAS_HMM_DEVICE
+ bool
+ default y
+ depends on (X86_64 || PPC64)
+ depends on MEMORY_HOTPLUG
+ depends on MEMORY_HOTREMOVE
+ depends on SPARSEMEM_VMEMMAP
+ depends on ARCH_HAS_ZONE_DEVICE
+ select XARRAY_MULTI
+
config ARCH_HAS_HMM
bool
default y
_
Patches currently in -mm which might be from jglisse@xxxxxxxxxx are
zram-pass-down-the-bvec-we-need-to-read-into-in-the-work-struct.patch
mm-hmm-select-mmu-notifier-when-selecting-hmm-v2.patch
mm-hmm-use-reference-counting-for-hmm-struct-v3.patch
mm-hmm-do-not-erase-snapshot-when-a-range-is-invalidated.patch
mm-hmm-improve-and-rename-hmm_vma_get_pfns-to-hmm_range_snapshot-v2.patch
mm-hmm-improve-and-rename-hmm_vma_fault-to-hmm_range_fault-v3.patch
mm-hmm-improve-driver-api-to-work-and-wait-over-a-range-v3.patch
mm-hmm-add-default-fault-flags-to-avoid-the-need-to-pre-fill-pfns-arrays-v2.patch
mm-hmm-mirror-hugetlbfs-snapshoting-faulting-and-dma-mapping-v3.patch
mm-hmm-allow-to-mirror-vma-of-a-file-on-a-dax-backed-filesystem-v3.patch
mm-hmm-add-helpers-to-test-if-mm-is-still-alive-or-not.patch
mm-hmm-add-an-helper-function-that-fault-pages-and-map-them-to-a-device-v3.patch
mm-hmm-add-an-helper-function-that-fault-pages-and-map-them-to-a-device-v3-fix.patch
mm-hmm-convert-various-hmm_pfn_-to-device_entry-which-is-a-better-name.patch
mm-mmu_notifier-helper-to-test-if-a-range-invalidation-is-blockable.patch
mm-mmu_notifier-convert-user-range-blockable-to-helper-function.patch
mm-mmu_notifier-convert-mmu_notifier_range-blockable-to-a-flags.patch
mm-mmu_notifier-contextual-information-for-event-enums.patch
mm-mmu_notifier-contextual-information-for-event-triggering-invalidation-v2.patch
mm-mmu_notifier-use-correct-mmu_notifier-events-for-each-invalidation.patch
mm-mmu_notifier-pass-down-vma-and-reasons-why-mmu-notifier-is-happening-v2.patch
mm-mmu_notifier-mmu_notifier_range_update_to_read_only-helper.patch
mm-hmm-kconfig-split-hmm-address-space-mirroring-from-device-memory.patch
mm-hmm-add-arch_has_hmm_mirror-arch_has_hmm_device-kconfig.patch
