[PATCH v3 4/4] dax/bus.c: Use the right locking mode (read vs write) in size_show

eviewed-by: Dan Williams Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index 0011a6e6a8f2..f24b67c64d5e 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -937,11 +937,11 @@

[PATCH v3 3/4] dax/bus.c: Don't use down_write_killable for non-user processes

ned-off-by: Vishal Verma --- drivers/dax/bus.c | 6 +- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index e2c7354ce328..0011a6e6a8f2 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -1540,12 +1540,8 @@ static stru

[PATCH v3 1/4] dax/bus.c: replace WARN_ON_ONCE() with lockdep asserts

] Fixes: c05ae9d85b47 ("dax/bus.c: replace driver-core lock usage by a local rwsem") Cc: Andrew Morton Reported-by: Dan Williams Reviewed-by: Dan Williams Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 16 1 file changed, 8 insertions(+), 8 deletions(-) diff --git

[PATCH v3 2/4] dax/bus.c: fix locking for unregister_dax_dev / unregister_dax_mapping paths

ed. Fixes: c05ae9d85b47 ("dax/bus.c: replace driver-core lock usage by a local rwsem") Reported-by: Dan Williams Reviewed-by: Dan Williams Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 42 -- 1 file changed, 8 insertions(+), 34 deletions(-)

[PATCH v2 3/4] dax/bus.c: Don't use down_write_killable for non-user processes

Change an instance of down_write_killable() to a simple down_write() where there is no user process that might want to interrupt the operation. Fixes: c05ae9d85b47 ("dax/bus.c: replace driver-core lock usage by a local rwsem") Reported-by: Dan Williams Signed-off-by: Vishal Verma --

[PATCH v2 4/4] dax/bus.c: Use the right locking mode (read vs write) in size_show

) Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index db183eb5ce3a..66095e60a279 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -939,11 +939,11 @@ static ssize_t size_show(str

[PATCH v2 2/4] dax/bus.c: fix locking for unregister_dax_dev / unregister_dax_mapping paths

ove commit introduced in unregister_dax_dev() and unregister_dax_mapping(). Fixes: c05ae9d85b47 ("dax/bus.c: replace driver-core lock usage by a local rwsem") Reported-by: Dan Williams Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 44 ++--

[PATCH v2 1/4] dax/bus.c: replace WARN_ON_ONCE() with lockdep asserts

] Fixes: c05ae9d85b47 ("dax/bus.c: replace driver-core lock usage by a local rwsem") Cc: Andrew Morton Reported-by: Dan Williams Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 16 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/dax/bus.c b/d

[PATCH] dax/bus.c: replace WARN_ON_ONCE() with lockdep asserts

-core lock usage by a local rwsem") Cc: Andrew Morton Reported-by: Dan Williams Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 23 +-- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index 797e1ebff299..d89c

[PATCH v7 5/5] dax: add a sysfs knob to control memmap_on_memory behavior

-by: David Hildenbrand Reviewed-by: Huang, Ying Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 43 + Documentation/ABI/testing/sysfs-bus-dax | 17 + 2 files changed, 60 insertions(+) diff --git a/drivers/dax/bus.c b/drivers/dax/b

[PATCH v7 2/5] dax/bus.c: replace several sprintf() with sysfs_emit()

ned-off-by: Vishal Verma --- drivers/dax/bus.c | 32 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index cb148f74ceda..0fd948a4443e 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -269,7 +269,7

[PATCH v7 4/5] mm/memory_hotplug: export mhp_supports_memmap_on_memory()

Oscar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Acked-by: David Hildenbrand Signed-off-by: Vishal Verma --- include/linux/memory_hotplug.h | 6 ++ mm/memory_hotplug.c| 17 ++--- 2 files change

[PATCH v7 3/5] Documentatiion/ABI: Add ABI documentation for sys-bus-dax

Add the missing sysfs ABI documentation for the device DAX subsystem. Various ABI attributes under this have been present since v5.1, and more have been added over time. In preparation for adding a new attribute, add this file with the historical details. Cc: Dan Williams Signed-off-by: Vishal

[PATCH v7 1/5] dax/bus.c: replace driver-core lock usage by a local rwsem

() usage remains in dax/bus.c. Cc: Dan Williams Reported-by: Greg Kroah-Hartman Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 220 ++ 1 file changed, 157 insertions(+), 63 deletions(-) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index

[PATCH v7 0/5] Add DAX ABI for memmap_on_memory

Ying Cc: Greg Kroah-Hartman Cc: Matthew Wilcox Cc: To: Dan Williams To: Vishal Verma To: Dave Jiang To: Andrew Morton To: Oscar Salvador --- Vishal Verma (5): dax/bus.c: replace driver-core lock usage by a local rwsem dax/bus.c: replace several sprintf() with sysfs_emit()

[PATCH v6 3/4] mm/memory_hotplug: export mhp_supports_memmap_on_memory()

Oscar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Acked-by: David Hildenbrand Signed-off-by: Vishal Verma --- include/linux/memory_hotplug.h | 6 ++ mm/memory_hotplug.c| 17 ++--- 2 files change

[PATCH v6 4/4] dax: add a sysfs knob to control memmap_on_memory behavior

-by: David Hildenbrand Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 36 + Documentation/ABI/testing/sysfs-bus-dax | 17 2 files changed, 53 insertions(+) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index 62

[PATCH v6 1/4] Documentatiion/ABI: Add ABI documentation for sys-bus-dax

Add the missing sysfs ABI documentation for the device DAX subsystem. Various ABI attributes under this have been present since v5.1, and more have been added over time. In preparation for adding a new attribute, add this file with the historical details. Cc: Dan Williams Signed-off-by: Vishal

[PATCH v6 2/4] dax/bus: Use guard(device) in sysfs attribute helpers

Cc: Joao Martins Cc: Dan Williams Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 143 ++ 1 file changed, 59 insertions(+), 84 deletions(-) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index 1ff1ab5fa105..6226de131d17 100644 --- a/d

[PATCH v6 0/4] Add DAX ABI for memmap_on_memory

intel.com Changes in v2: - Fix CC lists, patch 1/2 didn't get sent correctly in v1 - Link to v1: https://lore.kernel.org/r/20231206-vv-dax_abi-v1-0-474eb88e2...@intel.com Cc: Cc: Cc: Cc: David Hildenbrand Cc: Dave Hansen Cc: Huang Ying Cc: Greg Kroah-Hartman Cc: To: Dan Williams To:

[PATCH v5 3/4] mm/memory_hotplug: export mhp_supports_memmap_on_memory()

Oscar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Signed-off-by: Vishal Verma --- include/linux/memory_hotplug.h | 6 ++ mm/memory_hotplug.c| 17 ++--- 2 files changed, 12 insertions(+), 11 deletions(-)

[PATCH v5 4/4] dax: add a sysfs knob to control memmap_on_memory behavior

-by: David Hildenbrand Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 38 + Documentation/ABI/testing/sysfs-bus-dax | 17 +++ 2 files changed, 55 insertions(+) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index 62

[PATCH v5 2/4] dax/bus: Use guard(device) in sysfs attribute helpers

Cc: Joao Martins Cc: Dan Williams Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 143 ++ 1 file changed, 59 insertions(+), 84 deletions(-) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index 1ff1ab5fa105..6226de131d17 100644 --- a/d

[PATCH v5 1/4] Documentatiion/ABI: Add ABI documentation for sys-bus-dax

Add the missing sysfs ABI documentation for the device DAX subsystem. Various ABI attributes under this have been present since v5.1, and more have been added over time. In preparation for adding a new attribute, add this file with the historical details. Cc: Dan Williams Signed-off-by: Vishal

[PATCH v5 0/4] Add DAX ABI for memmap_on_memory

x CC lists, patch 1/2 didn't get sent correctly in v1 - Link to v1: https://lore.kernel.org/r/20231206-vv-dax_abi-v1-0-474eb88e2...@intel.com Cc: Cc: Cc: Cc: David Hildenbrand Cc: Dave Hansen Cc: Huang Ying Cc: Greg Kroah-Hartman Cc: To: Dan Williams To: Vishal Verma To: Dave Ji

[PATCH v4 3/3] dax: add a sysfs knob to control memmap_on_memory behavior

-by: David Hildenbrand Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 32 Documentation/ABI/testing/sysfs-bus-dax | 17 + 2 files changed, 49 insertions(+) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index ce

[PATCH v4 2/3] dax/bus: Introduce guard(device) for device_{lock,unlock} flows

Cc: Joao Martins Suggested-by: Dan Williams Signed-off-by: Vishal Verma --- include/linux/device.h | 2 + drivers/dax/bus.c | 109 +++-- 2 files changed, 44 insertions(+), 67 deletions(-) diff --git a/include/linux/device.h b/include/linux/devi

[PATCH v4 1/3] Documentatiion/ABI: Add ABI documentation for sys-bus-dax

Add the missing sysfs ABI documentation for the device DAX subsystem. Various ABI attributes under this have been present since v5.1, and more have been added over time. In preparation for adding a new attribute, add this file with the historical details. Cc: Dan Williams Signed-off-by: Vishal

[PATCH v4 0/3] Add DAX ABI for memmap_on_memory

x_abi-v1-0-474eb88e2...@intel.com --- Vishal Verma (3): Documentatiion/ABI: Add ABI documentation for sys-bus-dax dax/bus: Introduce guard(device) for device_{lock,unlock} flows dax: add a sysfs knob to control memmap_on_memory behavior include/linux/device.h | 2 + d

[PATCH v3 2/2] dax: add a sysfs knob to control memmap_on_memory behavior

-by: David Hildenbrand Signed-off-by: Vishal Verma --- drivers/dax/bus.c | 47 + Documentation/ABI/testing/sysfs-bus-dax | 17 2 files changed, 64 insertions(+) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index 1ff1ab5fa105..28

[PATCH v3 1/2] Documentatiion/ABI: Add ABI documentation for sys-bus-dax

Add the missing sysfs ABI documentation for the device DAX subsystem. Various ABI attributes under this have been present since v5.1, and more have been added over time. In preparation for adding a new attribute, add this file with the historical details. Cc: Dan Williams Signed-off-by: Vishal

[PATCH v3 0/2] Add DAX ABI for memmap_on_memory

v1 - Link to v1: https://lore.kernel.org/r/20231206-vv-dax_abi-v1-0-474eb88e2...@intel.com --- Vishal Verma (2): Documentatiion/ABI: Add ABI documentation for sys-bus-dax dax: add a sysfs knob to control memmap_on_memory behavior drivers/dax/bus.c

[PATCH v2 1/2] Documentatiion/ABI: Add ABI documentation for sys-bus-dax

Add the missing sysfs ABI documentation for the device DAX subsystem. Various ABI attributes under this have been present since v5.1, and more have been added over time. In preparation for adding a new attribute, add this file with the historical details. Cc: Dan Williams Signed-off-by: Vishal

[PATCH v2 2/2] dax: add a sysfs knob to control memmap_on_memory behavior

ned-off-by: Vishal Verma --- drivers/dax/bus.c | 40 + Documentation/ABI/testing/sysfs-bus-dax | 13 +++ 2 files changed, 53 insertions(+) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index 1ff1ab5fa105..11abb57cc031 100644 --- a/d

[PATCH v2 0/2] Add DAX ABI for memmap_on_memory

additions behind the initial documentation creation. [1]: https://lore.kernel.org/linux-cxl/651f27b728fef_ae7e729...@dwillia2-xfh.jf.intel.com.notmuch/ Cc: Dan Williams Cc: Cc: Cc: To: Dave Jiang Signed-off-by: Vishal Verma Changes in v2: - Fix CC lists, patch 1/2 didn't get

[PATCH v10 3/3] dax/kmem: allow kmem to add memory with memmap_on_memory

Huang, Ying" Signed-off-by: Vishal Verma --- drivers/dax/bus.h | 1 + drivers/dax/dax-private.h | 1 + drivers/dax/bus.c | 3 +++ drivers/dax/cxl.c | 1 + drivers/dax/hmem/hmem.c | 1 + drivers/dax/kmem.c| 8 +++- drivers/dax/pmem.c| 1 + 7 fil

[PATCH v10 2/3] mm/memory_hotplug: split memmap_on_memory requests across memblocks

ar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Reviewed-by: Dan Williams Reviewed-by: "Huang, Ying" Acked-by: David Hildenbrand Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 212 ++

[PATCH v10 1/3] mm/memory_hotplug: replace an open-coded kmemdup() in add_memory_resource()

Hildenbrand Reviewed-by: Fan Ni Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index ab41a511e20a..3ed48059a780 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c

[PATCH v10 0/3] mm: use memmap_on_memory semantics for dax/kmem

emblock sized chunks. Patch 3 allows the dax region drivers to request memmap_on_memory semantics. CXL dax regions default this to 'on', all others default to off to keep existing behavior unchanged. Signed-off-by: Vishal Verma --- Changes in v10: - Rebase on current mainline (Andrew Mort

[PATCH v9 3/3] dax/kmem: allow kmem to add memory with memmap_on_memory

Ying Signed-off-by: Vishal Verma --- drivers/dax/bus.h | 1 + drivers/dax/dax-private.h | 1 + drivers/dax/bus.c | 3 +++ drivers/dax/cxl.c | 1 + drivers/dax/hmem/hmem.c | 1 + drivers/dax/kmem.c| 8 +++- drivers/dax/pmem.c| 1 + 7 files changed, 15

[PATCH v9 2/3] mm/memory_hotplug: split memmap_on_memory requests across memblocks

ar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Reviewed-by: Dan Williams Acked-by: David Hildenbrand Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 210 ++-- 1 file changed, 1

[PATCH v9 1/3] mm/memory_hotplug: replace an open-coded kmemdup() in add_memory_resource()

Hildenbrand Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index f8d3e7427e32..6be7de9efa55 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1439,11 +1439,11 @@ int

[PATCH v9 0/3] mm: use memmap_on_memory semantics for dax/kmem

emblock sized chunks. Patch 3 allows the dax region drivers to request memmap_on_memory semantics. CXL dax regions default this to 'on', all others default to off to keep existing behavior unchanged. Signed-off-by: Vishal Verma --- Changes in v9: - Fix error un

[PATCH v8 0/3] mm: use memmap_on_memory semantics for dax/kmem

emblock sized chunks. Patch 3 allows the dax region drivers to request memmap_on_memory semantics. CXL dax regions default this to 'on', all others default to off to keep existing behavior unchanged. Signed-off-by: Vishal Verma --- Changes in v8: - Fix unwinding in create_altmaps

[PATCH v8 2/3] mm/memory_hotplug: split memmap_on_memory requests across memblocks

ar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Reviewed-by: Dan Williams Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 213 ++-- 1 file changed, 138 insertions(+), 75 deletions

[PATCH v8 3/3] dax/kmem: allow kmem to add memory with memmap_on_memory

, Ying Signed-off-by: Vishal Verma --- drivers/dax/bus.h | 1 + drivers/dax/dax-private.h | 1 + drivers/dax/bus.c | 3 +++ drivers/dax/cxl.c | 1 + drivers/dax/hmem/hmem.c | 1 + drivers/dax/kmem.c| 8 +++- drivers/dax/pmem.c| 1 + 7 files changed, 15

[PATCH v8 1/3] mm/memory_hotplug: replace an open-coded kmemdup() in add_memory_resource()

Hildenbrand Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index f8d3e7427e32..6be7de9efa55 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1439,11 +1439,11 @@ int

[PATCH v7 2/3] mm/memory_hotplug: split memmap_on_memory requests across memblocks

ar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Reviewed-by: Dan Williams Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 209 1 file changed, 144 insertions(+), 65 deletions

[PATCH v7 3/3] dax/kmem: allow kmem to add memory with memmap_on_memory

: Vishal Verma --- drivers/dax/bus.h | 1 + drivers/dax/dax-private.h | 1 + drivers/dax/bus.c | 3 +++ drivers/dax/cxl.c | 1 + drivers/dax/hmem/hmem.c | 1 + drivers/dax/kmem.c| 8 +++- drivers/dax/pmem.c| 1 + 7 files changed, 15 insertions(+), 1 deletion

[PATCH v7 1/3] mm/memory_hotplug: replace an open-coded kmemdup() in add_memory_resource()

Hildenbrand Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index f8d3e7427e32..6be7de9efa55 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1439,11 +1439,11 @@ int

[PATCH v7 0/3] mm: use memmap_on_memory semantics for dax/kmem

emblock sized chunks. Patch 3 allows the dax region drivers to request memmap_on_memory semantics. CXL dax regions default this to 'on', all others default to off to keep existing behavior unchanged. Signed-off-by: Vishal Verma --- Changes in v7: - Make the add_memory_resource() flow symmet

[PATCH v6 3/3] dax/kmem: allow kmem to add memory with memmap_on_memory

: Vishal Verma --- drivers/dax/bus.h | 1 + drivers/dax/dax-private.h | 1 + drivers/dax/bus.c | 3 +++ drivers/dax/cxl.c | 1 + drivers/dax/hmem/hmem.c | 1 + drivers/dax/kmem.c| 8 +++- drivers/dax/pmem.c| 1 + 7 files changed, 15 insertions(+), 1 deletion

[PATCH v6 1/3] mm/memory_hotplug: replace an open-coded kmemdup() in add_memory_resource()

A review of the memmap_on_memory modifications to add_memory_resource() revealed an instance of an open-coded kmemdup(). Replace it with kmemdup(). Cc: Andrew Morton Cc: David Hildenbrand Cc: Michal Hocko Cc: Oscar Salvador Cc: Dan Williams Reported-by: Dan Williams Signed-off-by: Vishal

[PATCH v6 2/3] mm/memory_hotplug: split memmap_on_memory requests across memblocks

ar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Reviewed-by: Dan Williams Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 214 1 file changed, 148 insertions(+), 66 deletions

[PATCH v6 0/3] mm: use memmap_on_memory semantics for dax/kmem

control for the kmem driver that would allow an opt-out of using memmap_on_memory for the memory being added. Signed-off-by: Vishal Verma --- Changes in v6: - Add a prep patch to replace an open coded kmemdup in add_memory_resource() (Dan Williams) - Fix ordering of firmware_map_remove w.r.t tak

[PATCH v5 1/2] mm/memory_hotplug: split memmap_on_memory requests across memblocks

c: Andrew Morton Cc: David Hildenbrand Cc: Michal Hocko Cc: Oscar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 162 1 file ch

[PATCH v5 0/2] mm: use memmap_on_memory semantics for dax/kmem

control for the kmem driver that would allow an opt-out of using memmap_on_memory for the memory being added. Signed-off-by: Vishal Verma --- Changes in v5: - Separate out per-memblock operations from per memory block operations in try_remove_memory(), and rename the inner function appropriately

[PATCH v5 2/2] dax/kmem: allow kmem to add memory with memmap_on_memory

Cc: Huang Ying Reviewed-by: Jonathan Cameron Reviewed-by: David Hildenbrand Signed-off-by: Vishal Verma --- drivers/dax/bus.h | 1 + drivers/dax/dax-private.h | 1 + drivers/dax/bus.c | 38 ++ drivers/dax/cxl.c | 1 + drivers/dax

[PATCH v4 2/2] dax/kmem: allow kmem to add memory with memmap_on_memory

Cc: Huang Ying Reviewed-by: Jonathan Cameron Signed-off-by: Vishal Verma --- drivers/dax/bus.h | 1 + drivers/dax/dax-private.h | 1 + drivers/dax/bus.c | 38 ++ drivers/dax/cxl.c | 1 + drivers/dax/hmem/hmem.c | 1 + drivers/dax

[PATCH v4 1/2] mm/memory_hotplug: split memmap_on_memory requests across memblocks

c: Andrew Morton Cc: David Hildenbrand Cc: Michal Hocko Cc: Oscar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 165 +++- 1 file cha

[PATCH v4 0/2] mm: use memmap_on_memory semantics for dax/kmem

control for the kmem driver that would allow an opt-out of using memmap_on_memory for the memory being added. Signed-off-by: Vishal Verma --- Changes in v4: - Rebase to Aneesh's PPC64 memmap_on_memory series v8 [2]. - Tweak a goto / error path in add_memory_create_devices() (Jonathan) - Retain

[PATCH v3 2/2] dax/kmem: allow kmem to add memory with memmap_on_memory

behavior. Cc: Andrew Morton Cc: David Hildenbrand Cc: Michal Hocko Cc: Oscar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Signed-off-by: Vishal Verma --- drivers/dax/dax-private.h | 1 + drivers/dax/bus.c | 42

[PATCH v3 1/2] mm/memory_hotplug: split memmap_on_memory requests across memblocks

c: Andrew Morton Cc: David Hildenbrand Cc: Michal Hocko Cc: Oscar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 150 1 file ch

[PATCH v3 0/2] mm: use memmap_on_memory semantics for dax/kmem

control for the kmem driver that would allow an opt-out of using memmap_on_memory for the memory being added. Signed-off-by: Vishal Verma --- Changes in v3: - Rebase on Aneesh's patches [1] - Drop Patch 1 - it is not needed since [1] allows for dynamic setting of the memmap_on_memory p

[PATCH v2 3/3] dax/kmem: allow kmem to add memory with memmap_on_memory

the dax device to opt out of this behavior. Cc: Andrew Morton Cc: David Hildenbrand Cc: Oscar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Signed-off-by: Vishal Verma --- drivers/dax/dax-private.h | 1 + drivers/dax/bus.c | 48

[PATCH v2 2/3] mm/memory_hotplug: split memmap_on_memory requests across memblocks

needed. Cc: Andrew Morton Cc: David Hildenbrand Cc: Oscar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Suggested-by: David Hildenbrand Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 154 +++- 1 file changed,

[PATCH v2 1/3] mm/memory_hotplug: Export symbol mhp_supports_memmap_on_memory()

: Dave Hansen Cc: Huang Ying Reviewed-by: David Hildenbrand Signed-off-by: Vishal Verma --- include/linux/memory_hotplug.h | 5 + mm/memory_hotplug.c| 1 + 2 files changed, 6 insertions(+) diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index

[PATCH v2 0/3] mm: use memmap_on_memory semantics for dax/kmem

ing add_memory() and remove_memory() requests over memblock sized chunks. Patch 3 adds a sysfs control for the kmem driver that would allow an opt-out of using memmap_on_memory for the memory being added. Signed-off-by: Vishal Verma --- Changes in v2: - Drop the patch to create an override path for the memma

[PATCH 3/3] dax/kmem: Always enroll hotplugged memory for memmap_on_memory

respective module parameter setting. Cc: "Rafael J. Wysocki" Cc: Len Brown Cc: Andrew Morton Cc: David Hildenbrand Cc: Oscar Salvador Cc: Dan Williams Cc: Dave Jiang Cc: Dave Hansen Cc: Huang Ying Signed-off-by: Vishal Verma --- dri

[PATCH 2/3] mm/memory_hotplug: Export symbol mhp_supports_memmap_on_memory()

Cc: Huang Ying Signed-off-by: Vishal Verma --- mm/memory_hotplug.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index bb3845830922..92922080d3fa 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1328,6 +1328,7 @@ bool mhp_supports_memmap

[PATCH 1/3] mm/memory_hotplug: Allow an override for the memmap_on_memory param

nsen Cc: Huang Ying Signed-off-by: Vishal Verma --- include/linux/memory_hotplug.h | 2 +- drivers/acpi/acpi_memhotplug.c | 2 +- mm/memory_hotplug.c| 24 3 files changed, 18 insertions(+), 10 deletions(-) diff --git a/include/linux/memory_hotplug.h b/include/li

[PATCH 0/3] mm: use memmap_on_memory semantics for dax/kmem

face in dirvers/acpi/acpi_memoryhotplug.c, exporting the symbol so it can be called by kmem.c, and finally changing the kmem driver to add_memory() in chunks of memory_block_size_bytes(). Signed-off-by: Vishal Verma --- Vishal Verma (3): mm/memory_hotplug: Allow an override for the memmap_on_m

[PATCH] ACPI: NFIT: fix a potential deadlock during NFIT teardown

the cancel_delayed_work_sync() will safely flush it out. Reported-by: Dan Williams Signed-off-by: Vishal Verma --- drivers/acpi/nfit/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index f1cc5ec6a3b6..4e48d6db05eb 100

[PATCH v2 2/2] ACPI: HMAT: Fix initiator registration for single-initiator systems

d initiator_cmp() comparision callback. This prevents the singular list corner case naturally, and makes the code easier to follow as well. Cc: Cc: Rafael J. Wysocki Cc: Liu Shixin Cc: Dan Williams Cc: Kirill A. Shutemov Reported-by: Chris Piper Signed-off-by: Vishal Verma --- drivers/a

[PATCH v2 1/2] ACPI: HMAT: remove unnecessary variable initialization

l A. Shutemov Acked-by: Rafael J. Wysocki Signed-off-by: Vishal Verma --- drivers/acpi/numa/hmat.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c index 23f49a2f4d14..144a84f429ed 100644 --- a/drivers/acpi/numa/hmat.c +++ b/drivers/acpi/n

[PATCH v2 0/2] ACPI: HMAT: fix single-initiator target registrations

socki Cc: Liu Shixin Cc: Dan Williams Cc: linux-a...@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Cc: Chris Piper Cc: Kirill A. Shutemov Signed-off-by: Vishal Verma --- Changes in v2: - Collect Acks for patch 1. - Separate out the bitmask generation from the comparision helper to make

[PATCH 0/2] ACPI: HMAT: fix single-initiator target registrations

Patch 1 is an obvious cleanup found while fixing this problem. Patch 2 Fixes a bug with initiator registration for single-initiator systems. More details on this in its commit message. Vishal Verma (2): ACPI: HMAT: remove unnecessary variable initialization ACPI: HMAT: Fix initiator

[PATCH 2/2] ACPI: HMAT: Fix initiator registration for single-initiator systems

e mask for that explicitly. Reported-by: Chris Piper Cc: Cc: Rafael J. Wysocki Cc: Liu Shixin Cc: Dan Williams Signed-off-by: Vishal Verma --- drivers/acpi/numa/hmat.c | 32 ++-- 1 file changed, 30 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/numa/hmat.c b/dr

[PATCH 1/2] ACPI: HMAT: remove unnecessary variable initialization

In hmat_register_target_initiators(), the variable 'best' gets initialized in the outer per-locality-type for loop. The initialization just before setting up 'Access 1' targets was unnecessary. Remove it. Cc: Rafael J. Wysocki Cc: Liu Shixin Cc: Dan Williams Signed-

Re: [PATCH v3 10/11] PM, libnvdimm: Add runtime firmware activation support

device-driver properly > > supports hibernate-freeze. > > > > The libnvdimm sysfs interface is extended to support detection of a > > firmware activate capability. The mechanism supports enumeration and > > triggering of firmware activate, optionally in the > > hibernat

Re: [PATCH v3 10/11] PM, libnvdimm: Add runtime firmware activation support

numeration and > > triggering of firmware activate, optionally in the > > hibernate_quiet_exec() context. > > > > Cc: Pavel Machek > > Cc: Ira Weiny > > Cc: Len Brown > > Cc: Jonathan Corbet > > Cc: Dave Jiang > > Cc: Vishal Verma >

Re: [Ksummit-discuss] [PATCH v2 3/3] libnvdimm, MAINTAINERS: Maintainer Entry Profile

> Document the basic policies of the libnvdimm subsystem and provide a first > example of a Maintainer Entry Profile for others to duplicate and edit. > > Cc: Vishal Verma > Cc: Dave Jiang > Signed-off-by: Dan Williams > --- > Documentation/nvdimm/maintainer-

[PATCH] device-dax: Add a 'resource' attribute

ned-off-by: Vishal Verma --- drivers/dax/bus.c | 19 +++ 1 file changed, 19 insertions(+) diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c index 2109cfe80219..2f3c42ca416a 100644 --- a/drivers/dax/bus.c +++ b/drivers/dax/bus.c @@ -295,6 +295,22 @@ static ssize_t target_node_show(str

[tip:x86/urgent] acpi/nfit, x86/mce: Validate a MCE's address before using it

Commit-ID: e8a308e5f47e545e0d41d0686c00f5f5217c5f61 Gitweb: https://git.kernel.org/tip/e8a308e5f47e545e0d41d0686c00f5f5217c5f61 Author: Vishal Verma AuthorDate: Thu, 25 Oct 2018 18:37:29 -0600 Committer: Borislav Petkov CommitDate: Tue, 6 Nov 2018 19:13:26 +0100 acpi/nfit, x86/mce

[tip:x86/urgent] acpi/nfit, x86/mce: Handle only uncorrectable machine checks

Commit-ID: 5d96c9342c23ee1d084802dcf064caa67ecaa45b Gitweb: https://git.kernel.org/tip/5d96c9342c23ee1d084802dcf064caa67ecaa45b Author: Vishal Verma AuthorDate: Thu, 25 Oct 2018 18:37:28 -0600 Committer: Borislav Petkov CommitDate: Tue, 6 Nov 2018 19:13:10 +0100 acpi/nfit, x86/mce

Re: [PATCH] MAINTAINERS: Adding backup maintainers for libnvdimm and DAX

Ross Zwisler Fine by me as well Acked-by: Vishal Verma > ___ > Linux-nvdimm mailing list > linux-nvd...@lists.01.org > https://lists.01.org/mailman/listinfo/linux-nvdimm

Re: [PATCH] libnvdimm, btt: check memory allocation failure

tes for UEFI 2.7 format") > Signed-off-by: Christophe JAILLET > --- > drivers/nvdimm/btt.c | 2 ++ > 1 file changed, 2 insertions(+) Looks good, thank you. Reviewed-by: Vishal Verma > > diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c > index 60491641a8d6..607184e

Re: [PATCH] libnvdimm: fix badblock range handling of ARS range

Change __add_badblock_range() to set 'num_sectors' properly. > > Fixes: 0caeef63e6d2f866d85bb507bf63e0ce8ec91cef > Signed-off-by: Toshi Kani > Cc: Dan Williams > Cc: Vishal Verma > Cc: > --- > drivers/nvdimm/core.c |7 --- > 1 file changed, 4 inser

[PATCH] libnvdimm, btt: fix btt_rw_page not returning errors

Cc: Cc: Toshi Kani Cc: Dan Williams Cc: Jeff Moyer Signed-off-by: Vishal Verma --- drivers/nvdimm/btt.c | 9 ++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 7ca11df..4e56e72 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers

[tip:ras/urgent] acpi, nfit: Fix the memory error check in nfit_handle_mce()

Commit-ID: fc08a4703a418a398bbb575ac311d36d110ac786 Gitweb: http://git.kernel.org/tip/fc08a4703a418a398bbb575ac311d36d110ac786 Author: Vishal Verma AuthorDate: Fri, 19 May 2017 11:39:10 +0200 Committer: Thomas Gleixner CommitDate: Sun, 21 May 2017 21:39:59 +0200 acpi, nfit: Fix the

Re: [PATCH] libnvdimm: fix phys_addr for nvdimm_clear_poison

On 04/25, Kani, Toshimitsu wrote: > On Tue, 2017-04-25 at 15:44 -0600, Vishal Verma wrote: > > On 04/25, Toshi Kani wrote: [...] > > > > Should we be using nsio->res.start here or nsio->addr ? > > nsio->addr is a virtual address. We need to pass the phys

Re: [PATCH] libnvdimm: fix phys_addr for nvdimm_clear_poison

On 04/25, Toshi Kani wrote: > nvdimm_clear_poison() expects a physical address, not an offset. > Fix nsio_rw_bytes() to call nvdimm_clear_poison() with a physical > address. Good catch! > > Signed-off-by: Toshi Kani > Cc: Dan Williams > Cc: Dave Jiang > Cc: Vishal

[tip:ras/urgent] x86/mce: Make the MCE notifier a blocking one

Commit-ID: 0dc9c639e6553e39c13b2c0d54c8a1b098cb95e2 Gitweb: http://git.kernel.org/tip/0dc9c639e6553e39c13b2c0d54c8a1b098cb95e2 Author: Vishal Verma AuthorDate: Tue, 18 Apr 2017 20:42:35 +0200 Committer: Thomas Gleixner CommitDate: Tue, 18 Apr 2017 22:23:48 +0200 x86/mce: Make the MCE

Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from 'atomic'

On 04/12, Borislav Petkov wrote: > On Tue, Apr 11, 2017 at 04:44:57PM -0600, Vishal Verma wrote: > > The NFIT MCE handler callback (for handling media errors on NVDIMMs) > > takes a mutex to add the location of a memory error to a list. But since > > the notifier call cha

[RFC PATCH] x86, mce: change the mce notifier to 'blocking' from 'atomic'

callbacks to be run in a process context, and this can allow us to use the 'blocking' type notifier, where we can take mutexes etc. in the call chain functions. Reported-by: Ross Zwisler Cc: Borislav Petkov Cc: Tony Luck Cc: Dan Williams Signed-off-by: Vishal Verma --- arch/x86/kernel/

Re: [PATCH 0/3] acpi, nfit: nvdimm notification support + tests

mm/test/nfit.c | 64 +++++++-- > 7 files changed, 188 insertions(+), 20 deletions(-) Looks good to me. For the series, Reviewed-by: Vishal Verma

[PATCH] acpi, nfit: check for the correct event code in notifications

des are added, older kernels (without this fix) will misbehave by assuming all event notifications are for an NFIT Update. Fixes: 209851649dc4 ("acpi: nfit: Add support for hot-add") Cc: Cc: Cc: Dan Williams Reported-by: Linda Knippers Signed-off-by: Vishal Verma --- drivers/acpi/nfit/cor

[PATCH] acpi, nfit: fix acpi event notifications for nfit

The nfit driver had an acpi event notification handler, but it never would've worked because we weren't setting the ACPI_DRIVER_ALL_NOTIFY_EVENTS flag in acpi_driver. Cc: Cc: Cc: Dan Williams Cc: Xiao Guangrong Signed-off-by: Vishal Verma --- drivers/acpi/nfit/core.c | 1 + 1 fi

[PATCH v3 1/3] pmem: clarify a debug print in pmem_clear_poison

Prefix the sector number being cleared with a '0x' to make it clear that this is a hex value. Signed-off-by: Vishal Verma --- drivers/nvdimm/pmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 7251b4b..9f75

[PATCH v3 0/3] ARS rescanning triggered by latent errors or userspace

miliar with mce handling. The series is based on v4.7-rc7, and a tree is available at https://git.kernel.org/cgit/linux/kernel/git/vishal/nvdimm.git/log/?h=ars-ondemand Vishal Verma (3): pmem: clarify a debug print in pmem_clear_poison nfit, libnvdimm: allow an ARS scrub to be triggered on dema

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