On Fri, May 3, 2019 at 5:33 AM Logan Gunthorpe wrote:
>
>
>
> On 2019-05-03 12:48 a.m., Brendan Higgins wrote:
> > On Thu, May 2, 2019 at 8:15 PM Logan Gunthorpe wrote:
> >> On 2019-05-01 5:01 p.m., Brendan Higgins wrote:
> >>> +/*
> >>> + * struct kunit_try_catch - provides a generic way to run
On Fri, May 3, 2019 at 7:34 AM shuah wrote:
>
> On 5/1/19 5:01 PM, Brendan Higgins wrote:
> > From: Avinash Kondareddy
> >
> > Tests how tests interact with test managed resources in their lifetime.
> >
> > Signed-off-by: Avinash Kondareddy
> > Signed-off-by: Brendan Higgins
> > ---
>
> I think
On Fri, May 3, 2019 at 7:38 AM shuah wrote:
>
> On 5/1/19 5:01 PM, Brendan Higgins wrote:
> > Add myself as maintainer of KUnit, the Linux kernel's unit testing
> > framework.
> >
> > Signed-off-by: Brendan Higgins
> > ---
> > MAINTAINERS | 10 ++
> > 1 file changed, 10 insertions(+)
>
原邮件信息 -
发件人:李总
收件人:linux-nvdimm
发送时间:2019-5-6 19:16:29
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On Sun, May 5, 2019 at 5:19 PM Frank Rowand wrote:
> You can see the full version 14 document in the submitter's repo:
>
> $ git clone https://github.com/isaacs/testanything.github.io.git
> $ cd testanything.github.io
> $ git checkout tap14
> $ ls tap-version-14-specification.md
>
> My und
> -static inline void remove_memory(int nid, u64 start, u64 size) {}
> +static inline bool remove_memory(int nid, u64 start, u64 size)
> +{
> + return -EBUSY;
> +}
This seems like an appropriate place for a WARN_ONCE(), if someone
manages to call remove_memory() with hotplug disabled.
BTW, I
On 5/6/19 11:01 AM, Dan Williams wrote:
>>> +void __remove_memory(int nid, u64 start, u64 size)
>>> {
>>> +
>>> + /*
>>> + * trigger BUG() is some memory is not offlined prior to calling this
>>> + * function
>>> + */
>>> + if (try_remove_memory(nid, start, size))
>>> +
On Mon, May 6, 2019 at 10:57 AM Dave Hansen wrote:
>
> > -static inline void remove_memory(int nid, u64 start, u64 size) {}
> > +static inline bool remove_memory(int nid, u64 start, u64 size)
> > +{
> > + return -EBUSY;
> > +}
>
> This seems like an appropriate place for a WARN_ONCE(), if some
On Mon, May 6, 2019 at 2:04 PM Dave Hansen wrote:
>
> On 5/6/19 11:01 AM, Dan Williams wrote:
> >>> +void __remove_memory(int nid, u64 start, u64 size)
> >>> {
> >>> +
> >>> + /*
> >>> + * trigger BUG() is some memory is not offlined prior to calling
> >>> this
> >>> + * function
>
On Mon, May 6, 2019 at 1:57 PM Dave Hansen wrote:
>
> > -static inline void remove_memory(int nid, u64 start, u64 size) {}
> > +static inline bool remove_memory(int nid, u64 start, u64 size)
> > +{
> > + return -EBUSY;
> > +}
>
> This seems like an appropriate place for a WARN_ONCE(), if someo
> On 5/3/19 4:14 PM, Brendan Higgins wrote:
> >> On 5/2/19 10:36 PM, Brendan Higgins wrote:
> >>> On Thu, May 2, 2019 at 6:45 PM Frank Rowand
> >>> wrote:
>
> On 5/2/19 4:45 PM, Brendan Higgins wrote:
> > On Thu, May 2, 2019 at 2:16 PM Frank Rowand
> > wrote:
> >>
> >>
> On Sun, May 5, 2019 at 5:19 PM Frank Rowand wrote:
> > You can see the full version 14 document in the submitter's repo:
> >
> > $ git clone https://github.com/isaacs/testanything.github.io.git
> > $ cd testanything.github.io
> > $ git checkout tap14
> > $ ls tap-version-14-specification
This all looks quite nice to me. Thanks, Vishal!
One minor nit: for those of us new to daxctl and friends, they can be a
bit hard to get started with. Could you maybe add a few example
invocations to the Documentation, or even this cover letter to help us
newbies get started?
___
On Mon, 2019-05-06 at 14:50 -0700, Dave Hansen wrote:
> This all looks quite nice to me. Thanks, Vishal!
>
> One minor nit: for those of us new to daxctl and friends, they can be
> a
> bit hard to get started with. Could you maybe add a few example
> invocations to the Documentation, or even thi
On Mon, 2019-05-06 at 22:14 +, Verma, Vishal L wrote:
> On Mon, 2019-05-06 at 14:50 -0700, Dave Hansen wrote:
> > This all looks quite nice to me. Thanks, Vishal!
> >
> > One minor nit: for those of us new to daxctl and friends, they can
> > be
> > a
> > bit hard to get started with. Could
Allow sub-section sized ranges to be added to the memmap.
populate_section_memmap() takes an explict pfn range rather than
assuming a full section, and those parameters are plumbed all the way
through to vmmemap_populate(). There should be no sub-section usage in
current deployments. New warnings a
Sub-section hotplug support reduces the unit of operation of hotplug
from section-sized-units (PAGES_PER_SECTION) to sub-section-sized units
(PAGES_PER_SUBSECTION). Teach shrink_{zone,pgdat}_span() to consider
PAGES_PER_SUBSECTION boundaries as the points where pfn_valid(), not
valid_section(), can
From: Robin Murphy
Trying to activate ZONE_DEVICE for arm64 reveals that memremap's
internal helpers for sparsemem sections conflict with and arm64's
definitions for hugepages, which inherit the name of "sections" from
earlier versions of the ARM architecture.
Disambiguate memremap (and now HMM
Towards enabling memory hotplug to track partial population of a
section, introduce 'struct mem_section_usage'.
A pointer to a 'struct mem_section_usage' instance replaces the existing
pointer to a 'pageblock_flags' bitmap. Effectively it adds one more
'unsigned long' beyond the 'pageblock_flags'
Prepare for hot{plug,remove} of sub-ranges of a section by tracking a
sub-section active bitmask, each bit representing a PMD_SIZE span of the
architecture's memory hotplug section size.
The implications of a partially populated section is that pfn_valid()
needs to go beyond a valid_section() chec
Changes since v7 [1]:
- Make subsection helpers pfn based rather than physical-address based
(Oscar and Pavel)
- Make subsection bitmap definition scalable for different section and
sub-section sizes across architectures. As a result:
unsigned long map_active
...is converted to:
The zone type check was a leftover from the cleanup that plumbed altmap
through the memory hotplug path, i.e. commit da024512a1fa "mm: pass the
vmem_altmap to arch_remove_memory and __remove_pages".
Cc: Michal Hocko
Cc: Logan Gunthorpe
Cc: Pavel Tatashin
Reviewed-by: David Hildenbrand
Reviewed
Prepare the memory hot-{add,remove} paths for handling sub-section
ranges by plumbing the starting page frame and number of pages being
handled through arch_{add,remove}_memory() to
sparse_{add,remove}_one_section().
This is simply plumbing, small cleanups, and some identifier renames. No
intended
Given there are no more usages of is_dev_zone() outside of 'ifdef
CONFIG_ZONE_DEVICE' protection, kill off the compilation helper.
Cc: Michal Hocko
Cc: Logan Gunthorpe
Acked-by: David Hildenbrand
Reviewed-by: Oscar Salvador
Reviewed-by: Pavel Tatashin
Signed-off-by: Dan Williams
---
include
Teach devm_memremap_pages() about the new sub-section capabilities of
arch_{add,remove}_memory(). Effectively, just replace all usage of
align_start, align_end, and align_size with res->start, res->end, and
resource_size(res). The existing sanity check will still make sure that
the two separate rem
Now that the mm core supports section-unaligned hotplug of ZONE_DEVICE
memory, we no longer need to add padding at pfn/dax device creation
time. The kernel will still honor padding established by older kernels.
Reported-by: Jeff Moyer
Signed-off-by: Dan Williams
---
drivers/nvdimm/pfn.h |
At namespace creation time there is the potential for the "expected to
be zero" fields of a 'pfn' info-block to be filled with indeterminate
data. While the kernel buffer is zeroed on allocation it is immediately
overwritten by nd_pfn_validate() filling it with the current contents of
the on-media
The libnvdimm sub-system has suffered a series of hacks and broken
workarounds for the memory-hotplug implementation's awkward
section-aligned (128MB) granularity. For example the following backtrace
is emitted when attempting arch_add_memory() with physical address
ranges that intersect 'System RA
On 5/1/19 4:01 PM, Brendan Higgins wrote:
> ## TLDR
>
> I rebased the last patchset on 5.1-rc7 in hopes that we can get this in
> 5.2.
>
> Shuah, I think you, Greg KH, and myself talked off thread, and we agreed
> we would merge through your tree when the time came? Am I remembering
> correctly?
From: Kangjie Lu
[ Upstream commit 55c1fc0af29a6c1b92f217b7eb7581a882e0c07c ]
In case kmemdup fails, the fix goes to blk_err to avoid NULL
pointer dereference.
Signed-off-by: Kangjie Lu
Signed-off-by: Dan Williams
Signed-off-by: Sasha Levin
---
drivers/nvdimm/namespace_devs.c | 5 -
1 f
From: Dave Jiang
[ Upstream commit 037c8489ade669e0f09ad40d5b91e5e1159a14b1 ]
Add a zero key in order to standardize hardware that want a key of 0's to
be passed. Some platforms defaults to a zero-key with security enabled
rather than allow the OS to enable the security. The zero key would allow
From: Aditya Pakki
[ Upstream commit 486fa92df4707b5df58d6508728bdb9321a59766 ]
In case kmemdup fails, the fix releases resources and returns to
avoid the NULL pointer dereference.
Signed-off-by: Aditya Pakki
Signed-off-by: Dan Williams
Signed-off-by: Sasha Levin
---
drivers/nvdimm/btt_devs
From: Dan Williams
[ Upstream commit 351f339faa308c1c1461314a18c832239a841ca0 ]
The dynamic-debug statements for command payload output only get emitted
when the command is not ND_CMD_CALL. Move the output payload dumping
ahead of the early return path for ND_CMD_CALL.
Fixes: 31eca76ba2fc9 ("..
From: Li RongQing
[ Upstream commit 9dc6488e84b0f64df17672271664752488cd6a25 ]
If offset is not zero and length is bigger than PAGE_SIZE,
this will cause to out of boundary access to a page memory
Fixes: 98cc093cba1e ("block, THP: make block_device_operations.rw_page support
THP")
Co-developed
From: Aditya Pakki
[ Upstream commit 486fa92df4707b5df58d6508728bdb9321a59766 ]
In case kmemdup fails, the fix releases resources and returns to
avoid the NULL pointer dereference.
Signed-off-by: Aditya Pakki
Signed-off-by: Dan Williams
Signed-off-by: Sasha Levin
---
drivers/nvdimm/btt_devs
From: Dan Williams
[ Upstream commit 351f339faa308c1c1461314a18c832239a841ca0 ]
The dynamic-debug statements for command payload output only get emitted
when the command is not ND_CMD_CALL. Move the output payload dumping
ahead of the early return path for ND_CMD_CALL.
Fixes: 31eca76ba2fc9 ("..
From: Li RongQing
[ Upstream commit 9dc6488e84b0f64df17672271664752488cd6a25 ]
If offset is not zero and length is bigger than PAGE_SIZE,
this will cause to out of boundary access to a page memory
Fixes: 98cc093cba1e ("block, THP: make block_device_operations.rw_page support
THP")
Co-developed
From: Kangjie Lu
[ Upstream commit 55c1fc0af29a6c1b92f217b7eb7581a882e0c07c ]
In case kmemdup fails, the fix goes to blk_err to avoid NULL
pointer dereference.
Signed-off-by: Kangjie Lu
Signed-off-by: Dan Williams
Signed-off-by: Sasha Levin
---
drivers/nvdimm/namespace_devs.c | 5 -
1 f
From: Kangjie Lu
[ Upstream commit 55c1fc0af29a6c1b92f217b7eb7581a882e0c07c ]
In case kmemdup fails, the fix goes to blk_err to avoid NULL
pointer dereference.
Signed-off-by: Kangjie Lu
Signed-off-by: Dan Williams
Signed-off-by: Sasha Levin
---
drivers/nvdimm/namespace_devs.c | 5 -
1 f
From: Aditya Pakki
[ Upstream commit 486fa92df4707b5df58d6508728bdb9321a59766 ]
In case kmemdup fails, the fix releases resources and returns to
avoid the NULL pointer dereference.
Signed-off-by: Aditya Pakki
Signed-off-by: Dan Williams
Signed-off-by: Sasha Levin
---
drivers/nvdimm/btt_devs
From: Aditya Pakki
[ Upstream commit 486fa92df4707b5df58d6508728bdb9321a59766 ]
In case kmemdup fails, the fix releases resources and returns to
avoid the NULL pointer dereference.
Signed-off-by: Aditya Pakki
Signed-off-by: Dan Williams
Signed-off-by: Sasha Levin
---
drivers/nvdimm/btt_devs
From: Kangjie Lu
[ Upstream commit 55c1fc0af29a6c1b92f217b7eb7581a882e0c07c ]
In case kmemdup fails, the fix goes to blk_err to avoid NULL
pointer dereference.
Signed-off-by: Kangjie Lu
Signed-off-by: Dan Williams
Signed-off-by: Sasha Levin
---
drivers/nvdimm/namespace_devs.c | 5 -
1 f
From: Aditya Pakki
[ Upstream commit 486fa92df4707b5df58d6508728bdb9321a59766 ]
In case kmemdup fails, the fix releases resources and returns to
avoid the NULL pointer dereference.
Signed-off-by: Aditya Pakki
Signed-off-by: Dan Williams
Signed-off-by: Sasha Levin
---
drivers/nvdimm/btt_devs
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