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On 5/12/21 10:57 PM, Peter Zijlstra wrote:
> On Wed, May 12, 2021 at 10:08:21PM +0530, Kajol Jain wrote:
>> +static void nvdimm_pmu_read(struct perf_event *event)
>> +{
>> +struct nvdimm_pmu *nd_pmu = to_nvdimm_pmu(event->pmu);
>> +
>> +/* jump to arch/platform specific callbacks if any
On Thu, May 13, 2021 at 07:57:47AM +, ruansy.f...@fujitsu.com wrote:
> > -Original Message-
> > From: Darrick J. Wong
> > Subject: Re: [PATCH v5 1/7] fsdax: Introduce dax_iomap_cow_copy()
> >
> > On Tue, May 11, 2021 at 11:09:27AM +0800, Shiyang Ruan wrote:
> > > In the case where
On 5/10/21 8:19 PM, Dan Williams wrote:
> On Thu, May 6, 2021 at 4:02 AM Joao Martins wrote:
> [..]
+static pte_t * __meminit vmemmap_lookup_address(unsigned long addr)
>>>
>>> I think this can be replaced with a call to follow_pte(_mm...).
>>>
>>
>> Ah, of course! That would shorten things
On Thu, 2021-05-13 at 11:42 +0530, Santosh Sivaraj wrote:
> The alignment sizes passed to ndctl in the tests are all hardcoded to 4k,
> the default page size on x86. Change those to the default page size on that
> architecture (sysconf/getconf). No functional changes otherwise.
>
> Signed-off-by:
From: Mike Rapoport
Hi,
@Andrew, this is based on v5.13-rc1, I can rebase whatever way you prefer.
This is an implementation of "secret" mappings backed by a file descriptor.
The file descriptor backing secret memory mappings is created using a
dedicated memfd_secret system call The desired
From: Mike Rapoport
On arm64, set_direct_map_*() functions may return 0 without actually
changing the linear map. This behaviour can be controlled using kernel
parameters, so we need a way to determine at runtime whether calls to
set_direct_map_invalid_noflush() and
From: Mike Rapoport
The underlying implementations of set_direct_map_invalid_noflush() and
set_direct_map_default_noflush() allow updating multiple contiguous pages
at once.
Add numpages parameter to set_direct_map_*_noflush() to expose this
ability with these APIs.
Signed-off-by: Mike
From: Mike Rapoport
It will be used by the upcoming secret memory implementation.
Signed-off-by: Mike Rapoport
Cc: Alexander Viro
Cc: Andy Lutomirski
Cc: Arnd Bergmann
Cc: Borislav Petkov
Cc: Catalin Marinas
Cc: Christopher Lameter
Cc: Dan Williams
Cc: Dave Hansen
Cc: David Hildenbrand
From: Mike Rapoport
ARCH_HAS_SET_DIRECT_MAP and ARCH_HAS_SET_MEMORY configuration options have
no meaning when CONFIG_MMU is disabled and there is no point to enable
them for the nommu case.
Add an explicit dependency on MMU for these options.
Signed-off-by: Mike Rapoport
Reported-by: kernel
From: Mike Rapoport
Introduce "memfd_secret" system call with the ability to create memory
areas visible only in the context of the owning process and not mapped not
only to other processes but in the kernel page tables as well.
The secretmem feature is off by default and the user must
From: Mike Rapoport
It is unsafe to allow saving of secretmem areas to the hibernation
snapshot as they would be visible after the resume and this essentially
will defeat the purpose of secret memory mappings.
Prevent hibernation whenever there are active secret memory users.
Signed-off-by:
From: Mike Rapoport
Wire up memfd_secret system call on architectures that define
ARCH_HAS_SET_DIRECT_MAP, namely arm64, risc-v and x86.
Signed-off-by: Mike Rapoport
Acked-by: Palmer Dabbelt
Acked-by: Arnd Bergmann
Acked-by: Catalin Marinas
Cc: Alexander Viro
Cc: Andy Lutomirski
Cc:
From: Mike Rapoport
The test verifies that file descriptor created with memfd_secret does not
allow read/write operations, that secret memory mappings respect
RLIMIT_MEMLOCK and that remote accesses with process_vm_read() and
ptrace() to the secret memory fail.
Signed-off-by: Mike Rapoport
Cc:
On Thu, 2021-05-13 at 21:47 +0300, Mike Rapoport wrote:
> From: Mike Rapoport
>
> Hi,
>
> @Andrew, this is based on v5.13-rc1, I can rebase whatever way you
> prefer.
>
> This is an implementation of "secret" mappings backed by a file
> descriptor.
>
> The file descriptor backing secret
附件
亲启
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On Wed, Apr 21, 2021 at 12:05 AM Dan Williams wrote:
>
> After seeing some users have subscription management trouble, more spam
> than other Linux development lists, and considering some of the benefits
> of kernel.org hosted lists, nvdimm and persistent memory development is
> moving to
> -Original Message-
> From: Mika Penttilä
> Subject: Re: [PATCH v5 3/7] fsdax: Add dax_iomap_cow_copy() for
> dax_iomap_zero
>
> Hi,
>
> On 11.5.2021 6.09, Shiyang Ruan wrote:
> > Punch hole on a reflinked file needs dax_copy_edge() too. Otherwise,
> > data in not aligned area will be
> -Original Message-
> From: Darrick J. Wong
> Subject: Re: [PATCH v5 1/7] fsdax: Introduce dax_iomap_cow_copy()
>
> On Tue, May 11, 2021 at 11:09:27AM +0800, Shiyang Ruan wrote:
> > In the case where the iomap is a write operation and iomap is not
> > equal to srcmap after iomap_begin,
For NFIT to be available ACPI is a must, so don't fail when nfit modules
are missing on a platform that doesn't support ACPI.
Signed-off-by: Santosh Sivaraj
---
test.h| 2 +-
test/ack-shutdown-count-set.c | 2 +-
test/blk_namespaces.c | 2 +-
test/core.c
This will help in getting the dimm fail tests to run on papr family too.
Also add nvdimm_test compatibility string for recognizing the test module.
Signed-off-by: Santosh Sivaraj
---
ndctl/lib/libndctl.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git
In preparation for enabling tests on non-nfit devices, unify both, already very
similar, functions into one. This will help in adding all attributes needed for
the unit tests. Since the function doesn't fail if some of the dimm attributes
are missing, this will work fine on PAPR platforms though
The alignment sizes passed to ndctl in the tests are all hardcoded to 4k,
the default page size on x86. Change those to the default page size on that
architecture (sysconf/getconf). No functional changes otherwise.
Signed-off-by: Santosh Sivaraj
---
test/dpa-alloc.c| 15 ---
In case performance stats for an nvdimm are not available, reading the
'perf_stats' sysfs file returns an -ENOENT error. A better approach is
to make the 'perf_stats' file entirely invisible to indicate that
performance stats for an nvdimm are unavailable.
So this patch updates
Thanks for looking into this patch Dan,
Dan Williams writes:
> On Fri, May 7, 2021 at 4:40 AM Vaibhav Jain wrote:
>>
>> In case performance stats for an nvdimm are not available, reading the
>> 'perf_stats' sysfs file returns an -ENOENT error. A better approach is
>> to make the 'perf_stats'
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