[CC linux-mm for inclusion in -mm tree]
In order to reduce copy/paste of functions across architectures and then
make riscv hugetlb port (and future ports) simpler and smaller, this
patchset intends to factorize the numerous hugetlb primitives that are
defined across all the architectures.
arm, ia64, sh, x86 architectures use the
same version of huge_ptep_get_and_clear, so move this generic
implementation into asm-generic/hugetlb.h.
Signed-off-by: Alexandre Ghiti
Reviewed-by: Mike Kravetz
---
arch/arm/include/asm/hugetlb-3level.h | 6 --
arch/arm64/include/asm/hugetlb.h
arm, arm64, powerpc, sparc, x86 architectures use the same version of
prepare_hugepage_range, so move this generic implementation into
asm-generic/hugetlb.h.
Signed-off-by: Alexandre Ghiti
Reviewed-by: Mike Kravetz
---
arch/arm/include/asm/hugetlb.h | 11 ---
On 07/30/2018 03:00 PM, Christoph Hellwig wrote:
>>> +
>>> + if (xen_domain())
>>> + goto skip_override;
>>> +
>>> + if (virtio_has_iommu_quirk(dev))
>>> + set_dma_ops(dev->dev.parent, _direct_dma_ops);
>>> +
>>> + skip_override:
>>> +
>>
>> I prefer normal if scoping as
Tyrel Datwyler writes:
> On 07/29/2018 06:11 AM, Michael Bringmann wrote:
>> During LPAR migration, the content of the device tree/sysfs may
>> be updated including deletion and replacement of nodes in the
>> tree. When nodes are added to the internal node structures, they
>> are appended in
arm, ia64, mips, powerpc, sh, x86 architectures use the
same version of set_huge_pte_at, so move this generic
implementation into asm-generic/hugetlb.h.
Signed-off-by: Alexandre Ghiti
Reviewed-by: Mike Kravetz
---
arch/arm/include/asm/hugetlb-3level.h | 6 --
arm, arm64, ia64, parisc, powerpc, sh, sparc, x86 architectures
use the same version of huge_pte_none, so move this generic
implementation into asm-generic/hugetlb.h.
Signed-off-by: Alexandre Ghiti
Reviewed-by: Mike Kravetz
---
arch/arm/include/asm/hugetlb.h | 5 -
arm, ia64, mips, sh, x86 architectures use the same version
of huge_ptep_set_wrprotect, so move this generic implementation into
asm-generic/hugetlb.h.
Note: powerpc uses twice for book3s/32 and nohash/32 the same version as
the above architectures, but the modification was not straightforward
and
arm, arm64, mips, parisc, sh, x86 architectures use the
same version of hugetlb_free_pgd_range, so move this generic
implementation into asm-generic/hugetlb.h.
Signed-off-by: Alexandre Ghiti
Reviewed-by: Mike Kravetz
---
arch/arm/include/asm/hugetlb.h | 9 -
asm-generic/hugetlb.h proposes generic implementations of hugetlb
related functions: use __HAVE_ARCH_HUGE* defines in order to make arch
specific implementations of hugetlb functions consistent with pgtable.h
scheme.
Signed-off-by: Alexandre Ghiti
Reviewed-by: Mike Kravetz
---
arm, arm64, ia64, mips, parisc, powerpc, sh, sparc, x86
architectures use the same version of huge_pte_wrprotect, so move
this generic implementation into asm-generic/hugetlb.h.
Signed-off-by: Alexandre Ghiti
Reviewed-by: Mike Kravetz
---
arch/arm/include/asm/hugetlb.h | 5 -
Hi Rob/Frank,
I think we might have a problem with the phandle_cache not interacting
well with of_detach_node():
Michael Bringmann writes:
> See below.
>
> On 07/30/2018 01:31 AM, Michael Ellerman wrote:
>> Michael Bringmann writes:
>>
>>> During LPAR migration, the content of the device
Darren Stevens writes:
> Pasemi arch code finds the root of the PCI-e bus by searching the
> device-tree for a node called 'pxp'. But the root bus has a
> compatible property of 'pasemi,rootbus' so search for that instead.
>
> Signed-off-by: Darren Stevens
> ---
>
> This works on the Amigaone
The menu entry is now defined in the rapidio subtree.
Platforms with a PCI bus will be offered the RapidIO menu since they may
be want support for a RapidIO PCI device. Platforms without a PCI bus
that might include a RapidIO IP block will need to "select HAS_RAPIDIO"
in the
Isolate the logic of printing unhandled signals out of _exception_pkey().
No functional change, only code rearrangement.
Signed-off-by: Murilo Opsfelder Araujo
---
arch/powerpc/kernel/traps.c | 26 --
1 file changed, 16 insertions(+), 10 deletions(-)
diff --git
Crash memory ranges is an array of memory ranges of the crashing kernel
to be exported as a dump via /proc/vmcore file. The size of the array
is set based on INIT_MEMBLOCK_REGIONS, which works alright in most cases
where memblock memory regions count is less than INIT_MEMBLOCK_REGIONS
value. But
Acked-by: Alexandre Bounine
On 2018-07-30 06:50 PM, Alexei Colin wrote:
The top-level Kconfig entry for RapidIO subsystem is currently
duplicated in several architecture-specific Kconfig files. This set of
patches does two things:
1. Move the Kconfig menu definition into the RapidIO subsystem
This adds VMA address in the message printed for unhandled signals,
similarly to what other architectures, like x86, print.
Before this patch, a page fault looked like:
pandafault[61470]: unhandled signal 11 at 17d0 nip 161c lr
7fff8d185100 code 2
After this patch, a page fault looks
Michael Ellerman writes:
> Darren Stevens writes:
>
>> Pasemi arch code finds the root of the PCI-e bus by searching the
>> device-tree for a node called 'pxp'. But the root bus has a
>> compatible property of 'pasemi,rootbus' so search for that instead.
>>
>> Signed-off-by: Darren Stevens
>>
Resending the patchset from prior submission:
https://lkml.org/lkml/2018/7/30/911
The only change are the Cc tags in all patches now include the mailing
lists for all affected architectures, and patch 1/6 (which adds the menu
item to RapdidIO subsystem Kconfig) is CCed to all maintainers who are
Hi, everyone.
This series was inspired by the need to modernize and display more
informative messages about unhandled signals.
The "unhandled signal NN" is not very informative. We thought it would be
helpful adding a human-readable message describing what the signal number
means, printing the
Use %lx format to print registers. This avoids having two different
formats and avoids checking for MSR_64BIT, improving readability of the
function.
Even though we could have used %px, which is functionally equivalent to %lx
as per Documentation/core-api/printk-formats.rst, it is not
Call show_instructions() in arch/powerpc/kernel/traps.c to dump
instructions at faulty location, useful to debugging.
Before this patch, an unhandled signal message looked like:
pandafault[10524]: segfault (11) at 17d0 nip 161c lr 7fffbd295100
code 2 in pandafault[1000+1]
On 07/31/2018 12:06 PM, Michael Ellerman wrote:
Alexandre Ghiti writes:
arm, ia64, mips, sh, x86 architectures use the same version
of huge_ptep_set_wrprotect, so move this generic implementation into
asm-generic/hugetlb.h.
Note: powerpc uses twice for book3s/32 and nohash/32 the same
It turns out cxl actually uses it. So for now skip this patch,
although random code in drivers messing with dma ops will need to
be sorted out sooner or later.
On Tue, 31 Jul 2018 14:03:35 +1000
Alexey Kardashevskiy wrote:
> On 31/07/2018 02:29, Alex Williamson wrote:
> > On Mon, 30 Jul 2018 18:58:49 +1000
> > Alexey Kardashevskiy wrote:
> >> After some local discussions, it was pointed out that force disabling
> >> nvlinks won't bring us much as for
The menu entry is now defined in the rapidio subtree.
Cc: Andrew Morton
Cc: Russell King
Cc: John Paul Walters
Cc: x...@kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-m...@linux-mips.org
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Alexei
Modify the logic of show_signal_msg() to return early, if possible.
Replace printk_ratelimited() by printk() and a default rate limit burst to
limit displaying unhandled signals messages.
Mainly reason of this change is to improve readability of the function.
The conditions to display the message
Remove "Instruction dump:" line by adding a prefix to display current->comm
and current->pid, along with the instructions dump.
The prefix can serve as a glue that links the instructions dump to its
originator, allowing messages to be interleaved in the logs.
Before this patch, a page fault
The alignment_handler is documented to only work on Power8/Power9, but
we can make it run on older CPUs by guarding more of the tests with
feature checks.
Signed-off-by: Michael Ellerman
---
.../powerpc/alignment/alignment_handler.c | 67 +++---
1 file changed, 59
Current tm-unavailable test runs for a long period (>120 seconds), and if it is
interrupted, as pressing CRTL-C (SIGINT), the foreground process (harness) dies
but the child process and threads continue to execute (with PPID = 1 now).
In this case, you'd think the test is gone, but there are two
Platforms with a PCI bus will be offered the RapidIO menu since they may
be want support for a RapidIO PCI device. Platforms without a PCI bus
that might include a RapidIO IP block will need to "select HAS_RAPIDIO"
in the platform-/machine-specific "config ARCH_*" Kconfig entry.
Tested that
Move show_instructions() declaration to
arch/powerpc/include/asm/stacktrace.h and include asm/stracktrace.h in
arch/powerpc/kernel/process.c, which contains the implementation.
This allows show_instructions() to be called on, for example,
show_signal_msg().
Signed-off-by: Murilo Opsfelder Araujo
This adds a human-readable name in the unhandled signal message.
Before this patch, a page fault looked like:
pandafault[6303]: unhandled signal 11 at 17d0 nip 161c lr
7fff93c55100 code 2 in pandafault[1000+1]
After this patch, a page fault looks like:
pandafault[6352]:
Bjorn Helgaas writes:
> On Thu, Jul 19, 2018 at 02:18:09PM +1000, Benjamin Herrenschmidt wrote:
>> On Wed, 2018-07-18 at 18:29 -0500, Bjorn Helgaas wrote:
>> > [+cc Paul, Michael, linuxppc-dev]
>> >
>>
>>/...
>>
>> > > Debugging revealed a race condition between pcie core driver
>> > >
Nicholas Piggin writes:
> On Fri, 27 Jul 2018 08:38:35 -0700
> Matthew Wilcox wrote:
>> On Sat, Jul 28, 2018 at 12:29:06AM +1000, Nicholas Piggin wrote:
>> > On Fri, 27 Jul 2018 06:41:56 -0700
>> > Matthew Wilcox wrote:
>> > > On Fri, Jul 27, 2018 at 09:48:17PM +1000, Nicholas Piggin wrote:
The menu entry is now defined in the rapidio subtree. Also, re-order
the bus menu so tha the platform-specific RapidIO controller appears
after the entry for the RapidIO subsystem.
Platforms with a PCI bus will be offered the RapidIO menu since they may
be want support for a RapidIO PCI device.
Christoph Hellwig writes:
> kernel/dma/Kconfig already defines NEED_DMA_MAP_STATE, just select it
> from PPC64 and NOT_COHERENT_CACHE instead.
>
> Signed-off-by: Christoph Hellwig
> ---
> arch/powerpc/Kconfig | 3 ---
> arch/powerpc/platforms/Kconfig.cputype | 2 ++
> 2 files
On Mon, Jul 30, 2018 at 09:38:42AM +0200, Christoph Hellwig wrote:
> There is nothing arch specific about PCI or dma-debug, so move this
> call to common code just after registering the bus type.
>
> Signed-off-by: Christoph Hellwig
Applied with acks from Thomas and Michael to pci/misc for
Hi Richard,
> -Original Message-
> From: Richard Cochran [mailto:richardcoch...@gmail.com]
> Sent: Monday, July 30, 2018 10:31 PM
> To: Y.b. Lu
> Cc: net...@vger.kernel.org; Madalin-cristian Bucur
> ; Rob Herring ; Shawn Guo
> ; David S . Miller ;
> devicet...@vger.kernel.org;
On Thu, 2018-07-05 at 11:40:21 UTC, Akshay Adiga wrote:
> Device-tree parsing happens twice, once while deciding idle state to be
> used for hotplug and once during cpuidle init. Hence, parsing the device
> tree and caching it will reduce code duplication. Parsing code has been
> moved to
On Thu, 2018-07-05 at 16:24:51 UTC, Christophe Leroy wrote:
> page.h doesn't need kdump.h
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/db0a2b633da4216b767d7aed95ffe3
cheers
On Thu, 2018-07-05 at 16:24:55 UTC, Christophe Leroy wrote:
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/36a7eeaff7d06cef253c8df6dfe363
cheers
On Thu, 2018-07-05 at 16:24:59 UTC, Christophe Leroy wrote:
> Only include linux/stringify.h is files using __stringify()
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/5c35a02c545a7bbe77f3a1ae337d9e
cheers
On Thu, 2018-07-05 at 16:25:01 UTC, Christophe Leroy wrote:
> files not using feature fixup don't need asm/feature-fixups.h
> files using feature fixup need asm/feature-fixups.h
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
On Thu, 2018-07-05 at 16:25:13 UTC, Christophe Leroy wrote:
> mmu-44x.h doesn't need asm/page.h if PAGE_SHIFT are replaced by
> CONFIG_PPC_XX_PAGES
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/7bc396958cafba126078ad92480a42
cheers
On Thu, 2018-07-19 at 14:33:16 UTC, Michael Ellerman wrote:
> Paul Menzel reported that kmemleak was producing reports such as:
>
> unreferenced object 0xc000f8b8 (size 16384):
> comm "init", pid 1, jiffies 4294937416 (age 312.240s)
> hex dump (first 32 bytes):
> 00 00 00
Hi David,
> -Original Message-
> From: David Miller [mailto:da...@davemloft.net]
> Sent: Tuesday, July 31, 2018 12:26 AM
> To: Y.b. Lu
> Cc: net...@vger.kernel.org; Madalin-cristian Bucur
> ; richardcoch...@gmail.com; robh...@kernel.org;
> shawn...@kernel.org; devicet...@vger.kernel.org;
On Mon, 2018-07-02 at 08:21:18 UTC, Finn Thain wrote:
> The pmu_init() function has the __init qualifier, but the ops struct
> that holds a pointer to it does not. This causes a build warning.
> The driver works fine because the pointer is only dereferenced early.
>
> The function is so small
On Thu, 2018-07-05 at 16:25:03 UTC, Christophe Leroy wrote:
> Files not using fixmap consts or functions don't need asm/fixmap.h
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/e8cb7a55eb8dcf65838d0911dc7ba0
cheers
On Thu, 2018-07-05 at 16:25:09 UTC, Christophe Leroy wrote:
> Remove superflous includes and add missing ones
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/62b8426578c414c918468ab4cc7517
cheers
On Thu, 2018-07-05 at 16:25:07 UTC, Christophe Leroy wrote:
> PPC_PIN_SIZE is specific to the 44x and is defined in mmu.h
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/6b622669119e20a53a1983cd41115e
cheers
On Thu, 2018-07-05 at 16:25:19 UTC, Christophe Leroy wrote:
> asm/tlbflush.h is only needed for:
> - using functions xxx_flush_tlb_xxx()
> - using MMU_NO_CONTEXT
> - including asm-generic/pgtable.h
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
On Thu, 2018-07-26 at 12:52:50 UTC, Alexey Spirkov wrote:
> mmu_init_secondary function called at initialization sequence
> but it misses __init annotation. As result modpost warning is generated.
> Some building systems sensitive to such kind of warnings.
>
> Signed-off-by: Alexey Spirkov
On Tue, 2018-07-24 at 09:13:08 UTC, Shilpasri G Bhat wrote:
> Adds support to enable/disable a sensor group at runtime. This
> can be used to select the sensor groups that needs to be copied to
> main memory by OCC. Sensor groups like power, temperature, current,
> voltage, frequency, utilization
On Thu, 2018-07-05 at 16:24:53 UTC, Christophe Leroy wrote:
> Files not using cpu_has_feature() don't need cpu_has_feature.h
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/8c58259bba43084eb5876aeefa574e
cheers
On Thu, 2018-07-05 at 16:24:57 UTC, Christophe Leroy wrote:
> This patch moves ASM_CONST() and stringify_in_c() into
> dedicated asm-const.h, then cleans all related inclusions.
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
On Thu, 2018-07-05 at 16:25:05 UTC, Christophe Leroy wrote:
> set_breakpoint() is only used in process.c so make it static
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/b5ac51d747122f8858bdcb3fc7a5c7
cheers
On Thu, 2018-07-05 at 16:25:11 UTC, Christophe Leroy wrote:
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/0c295d0e9c9f7a592f230bbcf51655
cheers
On Thu, 2018-07-05 at 16:25:21 UTC, Christophe Leroy wrote:
> Split asm/tlbflush.h into:
> asm/nohash/tlbflush.h
> asm/book3s/32/tlbflush.h
> asm/book3s/64/tlbflush.h (already existing)
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
On Mon, 2018-07-30 at 01:59:14 UTC, Sam Bobroff wrote:
> EEH recovery currently fails on pSeries for some IOV capable PCI
> devices, if CONFIG_PCI_IOV is on and the hypervisor doesn't provide
> certain device tree properties for the device. (Found on an IOV
> capable device using the ipr driver.)
Currently the alignment_handler test prints "Can't open /dev/fb0"
about 80 times per run, which is a little annoying.
Refactor it to check earlier if it can open /dev/fb0 and skip if not,
this results in each test printing something like:
test: test_alignment_handler_vsx_206
tags:
With the optimizations for TLB invalidation from commit 0cef77c7798a
("powerpc/64s/radix: flush remote CPUs out of single-threaded
mm_cpumask"), the scope of a TLBI (global vs. local) can now be
influenced by the value of the 'copros' counter of the memory context.
When calling
The top-level Kconfig entry for RapidIO subsystem is currently
duplicated in several architecture-specific Kconfigs. This
commit re-defines it in the driver subtree, and subsequent
commits, one per architecture, will remove the duplicated
definitions from respective per-architecture Kconfigs.
Cc:
Platforms with a PCI bus will be offered the RapidIO menu since they may
be want support for a RapidIO PCI device. Platforms without a PCI bus
that might include a RapidIO IP block will need to "select HAS_RAPIDIO"
in the platform-/machine-specific "config ARCH_*" Kconfig entry.
Tested that
On 07/30/2018 11:42 PM, Michael Ellerman wrote:
> Tyrel Datwyler writes:
>> On 07/29/2018 06:11 AM, Michael Bringmann wrote:
>>> During LPAR migration, the content of the device tree/sysfs may
>>> be updated including deletion and replacement of nodes in the
>>> tree. When nodes are added to the
On 07/31/18 07:17, Rob Herring wrote:
> On Tue, Jul 31, 2018 at 12:34 AM Michael Ellerman wrote:
>>
>> Hi Rob/Frank,
>>
>> I think we might have a problem with the phandle_cache not interacting
>> well with of_detach_node():
>
> Probably needs a similar fix as this commit did for overlays:
>
>
On 07/31/18 12:18, Frank Rowand wrote:
> On 07/31/18 07:17, Rob Herring wrote:
>> On Tue, Jul 31, 2018 at 12:34 AM Michael Ellerman
>> wrote:
>>>
>>> Hi Rob/Frank,
>>>
>>> I think we might have a problem with the phandle_cache not interacting
>>> well with of_detach_node():
>>
>> Probably needs
Just for info: I tested it on my Nemo board today and it works.
-- Christian
On 31 July 2018 at 2:04PM, Michael Ellerman wrote:
Michael Ellerman writes:
Darren Stevens writes:
Pasemi arch code finds the root of the PCI-e bus by searching the
device-tree for a node called 'pxp'. But the
For the thread associated with this patch set, a review of a previous
patch for ARM posted last Tuesday on this subject asked a series of
questions about the PCI-nature of this. The review has not been
responded to.
If it is inappropriate to offer RapidIO for any architecture that
happens to has
On 07/31/2018 02:18 PM, Frank Rowand wrote:
> On 07/31/18 07:17, Rob Herring wrote:
>> On Tue, Jul 31, 2018 at 12:34 AM Michael Ellerman
>> wrote:
>>>
>>> Hi Rob/Frank,
>>>
>>> I think we might have a problem with the phandle_cache not interacting
>>> well with of_detach_node():
>>
>> Probably
On 2018-07-31 11:59 AM, Russell King - ARM Linux wrote:
For the thread associated with this patch set, a review of a previous
patch for ARM posted last Tuesday on this subject asked a series of
questions about the PCI-nature of this. The review has not been
responded to.
We are dealing
On Mon, Jul 30, 2018 at 04:26:32PM +0300, Michael S. Tsirkin wrote:
> Real hardware would reuse parts of the interface but by necessity it
> needs to behave slightly differently on some platforms. However for
> some platforms (such as x86) a PV virtio driver will by luck work with a
> PCI device
I applied your suggestion with a couple of modifications,
and it looks to have worked for the first 2 migration events.
I am not seeing the errors from repeated migrations. The
revised patch tested is,
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 466e3c8..8bf64e5 100644
---
On Tue, Jul 31, 2018 at 10:29:49AM -0400, Alexei Colin wrote:
> The top-level Kconfig entry for RapidIO subsystem is currently
> duplicated in several architecture-specific Kconfigs. This
> commit re-defines it in the driver subtree, and subsequent
> commits, one per architecture, will remove the
Reimplement Book3S idle code to C, in the powernv platform code.
Assembly stubs are used to save and restore the stack frame and
non-volatile GPRs before going to idle, but these are small and
mostly agnostic to microarchitecture implementation details.
The optimisation where EC=ESL=0 idle modes
On Tue, Jul 31, 2018 at 12:34 AM Michael Ellerman wrote:
>
> Hi Rob/Frank,
>
> I think we might have a problem with the phandle_cache not interacting
> well with of_detach_node():
Probably needs a similar fix as this commit did for overlays:
commit b9952b5218added5577e4a3443969bc20884cea9
Modify show_instructions() not to call __kernel_text_address(), allowing
userspace instruction dump. probe_kernel_address(), which returns -EFAULT
if something goes wrong, is still being called.
Signed-off-by: Murilo Opsfelder Araujo
---
arch/powerpc/kernel/process.c | 3 +--
1 file changed, 1
Hi!
On 31/07/18 16:29, Alexei Colin wrote:
> The top-level Kconfig entry for RapidIO subsystem is currently
> duplicated in several architecture-specific Kconfigs. This
> commit re-defines it in the driver subtree, and subsequent
> commits, one per architecture, will remove the duplicated
>
On Tue, Jul 31, 2018 at 10:29:53AM -0400, Alexei Colin wrote:
> Platforms with a PCI bus will be offered the RapidIO menu since they may
> be want support for a RapidIO PCI device. Platforms without a PCI bus
> that might include a RapidIO IP block will need to "select HAS_RAPIDIO"
> in the
Acked-by: Alexandre Bounine
On 2018-07-31 10:29 AM, Alexei Colin wrote:
Resending the patchset from prior submission:
https://lkml.org/lkml/2018/7/30/911
The only change are the Cc tags in all patches now include the mailing
lists for all affected architectures, and patch 1/6 (which adds the
Test tm-tmspr might exit before all threads stop executing, because it just
waits for the very last thread to join before proceeding/exiting.
This patch makes sure that all threads that were created will join before
proceeding/exiting.
This patch also guarantees that the amount of threads being
On Tue, Jul 24, 2018 at 01:13:25PM +0200, Arnd Bergmann wrote:
> Almost all files in the kernel are either plain text or UTF-8
> encoded. A couple however are ISO_8859-1, usually just a few
> characters in a C comments, for historic reasons.
>
> This converts them all to UTF-8 for consistency.
>
On Tue, 2018-07-31 at 10:30 -0700, Christoph Hellwig wrote:
> > However the question people raise is that DMA API is already full of
> > arch-specific tricks the likes of which are outlined in your post linked
> > above. How is this one much worse?
>
> None of these warts is visible to the
Use the standard WARN_ON instead.
If a small kernel is desired, WARN_ON can be disabled globally.
Also remove SSB_DEBUG. Besides WARN_ON it only adds a tiny debug check.
Include this check unconditionally.
Signed-off-by: Michael Buesch
---
CC-ing Mips and PPC maintainers due to changes in
On Tue, 31 Jul 2018 06:01:44 +
Alexandre Ghiti wrote:
> [CC linux-mm for inclusion in -mm tree]
>
> In order to reduce copy/paste of functions across architectures and then
> make riscv hugetlb port (and future ports) simpler and smaller, this
> patchset intends to factorize the numerous
On Fri, 27 Jul 2018 15:51:30 +0200
Laurent Dufour wrote:
> [Resending so everyone is getting the cover letter]
>
> On very large system we could see soft lockup fired when a process is exiting
>
> watchdog: BUG: soft lockup - CPU#851 stuck for 21s! [forkoff:215523]
> Modules linked in:
On Thu, 26 Jul 2018 22:42:44 +1000
Michael Ellerman wrote:
> Because rfi_flush_fallback runs immediately before the return to
> userspace it currently runs with the user r1 (stack pointer). This
> means if we oops in there we will report a bad kernel stack pointer in
> the exception entry path,
On Tue, 31 Jul 2018 21:42:22 +1000
Michael Ellerman wrote:
> Nicholas Piggin writes:
> > On Fri, 27 Jul 2018 08:38:35 -0700
> > Matthew Wilcox wrote:
> >> On Sat, Jul 28, 2018 at 12:29:06AM +1000, Nicholas Piggin wrote:
> >> > On Fri, 27 Jul 2018 06:41:56 -0700
> >> > Matthew Wilcox
On 31/07/18 22:08, Michael Ellerman wrote:
The alignment_handler is documented to only work on Power8/Power9, but
we can make it run on older CPUs by guarding more of the tests with
feature checks.
Signed-off-by: Michael Ellerman
Looks good to me.
Reviewed-by: Andrew Donnellan
---
On Tue, 31 Jul 2018 15:24:52 +0200
Frederic Barrat wrote:
> With the optimizations for TLB invalidation from commit 0cef77c7798a
> ("powerpc/64s/radix: flush remote CPUs out of single-threaded
> mm_cpumask"), the scope of a TLBI (global vs. local) can now be
> influenced by the value of the
On Thu, 26 Jul 2018 23:01:51 +1000
Michael Ellerman wrote:
> If we take an SLB miss while MSR[RI]=0 we can't recover and have to
> oops. Currently this is reported by faking up a 0x4100 exception, eg:
>
> Unrecoverable exception 4100 at 0
> Oops: Unrecoverable exception, sig: 6 [#1]
> ...
On 26/07/18 04:11, John Allen wrote:
> Hi All,
>
> Under heavy stress and constant memory hot add/remove, I have observed
> the following loop to occasionally loop infinitely:
>
> mm/memory_hotplug.c:__offline_pages
>
> repeat:
> /* start memory hot removal */
> ret = -EINTR;
>
On Thu, 26 Jul 2018 23:07:01 +1000
Michael Ellerman wrote:
> This finally annoyed me enough to do something about it, I foolishly started
> pulling the string and now here I am.
>
> I think the end result is sufficiently more readable to justify the churn. I
> particularly like that we now have
On Mon, Jul 30, 2018 at 04:17:13PM -0500, Bjorn Helgaas wrote:
> [+cc Joerg]
>
> On Mon, Jul 30, 2018 at 09:38:42AM +0200, Christoph Hellwig wrote:
> > There is nothing arch specific about PCI or dma-debug, so move this
> > call to common code just after registering the bus type.
>
> I assume
On Mon, Jul 30, 2018 at 04:17:13PM -0500, Bjorn Helgaas wrote:
> [+cc Joerg]
>
> On Mon, Jul 30, 2018 at 09:38:42AM +0200, Christoph Hellwig wrote:
> > There is nothing arch specific about PCI or dma-debug, so move this
> > call to common code just after registering the bus type.
>
> I assume
On 07/30/2018 02:55 PM, Christoph Hellwig wrote:
>> +const struct dma_map_ops virtio_direct_dma_ops;
>
> This belongs into a header if it is non-static. If you only
> use it in this file anyway please mark it static and avoid a forward
> declaration.
Sure, will make it static, move the
arm, x86 architectures use the same version of
huge_ptep_clear_flush, so move this generic implementation into
asm-generic/hugetlb.h.
Signed-off-by: Alexandre Ghiti
Reviewed-by: Mike Kravetz
---
arch/arm/include/asm/hugetlb-3level.h | 6 --
arch/arm64/include/asm/hugetlb.h | 1 +
arm, ia64, sh, x86 architectures use the same version
of huge_ptep_set_access_flags, so move this generic implementation
into asm-generic/hugetlb.h.
Signed-off-by: Alexandre Ghiti
Reviewed-by: Mike Kravetz
---
arch/arm/include/asm/hugetlb-3level.h | 7 ---
arch/arm64/include/asm/hugetlb.h
ia64, mips, parisc, powerpc, sh, sparc, x86 architectures use the
same version of huge_ptep_get, so move this generic implementation into
asm-generic/hugetlb.h.
Signed-off-by: Alexandre Ghiti
Reviewed-by: Mike Kravetz
---
arch/arm/include/asm/hugetlb-3level.h | 1 +
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