Wrap the futex operations in KHRAP locks and unlocks.
Signed-off-by: Russell Currey
---
arch/powerpc/include/asm/futex.h | 6 ++
1 file changed, 6 insertions(+)
diff --git a/arch/powerpc/include/asm/futex.h b/arch/powerpc/include/asm/futex.h
index 94542776a62d..e0f4227cfd32 100644
--- a/arc
KHRAP is similar to SMAP on x86 platforms, so implement support for
the same kernel parameter.
Signed-off-by: Russell Currey
---
arch/powerpc/mm/init_64.c | 15 +++
1 file changed, 15 insertions(+)
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 7a9886f98b0c
Kernel Hypervisor Restricted Access Prevention (KHRAP) utilises a feature
of the Radix MMU which disallows read and write access to userspace
addresses. By utilising this, the kernel is prevented from accessing
user data from outside of trusted paths that perform proper safety checks,
such as copy
Document the devicetree bindings for NXP Layerscape qDMA controller
which could be found on NXP QorIQ Layerscape SoCs.
Signed-off-by: Wen He
Signed-off-by: Peng Ma
Reviewed-by: Rob Herring
---
change in v9:
- add required properties such as interrupts,block-number,block-offset
e
add the qDMA device tree nodes for LS1046A devices.
Signed-off-by: Wen He
Signed-off-by: Peng Ma
---
change in v9:
- add interrupts for each virtual block
- add block-number
- add block-offset
arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi | 21 +
add the qDMA device tree nodes for LS1043A devices.
Signed-off-by: Wen He
Signed-off-by: Peng Ma
---
change in v9:
- add interrupts for each virtual block
- add block-number
- add block-offset
arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi | 22 ++
NXP Queue DMA controller(qDMA) on Layerscape SoCs supports channel
virtuallization by allowing DMA jobs to be enqueued into different
command queues.
Note that this module depends on NXP DPAA.
Signed-off-by: Wen He
Signed-off-by: Jiaheng Fan
Signed-off-by: Peng Ma
---
change in v9:
- a
add the qDMA device tree nodes for LS1021A devices.
Signed-off-by: Wen He
Signed-off-by: Peng Ma
---
change in v9:
- add interrupts for each virtual block
- add block-number
- add block-offset
arch/arm/boot/dts/ls1021a.dtsi | 20
1 files changed,
This patch add the macro FSL_DMA_IN/OUT implement for ARM platform.
Signed-off-by: Wen He
Signed-off-by: Peng Ma
---
change in v9:
- rewrite function fsl_ioread64 and fsl_ioread64be to make a better read
drivers/dma/fsldma.h | 59 +
1 f
From: Wen He
This patch implement a standard macro call functions is
used to NXP dma drivers.
Signed-off-by: Wen He
Signed-off-by: Peng Ma
---
change in v9:
- no
drivers/dma/fsldma.c | 16
drivers/dma/fsldma.h |4 ++--
2 files changed, 10 insertions(+), 10 dele
On 10/17/2018 12:59 AM, Michael Ellerman wrote:
Christophe Leroy writes:
Get rid of platform specific _PAGE_ in powerpc common code and
use helpers instead.
mm/dump_linuxpagetables.c will be handled separately
Reviewed-by: Aneesh Kumar K.V
Signed-off-by: Christophe Leroy
---
arch/
On Wed, Oct 17, 2018 at 02:34:32PM +1100, Alexey Kardashevskiy wrote:
>
>
> On 17/10/2018 12:00, David Gibson wrote:
> > On Mon, Oct 15, 2018 at 08:24:15PM +1100, Alexey Kardashevskiy wrote:
> >> Since we are going to have 2 different preregistering helpers, let's
> >> make it clear that mm_iommu
On 17/10/2018 12:00, David Gibson wrote:
> On Mon, Oct 15, 2018 at 08:24:15PM +1100, Alexey Kardashevskiy wrote:
>> Since we are going to have 2 different preregistering helpers, let's
>> make it clear that mm_iommu_new() is only for the normal (i.e. not device)
>> memory and for existing areas
On 10/16/18 02:47, Michael Ellerman wrote:
> frowand.l...@gmail.com writes:
>
>> From: Frank Rowand
>>
>> Add checks to (1) overlay apply process and (2) memory freeing
>> triggered by overlay release. The checks are intended to detect
>> possible memory leaks and invalid overlays.
>>
>> The che
On Mon, Oct 15, 2018 at 08:24:15PM +1100, Alexey Kardashevskiy wrote:
> Since we are going to have 2 different preregistering helpers, let's
> make it clear that mm_iommu_new() is only for the normal (i.e. not device)
> memory and for existing areas mm_iommu_get() should be used instead.
>
> Signe
On Mon, Oct 15, 2018 at 08:24:13PM +1100, Alexey Kardashevskiy wrote:
> Normally mm_iommu_get() is supposed to add a reference and
> mm_iommu_put() to remove it. However historically mm_iommu_find() does
> the referencing and mm_iommu_get() is doing allocation and referencing.
>
> This is step 1 t
On Mon, Oct 15, 2018 at 08:24:14PM +1100, Alexey Kardashevskiy wrote:
> We are going to add another helper to preregister device memory so
> instead of having mm_iommu_new() which pre-registers the normal memory
> and references the region, we need separate helpers for pre-registerign
> and referen
On 17/10/2018 06:08, Alex Williamson wrote:
> On Mon, 15 Oct 2018 20:42:33 +1100
> Alexey Kardashevskiy wrote:
>
>> POWER9 Witherspoon machines come with 4 or 6 V100 GPUs which are not
>> pluggable PCIe devices but implement PCIe links for config space and MMIO.
>> In addition to that the GPUs
Christophe Leroy writes:
> Get rid of platform specific _PAGE_ in powerpc common code and
> use helpers instead.
>
> mm/dump_linuxpagetables.c will be handled separately
>
> Reviewed-by: Aneesh Kumar K.V
> Signed-off-by: Christophe Leroy
> ---
> arch/powerpc/include/asm/book3s/32/pgtable.h
Joakim Tjernlund writes:
> On Tue, 2018-10-16 at 12:33 +, Christophe Leroy wrote:
>>
>>
>> GCC 4.6 is the minimum supported now.
>
> Ouch, from kernel 4.19 or earlier even ?
Yes.
Though to be honest we haven't been testing much with compilers older
than that for several years.
If you car
Michael Bringmann writes:
> On 10/16/2018 02:57 PM, Tyrel Datwyler wrote:
>> On 10/15/2018 05:39 PM, Michael Ellerman wrote:
>>> Michael Bringmann writes:
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c
b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 2b796da..
Tyrel Datwyler writes:
> On 10/15/2018 05:39 PM, Michael Ellerman wrote:
>> Michael Bringmann writes:
>>> diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c
>>> b/arch/powerpc/platforms/pseries/hotplug-memory.c
>>> index 2b796da..9c76345 100644
>>> --- a/arch/powerpc/platforms/pseries/
On Tue, 2018-10-16 at 20:58 +0300, Raz wrote:
> Section 5.7.3
> "Storage accesses in real, hypervisor real, and virtual real
> addressing modes are performed in a manner that depends on the
> contents of MSR HV , VPM, VRMASD, HRMOR, RMLS, RMOR (see Chapter 2),
> bit 0 of the
> effective address (EA
Quoting Vabhav Sharma (2018-10-14 10:08:00)
> From: Yogesh Gaur
>
> Increase size of cmux_to_group array, to accomdate entry of
> -1 termination.
>
> Added -1, terminated, entry for 4080_cmux_grpX.
>
> Signed-off-by: Yogesh Gaur
> Signed-off-by: Vabhav Sharma
> ---
Acked-by: Stephen Boyd
On Tue, Oct 16, 2018 at 07:05:16PM +0200, Greg Kroah-Hartman wrote:
> 4.18-stable review patch. If anyone has any objections, please let me know.
>
> --
>
> From: Nicholas Piggin
>
> [ Upstream commit 71d29f43b6332badc5598c656616a62575e83342 ]
If you take 71d29f43b633 then you
On 10/16/2018 02:57 PM, Tyrel Datwyler wrote:
> On 10/15/2018 05:39 PM, Michael Ellerman wrote:
>> Michael Bringmann writes:
>>> diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c
>>> b/arch/powerpc/platforms/pseries/hotplug-memory.c
>>> index 2b796da..9c76345 100644
>>> --- a/arch/powe
Hi Mike,
On Tue, 16 Oct 2018 16:36:56 +0300 Mike Rapoport wrote:
>
> After some more grepping and spatching I've found these:
>
> From 8b014bae53a78ab747dbb76b9aff7df4cefcb604 Mon Sep 17 00:00:00 2001
> From: Mike Rapoport
> Date: Tue, 16 Oct 2018 16:03:00 +0300
> Subject: [PATCH] memblock: fix
Currently, we expect to be able to reach ftrace_caller() from all
ftrace-enabled functions through a single relative branch. With large
kernel configs, we see functions outside of 32MB of ftrace_caller()
causing ftrace_init() to bail.
In such configurations, gcc/ld emits two types of trampolines f
On Tue, Oct 16, 2018 at 01:29:52PM +0200, Vlastimil Babka wrote:
> On 10/16/18 12:33 AM, Joel Fernandes wrote:
> > On Mon, Oct 15, 2018 at 02:42:09AM -0700, Christoph Hellwig wrote:
> >> On Fri, Oct 12, 2018 at 06:31:58PM -0700, Joel Fernandes (Google) wrote:
> >>> Android needs to mremap large reg
On Mon, Oct 15, 2018 at 03:13:19PM -0700, Andrew Morton wrote:
> On Tue, 16 Oct 2018 07:24:39 +1100 Stephen Rothwell
> wrote:
>
> > On Tue, 16 Oct 2018 07:12:40 +1100 Stephen Rothwell
> > wrote:
> > >
> > > On Mon, 15 Oct 2018 11:26:37 -0700 Guenter Roeck
> > > wrote:
> > > >
> > > > ALl ppc
On 10/15/2018 05:39 PM, Michael Ellerman wrote:
> Michael Bringmann writes:
>> diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c
>> b/arch/powerpc/platforms/pseries/hotplug-memory.c
>> index 2b796da..9c76345 100644
>> --- a/arch/powerpc/platforms/pseries/hotplug-memory.c
>> +++ b/arch/
On Mon, 15 Oct 2018 20:42:33 +1100
Alexey Kardashevskiy wrote:
> POWER9 Witherspoon machines come with 4 or 6 V100 GPUs which are not
> pluggable PCIe devices but implement PCIe links for config space and MMIO.
> In addition to that the GPUs are interconnected to each other and also
> have direct
Section 5.7.3
"Storage accesses in real, hypervisor real, and virtual real
addressing modes are performed in a manner that depends on the
contents of MSR HV , VPM, VRMASD, HRMOR, RMLS, RMOR (see Chapter 2),
bit 0 of the
effective address (EA0),"
Hello
1. If MSR_IR = 0 and MSR_DR = 0, does it mean
4.18-stable review patch. If anyone has any objections, please let me know.
--
From: Nicholas Piggin
[ Upstream commit 71d29f43b6332badc5598c656616a62575e83342 ]
THP paths can defer splitting compound pages until after the actual
remap and TLB flushes to split a huge PMD/PUD.
Commit 2ea626306810 ("powerpc/topology: Get topology for shared
processors at boot") will update the cpu node topology for shared lpars
on PowerVM.
However shared lpars on PowerVM also support VPHN and PRRN events.
On receiving a VPHN, PRRN events, cpu to node mapping might change.
Scheduler main
On Wed, Oct 17, 2018 at 12:21:50AM +1100, Michael Ellerman wrote:
> Christophe LEROY writes:
>
> > Looks like a lack of initialisation of the canary for the non-boot CPUs
> > on SMP, you applied this morning the patch I sent you for that.
> >
> > Is the patch in ?
>
> Yeah it is.
>
> $ git l
On 10/15/2018 07:39 PM, Michael Ellerman wrote:
> Michael Bringmann writes:
>> diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c
>> b/arch/powerpc/platforms/pseries/hotplug-memory.c
>> index 2b796da..9c76345 100644
>> --- a/arch/powerpc/platforms/pseries/hotplug-memory.c
>> +++ b/arch/
Christophe LEROY writes:
> Looks like a lack of initialisation of the canary for the non-boot CPUs
> on SMP, you applied this morning the patch I sent you for that.
>
> Is the patch in ?
Yeah it is.
$ git log --oneline 4ffe713b7587 arch/powerpc/kernel/smp.c
8e8a31d7fd54 powerpc: Use cpu_sm
Le 16/10/2018 à 14:49, Joakim Tjernlund a écrit :
On Tue, 2018-10-16 at 12:33 +, Christophe Leroy wrote:
GCC 4.6 is the minimum supported now.
Ouch, from kernel 4.19 or earlier even ?
Don't know, see
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caf
Similarly to the previous patch, this tries to optimise dirty/accessed
bits in ptes to avoid access costs of hardware setting them.
Signed-off-by: Nicholas Piggin
---
mm/huge_memory.c | 12
mm/memory.c | 9 ++---
2 files changed, 14 insertions(+), 7 deletions(-)
diff --gi
fork clears dirty/accessed bits from new ptes in the child. This logic
has existed since mapped page reclaim was done by scanning ptes when
it may have been quite important. Today with physical based pte
scanning, there is less reason to clear these bits, so this patch
avoids clearing the dirty bit
fork clears dirty/accessed bits from new ptes in the child. This logic
has existed since mapped page reclaim was done by scanning ptes when
it may have been quite important. Today with physical based pte
scanning, there is less reason to clear these bits, so this patch
avoids clearing the accessed
This is the HugePage / THP equivalent for 1b2de5d039c8 ("mm/cow: don't
bother write protecting already write-protected pages").
Signed-off-by: Nicholas Piggin
---
mm/huge_memory.c | 14 ++
mm/hugetlb.c | 2 +-
2 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/mm/hu
Fault paths like do_read_fault will install a Linux pte with the young
bit clear. The CPU will fault again because the TLB has not been
updated, this time a valid pte exists so handle_pte_fault will just
set the young bit with ptep_set_access_flags, which flushes the TLB.
The TLB is flushed so the
Since v1 I fixed the hang in nios2, split the fork patch into two
as Linus asked, and added hugetlb code for the "don't bother write
protecting already writeprotected" patch.
Please consider this for more cooking in -mm.
Thanks,
Nick
Nicholas Piggin (5):
nios2: update_mmu_cache clear the old e
On Tue, 2018-10-16 at 12:33 +, Christophe Leroy wrote:
>
>
> GCC 4.6 is the minimum supported now.
Ouch, from kernel 4.19 or earlier even ?
Jocke
GCC 4.6 is the minimum supported now.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/io.h | 20
1 file changed, 20 deletions(-)
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 0a034519957d..3ef40b703c4a 100644
--- a/arch/powerp
On 10/16/18 12:33 AM, Joel Fernandes wrote:
> On Mon, Oct 15, 2018 at 02:42:09AM -0700, Christoph Hellwig wrote:
>> On Fri, Oct 12, 2018 at 06:31:58PM -0700, Joel Fernandes (Google) wrote:
>>> Android needs to mremap large regions of memory during memory management
>>> related operations.
>>
>> Jus
This patch exports the raw per-CPU VPA data via debugfs.
A per-CPU file is created which exports the VPA data of
that CPU to help debug some of the VPA related issues or
to analyze the per-CPU VPA related statistics.
v3: Removed offline CPU check.
v2: Included offline CPU check and other review c
Madhavan Srinivasan writes:
> On Monday 15 October 2018 04:38 PM, Michael Ellerman wrote:
>> Madhavan Srinivasan writes:
>>
>>> On Saturday 13 October 2018 04:26 PM, Michael Ellerman wrote:
...
At the moment they're still identical, and we check that at build
time. That's because we hav
On Tue, Oct 02, 2018 at 09:43:35AM +, Ioana Ciornei wrote:
> > > Add BUS_ATTR_WO macro to make it easier to add attributes without
> > > auditing the mode settings. Also, use the newly added macro where
> > > appropriate.
> > >
> > > Signed-off-by: Ioana Ciornei
> > > ---
> > > arch/powerpc/p
frowand.l...@gmail.com writes:
> From: Frank Rowand
>
> Add checks to (1) overlay apply process and (2) memory freeing
> triggered by overlay release. The checks are intended to detect
> possible memory leaks and invalid overlays.
>
> The checks revealed bugs in existing code. Fixed the bugs.
>
Stephen Rothwell writes:
>> > Booting Linux via __start() @ 0x0040 ...
>>
>> If you git Ctrl-a-c you should get the qemu prompt. Then you can run
>> 'info registers' to print the regs and maybe see where it's stuck.
>>
>> And/or build with EARLY_DEBUG_LPAR to get early console output
This is a note to let you know that I've just added the patch titled
KVM: PPC: Book3S HV: Don't use compound_order to determine host mapping size
to the 4.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename
Alexey Kardashevskiy writes:
> On 16/10/2018 18:16, Aneesh Kumar K.V wrote:
>> Alexey Kardashevskiy writes:
>>
>>> + }
+ }
+ }
+ if (!list_empty(&cma_page_list)) {
+ /*
+ * drop the above get_user_pages reference.
+
On 16/10/2018 18:32, Alistair Popple wrote:
> On Tuesday, 16 October 2018 1:22:53 PM AEDT Alexey Kardashevskiy wrote:
>>
>> On 16/10/2018 13:19, Alistair Popple wrote:
reset_ntl() does what npu2_dev_procedure_reset() does plus more stuff,
there nothing really in npu2_dev_procedure_rese
On 16/10/2018 18:16, Aneesh Kumar K.V wrote:
> Alexey Kardashevskiy writes:
>
>> On 18/09/2018 21:58, Aneesh Kumar K.V wrote:
>>> This helper does a get_user_pages_fast and if it find pages in the CMA area
>>> it will try to migrate them before taking page reference. This makes sure
>>> that
On Wednesday 10 October 2018 10:19 PM, Naveen N. Rao wrote:
> Nathan Fontenot wrote:
>> On 10/10/2018 05:22 AM, Aravinda Prasad wrote:
>>> This patch exports the maximum possible amount of memory
>>> configured on the system via /proc/powerpc/lparcfg.
>>>
>>> Signed-off-by: Aravinda Prasad
>>>
On Tuesday, 16 October 2018 1:22:53 PM AEDT Alexey Kardashevskiy wrote:
>
> On 16/10/2018 13:19, Alistair Popple wrote:
> >> reset_ntl() does what npu2_dev_procedure_reset() does plus more stuff,
> >> there nothing really in npu2_dev_procedure_reset() which reset_ntl()
> >> does not do already fro
Alexey Kardashevskiy writes:
> On 18/09/2018 21:58, Aneesh Kumar K.V wrote:
>> This helper does a get_user_pages_fast and if it find pages in the CMA area
>> it will try to migrate them before taking page reference. This makes sure
>> that
>> we don't keep non-movable pages (due to page referenc
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