On Mon, Oct 14, 2019 at 08:31:02PM +0200, Nicolas Saenz Julienne wrote:
> the Raspberry Pi 4 offers up to 4GB of memory, of which only the first
> is DMA capable device wide. This forces us to use of bounce buffers,
> which are currently not very well supported by ARM's custom DMA ops.
> Among
On Mon, Oct 14, 2019 at 10:03:03PM +0200, Jan Kara wrote:
> On Mon 14-10-19 08:23:39, Eric Sandeen wrote:
> > On 10/14/19 4:43 AM, Jan Kara wrote:
> > > On Mon 14-10-19 16:33:15, Pingfan Liu wrote:
> > > > On Sun, Oct 13, 2019 at 09:34:17AM -0700, Darrick J. Wong wrote:
> > > > > On Sun, Oct 13,
From: Eric Biggers
The PowerPC SPE implementations of AES modes only disable preemption
during the actual encryption/decryption, not during the scatterwalk
functions. It's therefore unnecessary to request an atomic scatterwalk.
So don't do so.
Signed-off-by: Eric Biggers
---
This series converts the glue code for the PowerPC SPE implementations
of AES-ECB, AES-CBC, AES-CTR, and AES-XTS from the deprecated
"blkcipher" API to the "skcipher" API. This is needed in order for the
blkcipher API to be removed.
Patch 1-2 are fixes. Patch 3 is the actual conversion.
Tested
On Fri, Sep 27, 2019 at 02:45:10PM +0200, Frederic Barrat wrote:
> Recent cleanup in the way EEH support is added to a device causes a
> kernel oops when the cxl driver probes a device and creates virtual
> devices discovered on the FPGA:
>
> BUG: Kernel NULL pointer dereference at 0x00a0
From: Eric Biggers
Convert the glue code for the PowerPC SPE implementations of AES-ECB,
AES-CBC, AES-CTR, and AES-XTS from the deprecated "blkcipher" API to the
"skcipher" API. This is needed in order for the blkcipher API to be
removed.
Tested with:
export ARCH=powerpc
From: Eric Biggers
Set the ivsize for the "ecb-ppc-spe" algorithm to 0, since ECB mode
doesn't take an IV.
This fixes a failure in the extra crypto self-tests:
alg: skcipher: ivsize for ecb-ppc-spe (16) doesn't match generic impl
(0)
Signed-off-by: Eric Biggers
---
On Mon, Oct 14, 2019 at 01:40:27AM -0700, Christoph Hellwig wrote:
> On Sun, Oct 13, 2019 at 10:37:00PM +0800, Pingfan Liu wrote:
> > When using fadump (fireware assist dump) mode on powerpc, a mismatch
> > between grub xfs driver and kernel xfs driver has been obsevered. Note:
> > fadump boots
On Mon, Oct 14, 2019 at 08:23:39AM -0500, Eric Sandeen wrote:
> On 10/14/19 4:43 AM, Jan Kara wrote:
> > On Mon 14-10-19 16:33:15, Pingfan Liu wrote:
> > > On Sun, Oct 13, 2019 at 09:34:17AM -0700, Darrick J. Wong wrote:
> > > > On Sun, Oct 13, 2019 at 10:37:00PM +0800, Pingfan Liu wrote:
> > > >
On Sun, Oct 13, 2019 at 07:51:01PM -0700, Nathan Chancellor wrote:
> r374662 gives LLVM the ability to convert certain loops into a reference
> to bcmp as an optimization; this breaks prom_init_check.sh:
When/why does LLVM think this is okay? This function has been removed
from POSIX over a
On Mon 14-10-19 16:33:15, Pingfan Liu wrote:
> On Sun, Oct 13, 2019 at 09:34:17AM -0700, Darrick J. Wong wrote:
> > On Sun, Oct 13, 2019 at 10:37:00PM +0800, Pingfan Liu wrote:
> > > When using fadump (fireware assist dump) mode on powerpc, a mismatch
> > > between grub xfs driver and kernel xfs
diff --git a/arch/powerpc/platforms/powernv/ocxl.c
b/arch/powerpc/platforms/powernv/ocxl.c
index 8c65aacda9c8..4d26cba12b63 100644
--- a/arch/powerpc/platforms/powernv/ocxl.c
+++ b/arch/powerpc/platforms/powernv/ocxl.c
@@ -12,11 +12,54 @@
#define PNV_OCXL_PASID_BITS 15
#define
On 06.10.19 10:56, David Hildenbrand wrote:
> We currently try to shrink a single zone when removing memory. We use the
> zone of the first page of the memory we are removing. If that memmap was
> never initialized (e.g., memory was never onlined), we will read garbage
> and can trigger kernel
On Mon, Oct 14, 2019 at 11:25:09AM +0200, Greg KH wrote:
> Good luck, I don't really think that most, if any, of this is needed,
> but hey, it's nice to clean it up where it can be :)
Some of the virtual devices we have (that use devm) really ought to set
the node too, like drivers/base/cpu.c and
On Mon, Oct 14, 2019 at 11:49:12AM +0200, Peter Zijlstra wrote:
> On Mon, Oct 14, 2019 at 11:25:09AM +0200, Greg KH wrote:
> > Good luck, I don't really think that most, if any, of this is needed,
> > but hey, it's nice to clean it up where it can be :)
>
> Some of the virtual devices we have
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Michael Ellerman
Cc: "Naveen N. Rao"
Cc:
Le 09/10/2019 à 17:11, christophe lombard a écrit :
Specifies the templates in the Transaction Layer that the OpenCAPI device/host
support when transmitting/receiving DL/DLX frames to or from the OpenCAPI
device/host.
Update, rename and create new few platform-specific calls which can be used
On 14/10/2019 05:51, David Gibson wrote:
On Fri, Oct 11, 2019 at 06:25:18PM -0700, Ram Pai wrote:
From: Thiago Jung Bauermann
In order to safely use the DMA API, virtio needs to know whether DMA
addresses are in fact physical addresses and for that purpose,
dma_addr_is_phys_addr() is
On Thu, Oct 10, 2019 at 5:16 PM Kees Cook wrote:
>
> Since the EXCEPTION_TABLE is read-only, collapse it into RO_DATA.
>
> Signed-off-by: Kees Cook
> ---
> arch/xtensa/kernel/vmlinux.lds.S | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
Acked-by: Max Filippov
--
Thanks.
-- Max
On 2019/10/12 18:47, Greg KH wrote:
> On Sat, Oct 12, 2019 at 12:40:01PM +0200, Greg KH wrote:
>> On Sat, Oct 12, 2019 at 05:47:56PM +0800, Yunsheng Lin wrote:
>>> On 2019/10/12 15:40, Greg KH wrote:
On Sat, Oct 12, 2019 at 02:17:26PM +0800, Yunsheng Lin wrote:
> add pci and acpi
On Sun, Oct 13, 2019 at 10:37:00PM +0800, Pingfan Liu wrote:
> When using fadump (fireware assist dump) mode on powerpc, a mismatch
> between grub xfs driver and kernel xfs driver has been obsevered. Note:
> fadump boots up in the following sequence: fireware -> grub reads kernel
> and initramfs
On 06.10.19 10:56, David Hildenbrand wrote:
Let's limit shrinking to !ZONE_DEVICE so we can fix the current code. We
should never try to touch the memmap of offline sections where we could
have uninitialized memmaps and could trigger BUGs when calling
page_to_nid() on poisoned pages.
There is
On Sun, Oct 13, 2019 at 09:34:17AM -0700, Darrick J. Wong wrote:
> On Sun, Oct 13, 2019 at 10:37:00PM +0800, Pingfan Liu wrote:
> > When using fadump (fireware assist dump) mode on powerpc, a mismatch
> > between grub xfs driver and kernel xfs driver has been obsevered. Note:
> > fadump boots up
Hi Eric,
On Sat, 12 Oct 2019 at 04:32, Eric Biggers wrote:
>
> From: Eric Biggers
>
> Convert the glue code for the PowerPC SPE implementations of AES-ECB,
> AES-CBC, AES-CTR, and AES-XTS from the deprecated "blkcipher" API to the
> "skcipher" API.
>
> Tested with:
>
> export
On 06.10.19 10:56, David Hildenbrand wrote:
From: "Aneesh Kumar K.V"
With an altmap, the memmap falling into the reserved altmap space are
not initialized and, therefore, contain a garbage NID and a garbage
zone. Make sure to read the NID/zone from a memmap that was initialzed.
This fixes a
On Mon, Oct 14, 2019 at 04:00:46PM +0800, Yunsheng Lin wrote:
> On 2019/10/12 18:47, Greg KH wrote:
> > On Sat, Oct 12, 2019 at 12:40:01PM +0200, Greg KH wrote:
> >> On Sat, Oct 12, 2019 at 05:47:56PM +0800, Yunsheng Lin wrote:
> >>> On 2019/10/12 15:40, Greg KH wrote:
> On Sat, Oct 12, 2019
On 06.10.19 10:56, David Hildenbrand wrote:
> We might use the nid of memmaps that were never initialized. For
> example, if the memmap was poisoned, we will crash the kernel in
> pfn_to_nid() right now. Let's use the calculated boundaries of the separate
> zones instead. This now also avoids
We are hadrcoding length everywhere in the watchpoint code.
Introduce macros for the length and use them.
Signed-off-by: Ravi Bangoria
---
arch/powerpc/include/asm/hw_breakpoint.h | 3 +++
arch/powerpc/kernel/hw_breakpoint.c | 4 ++--
arch/powerpc/kernel/ptrace.c | 6 +++---
Watchpoint match range is always doubleword(8 bytes) aligned on
powerpc. If the given range is crossing doubleword boundary, we
need to increase the length such that next doubleword also get
covered. Ex,
address len = 6 bytes
|=.
ptrace-hwbreak.c selftest is logically broken. On powerpc, when
watchpoint is created with ptrace, signals are generated before
executing the instruction and user has to manually singlestep
the instruction with watchpoint disabled, which selftest never
does and thus it keeps on getting the signal
The patch
ASoC: fsl_mqs: Move static keyword to the front of declarations
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.5
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the
On Sun, 13 Oct 2019 at 06:40, Eric Biggers wrote:
>
> From: Eric Biggers
>
> Convert the PowerPC Nest (NX) implementation of AES-ECB from the
> deprecated "blkcipher" API to the "skcipher" API. This is needed in
> order for the blkcipher API to be removed.
>
> Signed-off-by: Eric Biggers
On Sun, 13 Oct 2019 at 06:40, Eric Biggers wrote:
>
> From: Eric Biggers
>
> Convert the PowerPC Nest (NX) implementation of AES-CBC from the
> deprecated "blkcipher" API to the "skcipher" API. This is needed in
> order for the blkcipher API to be removed.
>
> Signed-off-by: Eric Biggers
On Powerpc, watchpoint match range is double-word granular. On a
watchpoint hit, DAR is set to the first byte of overlap between
actual access and watched range. And thus it's quite possible that
DAR does not point inside user specified range. Ex, say user creates
a watchpoint with address range
So far we used to ignore exception if dar points outside of user
specified range. But now we are ignoring it only if actual load/
store range does not overlap with user specified range. Include
selftests for the same:
# ./tools/testing/selftests/powerpc/ptrace/perf-hwbreak
...
TESTED: No
On Sun, 13 Oct 2019 at 06:40, Eric Biggers wrote:
>
> From: Eric Biggers
>
> The NX crypto driver is using 'struct blkcipher_desc' to pass the IV
> around, even for AEADs (for which it creates the struct on the stack).
> This is not appropriate since this structure is part of the "blkcipher"
>
On Sun, 13 Oct 2019 at 06:40, Eric Biggers wrote:
>
> From: Eric Biggers
>
> Convert the PowerPC Nest (NX) implementation of AES-CTR from the
> deprecated "blkcipher" API to the "skcipher" API. This is needed in
> order for the blkcipher API to be removed.
>
> Signed-off-by: Eric Biggers
v4: https://lists.ozlabs.org/pipermail/linuxppc-dev/2019-September/197621.html
v4->v5:
- patch 1,2,3/7: Split v4 patch1 into three differnet patches.
* 1st patch to replace hardcoded watchpoint length with macros
* 2nd patch that fixes the unaligned watchpoint issue
* 3rd patch that
On the 8xx, signals are generated after executing the instruction.
So no need to manually single-step on 8xx. Also, 8xx __set_dabr()
currently ignores length and hardcodes the length to 8 bytes. So
all unaligned and 512 byte testcase will fail on 8xx. Ignore those
testcases on 8xx.
Signed-off-by:
ptrace_set_debugreg() does not consider new length while overwriting
the watchpoint. Fix that. ppc_set_hwdebug() aligns watchpoint address
to doubleword boundary but does not change the length. If address range
is crossing doubleword boundary and length is less then 8, we will loose
samples from
Hi Andrey,
>> +/*
>> + * Ensure poisoning is visible before the shadow is made visible
>> + * to other CPUs.
>> + */
>> +smp_wmb();
>
> I'm not quite understand what this barrier do and why it needed.
> And if it's really needed there should be a pairing barrier
> on the
On 14/10/2019 12:17, Frederic Barrat wrote:
diff --git a/arch/powerpc/platforms/powernv/ocxl.c
b/arch/powerpc/platforms/powernv/ocxl.c
index 8c65aacda9c8..4d26cba12b63 100644
--- a/arch/powerpc/platforms/powernv/ocxl.c
+++ b/arch/powerpc/platforms/powernv/ocxl.c
@@ -12,11 +12,54 @@
#define
On Tue, Oct 15, 2019 at 12:57:44AM +1100, Daniel Axtens wrote:
> Hi Andrey,
>
>
> >> + /*
> >> + * Ensure poisoning is visible before the shadow is made visible
> >> + * to other CPUs.
> >> + */
> >> + smp_wmb();
> >
> > I'm not quite understand what this barrier do and why it needed.
>
On 14/10/2019 12:21, Frederic Barrat wrote:
Le 09/10/2019 à 17:11, christophe lombard a écrit :
Specifies the templates in the Transaction Layer that the OpenCAPI
device/host
support when transmitting/receiving DL/DLX frames to or from the OpenCAPI
device/host.
Update, rename and create new
On Tue, Oct 01, 2019 at 04:58:30PM +1000, Daniel Axtens wrote:
> Hook into vmalloc and vmap, and dynamically allocate real shadow
> memory to back the mappings.
>
> Most mappings in vmalloc space are small, requiring less than a full
> page of shadow space. Allocating a full shadow page per
On Mon, Oct 14, 2019 at 2:35 AM Segher Boessenkool
wrote:
>
> On Sun, Oct 13, 2019 at 07:51:01PM -0700, Nathan Chancellor wrote:
> > r374662 gives LLVM the ability to convert certain loops into a reference
> > to bcmp as an optimization; this breaks prom_init_check.sh:
>
> When/why does LLVM
On 10/14/19 3:03 PM, Jan Kara wrote:
On Mon 14-10-19 08:23:39, Eric Sandeen wrote:
On 10/14/19 4:43 AM, Jan Kara wrote:
On Mon 14-10-19 16:33:15, Pingfan Liu wrote:
On Sun, Oct 13, 2019 at 09:34:17AM -0700, Darrick J. Wong wrote:
On Sun, Oct 13, 2019 at 10:37:00PM +0800, Pingfan Liu
Some architectures, notably ARM, are interested in tweaking this
depending on their runtime DMA addressing limitations.
Signed-off-by: Nicolas Saenz Julienne
---
arch/arm64/include/asm/page.h | 2 --
arch/arm64/mm/init.c| 9 +++--
arch/powerpc/include/asm/page.h | 9
On Mon, Oct 14, 2019 at 08:56:12AM -0700, Nick Desaulniers wrote:
> On Mon, Oct 14, 2019 at 2:35 AM Segher Boessenkool
> wrote:
> >
> > On Sun, Oct 13, 2019 at 07:51:01PM -0700, Nathan Chancellor wrote:
> > > r374662 gives LLVM the ability to convert certain loops into a reference
> > > to bcmp
Make sure starting addr is aligned to segment boundary so that when
incrementing the segment, the starting address of the new segment is
below the end address. Otherwise the last segment might get missed.
Fixes: a68c31fc01ef ("powerpc/32s: Implement Kernel Userspace Access
Protection")
On Mon, 14 Oct 2019 11:32:13 +0200 David Hildenbrand wrote:
> > Fixes: d0dc12e86b31 ("mm/memory_hotplug: optimize memory hotplug")
>
> @Andrew, can you convert that to
>
> Fixes: f1dd2cd13c4b ("mm, memory_hotplug: do not associate hotadded
> memory to zones until online") # visible after
On Mon, 14 Oct 2019 11:39:13 +0200 David Hildenbrand wrote:
> > Fixes: d0dc12e86b31 ("mm/memory_hotplug: optimize memory hotplug")
>
> @Andrew, can you convert that to
>
> Fixes: f1dd2cd13c4b ("mm, memory_hotplug: do not associate hotadded memory to
> zones until online") # visible after
On 10/14/19 4:43 AM, Jan Kara wrote:
On Mon 14-10-19 16:33:15, Pingfan Liu wrote:
On Sun, Oct 13, 2019 at 09:34:17AM -0700, Darrick J. Wong wrote:
On Sun, Oct 13, 2019 at 10:37:00PM +0800, Pingfan Liu wrote:
When using fadump (fireware assist dump) mode on powerpc, a mismatch
between grub xfs
On Mon 14-10-19 08:23:39, Eric Sandeen wrote:
> On 10/14/19 4:43 AM, Jan Kara wrote:
> > On Mon 14-10-19 16:33:15, Pingfan Liu wrote:
> > > On Sun, Oct 13, 2019 at 09:34:17AM -0700, Darrick J. Wong wrote:
> > > > On Sun, Oct 13, 2019 at 10:37:00PM +0800, Pingfan Liu wrote:
> > > > > When using
On Mon, Oct 14, 2019 at 10:45:22AM +0200, Ard Biesheuvel wrote:
> Hi Eric,
>
> On Sat, 12 Oct 2019 at 04:32, Eric Biggers wrote:
> >
> > From: Eric Biggers
> >
> > Convert the glue code for the PowerPC SPE implementations of AES-ECB,
> > AES-CBC, AES-CTR, and AES-XTS from the deprecated
On Mon, 14 Oct 2019 at 19:38, Eric Biggers wrote:
>
> On Mon, Oct 14, 2019 at 10:45:22AM +0200, Ard Biesheuvel wrote:
> > Hi Eric,
> >
> > On Sat, 12 Oct 2019 at 04:32, Eric Biggers wrote:
> > >
> > > From: Eric Biggers
> > >
> > > Convert the glue code for the PowerPC SPE implementations of
Hi all,
the Raspberry Pi 4 offers up to 4GB of memory, of which only the first
is DMA capable device wide. This forces us to use of bounce buffers,
which are currently not very well supported by ARM's custom DMA ops.
Among other things the current mechanism (see dmabounce.c) isn't
suitable for
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