Hi Michael,
On Thu, 16 May 2024 12:42:01 +1000 Michael Ellerman wrote:
>
> Stephen Rothwell writes:
> >
> > After merging the powerpc tree, today's (it may have been yesterday's)
> > linux-next build (powerpc allyesconfig) produced this warning:
> >
> > WARNING: modpost: vmlinux: section mismatc
Hi Danny,
Danny Tsen writes:
> Use the perl output of x25519-ppc64.pl from CRYPTOGAMs and added three
> supporting functions, x25519_fe51_sqr_times, x25519_fe51_frombytes
> and x25519_fe51_tobytes.
For other algorithms we have checked-in the perl script and generated
the code at runtime. Is ther
Stephen Rothwell writes:
> Hi all,
>
> After merging the powerpc tree, today's (it may have been yesterday's)
> linux-next build (powerpc allyesconfig) produced this warning:
>
> WARNING: modpost: vmlinux: section mismatch in reference:
> fadump_setup_param_area+0x200 (section: .text.fadump_setup
On Wed, 15 May 2024 15:18:08 -0700
Stephen Brennan wrote:
> Masami Hiramatsu (Google) writes:
> > On Thu, 2 May 2024 01:35:16 +0800
> > Guo Ren wrote:
> >
> >> On Thu, May 2, 2024 at 12:30 AM Stephen Brennan
> >> wrote:
> >> >
> >> > If an error happens in ftrace, ftrace_kill() will prevent di
Masami Hiramatsu (Google) writes:
> On Thu, 2 May 2024 01:35:16 +0800
> Guo Ren wrote:
>
>> On Thu, May 2, 2024 at 12:30 AM Stephen Brennan
>> wrote:
>> >
>> > If an error happens in ftrace, ftrace_kill() will prevent disarming
>> > kprobes. Eventually, the ftrace_ops associated with the kprobes
On Wed, May 15, 2024 at 2:45 PM Erhard Furtner wrote:
>
> On Wed, 8 May 2024 20:21:11 +0200
> Erhard Furtner wrote:
>
> > Greetings!
> >
> > Got that on my dual CPU PowerMac G4 DP shortly after boot. This does not
> > happen every time at bootup though:
> >
> > [...]
> > kswapd0: page allocation
Hi,
GStreamer hat on ...
Le mercredi 15 mai 2024 à 12:46 +0200, Jaroslav Kysela a écrit :
> On 15. 05. 24 12:19, Takashi Iwai wrote:
> > On Wed, 15 May 2024 11:50:52 +0200,
> > Jaroslav Kysela wrote:
> > >
> > > On 15. 05. 24 11:17, Hans Verkuil wrote:
> > > > Hi Jaroslav,
> > > >
> > > > On 5/
On Wed, May 15, 2024 at 12:19:16PM -0700, Axel Rasmussen wrote:
> An unprivileged process can allocate a VMA, use the userfaultfd API to
> install one of these PTE markers, and then register a no-op SIGBUS
> handler. Now it can access that address in a tight loop,
Maybe the userfaultfd should not
On Wed, May 15, 2024 at 11:33 AM Borislav Petkov wrote:
>
> On Wed, May 15, 2024 at 10:33:03AM -0700, Axel Rasmussen wrote:
> > Right, the goal is to still have the process get a SIGBUS, but to
> > avoid the "MCE error" log message. The basic issue is, unprivileged
> > users can set these markers
On Wed, May 15, 2024 at 10:33:03AM -0700, Axel Rasmussen wrote:
> Right, the goal is to still have the process get a SIGBUS, but to
> avoid the "MCE error" log message. The basic issue is, unprivileged
> users can set these markers up, and thereby completely spam up the
> log.
What is the real att
On Wed, May 15, 2024 at 3:54 AM Oscar Salvador wrote:
>
> On Wed, May 15, 2024 at 12:41:42PM +0200, Borislav Petkov wrote:
> > On Fri, May 10, 2024 at 11:29:26AM -0700, Axel Rasmussen wrote:
> > > @@ -3938,7 +3938,7 @@ static vm_fault_t handle_pte_marker(struct vm_fault
> > > *vmf)
> > >
> > >
Thanks for the info. I should be able to do it. I was hoping an
assembly guru like you can show me some tricks here if there is :)
No tricks in cswap, it's as straightforward as it gets, so go ahead :-)
On 5/9/24 06:13, Jaroslav Kysela wrote:
> On 09. 05. 24 12:44, Shengjiu Wang wrote:
mem2mem is just like the decoder in the compress pipeline. which is
one of the components in the pipeline.
>>>
>>> I was thinking of loopback with endpoints using compress streams,
>>> without physical
Adapt the driver to work with configurations using two codecs or more.
Modify fsl_asoc_card_probe() to handle use cases where 2 codecs are
given in the device tree.
This will be needed for the generic codec case.
Use cases using one codec will ignore any given codecs other than the
first.
Signed-
Add documentation about new dts bindings following new support
for compatible "fsl,imx-audio-generic".
Some CPU DAI don't require a real audio codec. The new compatible
"fsl,imx-audio-generic" allows using the driver with codec drivers
SPDIF DIT and SPDIF DIR as dummy codecs.
It also allows using
Hello,
This is the v4 of the series of patch aiming to make the machine driver
"fsl-asoc-card" compatible with use cases where there is no real codec
driver. It proposes to use the "spdif_receiver" and "spdif_transmitter"
drivers instead of the dummy codec.
This is a first step in using the S/PDIF
Add the new compatible "fsl,imx-audio-generic" for a generic codec
use case. It allows using the fsl-asoc-card driver with the
spdif_receiver and spdif_transmitter codec drivers used as dummy codecs.
It can be used for cases where there is no real codec or codecs which do
not require declaring cont
The default dai format defined by DAI_FMT_BASE doesn't set if the codec
is consumer or provider of the bit and frame clocks.
S/PDIF DIR usually converts audio signal to an asynchronous I2S/PCM
stream, and doesn't consume a bit or frame clock.
As S/PDIF DIR and DIT are used as codecs for the gener
Add support for dai links using multiple codecs for multi-codec
use cases.
Signed-off-by: Elinor Montmasson
Co-authored-by: Philip-Dylan Gleonec
---
sound/soc/fsl/fsl-asoc-card.c | 22 ++
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/sound/soc/fsl/fsl-asoc-c
Add an optional DT clock "cpu_sysclk" to get the CPU DAI system-clock
frequency when using the generic codec.
It is set for both Tx and Rx.
The way the frequency value is used is up to the CPU DAI driver
implementation.
Signed-off-by: Elinor Montmasson
---
sound/soc/fsl/fsl-asoc-card.c | 6 +
Add use of optional TDM slot properties "dai-tdm-slot-num" and
"dai-tdm-slot-width" through snd_soc_of_parse_tdm_slot().
They allow setting a custom TDM slot width in bits and number of slots
for the CPU DAI when using the generic codec.
Signed-off-by: Elinor Montmasson
---
sound/soc/fsl/fsl-aso
Add a second dai link component for codecs that will be used for the
generic codec use case.
It will use spdif_receiver and spdif_transmitter drivers as dummy codec
drivers, needing 2 codecs slots for the links.
To prevent deferring in use cases using only one codec, also set
by default the number
Add new optional DT property "cpu-system-clock-direction-out" to set
sysclk direction as "out" for the CPU DAI when using the generic codec.
It is set for both Tx and Rx.
If not set, the direction is "in".
The way the direction value is used is up to the CPU DAI driver
implementation.
Signed-off-b
Hi Andy,
Thanks for the info. I should be able to do it. I was hoping an
assembly guru like you can show me some tricks here if there is :)
Thanks.
-Danny
On 5/15/24 8:33 AM, Andy Polyakov wrote:
+static void cswap(fe51 p, fe51 q, unsigned int bit)
+{
+ u64 t, i;
+ u64 c = 0 - (u64)
On Wed, May 15, 2024 at 6:46 PM Jaroslav Kysela wrote:
>
> On 15. 05. 24 12:19, Takashi Iwai wrote:
> > On Wed, 15 May 2024 11:50:52 +0200,
> > Jaroslav Kysela wrote:
> >>
> >> On 15. 05. 24 11:17, Hans Verkuil wrote:
> >>> Hi Jaroslav,
> >>>
> >>> On 5/13/24 13:56, Jaroslav Kysela wrote:
> O
+static void cswap(fe51 p, fe51 q, unsigned int bit)
+{
+ u64 t, i;
+ u64 c = 0 - (u64) bit;
+
+ for (i = 0; i < 5; ++i) {
+ t = c & (p[i] ^ q[i]);
+ p[i] ^= t;
+ q[i] ^= t;
+ }
+}
The "c" in cswap stands for "constant-time," and the problem is that
contemporary
Hi Andy,
Points taken. And much appreciate for the help.
Thanks.
-Danny
On 5/15/24 3:29 AM, Andy Polyakov wrote:
Hi,
+static void cswap(fe51 p, fe51 q, unsigned int bit)
+{
+ u64 t, i;
+ u64 c = 0 - (u64) bit;
+
+ for (i = 0; i < 5; ++i) {
+ t = c & (p[i] ^ q[i]);
+
See inline.
On 5/15/24 4:06 AM, Andy Polyakov wrote:
Hi,
+SYM_FUNC_START(x25519_fe51_sqr_times)
...
+
+.Lsqr_times_loop:
...
+
+ std 9,16(3)
+ std 10,24(3)
+ std 11,32(3)
+ std 7,0(3)
+ std 8,8(3)
+ bdnz .Lsqr_times_loop
I see no reason for why the stores
Thank you Andy. Will fix this.
On 5/15/24 3:11 AM, Andy Polyakov wrote:
Hi,
Couple of remarks inline.
+# [1] https://www.openssl.org/~appro/cryptogams/
https://github.com/dot-asm/cryptogams/ is arguably better reference.
+SYM_FUNC_START(x25519_fe51_mul)
+.align 5
The goal is to alig
Hi,
+SYM_FUNC_START(x25519_fe51_sqr_times)
...
+
+.Lsqr_times_loop:
...
+
+ std 9,16(3)
+ std 10,24(3)
+ std 11,32(3)
+ std 7,0(3)
+ std 8,8(3)
+ bdnz.Lsqr_times_loop
I see no reason for why the stores can't be moved outside the loop
Hi,
+static void cswap(fe51 p, fe51 q, unsigned int bit)
+{
+ u64 t, i;
+ u64 c = 0 - (u64) bit;
+
+ for (i = 0; i < 5; ++i) {
+ t = c & (p[i] ^ q[i]);
+ p[i] ^= t;
+ q[i] ^= t;
+ }
+}
The "c" in cswap stands for "constant-time,
Hi,
Couple of remarks inline.
+# [1] https://www.openssl.org/~appro/cryptogams/
https://github.com/dot-asm/cryptogams/ is arguably better reference.
+SYM_FUNC_START(x25519_fe51_mul)
+.align 5
The goal is to align the label, not the first instruction after the
directive. It's not a proble
On Wed, May 15, 2024 at 12:41:42PM +0200, Borislav Petkov wrote:
> On Fri, May 10, 2024 at 11:29:26AM -0700, Axel Rasmussen wrote:
> > @@ -3938,7 +3938,7 @@ static vm_fault_t handle_pte_marker(struct vm_fault
> > *vmf)
> >
> > /* Higher priority than uffd-wp when data corrupted */
> > if
On Fri, May 10, 2024 at 11:29:26AM -0700, Axel Rasmussen wrote:
> @@ -3938,7 +3938,7 @@ static vm_fault_t handle_pte_marker(struct vm_fault
> *vmf)
>
> /* Higher priority than uffd-wp when data corrupted */
> if (marker & PTE_MARKER_POISONED)
> - return VM_FAULT_HWPOISON;
On 15. 05. 24 12:19, Takashi Iwai wrote:
On Wed, 15 May 2024 11:50:52 +0200,
Jaroslav Kysela wrote:
On 15. 05. 24 11:17, Hans Verkuil wrote:
Hi Jaroslav,
On 5/13/24 13:56, Jaroslav Kysela wrote:
On 09. 05. 24 13:13, Jaroslav Kysela wrote:
On 09. 05. 24 12:44, Shengjiu Wang wrote:
mem2mem i
On Tue, May 14, 2024 at 03:34:24PM -0600, Peter Xu wrote:
> The question is whether we can't.
>
> Now we reserved a swp entry just for hwpoison and it makes sense only
> because we cached the poisoned pfn inside. My long standing question is
> why do we ever need that pfn after all. If we don't
On Wed, 15 May 2024 11:50:52 +0200,
Jaroslav Kysela wrote:
>
> On 15. 05. 24 11:17, Hans Verkuil wrote:
> > Hi Jaroslav,
> >
> > On 5/13/24 13:56, Jaroslav Kysela wrote:
> >> On 09. 05. 24 13:13, Jaroslav Kysela wrote:
> >>> On 09. 05. 24 12:44, Shengjiu Wang wrote:
> >> mem2mem is just like
On 15. 05. 24 11:17, Hans Verkuil wrote:
Hi Jaroslav,
On 5/13/24 13:56, Jaroslav Kysela wrote:
On 09. 05. 24 13:13, Jaroslav Kysela wrote:
On 09. 05. 24 12:44, Shengjiu Wang wrote:
mem2mem is just like the decoder in the compress pipeline. which is
one of the components in the pipeline.
I w
Hi Jaroslav,
On 5/13/24 13:56, Jaroslav Kysela wrote:
> On 09. 05. 24 13:13, Jaroslav Kysela wrote:
>> On 09. 05. 24 12:44, Shengjiu Wang wrote:
> mem2mem is just like the decoder in the compress pipeline. which is
> one of the components in the pipeline.
I was thinking of loopba
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