ret_fast_syscall
[ less than 2.5% per entry ]
--8---cut here---end---8---
--
Łukasz Stelmach
Software wizzard
Samsung Poland RD Center
Al. Armii Ludowej 26, 00-609 Warszawa
http://www.rd.samsung.pl
--
To unsubscribe from this list: send the line
Files created with __shmem_file_stup() appear to have somewhat fake
dentries which make them look like root directories and not get
the label the current process or (*) star meant for tmpfs files.
Signed-off-by: Łukasz Stelmach l.stelm...@samsung.com
---
security/smack/smack_lsm.c | 16
---
drivers/mfd/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 38356e3..4890e27 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1362,7 +1362,7 @@ config MFD_WM8994
depends on I2C
help
Signed-off-by: Łukasz Stelmach stl...@poczta.fm
---
drivers/mfd/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 38356e3..4890e27 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1362,7 +1362,7 @@ config
-free.
Kind regards,
--
Łukasz Stelmach
Samsung RD Institute Poland
Samsung Electronics
signature.asc
Description: PGP signature
It was 2015-04-30 czw 11:12, when Richard Weinberger wrote:
Am 30.04.2015 um 11:05 schrieb Łukasz Stelmach:
Regardless, of initrd issues I feel there is a need of a local IPC
that is more capable than UDS. Linus Torvalds is probably right that
dbus-daemon is everything but effictient. I
It was 2015-04-30 czw 12:40, when Richard Weinberger wrote:
Am 30.04.2015 um 12:19 schrieb Łukasz Stelmach:
It was 2015-04-30 czw 11:12, when Richard Weinberger wrote:
Am 30.04.2015 um 11:05 schrieb Łukasz Stelmach:
Regardless, of initrd issues I feel there is a need of a local IPC
It was 2015-04-30 czw 14:23, when Richard Weinberger wrote:
Am 30.04.2015 um 14:16 schrieb Łukasz Stelmach:
It was 2015-04-30 czw 12:40, when Richard Weinberger wrote:
Am 30.04.2015 um 12:19 schrieb Łukasz Stelmach:
It was 2015-04-30 czw 11:12, when Richard Weinberger wrote:
Am 30.04.2015 um
It was 2015-04-30 czw 14:45, when Richard Weinberger wrote:
Am 30.04.2015 um 14:40 schrieb Łukasz Stelmach:
It was 2015-04-30 czw 14:23, when Richard Weinberger wrote:
Am 30.04.2015 um 14:16 schrieb Łukasz Stelmach:
It was 2015-04-30 czw 12:40, when Richard Weinberger wrote:
Am 30.04.2015 um
not support WMI so the commit does not update key mappings
in the asus-nb-wmi.c file.
I have not tested this mapping on any other Asus laptop.
Signed-off-by: Łukasz Stelmach stl...@poczta.fm
---
drivers/platform/x86/asus-laptop.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/platform
Signed-off-by: Łukasz Stelmach stl...@poczta.fm
---
drivers/platform/x86/asus-laptop.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/platform/x86/asus-laptop.c
b/drivers/platform/x86/asus-laptop.c
index 58d29c4..f2b5d0a 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers
it correctly makes a memory access depending on
secret data. Because memory accesses are note constant time operations
due to cache one might try (and succeed?) learning about secrets by
measuring time required to encrypt or decrypt data.
--
Łukasz Stelmach
Samsung R Institute Poland
Samsung
It was <2015-11-19 czw 13:31>, when Ismail Kizir wrote:
> On Thu, Nov 19, 2015 at 2:12 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> It was <2015-11-18 śro 06:25>, when Ismail Kizir wrote:
>>> Hello,
>>>
>>> I've develo
of user-land code,
+ enables other process (e.g. init) to be notified and apply policy.
Kind regards,
--
Łukasz Stelmach
Samsung R Institute Poland
Samsung Electronics
signature.asc
Description: PGP signature
Add binding documentation for the True Random Number Generator
found on Samsung Exynos 5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
.../devicetree/bindings/rng/samsung,exynos5250-trng.txt | 17 +
1 file changed, 17 insertions(+)
create mode
for Exynos SoCs.
Łukasz Stelmach (3):
dt-bindings: hwrng: Add Samsung Exynos 5250+ True RNG bindings
hwrng: exynos - add Samsung Exynos True RNG driver
ARM: dts: exynos: Add nodes for True Random Number Generator
.../bindings/rng/samsung,exynos5250-trng.txt | 17 ++
MAINTAINERS
Add nodes for the True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
arch/arm/boot/dts/exynos5.dtsi| 5 +
arch/arm/boot/dts/exynos5250.dtsi | 5 +
arch/arm/boot/dts/exynos5410.dtsi | 5 +
arch/arm/bo
Add support for True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
MAINTAINERS | 7 +
drivers/char/hw_random/Kconfig | 12 ++
drivers/char/hw_random/Makefile | 1 +
driver
;> + u32 val;
>> +
>> + max = max > (EXYNOS_TRNG_FIFO_LEN * 4) ?
>> + (EXYNOS_TRNG_FIFO_LEN * 4) : max;
>
> max is always > 32. This condition is not required.
No, it is not.
http://elixir.free-electrons.com/linux/latest/source/drivers/ch
Add nodes for the True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
arch/arm/boot/dts/exynos5.dtsi| 5 +
arch/arm/boot/dts/exynos5250.dtsi | 5 +
arch/arm/boot/dts/exynos5410.dtsi | 5 +
arch/arm/bo
t/lists/linux-samsung-soc/msg61253.html
https://patchwork.kernel.org/patch/10072967/
https://patchwork.kernel.org/patch/10072971/
https://patchwork.kernel.org/patch/10072963/
Łukasz Stelmach (3):
dt-bindings: hwrng: Add Samsung Exynos 5250+ True RNG bindings
hwrng: exynos - add Samsung Exynos Tr
Add support for True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
MAINTAINERS | 7 +
drivers/char/hw_random/Kconfig | 12 ++
drivers/char/hw_random/Makefile | 1 +
driver
Add binding documentation for the True Random Number Generator
found on Samsung Exynos 5250+ SoCs.
Acked-by: Rob Herring <r...@kernel.org>
Reviewed-by: Krzysztof Kozlowski <k...@kernel.org>
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
.../devicetree/bindings/rng/
It was <2017-11-23 czw 17:31>, when Krzysztof Kozlowski wrote:
> On Thu, Nov 23, 2017 at 4:09 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> Add support for True Random Number Generator found in Samsung Exynos
>> 5250+ SoCs.
>>
>> Signed-off-b
It was <2017-12-04 pon 14:13>, when Krzysztof Kozlowski wrote:
> On Mon, Dec 4, 2017 at 1:53 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> Add binding documentation for the True Random Number Generator
>> found on Samsung Exynos 5250+ SoCs.
>>
>&g
rom an error path.
- Removed dev_info() reporting hardware presence from
exynos_rng_probe().
Łukasz Stelmach (4):
crypto: exynos - Support Exynos5250+ SoCs
crypto: exynos - Improve performance of PRNG
crypto: exynos - Reseed PRNG after generating 2^16 random bytes
crypto: exynos - Introduce mu
entropy, but it helps preventing
backtracking the internal state of the device from its output sequence,
and hence, prevents potential attacker from predicting numbers to be
generated.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
Reviewed-by: Stephan Mueller <smuel...@c
()
function enables switching between different threads waiting for the
driver to generate random numbers for them.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k...@kernel.org>
---
drivers/crypto/exynos-rng.c | 21 +
1
Add support for PRNG in Exynos5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
.../bindings/crypto/samsung,exynos-rng4.txt| 4 +++-
drivers/crypto/exynos-rng.c| 27 --
2 files changed, 28 insertions(+), 3 del
Use memcpy_fromio() instead of custom exynos_rng_copy_random() function
to retrieve generated numbers from the registers of PRNG.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
drivers/crypto/exynos-rng.c | 31 ++-
1 file changed, 2 insertions(
in the kernel command line).
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
Thank you Stephan Mueller for explanations.
drivers/crypto/exynos-rng.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/exynos-rng.c b/drivers/crypto/exynos-rng.c
index 4b2ed1
It was <2017-12-05 wto 14:54>, when Stephan Mueller wrote:
> Am Dienstag, 5. Dezember 2017, 13:35:57 CET schrieb Łukasz Stelmach:
>
> Hi Łukasz,
>
>> Use memcpy_fromio() instead of custom exynos_rng_copy_random() function
>> to retrieve generated numbers from the re
Add binding documentation for the True Random Number Generator
found on Samsung Exynos 5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
.../devicetree/bindings/rng/samsung,exynos5250-trng.txt | 17 +
1 file changed, 17 insertions(+)
create mode
Add support for True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
MAINTAINERS | 7 +
drivers/char/hw_random/Kconfig | 12 ++
drivers/char/hw_random/Makefile | 1 +
driver
Hello.
The following patches add support for the true random number generator
found in Samsung Exynos 5250+ SoCs.
Patch #1 adds documentation for devicetree bindings.
Patch #2 introduces the driver and appropriate changes in Makefile and Kconfig.
Patch #3 adds nodes in devicetree files for
Add nodes for the True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
arch/arm/boot/dts/exynos5.dtsi| 5 +
arch/arm/boot/dts/exynos5250.dtsi | 5 +
arch/arm/boot/dts/exynos5410.dtsi | 5 +
arch/arm/bo
It was <2017-12-06 śro 16:28>, when Krzysztof Kozlowski wrote:
> On Wed, Dec 6, 2017 at 3:53 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> It was <2017-12-06 śro 15:05>, when Krzysztof Kozlowski wrote:
>>> On Wed, Dec 6, 2017 at 2:42 PM,
om accessing the hardware at the
same time.
The sequence of mutex_lock() and mutex_unlock() in the exynos_rng_reseed()
function enables switching between different threads waiting for the
driver to generate random numbers for them.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
-
h worse than in a loop without cpu_relax().
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
drivers/crypto/exynos-rng.c | 36 +---
1 file changed, 5 insertions(+), 31 deletions(-)
diff --git a/drivers/crypto/exynos-rng.c b/drivers/crypto/exynos-rng.c
Cc: Marek Szyprowski <m.szyprow...@samsung.com>, Bartlomiej Zolnierkiewicz
<b.zolnier...@samsung.com>
Add support for PRNG in Exynos5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
.../bindings/crypto/samsung,exynos-rng4.txt| 4 ++-
drivers/c
enum and a define according to Krzysztof Kozłowski's
recommendations.
- Brought back cpu_relax() in a rearranged loop in
exynos_rng_get_random().
- Moved an assignment of the read valuea away from an error path.
- Removed dev_info() reporting hardware presence from
exynos_rng_probe().
Łukasz
but it helps preventing
backtracking the internal state of the device from its output sequence,
and hence, prevents potential attacker from predicting numbers to be
generated.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
Reviewed-by: Stephan Mueller <smuel...@chronox.de>
---
dri
It was <2017-12-05 wto 19:06>, when Krzysztof Kozlowski wrote:
> On Tue, Dec 5, 2017 at 6:53 PM, Krzysztof Kozlowski <k...@kernel.org> wrote:
>> On Tue, Dec 05, 2017 at 05:43:10PM +0100, Łukasz Stelmach wrote:
>>> It was <2017-12-05 wto 14:54>, when Stepha
Use memcpy_fromio() instead of custom exynos_rng_copy_random() function
to retrieve generated numbers from the registers of PRNG.
Remove unnecessary invocation of cpu_relax().
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
drivers/crypto/exynos-rng.
Add support for PRNG in Exynos5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
.../bindings/crypto/samsung,exynos-rng4.txt| 4 ++-
drivers/crypto/exynos-rng.c| 36 --
2 files changed, 36 insertions(+), 4 del
Reseed PRNG after reading 65 kB of randomness. Although this may reduce
performance, in most casese the loss is not noticable.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
drivers/crypto/exynos-rng.c | 18 ++
1 file changed, 14 insertions(+), 4 deletions(-)
output performance by using memcpy() rather than a
custom function to retriev random bytes from registers.
Patch #3 Reseed the PRNG after reading 2^16 bytes. Simmilar approach
is implemented in DRBG. (Thanks Stephan Mueller)
Łukasz Stelmach (3):
crypto: exynos - Support Exynos5250+ SoCs
crypto
exynos-rng is one of many implementations of stdrng. With priority as
low as 100 it isn't selected, if software implementations (DRBG) are
available.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
If not 1000, what is the best value, what is the policy?
drivers/crypto/
It was <2017-12-06 śro 12:37>, when Krzysztof Kozlowski wrote:
> On Wed, Dec 6, 2017 at 12:32 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> It was <2017-12-05 wto 19:06>, when Krzysztof Kozlowski wrote:
>>> On Tue, Dec 5, 2017 at 6:53 PM, Krzy
It was <2017-12-05 wto 14:34>, when Krzysztof Kozlowski wrote:
> On Tue, Dec 5, 2017 at 1:35 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> Add support for PRNG in Exynos5250+ SoCs.
>>
>> Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com&
Add nodes for the True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
Changes since v3:
- Rebased accroding to Krzysztof Kozłowski's request
arch/arm/boot/dts/exynos5.dtsi| 5 +
arch/arm/boot/dts/exynos525
It was <2017-12-11 pon 15:54>, when Krzysztof Kozlowski wrote:
> On Mon, Dec 11, 2017 at 3:06 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> Cc: Marek Szyprowski <m.szyprow...@samsung.com>, Bartlomiej
>> Zolnierkiewicz <b.zolnier...@samsu
It was <2017-12-11 pon 16:03>, when Krzysztof Kozlowski wrote:
> On Mon, Dec 11, 2017 at 3:06 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> Cc: Marek Szyprowski <m.szyprow...@samsung.com>, Bartlomiej Zolnierkiewicz
>> <b.zolnier...@samsung.com&
It was <2017-12-11 pon 19:49>, when Krzysztof Kozlowski wrote:
> On Mon, Dec 04, 2017 at 01:53:51PM +0100, Łukasz Stelmach wrote:
>> Add nodes for the True Random Number Generator found in Samsung Exynos
>> 5250+ SoCs.
>>
>> Signed-off-by: Łukasz Stelmach <l.s
It was <2017-12-06 śro 15:05>, when Krzysztof Kozlowski wrote:
> On Wed, Dec 6, 2017 at 2:42 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> It was <2017-12-05 wto 14:34>, when Krzysztof Kozlowski wrote:
>>> On Tue, Dec 5, 2017 at 1:35 PM,
*trng;
> - u32 val;
> + int val;
>
> max = min_t(size_t, max, (EXYNOS_TRNG_FIFO_LEN * 4));
Fixed.
https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git/commit/?id=a8bc71d4960391f732ec0307ebd69e4a25aaf4d3
--
Łukasz Stelmach
Samsung R Institute Poland
Samsung Electronics
signature.asc
Description: PGP signature
It was <2017-12-22 pią 09:35>, when Herbert Xu wrote:
> On Fri, Dec 22, 2017 at 09:29:38AM +0100, Marek Szyprowski wrote:
>> Hi,
>>
>> On 2017-12-22 09:24, Herbert Xu wrote:
>> >On Mon, Dec 04, 2017 at 01:53:50PM +0100, Łukasz Stelmach wrote:
>> >
Add support for True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k...@kernel.org>
---
Changes since v3:
- Fixed typo in the secongd argument of MODULE_DEVICE_TABLE
(Thanks
It was <2017-12-22 pią 14:34>, when Philippe Ombredanne wrote:
> Łukasz,
>
> On Fri, Dec 22, 2017 at 2:23 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> Add support for True Random Number Generator found in Samsung Exynos
>> 5250+ SoCs.
>>
Add support for True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k...@kernel.org>
---
Changes since v4:
- SPDX license header instead of the traditional blurb.
- MODULE_LIC
It was <2017-12-22 pią 19:30>, when Philippe Ombredanne wrote:
> On Fri, Dec 22, 2017 at 5:38 PM, Łukasz Stelmach <l.stelm...@samsung.com>
> wrote:
>> It was <2017-12-22 pią 14:34>, when Philippe Ombredanne wrote:
>>> Łukasz,
>>>
>>>
Hypervisor setup before __enter_kernel destroys the value sotred in
r1. The value needs to be restored just before the jump.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
arch/arm/boot/compressed/head.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git
In commit 639da5ee374b an additional temporary register was added
to the addruart macro, but the decompressor code wasn't updated.
Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com>
---
arch/arm/boot/compressed/head.S | 16
1 file changed, 8 insertions(+), 8 del
It was <2018-09-29 sob 00:03>, when Joe Perches wrote:
> Please fix this defect appropriately.
>
> linux-next MAINTAINERS section:
>
> 12851 SAMSUNG EXYNOS TRUE RANDOM NUMBER GENERATOR (TRNG) DRIVER
> 12852 M: Łukasz Stelmach
> 12
Add binding documentation for the True Random Number Generator
found on Samsung Exynos 5250+ SoCs.
Signed-off-by: Łukasz Stelmach
---
.../bindings/rng/samsung,exynos5250-trng.txt| 17 +
1 file changed, 17 insertions(+)
create mode 100644
Documentation/devicetree/bindings
Add binding documentation for the True Random Number Generator
found on Samsung Exynos 5250+ SoCs.
Acked-by: Rob Herring
Reviewed-by: Krzysztof Kozlowski
Signed-off-by: Łukasz Stelmach
---
This time with proper tags, as requested.
Kind regards,
ŁS
.../bindings/rng/samsung,exynos5250
3.45% [.] 0x118c
2.94% [.] strncpy
2.67% [.] vfprintf
2.44% [k] strcmp
|
--- smk_find_entry
smk_import_entry
smk_import
In commit 639da5ee374b an additional temporary register was added
to the addruart macro, but the decompressor code wasn't updated.
Signed-off-by: Łukasz Stelmach
---
arch/arm/boot/compressed/head.S | 16
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/arch/arm
It was <2017-12-04 pon 14:13>, when Krzysztof Kozlowski wrote:
> On Mon, Dec 4, 2017 at 1:53 PM, Łukasz Stelmach
> wrote:
>> Add binding documentation for the True Random Number Generator
>> found on Samsung Exynos 5250+ SoCs.
>>
>> Signed-off-by: Łukasz
output performance by using memcpy() rather than a
custom function to retriev random bytes from registers.
Patch #3 Reseed the PRNG after reading 2^16 bytes. Simmilar approach
is implemented in DRBG. (Thanks Stephan Mueller)
Łukasz Stelmach (3):
crypto: exynos - Support Exynos5250+ SoCs
crypto
Add support for PRNG in Exynos5250+ SoCs.
Signed-off-by: Łukasz Stelmach
---
.../bindings/crypto/samsung,exynos-rng4.txt| 4 ++-
drivers/crypto/exynos-rng.c| 36 --
2 files changed, 36 insertions(+), 4 deletions(-)
diff --git a/Documentation
Reseed PRNG after reading 65 kB of randomness. Although this may reduce
performance, in most casese the loss is not noticable.
Signed-off-by: Łukasz Stelmach
---
drivers/crypto/exynos-rng.c | 18 ++
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/crypto
Use memcpy_fromio() instead of custom exynos_rng_copy_random() function
to retrieve generated numbers from the registers of PRNG.
Remove unnecessary invocation of cpu_relax().
Signed-off-by: Łukasz Stelmach
---
drivers/crypto/exynos-rng.c | 36 +---
1 file
exynos-rng is one of many implementations of stdrng. With priority as
low as 100 it isn't selected, if software implementations (DRBG) are
available.
Signed-off-by: Łukasz Stelmach
---
If not 1000, what is the best value, what is the policy?
drivers/crypto/exynos-rng.c | 2 +-
1 file changed
in the kernel command line).
Signed-off-by: Łukasz Stelmach
---
Thank you Stephan Mueller for explanations.
drivers/crypto/exynos-rng.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/exynos-rng.c b/drivers/crypto/exynos-rng.c
index 4b2ed1d178af..5a37397fb1c5 100644
It was <2017-12-05 wto 14:54>, when Stephan Mueller wrote:
> Am Dienstag, 5. Dezember 2017, 13:35:57 CET schrieb Łukasz Stelmach:
>
> Hi Łukasz,
>
>> Use memcpy_fromio() instead of custom exynos_rng_copy_random() function
>> to retrieve generated numbers from the re
It was <2017-12-05 wto 19:06>, when Krzysztof Kozlowski wrote:
> On Tue, Dec 5, 2017 at 6:53 PM, Krzysztof Kozlowski wrote:
>> On Tue, Dec 05, 2017 at 05:43:10PM +0100, Łukasz Stelmach wrote:
>>> It was <2017-12-05 wto 14:54>, when Stephan Mueller wrote:
>>>
It was <2017-12-06 śro 12:37>, when Krzysztof Kozlowski wrote:
> On Wed, Dec 6, 2017 at 12:32 PM, Łukasz Stelmach
> wrote:
>> It was <2017-12-05 wto 19:06>, when Krzysztof Kozlowski wrote:
>>> On Tue, Dec 5, 2017 at 6:53 PM, Krzysztof Kozlowski wrote:
>&g
It was <2017-12-05 wto 14:34>, when Krzysztof Kozlowski wrote:
> On Tue, Dec 5, 2017 at 1:35 PM, Łukasz Stelmach
> wrote:
>> Add support for PRNG in Exynos5250+ SoCs.
>>
>> Signed-off-by: Łukasz Stelmach
>> ---
>> .../bindings/crypto/samsung,exynos-r
It was <2017-12-06 śro 15:05>, when Krzysztof Kozlowski wrote:
> On Wed, Dec 6, 2017 at 2:42 PM, Łukasz Stelmach
> wrote:
>> It was <2017-12-05 wto 14:34>, when Krzysztof Kozlowski wrote:
>>> On Tue, Dec 5, 2017 at 1:35 PM, Łukasz Stelmach
>>> wrot
It was <2017-12-22 pią 09:35>, when Herbert Xu wrote:
> On Fri, Dec 22, 2017 at 09:29:38AM +0100, Marek Szyprowski wrote:
>> Hi,
>>
>> On 2017-12-22 09:24, Herbert Xu wrote:
>> >On Mon, Dec 04, 2017 at 01:53:50PM +0100, Łukasz Stelmach wrote:
>> >
Add support for True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach
Reviewed-by: Krzysztof Kozlowski
---
Changes since v3:
- Fixed typo in the secongd argument of MODULE_DEVICE_TABLE
(Thanks, Herbert Xu)
MAINTAINERS | 7
It was <2017-12-22 pią 14:34>, when Philippe Ombredanne wrote:
> Łukasz,
>
> On Fri, Dec 22, 2017 at 2:23 PM, Łukasz Stelmach
> wrote:
>> Add support for True Random Number Generator found in Samsung Exynos
>> 5250+ SoCs.
>>
>> Signed-off-by: Łukasz Ste
Add support for True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach
Reviewed-by: Krzysztof Kozlowski
---
Changes since v4:
- SPDX license header instead of the traditional blurb.
- MODULE_LICENSE("GPL v2") instead of "GPL"
It was <2017-12-22 pią 19:30>, when Philippe Ombredanne wrote:
> On Fri, Dec 22, 2017 at 5:38 PM, Łukasz Stelmach
> wrote:
>> It was <2017-12-22 pią 14:34>, when Philippe Ombredanne wrote:
>>> Łukasz,
>>>
>>> On Fri, Dec 22, 2017 at 2:23 PM, Łuk
Hypervisor setup before __enter_kernel destroys the value sotred in
r1. The value needs to be restored just before the jump.
Signed-off-by: Łukasz Stelmach
---
arch/arm/boot/compressed/head.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/compressed/head.S
It was <2017-12-06 śro 16:28>, when Krzysztof Kozlowski wrote:
> On Wed, Dec 6, 2017 at 3:53 PM, Łukasz Stelmach
> wrote:
>> It was <2017-12-06 śro 15:05>, when Krzysztof Kozlowski wrote:
>>> On Wed, Dec 6, 2017 at 2:42 PM, Łukasz Stelmach
>>> wrote
Add support for True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach
---
MAINTAINERS | 7 +
drivers/char/hw_random/Kconfig | 12 ++
drivers/char/hw_random/Makefile | 1 +
drivers/char/hw_random/exynos-trng.c
Hello.
The following patches add support for the true random number generator
found in Samsung Exynos 5250+ SoCs.
Patch #1 adds documentation for devicetree bindings.
Patch #2 introduces the driver and appropriate changes in Makefile and Kconfig.
Patch #3 adds nodes in devicetree files for
Add nodes for the True Random Number Generator found in Samsung Exynos
5250+ SoCs.
Signed-off-by: Łukasz Stelmach
---
arch/arm/boot/dts/exynos5.dtsi| 5 +
arch/arm/boot/dts/exynos5250.dtsi | 5 +
arch/arm/boot/dts/exynos5410.dtsi | 5 +
arch/arm/boot/dts/exynos5420.dtsi | 5
Add binding documentation for the True Random Number Generator
found on Samsung Exynos 5250+ SoCs.
Signed-off-by: Łukasz Stelmach
---
.../devicetree/bindings/rng/samsung,exynos5250-trng.txt | 17 +
1 file changed, 17 insertions(+)
create mode 100644
Documentation/devicetree
from its output sequence,
and hence, prevents potential attacker from predicting numbers to be
generated.
Signed-off-by: Łukasz Stelmach
Reviewed-by: Stephan Mueller
---
drivers/crypto/exynos-rng.c | 15 +++
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/crypto
of
PRNG. The do {} while () loop decrements the retry variable only once,
which means, the time required for cpu_relax() is long enough to for
the PRNG to provide results. On the other hand, performance in this
arrangement isn't much worse than in a loop without cpu_relax().
Signed-off-by: Łukasz
Cc: Marek Szyprowski , Bartlomiej Zolnierkiewicz
Add support for PRNG in Exynos5250+ SoCs.
Signed-off-by: Łukasz Stelmach
---
.../bindings/crypto/samsung,exynos-rng4.txt| 4 ++-
drivers/crypto/exynos-rng.c| 32 --
2 files changed, 33
enum and a define according to Krzysztof Kozłowski's
recommendations.
- Brought back cpu_relax() in a rearranged loop in
exynos_rng_get_random().
- Moved an assignment of the read valuea away from an error path.
- Removed dev_info() reporting hardware presence from
exynos_rng_probe().
Łukasz
of mutex_lock() and mutex_unlock() in the exynos_rng_reseed()
function enables switching between different threads waiting for the
driver to generate random numbers for them.
Signed-off-by: Łukasz Stelmach
---
drivers/crypto/exynos-rng.c | 21 +
1 file changed, 21 insertions(+)
diff
It was <2017-12-11 pon 16:03>, when Krzysztof Kozlowski wrote:
> On Mon, Dec 11, 2017 at 3:06 PM, Łukasz Stelmach
> wrote:
>> Cc: Marek Szyprowski , Bartlomiej Zolnierkiewicz
>>
>>
>> Hardware operations like reading random numbers and setting a seed need
&
It was <2017-12-11 pon 19:49>, when Krzysztof Kozlowski wrote:
> On Mon, Dec 04, 2017 at 01:53:51PM +0100, Łukasz Stelmach wrote:
>> Add nodes for the True Random Number Generator found in Samsung Exynos
>> 5250+ SoCs.
>>
>> Signed-off-by: Łukasz Stelmach
>
for Exynos SoCs.
Łukasz Stelmach (3):
dt-bindings: hwrng: Add Samsung Exynos 5250+ True RNG bindings
hwrng: exynos - add Samsung Exynos True RNG driver
ARM: dts: exynos: Add nodes for True Random Number Generator
.../bindings/rng/samsung,exynos5250-trng.txt | 17 ++
MAINTAINERS
Add binding documentation for the True Random Number Generator
found on Samsung Exynos 5250+ SoCs.
Signed-off-by: Łukasz Stelmach
---
.../devicetree/bindings/rng/samsung,exynos5250-trng.txt | 17 +
1 file changed, 17 insertions(+)
create mode 100644
Documentation/devicetree
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