On Thu, Aug 23, 2018 at 04:39:23PM -0400, Mikulas Patocka wrote:
>
> 1. don't set CRYPTO_TFM_REQ_MAY_SLEEP in dm-crypt
> =
> If we don't set it, dm-crypt will use GFP_ATOMIC and GFP_ATOMIC may fail.
> The function init_crypt in xts.c handles the fail
On Thu, Aug 23, 2018 at 05:31:01PM +0200, Petr Vorel wrote:
> Hi,
>
> I wonder, it it makes sense to backport commit
> e666d4e9ceec crypto: vmx - Use skcipher for ctr fallback
> to v 4.14 stable kernel.
> I'm using it in 4.12+.
>
> These commits (somehow similar) has been backported to 4.10.2:
>
On 23 August 2018 at 21:04, Nick Desaulniers wrote:
> On Thu, Aug 23, 2018 at 9:48 AM Ard Biesheuvel
> wrote:
>>
>> Replace the literal load of the addend vector with a sequence that
>> performs each add individually. This sequence is only 2 instructions
>> longer than the original, and 2% faster
Hi
There's a deadlock reported here:
https://bugzilla.kernel.org/show_bug.cgi?id=200835
* dm-crypt calls crypt_convert in xts mode
* init_crypt from xts.c calls kmalloc(GFP_KERNEL)
* kmalloc(GFP_KERNEL) recurses into the XFS filesystem, the filesystem
tries to submit some bios and wait
On 2018-08-22 21:04, Marcelo Henrique Cerri wrote:
That looks good to me. Maybe Paulo can help testing it.
--
Regards,
Marcelo
On Wed, Aug 22, 2018 at 08:26:31AM +0200, Ondrej Mosnacek wrote:
This patch fixes sleep-in-atomic bugs in AES-CBC and AES-XTS VMX
implementations. The problem is that
On Thu, Aug 23, 2018 at 9:48 AM Ard Biesheuvel
wrote:
>
> Replace the literal load of the addend vector with a sequence that
> performs each add individually. This sequence is only 2 instructions
> longer than the original, and 2% faster on Cortex-A53.
>
> This is an improvement by itself, but als
Replace the literal load of the addend vector with a sequence that
performs each add individually. This sequence is only 2 instructions
longer than the original, and 2% faster on Cortex-A53.
This is an improvement by itself, but also works around a Clang issue,
whose integrated assembler does not
Hi,
I wonder, it it makes sense to backport commit
e666d4e9ceec crypto: vmx - Use skcipher for ctr fallback
to v 4.14 stable kernel.
I'm using it in 4.12+.
These commits (somehow similar) has been backported to 4.10.2:
5839f555fa57 crypto: vmx - Use skcipher for xts fallback
c96d0a1c47ab crypto:
Speed up the GHASH algorithm based on 64-bit polynomial multiplication
by adding support for 4-way aggregation. This improves throughput by
~85% on Cortex-A53, from 1.7 cycles per byte to 0.9 cycles per byte.
When combined with AES into GCM, throughput improves by ~25%, from
3.8 cycles per byte to
