Hi Catalin,
On 6/3/19 10:21 PM, Catalin Marinas wrote:
On Mon, Jun 03, 2019 at 05:25:34PM +0100, Catalin Marinas wrote:
On Tue, May 21, 2019 at 06:21:39PM +0100, Julien Grall wrote:
Since a softirq is supposed to check may_use_simd() anyway before
attempting to use FPSIMD/SVE, there is
On Mon, Jun 03, 2019 at 05:25:34PM +0100, Catalin Marinas wrote:
> On Tue, May 21, 2019 at 06:21:39PM +0100, Julien Grall wrote:
> > Since a softirq is supposed to check may_use_simd() anyway before
> > attempting to use FPSIMD/SVE, there is limited reason to keep softirq
> > disabled when
On Tue, May 21, 2019 at 06:21:39PM +0100, Julien Grall wrote:
> Since a softirq is supposed to check may_use_simd() anyway before
> attempting to use FPSIMD/SVE, there is limited reason to keep softirq
> disabled when touching the FPSIMD/SVE context. Instead, we can simply
> disable preemption and
When the kernel is compiled with CONFIG_KERNEL_MODE_NEON, some part of
the kernel may be able to use FPSIMD/SVE. This is for instance the case
for crypto code.
Any use of FPSIMD/SVE in the kernel are clearly marked by using the
function kernel_neon_{begin, end}. Furthermore, this can only be used
