zephyr/doc/reference/kernel/other
Nicolas Pitre f1f63dda17 arm64: FPU context switching support
This adds FPU sharing support with a lazy context switching algorithm.

Every thread is allowed to use FPU/SIMD registers. In fact, the compiler
may insert FPU reg accesses in anycontext to optimize even non-FP code
unless the -mgeneral-regs-only compiler flag is used, but Zephyr
currently doesn't support such a build.

It is therefore possible to do FP access in IRS as well with this patch
although IRQs are then disabled to prevent nested IRQs in such cases.

Because the thread object grows in size, some tests have to be adjusted.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
2021-05-03 11:56:50 +02:00
..
atomic.rst arch/xtensa: Inline atomics 2021-03-08 11:14:27 -05:00
cpu_idle.rst doc: reference: kernel: remove inconsistent comment for k_cpu_idle 2020-03-20 11:53:14 +01:00
cxx_support.rst
fatal.rst toolchain: common: Merge build assert macros 2020-03-31 07:18:06 +02:00
float.rst arm64: FPU context switching support 2021-05-03 11:56:50 +02:00
interrupts.rst doc: kernel: clarify object limits 2020-11-19 13:18:59 -05:00
polling.rst tests: poll: revised document error 2021-05-03 11:56:22 +02:00
version.rst