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docs: kernel: K_FP_REGS is not x86 only

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We have more architectures support float now.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This commit is contained in:
Anas Nashif 2019-09-19 18:25:44 -04:00
commit 25cd3f9f54
1 changed files with 12 additions and 6 deletions
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18
doc/reference/kernel/threads/index.rst
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@ -146,15 +146,21 @@ The following thread options are supported.
By default, the thread is not considered to be an essential thread.
:c:macro:`K_FP_REGS` and :c:macro:`K_SSE_REGS`
These x86-specific options indicate that the thread uses the CPU's
floating point registers and SSE registers, respectively. This instructs
the kernel to take additional steps to save and restore the contents
of these registers when scheduling the thread.
:c:macro:`K_SSE_REGS`
This x86-specific option indicate that the thread uses the CPU's
SSE registers. Also see :c:macro:`K_FP_REGS`.
By default, the kernel does not attempt to save and restore the contents
of this register when scheduling the thread.
:c:macro:`K_FP_REGS`
This option indicate that the thread uses the CPU's floating point
registers. This instructs the kernel to take additional steps to save
and restore the contents of these registers when scheduling the thread.
(For more information see :ref:`float_v2`.)
By default, the kernel does not attempt to save and restore the contents
of these registers when scheduling the thread.
of this register when scheduling the thread.
:c:macro:`K_USER`
If :option:`CONFIG_USERSPACE` is enabled, this thread will be created in