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kernel: userspace: aligned memory allocation for dynamic objects #30762

Merged
merged 3 commits into from
Jan 13, 2021
Merged

kernel: userspace: aligned memory allocation for dynamic objects #30762

merged 3 commits into from
Jan 13, 2021

Commits on Jan 12, 2021

  1. kernel: mempool: add z_thread_aligned_alloc 

    This adds a new z_thread_aligned_alloc() to do memory allocation
with required alignment.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
    @dcpleung
    dcpleung committed Jan 12, 2021
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  2. kernel: userspace: aligned memory allocation for dynamic objects 

    This allows allocating dynamic kernel objects with memory alignment
requirements. The first candidate is for thread objects where,
on some architectures, it must be aligned for saving/restoring
registers.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
    @dcpleung
    dcpleung committed Jan 12, 2021
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  3. x86: define dynamic thread object alignment 

    x86 and x86_64 require certain alignment in the k_thread struct
since the buffer to save/restore FPU/SSE registers requires
strict alignment.

Fixes zephyrproject-rtos#29589
Fixes zephyrproject-rtos#29629

Signed-off-by: Daniel Leung <daniel.leung@intel.com>
    @dcpleung
    dcpleung committed Jan 12, 2021
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