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kernel: expose k_mem_partition_attr_t outside User mode

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This commit exposes k_mem_partition_attr_t outside User Mode, so
we can use struct k_mem_partition for defining memory partitions
outside the scope of user space (for example, to describe thread
stack guards or no-cacheable MPU regions). A requirement is that
the Zephyr build supports Memory protection. To signify this, a
new hidden, all-architecture Kconfig symbol is defined (MPU). In
the wake of exposing k_mem_partition_attr_t, the commit exposes
the MPU architecture-specific access permission attribute macros
outside the User space context (for all ARCHs), so they can be
used in a more generic way.

Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>
This commit is contained in:
Ioannis Glaropoulos 2018-11-27 15:45:36 +01:00 • committed by Anas Nashif
commit 39bf24a9bd
10 changed files with 18 additions and 13 deletions
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4
include/kernel.h
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@ -4781,10 +4781,10 @@ struct k_mem_partition {
u32_t start;
/* size of memory partition */
u32_t size;
#ifdef CONFIG_USERSPACE
#if defined(CONFIG_MEMORY_PROTECTION)
/* attribute of memory partition */
k_mem_partition_attr_t attr;
#endif /* CONFIG_USERSPACE */
#endif /* CONFIG_MEMORY_PROTECTION */
};
/* memory domain