aarch64: check if page is writeable for DC IVAC #1041
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When performing data cache invalidate by virtual address, the mapping must have write permissions otherwise a fault will be generated. When the kernel performs this operation during cache maintenance invocations it must first check that the mapping has write rights in the decode phase of the operation. Signed-off-by: Kent McLeod <kent@kry10.com>
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When performing data cache invalidate by virtual address, the mapping must have write permissions otherwise a fault will be generated. When the kernel performs this operation during cache maintenance invocations it must first check that the mapping has write rights in the decode phase of the operation.
This is a suggested starting point of a fix for #214