Add description of work queues to the porting guide. Update comments

2 files changed, 8 insertions, 2 deletions

diff --git a/nuttx/binfmt/libelf/libelf_load.c b/nuttx/binfmt/libelf/libelf_load.c
index 95d46999a..385d3355f 100644
--- a/nuttx/binfmt/libelf/libelf_load.c
+++ b/nuttx/binfmt/libelf/libelf_load.c
@@ -264,7 +264,10 @@ int elf_load(FAR struct elf_loadinfo_s *loadinfo)
   elf_elfsize(loadinfo);
 
   /* Determine the heapsize to allocate.  heapsize is ignored if there is
-   * no address environment.
+   * no address environment because the heap is a shared resource in that
+   * case.  If there is no dynamic stack then heapsize must at least as big
+   * as the fixed stack size since the stack will be allocated from the heap
+   * in that case.
    */
 
 #if !defined(CONFIG_ARCH_ADDRENV)
diff --git a/nuttx/binfmt/libnxflat/libnxflat_addrenv.c b/nuttx/binfmt/libnxflat/libnxflat_addrenv.c
index c7e82f537..371a93404 100644
--- a/nuttx/binfmt/libnxflat/libnxflat_addrenv.c
+++ b/nuttx/binfmt/libnxflat/libnxflat_addrenv.c
@@ -108,7 +108,10 @@ int nxflat_addrenv_alloc(FAR struct nxflat_loadinfo_s *loadinfo, size_t envsize)
     }
 
 #ifdef CONFIG_ARCH_ADDRENV
-  /* Determine the heapsize to allocate */
+  /* Determine the heapsize to allocate. If there is no dynamic stack then
+   * heapsize must at least as big as the fixed stack size since the stack
+   * will be allocated from the heap in that case.
+   */
 
 #ifdef CONFIG_ARCH_STACK_DYNAMIC
   heapsize = ARCH_HEAP_SIZE;