commit 72aaeca527a81625f5c2316b996d34247f5954ea
author Andrew Walbran <qwandor@google.com> Wed Sep 26 14:01:09 2018 +0100
committer Andrew Walbran <qwandor@google.com> Fri Sep 28 18:23:49 2018 +0100
tree d16366d965ae40761c048db5424efceefe50a5b7
parent f3f85e60e22a492a9fcd3d00940d8aa6eb7d3b1b

Adding some comments about how we treat page entries the same as blocks.

Change-Id: Ic42188cf513e9e7d0332d0ddba60ec8437268ef8

src/arch/aarch64/inc/hf/arch/mm.h

diff --git a/src/arch/aarch64/inc/hf/arch/mm.h b/src/arch/aarch64/inc/hf/arch/mm.h
index fd50f67..cc02cbd 100644
--- a/src/arch/aarch64/inc/hf/arch/mm.h
+++ b/src/arch/aarch64/inc/hf/arch/mm.h
@@ -43,6 +43,7 @@
 {
 	pte_t pte = pa_addr(pa) | attrs;
 	if (level == 0) {
+		/* A level 0 'block' is actually a page entry. */
 		pte |= 0x2;
 	}
 	return pte;
@@ -80,6 +81,7 @@
  */
 static inline bool arch_mm_pte_is_block(pte_t pte, int level)
 {
+	/* We count pages at level 0 as blocks. */
 	return arch_mm_is_block_allowed(level) &&
 	       (pte & 0x3) == (level == 0 ? 0x3 : 0x1);
 }