diff --git a/doc/.known-issues/doc/hypercall.conf b/doc/.known-issues/doc/hypercall.conf
index 2bfe3c1ad..bdc4d9def 100644
--- a/doc/.known-issues/doc/hypercall.conf
+++ b/doc/.known-issues/doc/hypercall.conf
@@ -23,7 +23,7 @@
 ^[- \t]*\^
 #
 ^(?P<filename>[-._/\w]+/api/hypercall_api.rst):(?P<lineno>[0-9]+): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
-^.*union hc_ptdev_irq::\@[01]  hc_ptdev_irq::is
+^.*union hc_ptdev_irq::\@[012]  hc_ptdev_irq::is
 ^[- \t]*\^
 ^(?P=filename):(?P=lineno): WARNING: Invalid definition: Expected identifier in nested name. \[error at [0-9]+]
 ^[ \t]*
diff --git a/doc/acrn.doxyfile b/doc/acrn.doxyfile
index 19ad47d41..bf5021a49 100644
--- a/doc/acrn.doxyfile
+++ b/doc/acrn.doxyfile
@@ -791,6 +791,10 @@ WARN_LOGFILE           =
 # Note: If this tag is empty the current directory is searched.
 
 INPUT                  =  custom-doxygen/mainpage.md \
+                          ../hypervisor/include/arch/x86/guest/guest.h \
+                          ../hypervisor/include/arch/x86/mmu.h \
+                          ../hypervisor/include/arch/x86/mtrr.h \
+                          ../hypervisor/include/arch/x86/pgtable.h \
                           ../hypervisor/include/common/hypercall.h \
                           ../hypervisor/include/public/acrn_common.h \
                           ../hypervisor/include/public/acrn_hv_defs.h \
@@ -2070,6 +2074,7 @@ PREDEFINED             = "__attribute__(x)=" \
                          "__deprecated=" \
                          "__aligned(x)=" \
                          "__packed=" \
+                         "__unused=" \
                          "__printf_like(x, y)="
 
 # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this