diff --git a/sdk_container/src/third_party/portage-stable/dev-debug/gdb/gdb-9999.ebuild b/sdk_container/src/third_party/portage-stable/dev-debug/gdb/gdb-9999.ebuild
index fd7672efde..5943d0668e 100644
--- a/sdk_container/src/third_party/portage-stable/dev-debug/gdb/gdb-9999.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-debug/gdb/gdb-9999.ebuild
@@ -77,7 +77,7 @@ SRC_URI="
 
 LICENSE="GPL-3+ LGPL-2.1+"
 SLOT="0"
-IUSE="babeltrace cet debuginfod guile lzma multitarget nls +python rocm +server sim source-highlight test vanilla xml xxhash zstd"
+IUSE="babeltrace cet debuginfod guile lzma multitarget nls +python rocm +server sim source-highlight test vanilla +xml xxhash zstd"
 if [[ -n ${REGULAR_RELEASE} ]] ; then
 	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~x64-macos ~x64-solaris"
 fi
@@ -138,6 +138,7 @@ pkg_setup() {
 	if [[ ${CHOST} == *-linux-* ]] ; then
 		if kernel_is -ge 6.11.3 ; then
 			# https://forums.gentoo.org/viewtopic-p-8846891.html
+			# See also PR31520.
 			#
 			# Either CONFIG_PROC_MEM_ALWAYS_FORCE or CONFIG_PROC_MEM_FORCE_PTRACE
 			# should be okay, but not CONFIG_PROC_MEM_NO_FORCE.