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-rw-r--r--Documentation/admin-guide/kernel-parameters.txt3
-rw-r--r--arch/arm64/kernel/idreg-override.c2
2 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 9e5bab29685f..e01fbfd78ae9 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -429,6 +429,9 @@
arm64.nosme [ARM64] Unconditionally disable Scalable Matrix
Extension support
+ arm64.nomops [ARM64] Unconditionally disable Memory Copy and Memory
+ Set instructions support
+
ataflop= [HW,M68k]
atarimouse= [HW,MOUSE] Atari Mouse
diff --git a/arch/arm64/kernel/idreg-override.c b/arch/arm64/kernel/idreg-override.c
index 370ab84fd06e..8439248c21d3 100644
--- a/arch/arm64/kernel/idreg-override.c
+++ b/arch/arm64/kernel/idreg-override.c
@@ -123,6 +123,7 @@ static const struct ftr_set_desc isar2 __initconst = {
.fields = {
FIELD("gpa3", ID_AA64ISAR2_EL1_GPA3_SHIFT, NULL),
FIELD("apa3", ID_AA64ISAR2_EL1_APA3_SHIFT, NULL),
+ FIELD("mops", ID_AA64ISAR2_EL1_MOPS_SHIFT, NULL),
{}
},
};
@@ -174,6 +175,7 @@ static const struct {
"id_aa64isar1.gpi=0 id_aa64isar1.gpa=0 "
"id_aa64isar1.api=0 id_aa64isar1.apa=0 "
"id_aa64isar2.gpa3=0 id_aa64isar2.apa3=0" },
+ { "arm64.nomops", "id_aa64isar2.mops=0" },
{ "arm64.nomte", "id_aa64pfr1.mte=0" },
{ "nokaslr", "kaslr.disabled=1" },
};