Merge branch 'for-4.12/asus' into for-linus

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c
index 4c63cb154859..68634c630cdd 100644
--- a/arch/arm64/mm/context.c
+++ b/arch/arm64/mm/context.c
@@ -79,6 +79,13 @@ void verify_cpu_asid_bits(void)
 	}
 }
 
+static void set_reserved_asid_bits(void)
+{
+	if (IS_ENABLED(CONFIG_QCOM_FALKOR_ERRATUM_1003) &&
+	    cpus_have_const_cap(ARM64_WORKAROUND_QCOM_FALKOR_E1003))
+		__set_bit(FALKOR_RESERVED_ASID, asid_map);
+}
+
 static void flush_context(unsigned int cpu)
 {
 	int i;
@@ -87,6 +94,8 @@ static void flush_context(unsigned int cpu)
 	/* Update the list of reserved ASIDs and the ASID bitmap. */
 	bitmap_clear(asid_map, 0, NUM_USER_ASIDS);
 
+	set_reserved_asid_bits();
+
 	/*
 	 * Ensure the generation bump is observed before we xchg the
 	 * active_asids.
@@ -244,6 +253,8 @@ static int asids_init(void)
 		panic("Failed to allocate bitmap for %lu ASIDs\n",
 		      NUM_USER_ASIDS);
 
+	set_reserved_asid_bits();
+
 	pr_info("ASID allocator initialised with %lu entries\n", NUM_USER_ASIDS);
 	return 0;
 }