1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/base/cacheinfo.c b/drivers/base/cacheinfo.c
index a7359535caf5..8827c60f51e2 100644
--- a/drivers/base/cacheinfo.c
+++ b/drivers/base/cacheinfo.c
@@ -213,6 +213,8 @@ int __weak cache_setup_acpi(unsigned int cpu)
         return -ENOTSUPP;
 }
 
+unsigned int coherency_max_size;
+
 static int cache_shared_cpu_map_setup(unsigned int cpu)
 {
         struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
@@ -251,6 +253,9 @@ static int cache_shared_cpu_map_setup(unsigned int cpu)
                                 cpumask_set_cpu(i, &this_leaf->shared_cpu_map);
                         }
                 }
+                /* record the maximum cache line size */
+                if (this_leaf->coherency_line_size > coherency_max_size)
+                        coherency_max_size = this_leaf->coherency_line_size;
         }
 
         return 0;