From 57b6a317bb0ed7c7d2937b477ba9fb8a2ba50bae Mon Sep 17 00:00:00 2001
From: Markus Lehtonen <markus.lehtonen@intel.com>
Date: Thu, 31 Jul 2025 17:28:31 +0300
Subject: [PATCH] runc update: don't lose intelRdt state

Prevent --l3-cache-schema from clearing the intel_rdt.memBwSchema state
and --mem-bw-schema clearing l3_cache_schema, respectively.

Signed-off-by: Markus Lehtonen <markus.lehtonen@intel.com>
---
 update.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/update.go b/update.go
index bc8ed1318..d1697a6a7 100644
--- a/update.go
+++ b/update.go
@@ -387,8 +387,12 @@ other options are ignored.
 					return err
 				}
 			}
-			config.IntelRdt.L3CacheSchema = l3CacheSchema
-			config.IntelRdt.MemBwSchema = memBwSchema
+			if l3CacheSchema != "" {
+				config.IntelRdt.L3CacheSchema = l3CacheSchema
+			}
+			if memBwSchema != "" {
+				config.IntelRdt.MemBwSchema = memBwSchema
+			}
 		}
 
 		// XXX(kolyshkin@): currently "runc update" is unable to change