From 8354fa1d2e471699331961272bc38f5e4cfe7cb8 Mon Sep 17 00:00:00 2001
Message-Id: <8354fa1d2e471699331961272bc38f5e4cfe7cb8@dist-git>
From: Jiri Denemark <jdenemar@redhat.com>
Date: Wed, 22 Jun 2022 09:04:04 +0200
Subject: [PATCH] qemu_migration: Use qemuDomainSetMaxMemLock
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This helper will not try to set the limit if it is already big enough,
which may be useful when libvirt daemon is running in a containerized
environment and is not allowed to change memory locking limit.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
(cherry picked from commit 22ee8cbf090c45f999b76e3f8dc7a45065fc9edf)

https://bugzilla.redhat.com/show_bug.cgi?id=2089433

Conflicts:
	src/qemu/qemu_migration.c
            - refactoring for post-copy recovery not backported

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
---
 src/qemu/qemu_migration.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
index 2635ef1162..10338f8e87 100644
--- a/src/qemu/qemu_migration.c
+++ b/src/qemu/qemu_migration.c
@@ -2974,7 +2974,7 @@ qemuMigrationDstPrepareAny(virQEMUDriver *driver,
 
     if (STREQ_NULLABLE(protocol, "rdma") &&
         vm->def->mem.hard_limit > 0 &&
-        virProcessSetMaxMemLock(vm->pid, vm->def->mem.hard_limit << 10) < 0) {
+        qemuDomainSetMaxMemLock(vm, vm->def->mem.hard_limit << 10, NULL) < 0) {
         goto stopjob;
     }
 
@@ -4224,7 +4224,7 @@ qemuMigrationSrcRun(virQEMUDriver *driver,
     case MIGRATION_DEST_HOST:
         if (STREQ(spec->dest.host.protocol, "rdma") &&
             vm->def->mem.hard_limit > 0 &&
-            virProcessSetMaxMemLock(vm->pid, vm->def->mem.hard_limit << 10) < 0) {
+            qemuDomainSetMaxMemLock(vm, vm->def->mem.hard_limit << 10, NULL) < 0) {
             goto exit_monitor;
         }
         rc = qemuMonitorMigrateToHost(priv->mon, migrate_flags,
-- 
2.35.1