[Devel] [PATCH RHEL10 COMMIT] ve: add missing Kconfig selects for CONFIG_VE

[Konstantin Khorenko]

The commit is pushed to "branch-rh10-6.12.0-211.39.1.16.x.vz10-ovz" and will appear at git at bitbucket.org:openvz/vzkernel.git
after rh10-6.12.0-211.39.1.16.6.vz10
------>
commit 1a95a49afb5a7965df39c48fa6b49142ae1e82fa
Author: Eva Kurchatova <eva.kurchatova at virtuozzo.com>
Date:   Fri Aug 21 18:36:53 2026 +0200

    ve: add missing Kconfig selects for CONFIG_VE
    
    The select list of CONFIG_VE only ever named the namespaces and a few
    cgroup controllers, and got away with it because everything else it needs
    happened to be enabled by the RHEL and Virtuozzo x86 configs.  It is not
    a property of the option itself, though: plain "make defconfig" already
    gives CONFIG_VE=y with CONFIG_MEMCG=n, and building for User Mode Linux
    (which we now want for KUnit) starts from yet another set of defaults.
    
    Name the dependencies explicitly:
    
      NET             - NET_NS depends on it, so selecting NET_NS alone
                        yields an unmet direct dependency;
      CGROUP_SCHED    - the cpu cgroup is the per-Container task group:
                        cgroup_mark_ve_roots(), the per-Container loadavg
                        and the /proc/stat virtualization all need it;
      CGROUP_CPUACCT  - per-Container cpu statistics are read from it;
      MEMCG, MEMCG_V1 - per-Container memory limits and the /proc/meminfo,
                        /proc/vmstat and oom_score virtualization are all
                        built on the memory controller, v1 included;
      POSIX_MQUEUE    - part of the IPC environment a Container expects;
      SCHEDSTATS      - kernel/ve/vzstat.c reads task->stats.wait_start, and
                        all of struct sched_statistics sits under that option.
    
    Fixes: 82652f8a0749 ("ve: Add ve cgroup and ve_hook subsys")
    Feature: ve: ve generic structures
    https://virtuozzo.atlassian.net/browse/VSTOR-134732
    Signed-off-by: Eva Kurchatova <eva.kurchatova at virtuozzo.com>
    
    Signed-off-by: Konstantin Khorenko <khorenko at virtuozzo.com>
---
 kernel/Kconfig.openvz | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/kernel/Kconfig.openvz b/kernel/Kconfig.openvz
index 9358727c1afad..7494048425a54 100644
--- a/kernel/Kconfig.openvz
+++ b/kernel/Kconfig.openvz
@@ -14,12 +14,19 @@ config VE
 	select PID_NS
 	select IPC_NS
 	select UTS_NS
+	select NET
 	select NET_NS
 	select USER_NS
 	select CGROUPS
+	select CGROUP_SCHED
+	select CGROUP_CPUACCT
+	select MEMCG
+	select MEMCG_V1
 	select CGROUP_DEVICE
 	select CGROUP_FREEZER
 	select CGROUP_PERF if PERF_EVENTS
+	select POSIX_MQUEUE
+	select SCHEDSTATS
 	help
 	  This option adds support of virtual Linux running on the original box
 	  with fully supported virtual network driver, tty subsystem and