From: Eva Kurchatova <eva.kurchatova@virtuozzo.com>
To: khorenko@virtuozzo.com
Cc: devel@openvz.org
Subject: [Devel] [PATCH hci-8.1 v2 5/6] timens: keep the option off where the vDSO updates its own time data
Date: Mon, 19 Oct 2026 03:05:57 +0300 [thread overview]
Message-ID: <20261019000649.1371025-6-eva.kurchatova@virtuozzo.com> (raw)
In-Reply-To: <20261019000649.1371025-1-eva.kurchatova@virtuozzo.com>
Mainline moved sparc to the generic vDSO library in 7c5fc16c7a56
("sparc64: vdso: Switch to the generic vDSO library") before it let
TIME_NS go without the vDSO; this kernel has not, and its sparc vDSO
knows nothing of the offsets, so a task in a time namespace would read
host time from it and namespace time from the syscall. Keep the option
off where a vDSO updates its own time data without the generic library,
sparc here. x86_64 and arm64 keep it, and User Mode Linux, which has no
such vDSO, gets it.
https://virtuozzo.atlassian.net/browse/VSTOR-148112
Feature: fix ms/timens
Signed-off-by: Eva Kurchatova <eva.kurchatova@virtuozzo.com>
---
init/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/init/Kconfig b/init/Kconfig
index 44b2d4426109..0b0ec9322846 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1306,6 +1306,7 @@ config UTS_NS
config TIME_NS
bool "TIME namespace"
+ depends on GENERIC_GETTIMEOFDAY || !GENERIC_TIME_VSYSCALL
default y
help
In this namespace boottime and monotonic clocks can be set.
--
2.56.0
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next prev parent reply other threads:[~2026-10-19 0:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-19 0:05 [Devel] [PATCH hci-8.1 v2 0/6] timens: Remove dependency on the vDSO Eva Kurchatova
2026-10-19 0:05 ` [Devel] [PATCH hci-8.1 v2 1/6] ms/vdso: Drop Kconfig GENERIC_VDSO_TIME_NS Eva Kurchatova
2026-10-19 0:12 ` no-reply
2026-10-19 0:05 ` [Devel] [PATCH hci-8.1 v2 2/6] ms/vdso/timens: Move functions to new file Eva Kurchatova
2026-10-19 0:12 ` no-reply
2026-10-19 0:05 ` [Devel] [PATCH hci-8.1 v2 3/6] ms/timens: Remove dependency on the vDSO Eva Kurchatova
2026-10-19 0:15 ` no-reply
2026-10-19 0:05 ` [Devel] [PATCH hci-8.1 v2 4/6] timens: freeze the offsets on the first join without the vDSO too Eva Kurchatova
2026-10-19 0:14 ` no-reply
2026-10-19 0:05 ` Eva Kurchatova [this message]
2026-10-19 0:16 ` [Devel] [PATCH hci-8.1 v2 5/6] timens: keep the option off where the vDSO updates its own time data no-reply
2026-10-19 0:05 ` [Devel] [PATCH hci-8.1 v2 6/6] config: follow the TIME_NS Kconfig change in config.vz10.minimal Eva Kurchatova
2026-10-19 0:16 ` no-reply
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