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Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Arnaldo Carvalho de Melo , Paolo Bonzini , Arnd Bergmann , Frederic Weisbecker , "Paul E. McKenney" , Jason Baron , Steven Rostedt , Ard Biesheuvel , Sami Tolvanen , "David S. Miller" , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Mathieu Desnoyers , Mel Gorman , Andrew Morton , Masahiro Yamada , Han Shen , Rik van Riel , Jann Horn , Dan Carpenter , Oleg Nesterov , Juri Lelli , Clark Williams , Yair Podemsky , Marcelo Tosatti , Daniel Wagner , Petr Tesarik , Shrikanth Hegde Subject: [PATCH v7 07/31] x86/paravirt: Mark pv_sched_clock static call as __ro_after_init Date: Fri, 14 Nov 2025 16:01:09 +0100 Message-ID: <20251114150133.1056710-8-vschneid@redhat.com> In-Reply-To: <20251114150133.1056710-1-vschneid@redhat.com> References: <20251114150133.1056710-1-vschneid@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 5E2E340021 X-Stat-Signature: u7cd5dgwrmpnw5qq3yrnykyf7zgkwtro X-Rspam-User: X-HE-Tag: 1763132658-232825 X-HE-Meta: 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 9SVgTceN 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Later commits will cause objtool to warn about static calls being used in .noinstr sections in order to safely defer instruction patching IPIs targeted at NOHZ_FULL CPUs. pv_sched_clock is updated in: o __init vmware_paravirt_ops_setup() o __init xen_init_time_common() o kvm_sched_clock_init() <- __init kvmclock_init() o hv_setup_sched_clock() <- __init hv_init_tsc_clocksource() IOW purely init context, and can thus be marked as __ro_after_init. Reported-by: Josh Poimboeuf Signed-off-by: Valentin Schneider --- arch/x86/kernel/paravirt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index ab3e172dcc693..34b6fa3fcc045 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -69,7 +69,7 @@ static u64 native_steal_clock(int cpu) } DEFINE_STATIC_CALL(pv_steal_clock, native_steal_clock); -DEFINE_STATIC_CALL(pv_sched_clock, native_sched_clock); +DEFINE_STATIC_CALL_RO(pv_sched_clock, native_sched_clock); void paravirt_set_sched_clock(u64 (*func)(void)) { -- 2.51.0