From: Valentin Schneider <vschneid@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
linux-arch@vger.kernel.org, x86@kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>,
Peter Zijlstra <peterz@infradead.org>,
Josh Poimboeuf <jpoimboe@kernel.org>,
Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Arnd Bergmann <arnd@arndb.de>, Jason Baron <jbaron@akamai.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ard Biesheuvel <ardb@kernel.org>,
Frederic Weisbecker <frederic@kernel.org>,
"Paul E. McKenney" <paulmck@kernel.org>,
Feng Tang <feng.tang@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
"Mike Rapoport (IBM)" <rppt@kernel.org>,
Vlastimil Babka <vbabka@suse.cz>,
David Hildenbrand <david@redhat.com>,
"ndesaulniers@google.com" <ndesaulniers@google.com>,
Michael Kelley <mikelley@microsoft.com>,
"Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Subject: [PATCH 4/5] x86/speculation: Make mds_user_clear __ro_after_init
Date: Mon, 20 Nov 2023 11:55:27 +0100 [thread overview]
Message-ID: <20231120105528.760306-5-vschneid@redhat.com> (raw)
In-Reply-To: <20231120105528.760306-1-vschneid@redhat.com>
mds_user_clear is only ever enabled in:
o __init mds_select_mitigation()
o __init taa_select_mitigation()
o __init mmio_select_mitigation()
mark it as __ro_after_init.
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
---
arch/x86/kernel/cpu/bugs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index bb0ab8466b919..bab36096015d8 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -112,7 +112,7 @@ DEFINE_STATIC_KEY_FALSE(switch_mm_cond_ibpb);
DEFINE_STATIC_KEY_FALSE(switch_mm_always_ibpb);
/* Control MDS CPU buffer clear before returning to user space */
-DEFINE_STATIC_KEY_FALSE(mds_user_clear);
+DEFINE_STATIC_KEY_FALSE_RO(mds_user_clear);
EXPORT_SYMBOL_GPL(mds_user_clear);
/* Control MDS CPU buffer clear before idling (halt, mwait) */
DEFINE_STATIC_KEY_FALSE(mds_idle_clear);
--
2.41.0
next prev parent reply other threads:[~2023-11-20 10:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-20 10:55 [PATCH 0/5] jump_label: Fix __ro_after_init keys for modules & annotate some keys Valentin Schneider
2023-11-20 10:55 ` [PATCH 1/5] jump_label,module: Don't alloc static_key_mod for __ro_after_init keys Valentin Schneider
2023-11-20 21:38 ` kernel test robot
2023-11-20 22:47 ` kernel test robot
2023-11-20 10:55 ` [PATCH 2/5] context_tracking: Make context_tracking_key __ro_after_init Valentin Schneider
2023-11-20 10:55 ` [PATCH 3/5] x86/kvm: Make kvm_async_pf_enabled __ro_after_init Valentin Schneider
2023-11-27 22:20 ` Sean Christopherson
2023-11-20 10:55 ` Valentin Schneider [this message]
2023-11-20 10:55 ` [PATCH 5/5] x86/tsc: Make __use_tsc __ro_after_init Valentin Schneider
2023-11-20 12:05 ` Peter Zijlstra
2023-12-04 16:51 ` Valentin Schneider
2023-12-04 18:20 ` Peter Zijlstra
2024-01-02 15:09 ` Valentin Schneider
2023-12-02 16:36 ` [PATCH 0/5] jump_label: Fix __ro_after_init keys for modules & annotate some keys Josh Poimboeuf
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