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From: Maxim Levitsky <mlevitsk@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
	Ingo Molnar <mingo@redhat.com>,
	Josh Poimboeuf <jpoimboe@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Tony Luck <tony.luck@intel.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Tim Chen <tim.c.chen@linux.intel.com>,
	Borislav Petkov <bp@alien8.de>,
	"David S. Miller" <davem@davemloft.net>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"Chang S. Bae" <chang.seok.bae@intel.com>,
	Jane Malalane <jane.malalane@citrix.com>,
	Kees Cook <keescook@chromium.org>,
	Kan Liang <kan.liang@linux.intel.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Maxim Levitsky <mlevitsk@redhat.com>,
	x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
	Herbert Xu <herbert@gondor.apana.org.au>,
	Jiri Olsa <jolsa@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
	linux-perf-users@vger.kernel.org,
	linux-crypto@vger.kernel.org (open list:CRYPTO API)
Subject: [PATCH v2 1/5] perf/x86/intel/lbr: use setup_clear_cpu_cap instead of clear_cpu_cap
Date: Mon, 18 Jul 2022 17:11:19 +0300	[thread overview]
Message-ID: <20220718141123.136106-2-mlevitsk@redhat.com> (raw)
In-Reply-To: <20220718141123.136106-1-mlevitsk@redhat.com>

clear_cpu_cap(&boot_cpu_data) is very similar to setup_clear_cpu_cap
except that the latter also sets a bit in 'cpu_caps_cleared' which
later clears the same cap in secondary cpus, which is likely
what is meant here.

Fixes: 47125db27e47 ("perf/x86/intel/lbr: Support Architectural LBR")

Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
---
 arch/x86/events/intel/lbr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c
index 13179f31fe10fa..b08715172309a7 100644
--- a/arch/x86/events/intel/lbr.c
+++ b/arch/x86/events/intel/lbr.c
@@ -1860,7 +1860,7 @@ void __init intel_pmu_arch_lbr_init(void)
 	return;
 
 clear_arch_lbr:
-	clear_cpu_cap(&boot_cpu_data, X86_FEATURE_ARCH_LBR);
+	setup_clear_cpu_cap(X86_FEATURE_ARCH_LBR);
 }
 
 /**
-- 
2.34.3


  reply	other threads:[~2022-07-18 14:11 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-18 14:11 [PATCH v2 0/5] x86: cpuid: improve support for broken CPUID configurations Maxim Levitsky
2022-07-18 14:11 ` Maxim Levitsky [this message]
2022-09-19 14:31   ` [PATCH v2 1/5] perf/x86/intel/lbr: use setup_clear_cpu_cap instead of clear_cpu_cap Borislav Petkov
2022-09-20  8:20     ` Maxim Levitsky
2022-09-26 13:12       ` Borislav Petkov
2022-09-28 10:49         ` Maxim Levitsky
2022-10-20  8:59           ` Borislav Petkov
2022-10-20  9:05             ` Herbert Xu
2022-10-20 10:21               ` Maxim Levitsky
2022-10-20 11:13                 ` Borislav Petkov
2022-10-22 21:08             ` H. Peter Anvin
2022-11-02 13:40             ` Paolo Bonzini
2022-11-02 14:27               ` Elliott, Robert (Servers)
2022-11-02 16:23                 ` H. Peter Anvin
2022-11-02 18:19                   ` H. Peter Anvin
2022-11-02 19:14                     ` Elliott, Robert (Servers)
2022-11-03 13:26                   ` Paolo Bonzini
2022-11-03 13:30                 ` Paolo Bonzini
2022-10-20 15:17   ` [tip: x86/urgent] perf/x86/intel/lbr: Use setup_clear_cpu_cap() instead of clear_cpu_cap() tip-bot2 for Maxim Levitsky
2022-07-18 14:11 ` [PATCH v2 2/5] x86/cpuid: refactor setup_clear_cpu_cap()/clear_cpu_cap() Maxim Levitsky
2022-10-21 16:19   ` Borislav Petkov
2022-11-07 19:10     ` Borislav Petkov
2022-11-07 21:57       ` Borislav Petkov
2022-07-18 14:11 ` [PATCH v2 3/5] x86/cpuid: move filter_cpuid_features to cpuid-deps.c Maxim Levitsky
2022-07-18 14:11 ` [PATCH v2 4/5] x86/cpuid: remove 'warn' parameter from filter_cpuid_features Maxim Levitsky
2022-07-18 14:11 ` [PATCH v2 5/5] x86/cpuid: check for dependencies violations in CPUID and attempt to fix them Maxim Levitsky
2022-07-28  7:30 ` [PATCH v2 0/5] x86: cpuid: improve support for broken CPUID configurations Maxim Levitsky
2022-08-01 16:05   ` Maxim Levitsky
2022-08-01 16:31     ` Dave Hansen
2022-08-01 16:41       ` Maxim Levitsky
2022-09-19 13:43     ` Maxim Levitsky

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