linux-kernel - [PATCH 01/10] x86/cpufeature: Kill cpu_has_arch

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1459266123-21878-2-git-send-email-bp@alien8.de>
Date:	Tue, 29 Mar 2016 17:41:54 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	X86 ML <x86@...nel.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, oprofile-list@...ts.sf.net
Subject: [PATCH 01/10] x86/cpufeature: Kill cpu_has_arch_perfmon

From: Borislav Petkov <bp@...e.de>

Use boot_cpu_has() instead.

Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: oprofile-list@...ts.sf.net
---
 arch/x86/include/asm/cpufeature.h | 1 -
 arch/x86/oprofile/nmi_int.c       | 4 ++--
 arch/x86/oprofile/op_model_ppro.c | 2 +-
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 3636ec06c887..fee7a6efcd2d 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -131,7 +131,6 @@ extern const char * const x86_bug_flags[NBUGINTS*32];
 #define cpu_has_avx2		boot_cpu_has(X86_FEATURE_AVX2)
 #define cpu_has_clflush		boot_cpu_has(X86_FEATURE_CLFLUSH)
 #define cpu_has_gbpages		boot_cpu_has(X86_FEATURE_GBPAGES)
-#define cpu_has_arch_perfmon	boot_cpu_has(X86_FEATURE_ARCH_PERFMON)
 #define cpu_has_pat		boot_cpu_has(X86_FEATURE_PAT)
 #define cpu_has_x2apic		boot_cpu_has(X86_FEATURE_X2APIC)
 #define cpu_has_xsave		boot_cpu_has(X86_FEATURE_XSAVE)
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index 0e07e0968c3a..25171e9595f7 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -636,7 +636,7 @@ static int __init ppro_init(char **cpu_type)
 	__u8 cpu_model = boot_cpu_data.x86_model;
 	struct op_x86_model_spec *spec = &op_ppro_spec;	/* default */
 
-	if (force_cpu_type == arch_perfmon && cpu_has_arch_perfmon)
+	if (force_cpu_type == arch_perfmon && boot_cpu_has(X86_FEATURE_ARCH_PERFMON))
 		return 0;
 
 	/*
@@ -761,7 +761,7 @@ int __init op_nmi_init(struct oprofile_operations *ops)
 		if (cpu_type)
 			break;
 
-		if (!cpu_has_arch_perfmon)
+		if (!boot_cpu_has(X86_FEATURE_ARCH_PERFMON))
 			return -ENODEV;
 
 		/* use arch perfmon as fallback */
diff --git a/arch/x86/oprofile/op_model_ppro.c b/arch/x86/oprofile/op_model_ppro.c
index d90528ea5412..350f7096baac 100644
--- a/arch/x86/oprofile/op_model_ppro.c
+++ b/arch/x86/oprofile/op_model_ppro.c
@@ -75,7 +75,7 @@ static void ppro_setup_ctrs(struct op_x86_model_spec const *model,
 	u64 val;
 	int i;
 
-	if (cpu_has_arch_perfmon) {
+	if (boot_cpu_has(X86_FEATURE_ARCH_PERFMON)) {
 		union cpuid10_eax eax;
 		eax.full = cpuid_eax(0xa);
 
-- 
2.7.3