linux-kernel - [tip:x86/cpu] x86: Add a BSP cpu

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]

Date:	Fri, 5 Aug 2011 22:58:58 GMT
From:	tip-bot for Borislav Petkov <bp@...64.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	tglx@...utronix.de, hpa@...ux.intel.com, bp@...64.org,
	borislav.petkov@....com
Subject: [tip:x86/cpu] x86: Add a BSP cpu_dev helper

Commit-ID:  a110b5ec7371592eac856ac5c22dc7b518952d44
Gitweb:     http://git.kernel.org/tip/a110b5ec7371592eac856ac5c22dc7b518952d44
Author:     Borislav Petkov <bp@...64.org>
AuthorDate: Fri, 5 Aug 2011 20:01:16 +0200
Committer:  H. Peter Anvin <hpa@...ux.intel.com>
CommitDate: Fri, 5 Aug 2011 12:26:49 -0700

x86: Add a BSP cpu_dev helper

Add a function ptr to struct cpu_dev which is destined to be run only
once on the BSP during boot.

Signed-off-by: Borislav Petkov <borislav.petkov@....com>
Link: http://lkml.kernel.org/r/20110805180116.GB26217@aftab
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
---
 arch/x86/kernel/cpu/common.c |    3 +++
 arch/x86/kernel/cpu/cpu.h    |    1 +
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 22a073d..8ed394a 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -681,6 +681,9 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
 	filter_cpuid_features(c, false);
 
 	setup_smep(c);
+
+	if (this_cpu->c_bsp_init)
+		this_cpu->c_bsp_init(c);
 }
 
 void __init early_cpu_init(void)
diff --git a/arch/x86/kernel/cpu/cpu.h b/arch/x86/kernel/cpu/cpu.h
index e765633..1b22dcc 100644
--- a/arch/x86/kernel/cpu/cpu.h
+++ b/arch/x86/kernel/cpu/cpu.h
@@ -18,6 +18,7 @@ struct cpu_dev {
 	struct		cpu_model_info c_models[4];
 
 	void            (*c_early_init)(struct cpuinfo_x86 *);
+	void		(*c_bsp_init)(struct cpuinfo_x86 *);
 	void		(*c_init)(struct cpuinfo_x86 *);
 	void		(*c_identify)(struct cpuinfo_x86 *);
 	unsigned int	(*c_size_cache)(struct cpuinfo_x86 *, unsigned int);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/