From: Borislav Petkov <bp@alien8.de>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
lkml <linux-kernel@vger.kernel.org>
Subject: [PATCH] x86, cpu: X86_FEATURE_NOPL should be disabled on 32-bit only
Date: Sun, 3 Oct 2010 17:22:12 +0200 [thread overview]
Message-ID: <20101003152212.GA13233@liondog.tnic> (raw)
In-Reply-To: <4CA89681.8000202@zytor.com>
ba0593bf553c450a03dbc5f8c1f0ff58b778a0c8 cleared the aforementioned
cpuid bit only on 32-bit due to various problems with Virtual PC. This
somehow got lost during the 32- + 64-bit merge so restore the feature
bit on 64-bit.
Signed-off-by: Borislav Petkov <bp@alien8.de>
---
arch/x86/kernel/cpu/common.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index caa967d..9a2cfeb 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -713,7 +713,9 @@ void __init early_cpu_init(void)
*/
static void __cpuinit detect_nopl(struct cpuinfo_x86 *c)
{
+#ifdef CONFIG_X86_32
clear_cpu_cap(c, X86_FEATURE_NOPL);
+#endif
}
static void __cpuinit generic_identify(struct cpuinfo_x86 *c)
--
1.7.2.3
--
Regards/Gruss,
Boris.
next prev parent reply other threads:[~2010-10-03 15:22 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-03 9:37 NOPL on 32-bit Borislav Petkov
2010-10-03 14:43 ` H. Peter Anvin
2010-10-03 15:22 ` Borislav Petkov [this message]
2010-10-03 18:19 ` [PATCH] x86, cpu: X86_FEATURE_NOPL should be disabled on 32-bit only H. Peter Anvin
2010-10-03 20:11 ` Borislav Petkov
2010-10-03 22:22 ` H. Peter Anvin
2010-10-04 7:31 ` [PATCH] x86, cpu: Fix X86_FEATURE_NOPL Borislav Petkov
2010-10-04 20:36 ` [tip:x86/cpu] " tip-bot for Borislav Petkov
2010-10-05 9:47 ` Borislav Petkov
2010-10-05 16:30 ` H. Peter Anvin
2010-10-05 16:53 ` Borislav Petkov
2010-10-04 20:47 ` [PATCH] " Linus Torvalds
2010-10-04 21:02 ` H. Peter Anvin
2010-10-04 21:12 ` Linus Torvalds
2010-10-04 21:21 ` H. Peter Anvin
2010-10-04 21:48 ` Borislav Petkov
2010-10-04 21:50 ` H. Peter Anvin
2010-10-04 21:53 ` H. Peter Anvin
2010-10-05 6:19 ` Borislav Petkov
2010-10-04 22:17 ` Hugh Dickins
2010-10-04 22:19 ` H. Peter Anvin
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