linux-kernel - [PATCH 1/2] cpu: common: make clearcpuid option take bits list

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Date:	Fri, 20 Jul 2012 20:37:32 +0400
From:	Vladimir Davydov <vdavydov@...allels.com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>
CC:	Andi Kleen <ak@...ux.intel.com>,
	Borislav Petkov <borislav.petkov@....com>,
	Vladimir Davydov <vdavydov@...allels.com>, <x86@...nel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] cpu: common: make clearcpuid option take bits list

It is more convenient to write 'clearcpuid=147,148,...' than
'clearcpuid=147 clearcpuid=148 ...'
---
 arch/x86/kernel/cpu/common.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 6b9333b..8ffe1b9 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -1012,10 +1012,10 @@ static __init int setup_disablecpuid(char *arg)
 {
 	int bit;
 
-	if (get_option(&arg, &bit) && bit < NCAPINTS*32)
-		setup_clear_cpu_cap(bit);
-	else
-		return 0;
+	while (get_option(&arg, &bit)) {
+		if (bit >= 0 && bit < NCAPINTS*32)
+			setup_clear_cpu_cap(bit);
+	}
 
 	return 1;
 }
-- 
1.7.1

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