x86/fpu change for v3.1

GIT PULL Ingo Molnar 1 participant 1 message Jul 23, 2011

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x86 x86 hardware vulnerabilities

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Ingo Molnar

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2011-07-23 09:21 UTC #0 lore raw

Linus,

Please pull the latest x86-fpu-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git x86-fpu-for-linus

Thanks,

Ingo

------------------>
Suresh Siddha (1):
x86-32, fpu: Fix DNA exception during check_fpu()

 arch/x86/kernel/cpu/bugs.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

arch/x86/kernel/cpu/bugs.c +4 -0

index 525514c..46674fb 100644
@@ -62,6 +62,8 @@ static void __init check_fpu(void)
 		return;
 	}
 
+	kernel_fpu_begin();
+
 	/*
 	 * trap_init() enabled FXSR and company _before_ testing for FP
 	 * problems here.

@@ -80,6 +82,8 @@ static void __init check_fpu(void)
 		: "=m" (*&fdiv_bug)
 		: "m" (*&x), "m" (*&y));
 
+	kernel_fpu_end();
+
 	boot_cpu_data.fdiv_bug = fdiv_bug;
 	if (boot_cpu_data.fdiv_bug)
 		printk(KERN_WARNING "Hmm, FPU with FDIV bug.\n");