[RFC PATCH 6/6] x86/fpu: Fix the "Giving up, no FPU found" test

From: Andy Lutomirski
Date: Mon Dec 05 2016 - 20:02:08 EST


We would never print "Giving up, no FPU found" because
X86_FEATURE_FPU was in REQUIRED_MASK on non-FPU-emulating builds, so
the boot_cpu_has() test didn't do anything.

Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
---
arch/x86/kernel/fpu/init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index 75e1bf3b0319..d41924a72576 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -80,7 +80,7 @@ static void fpu__init_system_early_generic(struct cpuinfo_x86 *c)
}

#ifndef CONFIG_MATH_EMULATION
- if (!boot_cpu_has(X86_FEATURE_FPU)) {
+ if (!test_cpu_cap(&boot_cpu_data, X86_FEATURE_FPU)) {
pr_emerg("x86/fpu: Giving up, no FPU found and no math emulation present\n");
for (;;)
asm volatile("hlt");
--
2.9.3