[PATCH] x86/kerrnel/FPU: clear MP bit of cr0

[Khalid Ali <khaliidcaliy@gmail.com>]

From: Khalid Ali <khaliidcaliy@gmail.com>

Clear MP bit when initializing x87 FPU, since what it does
is making WAIT/FWAIT instructions to react to setting of TS flag.
Right now TS bit is cleared so MP should be cleared, as it is not
needed. This should set the bit in defined state.

Signed-off-by: Khalid Ali <khaliidcaliy@gmail.com>
---
 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 998a08f17e33..2a2b45610b74 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -30,7 +30,7 @@ static void fpu__init_cpu_generic(void)
 		cr4_set_bits(cr4_mask);
 
 	cr0 = read_cr0();
-	cr0 &= ~(X86_CR0_TS|X86_CR0_EM); /* clear TS and EM */
+	cr0 &= ~(X86_CR0_TS|X86_CR0_EM|X86_CR0_MP); /* clear TS, EM and MP*/
 	if (!boot_cpu_has(X86_FEATURE_FPU))
 		cr0 |= X86_CR0_EM;
 	write_cr0(cr0);
-- 
2.49.0