With threads leaving the math bits enabled in their saved MSR to
indicate
that the hardware is hot and a restore is not needed, children need
to turn
it off as when they do get scheduled, there's no way their registers
could
have been hot.
=20
Signed-off-by: Cyril Bur <redacted>
---
 arch/powerpc/kernel/process.c | 1 +
 1 file changed, 1 insertion(+)
=20

diff --git a/arch/powerpc/kernel/process.c

b/arch/powerpc/kernel/process.c
index 398f7bf..441d9e5 100644

--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c

@@ -1243,6 +1243,7 @@ int copy_thread(unsigned long clone_flags,

unsigned long usp,
=20
 		f =3D ret_from_fork;
 	}
+	childregs->msr &=3D ~(MSR_FP|MSR_VEC|MSR_VSX);