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Diffstat (limited to 'arch/mips/kernel/signal32.c')
-rw-r--r--arch/mips/kernel/signal32.c29
1 files changed, 12 insertions, 17 deletions
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index 20013b6fe72..151fd2f0893 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -181,6 +181,7 @@ static int setup_sigcontext32(struct pt_regs *regs,
{
int err = 0;
int i;
+ u32 used_math;
err |= __put_user(regs->cp0_epc, &sc->sc_pc);
@@ -200,22 +201,18 @@ static int setup_sigcontext32(struct pt_regs *regs,
err |= __put_user(mflo3(), &sc->sc_lo3);
}
- err |= __put_user(!!used_math(), &sc->sc_used_math);
+ used_math = !!used_math();
+ err |= __put_user(used_math, &sc->sc_used_math);
- if (used_math()) {
+ if (used_math) {
/*
* Save FPU state to signal context. Signal handler
* will "inherit" current FPU state.
*/
- preempt_disable();
-
- if (!is_fpu_owner()) {
- own_fpu();
- restore_fp(current);
- }
+ own_fpu(1);
+ enable_fp_in_kernel();
err |= save_fp_context32(sc);
-
- preempt_enable();
+ disable_fp_in_kernel();
}
return err;
}
@@ -262,20 +259,18 @@ static int restore_sigcontext32(struct pt_regs *regs,
err |= __get_user(used_math, &sc->sc_used_math);
conditional_used_math(used_math);
- preempt_disable();
-
- if (used_math()) {
+ if (used_math) {
/* restore fpu context if we have used it before */
- own_fpu();
+ own_fpu(0);
+ enable_fp_in_kernel();
if (!err)
err = check_and_restore_fp_context32(sc);
+ disable_fp_in_kernel();
} else {
/* signal handler may have used FPU. Give it up. */
- lose_fpu();
+ lose_fpu(0);
}
- preempt_enable();
-
return err;
}