sh: Use boot_cpu_data for FPU tests in sigcontext paths.
We do not want to use smp_processor_id() from these paths, as they trip preempt BUGs. Switch the test over to the boot cpu directly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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1 changed files with 3 additions and 3 deletions
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@ -145,7 +145,7 @@ static inline int restore_sigcontext_fpu(struct sigcontext __user *sc)
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{
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{
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struct task_struct *tsk = current;
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struct task_struct *tsk = current;
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if (!(current_cpu_data.flags & CPU_HAS_FPU))
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if (!(boot_cpu_data.flags & CPU_HAS_FPU))
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return 0;
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return 0;
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set_used_math();
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set_used_math();
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@ -158,7 +158,7 @@ static inline int save_sigcontext_fpu(struct sigcontext __user *sc,
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{
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{
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struct task_struct *tsk = current;
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struct task_struct *tsk = current;
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if (!(current_cpu_data.flags & CPU_HAS_FPU))
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if (!(boot_cpu_data.flags & CPU_HAS_FPU))
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return 0;
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return 0;
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if (!used_math()) {
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if (!used_math()) {
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@ -199,7 +199,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *r0_p
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#undef COPY
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#undef COPY
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#ifdef CONFIG_SH_FPU
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#ifdef CONFIG_SH_FPU
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if (current_cpu_data.flags & CPU_HAS_FPU) {
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if (boot_cpu_data.flags & CPU_HAS_FPU) {
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int owned_fp;
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int owned_fp;
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struct task_struct *tsk = current;
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struct task_struct *tsk = current;
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