x86: fix sparse error in traps_32.c
This was being used to ensure the proper alignment of the FXSAVE/FXRSTOR data. This would create a sparse error in the _correct_ cases, hiding further warnings. Use BUILD_BUG_ON instead. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -1176,17 +1176,12 @@ void __init trap_init(void)
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#endif
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set_trap_gate(19,&simd_coprocessor_error);
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/*
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* Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned.
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* Generate a build-time error if the alignment is wrong.
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*/
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BUILD_BUG_ON(offsetof(struct task_struct, thread.i387.fxsave) & 15);
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if (cpu_has_fxsr) {
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/*
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* Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned.
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* Generates a compile-time "error: zero width for bit-field" if
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* the alignment is wrong.
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*/
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struct fxsrAlignAssert {
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int _:!(offsetof(struct task_struct,
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thread.i387.fxsave) & 15);
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};
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printk(KERN_INFO "Enabling fast FPU save and restore... ");
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set_in_cr4(X86_CR4_OSFXSR);
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printk("done.\n");
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