Andi Kleen wrote:
> + err |= setup_sigcontext(&frame->sc, &frame->fpstate, regs, set->sig[0],
> + (ka->sa.sa_flags&SA_NOFP));
> err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpstate,
> - regs, set->sig[0]);
> + regs, set->sig[0], !!(ka->sa.sa_flags&SA_NOFP));
1: Why the inconsistency between the two ways the SA_NOFP flag is checked?
2: What happens when the user's signal handler decides it wants to save
the FPU state itself (after all) and proceed with some FPU use. Will
sigreturn restore the user-saved FPU state? Just curious.
-- Jamie
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