Tony Lindgren wrote:
> +static void __init kuser_get_tls_init(unsigned long vectors)
> +{
> + /*
> + * vectors + 0xfe0 = __kuser_get_tls
> + * vectors + 0xfe8 = hardware TLS instruction at 0xffff0fe8
> + */
> + if (tls_emu || has_tls)
> + memcpy((void *)vectors + 0xfe0, (void *)vectors + 0xfe8, 4);
> +}
Just a little opinion: Perhaps has_tls_reg would be a clearer name.
All variants "have TLS" after all.
Also - and this isn't directly related to your change so feel free to
ignore it - wouldn't it make more sense for the tls_emu case to use
the memory version (and update the memory location), so that even on
tls_emu systems, user programs which call the kuser code will run faster?
With that change, there would be no real penalty to enabling tls_emu
for any system that finds it useful.
-- Jamie
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