[PATCH v16 6/8] nptl: Move the rseq area to the 'extra TLS' block

[Florian Weimer]

* Michael Jeanson:

> +#if TLS_TCB_AT_TP
> +  /* The rseq area block should come before the thread pointer and be at least
> +     32 bytes. */
> +  TEST_VERIFY (__rseq_offset <= -RSEQ_AREA_SIZE_INITIAL);
> +
> +  /* The rseq area block should come before TLS variables.  */
> +  TEST_VERIFY ((intptr_t) rseq_abi < (intptr_t) &tls_var);
> +#elif TLS_DTV_AT_TP
> +  /* The rseq area block should come after the TCB, add the TLS block offset to
> +     the rseq offset to get a value relative to the TCB and test that it's
> +     non-negative.  */
> +  TEST_VERIFY (__rseq_offset + TLS_TP_OFFSET >= 0);
> +
> +  /* The rseq area block should come after TLS variables.  */
> +  TEST_VERIFY ((intptr_t) rseq_abi > (intptr_t) &tls_var);
> +#else
> +# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
> +#endif

Looks good now.  Rest is okay as well.

Reviewed-by: Florian Weimer <fweimer@redhat.com>

Thanks,
Florian