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authorUlrich Weigand <Ulrich.Weigand@de.ibm.com>2013-12-04 06:45:56 -0600
committerAdhemerval Zanella <azanella@linux.vnet.ibm.com>2013-12-04 07:41:38 -0600
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PowerPC64: Add __private_ss field to TCB header
The TCB header on Intel contains a field __private_ss that is used to efficiently implement the -fsplit-stack GCC feature. In order to prepare for a possible future implementation of that feature on powerpc64, we'd like to reserve a similar field in the TCB header as well. (It would be good if this went in with or before the ELFv2 patches to ensure that this field will be available always in the ELFv2 environment.) The field needs to be added at the front of tcbhead_t structure to avoid changing the ABI; see the recent discussion when adding the EBB fields.
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