IPC: Difference between revisions
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| 0x00000004 <nowiki>|</nowiki> (size<< | | 0x00000004 <nowiki>|</nowiki> (size<<14) <nowiki>|</nowiki> (id<<4) | ||
<ptr> | <ptr> | ||
| This is used for RW buffers over PXI. The address written to the destination cmd-buf is a phys-addr for a table located in the | | This is typically used for RW buffers over PXI, but any process can use this. The address written to the destination cmd-buf is a phys-addr for a table located in the corresponding static buffer of the receiving process (which must be provided by the latter, otherwise the kernel dereferences NULL). Each static buffer needs to be page-aligned and musn't exceed a page's length (kernelpanic otherwise). This table contains the phys-addrs for the actual data, the array entries have the following format: {u32 *datachunk_physaddr, u32 datachunk_bytesize}. | ||
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