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| /openbmc/linux/arch/parisc/kernel/ |
| H A D | head.S | diff 0ed1fe4ad394e54783bbffa84102faf435661a2e Fri Jan 12 15:51:22 CST 2018 Helge Deller <deller@gmx.de> parisc: Check if secondary CPUs want own PDC calls
The architecture specification says (for 64-bit systems): PDC is a per
processor resource, and operating system software must be prepared to
manage separate pointers to PDCE_PROC for each processor. The address
of PDCE_PROC for the monarch processor is stored in the Page Zero
location MEM_PDC. The address of PDCE_PROC for each non-monarch
processor is passed in gr26 when PDCE_RESET invokes OS_RENDEZ.
Currently we still use one PDC for all CPUs, but in case we face a
machine which is following the specification let's warn about it.
Signed-off-by: Helge Deller <deller@gmx.de>
|
| H A D | smp.c | diff 0ed1fe4ad394e54783bbffa84102faf435661a2e Fri Jan 12 15:51:22 CST 2018 Helge Deller <deller@gmx.de> parisc: Check if secondary CPUs want own PDC calls
The architecture specification says (for 64-bit systems): PDC is a per
processor resource, and operating system software must be prepared to
manage separate pointers to PDCE_PROC for each processor. The address
of PDCE_PROC for the monarch processor is stored in the Page Zero
location MEM_PDC. The address of PDCE_PROC for each non-monarch
processor is passed in gr26 when PDCE_RESET invokes OS_RENDEZ.
Currently we still use one PDC for all CPUs, but in case we face a
machine which is following the specification let's warn about it.
Signed-off-by: Helge Deller <deller@gmx.de>
|