Differential D3024
Add support for SMP on arm64. Authored by andrew on Jul 8 2015, 5:09 PM. Tags None Referenced Files
Details Add support for SMP. This uses the FDT data to find the CPUs to start This has been tested on qemu with 2 cpus as that is the current value Partially based on a patch from Robin Randhawa from ARM.
Diff Detail
Event TimelineComment Actions The Semihalf 48 core SMP testing is on a branch which started from (a version of) this change. I will defer to @zbb and @wma_semihalf.com for specific details and comment, but it seems reasonable to me to commit this change once reviewed and have Semihalf add the additional changes as separate commits to svn HEAD.
Comment Actions That would be great if you could commit this patch "as is". We have few fixes to mp_machdep/locore which are currently rebased against your version. Avoiding merges of post-review fixes will let us save a lot of time... Comment Actions Do note that this patch has been reworked than the version on GitHub. We now start the CPUs earlier in the boot process so they will be running when we wish to release them. Comment Actions I did notice it's cleaned up (and it's got the annoying DO_AST printf changed to ktr). However, the places where I expect merge conflicts are the same. We had to change stack calculation, sequence in init_secondary, fix the KSTACK_PAGES variable (it does not correspond to the one set in kernconf here)... these are the one from the top of my head. | ||||||||||||||||||||||||||||||||||