On 17 September 2015 at 18:38, Shlomo Pongratz <shlomopongr...@gmail.com> wrote: > From: Shlomo Pongratz <shlomo.pongr...@huawei.com> > > This patch is a first step toward 128 cores support for arm64. > > At first only 64 cores are supported. > This is because largest integer type has the size of 64 bits and modifying > essential data structures in order to support 128 cores will require > the usage of bitops. > > Things left to do: > > Support SPI, note that this patch porpose is to enable running 64 cores using > the "virt" virtual machine. > > Add support for 128 cores. This requires the usage > of bitops which requires a major rewrite. > > Special thanks to Peter Crostwaite whose patch to th Linux (kernel) i.e. > Implement cpu_relax as yield solved the problem of the boot process getting > stuck for 24 cores and more.
This still seems to have the same issues as were noted in previous rounds: * you need to get rid of the limitation on number of cores. There should be no hard limit imposed by the GIC emulation code: not 64, not 128, not anything. * patch 2 is over 2000 lines, which is far too big to review. It needs to be split up. Aim for 200 lines per patch at maximum; smaller is better. Also, patch 4 looks like it's an older version of one of Pavel's; you probably want to rebase on top of Pavel's recent v14 series, which is nearly ready to go into master. thanks -- PMM
