This is -v3 of the "Fast Kernel Headers" tree, which is an ongoing rework of the Linux kernel's header hierarchy & header dependencies, with the dual goals of: - speeding up the kernel build (both absolute and incremental build times) - decoupling subsystem type & API definitions from each other The fast-headers tree consists of over 25 sub-trees internally, spanning over 2,300 commits, which can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git master There's various changes in -v3, and it's now ported to the latest kernel (v5.17-rc8). Diffstat difference: -v2: 25332 files changed, 178498 insertions(+), 74790 deletions(-) -v3: 25513 files changed, 180947 insertions(+), 74572 deletions(-) Thanks, Ingo