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* curve25519: explictly depend on AS_AVX * curve25519: modularize dispatch It's now much cleaner to see which implementation we're calling, and it will be simpler to add more implementations in the future. * compat: support RAP in assembly This should fix PaX/Grsecurity support. * device: do not clear keys during sleep on Android While we want to clear keys when going to sleep on ordinary Linux, this doesn't make sense in the Android world, where phones often sleep but are woken up every few milliseconds by the radios to process packets. * compat: fix 3.10 backport Important compat fixes for non-x86. * device: clear last handshake timer on ifdown When bringing up an interface, we don't want the rate limiting to handshakes to apply. * netlink: rename symbol to avoid clashes Allows coexistance with horrible Android drivers. * kernel-tree: jury rig is the more common spelling * tools: no need to put this on the stack * blake2s-x86_64: fix spacing Small fixes. * contrib: keygen-html for generating keys in the browser This was covered here: https://lists.zx2c4.com/pipermail/wireguard/2017-December/002127.html * tools: remove undocumented unused syntax Not only did nobody know about this or use it, but the implementation actually exposed compiler bugs in Qualcomm's "Snapdragon Clang". * poly1305: update x86-64 kernel to AVX512F only From Samuel Neves, this pulls in Andy Polyakov's changes to only require F and not VL for the Poly implementation. * chacha20-arm: fix with clang -fno-integrated-as. This pulls in David Benjamin's clang fix. * global: add SPDX tags to all files From Greg KH, we now have SPDX annotations on all files, matching upstream kernel's new approach to file licenses. * chacha20poly1305: cleaner generic code This entirely removes the last remains of Martin Willi's ChaCha implementation, and now the generic C implementation is extremely small and clearly written, while delivering a small performance boost too. * poly1305: fix avx512f alignment bug Unlucky people may have had their linkers misalign a constant. This fixes that potential. * chacha20: avx512vl implementation From Samuel Neves, this imports Andy Polyakov's AVX512VL implementation of ChaCha which should have a ~50% performance improvement over AVX2, though it is still much slower than our AVX512F implementation. * chacha20poly1305: wire up avx512vl for skylake-x Some Skylake machines do not have two FMA units (though others do), so we prefer the AVX512VL implementation over the should-be-faster AVX512F implementation on those machines. What's needed now is to read the PIROM in order to determine at runtime whether the particular Skylake-X machine actually has the second FMA unit or not, but until that happens, we just fall back to the VL implementation for all Skylake-X. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
See ../docs/kernels.md for more information on kernel builds.
To build with various debug options enabled, build the kernel with
make DEBUG=1. The options enabled are listed in kernel_config.debug.
This allocates a significant amount of memory on boot and you may need to
adjust the kernel config on some systems. Specifically:
--- a/alpine/kernel/kernel_config
+++ b/alpine/kernel/kernel_config
@@ -415,8 +415,8 @@ CONFIG_DMI=y
# CONFIG_CALGARY_IOMMU is not set
CONFIG_SWIOTLB=y
CONFIG_IOMMU_HELPER=y
-CONFIG_MAXSMP=y
-CONFIG_NR_CPUS=8192
+CONFIG_MAXSMP=n
+CONFIG_NR_CPUS=8
# CONFIG_SCHED_SMT is not set
CONFIG_SCHED_MC=y
# CONFIG_PREEMPT_NONE is not set