FreeBSD source tree https://cgit-dev.freebsd.org/src-test2/atom?h=release%2F12.0.0 2018-09-21T17:44:05Z 2018-09-21T17:44:05Z Brooks Davis brooks@FreeBSD.org 2018-09-21T17:44:05Z urn:sha1:397358d9aca10667451f7667852bee2f27b617c0 We're studing the possibility of deprecating sbrk(). To make it easier we're removing unnecessicary uses in the base system. None of these tools require sbrk(), but they agressively prefer it for no good reason. Reviewed by: andrew Approved by: re (kib) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D16141 2018-07-16T18:53:28Z Pedro F. Giffuni pfg@FreeBSD.org 2018-07-16T18:53:28Z urn:sha1:bafc3781478483b8b9c6204a5a5f806c40f99f53 Its been quite a while since the last time we updated this and since then we have grown iconv and a bunch of complex math functions. This only applies to the platforms which still use GCC 4.2.1 in the toolchain. Differential Revision: https://reviews.freebsd.org/D16289 2018-07-06T11:50:59Z Andrew Turner andrew@FreeBSD.org 2018-07-06T11:50:59Z urn:sha1:ae1dac06a24952d09eeb0863704c980a8f026aa6 build from arm64 to other architectures that use binutils. Sponsored by: ABT Systems Ltd 2018-06-27T19:29:15Z Bryan Drewery bdrewery@FreeBSD.org 2018-06-27T19:29:15Z urn:sha1:96a0acc4ce1cbac643c51d118db1912dd63f6bb8 MFC after: 2 weeks Sponsored by: Dell EMC 2018-06-27T18:14:33Z John Baldwin jhb@FreeBSD.org 2018-06-27T18:14:33Z urn:sha1:104f6a2dcdde64f316849b60a428066aaa73cc9c - Change the C++ directory entries to honor --sysroot if it is set. - Don't define CROSS_INCLUDE_DIR for the cross compiler. Instead, set TARGET_SYSTEM_ROOT to point to WORLDTMP and always define STANDARD_INCLUDE_DIR. - Change STANDARD_INCLUDE_DIR and the C++ include directories to just start with "/usr" always. The compiler will prepend the sysroot when doing cross-builds. GCC_INCLUDE_DIR (which contains headers that ship with the compiler such as intrinsincs rather than OS-supplied headers) remains hardcoded to look in TOOLS_PREFIX. Reviewed by: bdrewery (older version) Sponsored by: DARPA / AFRL Differential Revision: https://reviews.freebsd.org/D15127 2018-06-27T18:11:47Z John Baldwin jhb@FreeBSD.org 2018-06-27T18:11:47Z urn:sha1:7cdb6a830526fb77fc1270c34145d512e3269812 GCC 4.2 prefixes these directories with --sysroot meaning that during buildworld they have a double sysroot. Reviewed by: bdrewery Sponsored by: DARPA / AFRL Differential Revision: https://reviews.freebsd.org/D14780 2018-06-20T16:10:02Z Bryan Drewery bdrewery@FreeBSD.org 2018-06-20T16:10:02Z urn:sha1:d74021d65b104beb34c3a0d4c65f149dd6882876 LLD_BOOTSTRAP (build) is independent of LLD_IS_LD (installed) so they should not be based on each other. This is related to upcoming WITH_SYSTEM_LINKER work. Reviewed by: emaste Sponsored by: Dell EMC Differential Revision: https://reviews.freebsd.org/D15836 2018-06-15T17:16:27Z Ed Maste emaste@FreeBSD.org 2018-06-15T17:16:27Z urn:sha1:2f9cfbc6f3a70bf32ddea1d5de902a3ce560316c 2018-04-25T13:23:58Z Baptiste Daroussin bapt@FreeBSD.org 2018-04-25T13:23:58Z urn:sha1:612c330d85a4e48869c4f0307efe3f133969aa6c Import the wrapper script from zstdgrep (written by wiz@netbsd.org) Modify it to support more than just zstd (adding support for gzip, lzma, xz and bzip2) Write a simple manpage dedicated for it. Only use that new wrapper both for gnu grep and bsd grep Next step will be removing code related to compression format from bsdgrep Reviewed by: kevans Approved by: kevans MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D15193 2018-04-13T20:30:49Z Konstantin Belousov kib@FreeBSD.org 2018-04-13T20:30:49Z urn:sha1:d86c1f0dc1b17d94a533b4d3e9228dff9cb3fb31 The change makes the user and kernel address spaces on i386 independent, giving each almost the full 4G of usable virtual addresses except for one PDE at top used for trampoline and per-CPU trampoline stacks, and system structures that must be always mapped, namely IDT, GDT, common TSS and LDT, and process-private TSS and LDT if allocated. By using 1:1 mapping for the kernel text and data, it appeared possible to eliminate assembler part of the locore.S which bootstraps initial page table and KPTmap. The code is rewritten in C and moved into the pmap_cold(). The comment in vmparam.h explains the KVA layout. There is no PCID mechanism available in protected mode, so each kernel/user switch forth and back completely flushes the TLB, except for the trampoline PTD region. The TLB invalidations for userspace becomes trivial, because IPI handlers switch page tables. On the other hand, context switches no longer need to reload %cr3. copyout(9) was rewritten to use vm_fault_quick_hold(). An issue for new copyout(9) is compatibility with wiring user buffers around sysctl handlers. This explains two kind of locks for copyout ptes and accounting of the vslock() calls. The vm_fault_quick_hold() AKA slow path, is only tried after the 'fast path' failed, which temporary changes mapping to the userspace and copies the data to/from small per-cpu buffer in the trampoline. If a page fault occurs during the copy, it is short-circuit by exception.s to not even reach C code. The change was motivated by the need to implement the Meltdown mitigation, but instead of KPTI the full split is done. The i386 architecture already shows the sizing problems, in particular, it is impossible to link clang and lld with debugging. I expect that the issues due to the virtual address space limits would only exaggerate and the split gives more liveness to the platform. Tested by: pho Discussed with: bde Sponsored by: The FreeBSD Foundation MFC after: 1 month Differential revision: https://reviews.freebsd.org/D14633