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path: root/src/runtime/lfstack_64bit.go
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2023-04-18runtime: change lfstack support to taggedPointerIan Lance Taylor
This is a refactoring with no change in behavior, in preparation for future netpoll work. For #59545 Change-Id: I493c5fd0f49f31b75787f7b5b89c544bed73f64f Reviewed-on: https://go-review.googlesource.com/c/go/+/484836 TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Bryan Mills <bcmills@google.com> Auto-Submit: Ian Lance Taylor <iant@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Orlando Labao <orlando.labao43@gmail.com>
2022-08-04runtime: support riscv64 SV57 modeDmitry Vyukov
riscv64 has SV57 mode when user-space VA is 56 bits. Linux kernel recently got support for this mode and Go binaries started crashing as: runtime: lfstack.push invalid packing: node=0xffffff5908a940 cnt=0x1 packed=0xffff5908a9400001 -> node=0xffff5908a940 Adjust lfstack code to use only 8 top bits of pointers on riscv64. For context see: https://groups.google.com/g/syzkaller-bugs/c/lU0GQTZoNQQ/m/O_c3vmE3AAAJ Update #54104 Change-Id: Ib5d3d6a79c0c6eddf11618d73fcc8bc1832a9c25 Reviewed-on: https://go-review.googlesource.com/c/go/+/409055 Reviewed-by: Joel Sing <joel@sing.id.au> Reviewed-by: Meng Zhuo <mzh@golangcn.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
2022-05-20runtime: add build tag for common support on linux/loong64Xiaodong Liu
Contributors to the loong64 port are: Weining Lu <luweining@loongson.cn> Lei Wang <wanglei@loongson.cn> Lingqin Gong <gonglingqin@loongson.cn> Xiaolin Zhao <zhaoxiaolin@loongson.cn> Meidan Li <limeidan@loongson.cn> Xiaojuan Zhai <zhaixiaojuan@loongson.cn> Qiyuan Pu <puqiyuan@loongson.cn> Guoqi Chen <chenguoqi@loongson.cn> This port has been updated to Go 1.15.6: https://github.com/loongson/go Updates #46229 Change-Id: Ide01fb8a39fe3e890f6cbc5d28f4a1d47eb5d79b Reviewed-on: https://go-review.googlesource.com/c/go/+/368081 TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Run-TryBot: Ian Lance Taylor <iant@google.com>
2021-10-28all: go fix -fix=buildtag std cmd (except for bootstrap deps, vendor)Russ Cox
When these packages are released as part of Go 1.18, Go 1.16 will no longer be supported, so we can remove the +build tags in these files. Ran go fix -fix=buildtag std cmd and then reverted the bootstrapDirs as defined in src/cmd/dist/buildtool.go, which need to continue to build with Go 1.4 for now. Also reverted src/vendor and src/cmd/vendor, which will need to be updated in their own repos first. Manual changes in runtime/pprof/mprof_test.go to adjust line numbers. For #41184. Change-Id: Ic0f93f7091295b6abc76ed5cd6e6746e1280861e Reviewed-on: https://go-review.googlesource.com/c/go/+/344955 Trust: Russ Cox <rsc@golang.org> Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-02-20all: go fmt std cmd (but revert vendor)Russ Cox
Make all our package sources use Go 1.17 gofmt format (adding //go:build lines). Part of //go:build change (#41184). See https://golang.org/design/draft-gobuild Change-Id: Ia0534360e4957e58cd9a18429c39d0e32a6addb4 Reviewed-on: https://go-review.googlesource.com/c/go/+/294430 Trust: Russ Cox <rsc@golang.org> Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-01-19runtime: add support for linux/riscv64Joel Sing
Based on riscv-go port. Updates #27532 Change-Id: If522807a382130be3c8d40f4b4c1131d1de7c9e3 Reviewed-on: https://go-review.googlesource.com/c/go/+/204632 Run-TryBot: Joel Sing <joel@sing.id.au> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2018-11-26runtime: handle 64bits addresses for AIXClément Chigot
This commit allows the runtime to handle 64bits addresses returned by mmap syscall on AIX. Mmap syscall returns addresses on 59bits on AIX. But the Arena implementation only allows addresses with less than 48 bits. This commit increases the arena size up to 1<<60 for aix/ppc64. Update: #25893 Change-Id: Iea72e8a944d10d4f00be915785e33ae82dd6329e Reviewed-on: https://go-review.googlesource.com/c/138736 Reviewed-by: Austin Clements <austin@google.com>
2018-05-08runtime: add js/wasm architectureRichard Musiol
This commit adds the js/wasm architecture to the runtime package. Currently WebAssembly has no support for threads yet, see https://github.com/WebAssembly/design/issues/1073. Because of that, there is no preemption of goroutines and no sysmon goroutine. Design doc: https://docs.google.com/document/d/131vjr4DH6JFnb-blm_uRdaC0_Nv3OUwjEY5qVCxCup4 About WebAssembly assembly files: https://docs.google.com/document/d/1GRmy3rA4DiYtBlX-I1Jr_iHykbX8EixC3Mq0TCYqbKc Updates #18892 Change-Id: I7f12d21b5180500d55ae9fd2f7e926a1731db391 Reviewed-on: https://go-review.googlesource.com/103877 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com>
2018-02-21runtime: clarify address space limit constants and commentsAustin Clements
Now that we support the full non-contiguous virtual address space of amd64 hardware, some of the comments and constants related to this are out of date. This renames memLimitBits to heapAddrBits because 1<<memLimitBits is no longer the limit of the address space and rewrites the comment to focus first on hardware limits (which span OSes) and then discuss kernel limits. Second, this eliminates the memLimit constant because there's no longer a meaningful "highest possible heap pointer value" on amd64. Updates #23862. Change-Id: I44b32033d2deb6b69248fb8dda14fc0e65c47f11 Reviewed-on: https://go-review.googlesource.com/95498 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rick Hudson <rlh@golang.org>
2018-02-15runtime: move comment about address space sizes to malloc.goAustin Clements
Currently there's a detailed comment in lfstack_64bit.go about address space limitations on various architectures. Since that's now relevant to malloc, move it to a more prominent place in the documentation for memLimitBits. Updates #10460. Change-Id: If9708291cf3a288057b8b3ba0ba6a59e3602bbd6 Reviewed-on: https://go-review.googlesource.com/85889 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rick Hudson <rlh@golang.org>
2018-02-15runtime: expand/update lfstack address space assumptionsAustin Clements
I was spelunking Linux's address space code and found that some of the information about maximum virtual addresses in lfstack's comments was out of date. This expands and updates the comment. Change-Id: I9f54b23e6b266b3c5cc20259a849231fb751f6e7 Reviewed-on: https://go-review.googlesource.com/85875 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rick Hudson <rlh@golang.org>
2016-04-11runtime: merge lfstack_amd64.go into lfstack_64bit.goDave Cheney
Merge the amd64 lfstack implementation into the general 64 bit implementation. Change-Id: Id9ed61b90d2e3bc3b0246294c03eb2c92803b6ca Reviewed-on: https://go-review.googlesource.com/21707 Run-TryBot: Dave Cheney <dave@cheney.net> Reviewed-by: Minux Ma <minux@golang.org>
2016-04-07runtime: add s390x support (new files and lfstack_64bit.go modifications)Michael Munday
Change-Id: I51c0a332e3cbdab348564e5dcd27583e75e4b881 Reviewed-on: https://go-review.googlesource.com/20946 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-04-07Revert "runtime: merge lfstack{Pack,Unpack} into one file"Dave Cheney
This broke solaris, which apparently does use the upper 17 bits of the address space. This reverts commit 3b02c5b1b66df9cdb23d5a3243bb37b2c312ea1b. Change-Id: Iedfe54abd0384960845468205f20191a97751c0b Reviewed-on: https://go-review.googlesource.com/21652 Reviewed-by: Dave Cheney <dave@cheney.net>
2016-04-07runtime: merge lfstack{Pack,Unpack} into one fileDave Cheney
Merge the remaining lfstack{Pack,Unpack} implemetations into one file. unsafe.Sizeof(uintptr(0)) == 4 is a constant comparison so this branch folds away at compile time. Dmitry confirmed that the upper 17 bits of an address will be zero for a user mode pointer, so there is no need to sign extend on amd64 during unpack, so we can reuse the same implementation as all othe 64 bit archs. Change-Id: I99f589416d8b181ccde5364c9c2e78e4a5efc7f1 Reviewed-on: https://go-review.googlesource.com/21597 Run-TryBot: Dave Cheney <dave@cheney.net> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Minux Ma <minux@golang.org>
2016-04-06runtime: remove unused return value from lfstackUnpackDave Cheney
None of the two places that call lfstackUnpack use the second argument. This simplifies a followup CL that merges the lfstack{Pack,Unpack} implementations. Change-Id: I3c93f6259da99e113d94f8c8027584da79c1ac2c Reviewed-on: https://go-review.googlesource.com/21595 Run-TryBot: Dave Cheney <dave@cheney.net> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-04-06runtime: merge 64bit lfstack implsDave Cheney
Merge all the 64bit lfstack impls into one file, adjust build tags to match. Merge all the comments on the various lfstack implementations for posterity. lfstack_amd64.go can probably be merged, but it is slightly different so that will happen in a followup. Change-Id: I5362d5e127daa81c9cb9d4fa8a0cc5c5e5c2707c Reviewed-on: https://go-review.googlesource.com/21591 Run-TryBot: Dave Cheney <dave@cheney.net> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Minux Ma <minux@golang.org>
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