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authorPrefetch2020-04-06 19:39:09 +0200
committerPrefetch2020-04-06 19:39:09 +0200
commit91f46a8893c7902573f5bbc4277b49ff9fd82e7c (patch)
treea3d933bd6b8d3f4c3daa65f1c8122bb4803d2e32 /content/software
parent9560b33e6f66b11578efb43f5cccde1fc8bedf76 (diff)
Change folder structure and clean up
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-title = "Software"
-+++
-
-Software made by me:
-* [winvm.sh](winvm.sh): a QEMU-launching shell script
-I used to emulate Windows for gaming. Since
-[Mesa](https://www.mesa3d.org/) has matured so much and
-[Proton](https://github.com/ValveSoftware/Proton/)
-is in great shape, I won't update it anymore.
-* More coming soon!
-
-Apart from that, here's a [list](/software/recommended) of software I recommend.
diff --git a/content/software/recommended.md b/content/software/recommended.md
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-title = "Recommended software"
-+++
-
-# Recommended software
-
-* [Arch Linux](https://www.archlinux.org/),
- the no-nonsense Linux distribution. It's not perfect,
- but it has the best reward-to-effort ratio for me.
- Mainly its spectacular wealth of available packages
- (11000 main + 53000 AUR!) make it the king.
-* [Alpine Linux](https://alpinelinux.org/),
- the featherlight distribution powering this server.
-* [Void Linux](https://voidlinux.org/),
- another nice lightweight distribution. It has
- a great package management system with good
- support for both binary packages and
- [Gentoo](https://gentoo.org/)-style
- customizable source builds.
-* [i3](https://i3wm.org/), a mature, lightweight,
- responsive tiling window manager without all the fuss.
- I'll move to its successor-in-progress
- [Sway](https://swaywm.org/) as soon as I find it mature enough.
-* [Neovim](https://neovim.io/), which I use instead of its
- venerable ancestor [Vim](https://www.vim.org/) because
- it's faster, cleaner, and more future-facing
- ([source](https://geoff.greer.fm/2015/01/15/why-neovim-is-better-than-vim/)).
- With plugins, of course:
- + [vim-plug](https://github.com/junegunn/vim-plug)
- for simple and effective plugin management.
- + [terminus](https://github.com/wincent/terminus)
- to noticeably improve integration with the window manager.
- + [onedark.vim](https://github.com/joshdick/onedark.vim),
- because it looks great and is easy on the eyes.
- + [lightline.vim](https://github.com/itchyny/lightline.vim)
- for no real reason. Just eye candy I guess.
- + [vim-polyglot](https://github.com/sheerun/vim-polyglot),
- because its syntax definitions are much better.
- + [vim-sneak](https://github.com/justinmk/vim-sneak)
- to make movement less of a hassle.
-* [Alacritty](https://github.com/jwilm/alacritty) as terminal emulator,
- for its speed, minimalism, ease to configure, and native Wayland support.
- I used to use [st](https://st.suckless.org/),
- but it was too annoying to reconfigure.
-* [imv](https://github.com/eXeC64/imv),
- a command-line image viewer that I've found to be
- much simpler and snappier than its more popular cousin
- [feh](https://feh.finalrewind.org/).
-* [zathura](https://git.pwmt.org/pwmt/zathura),
- a fantastic modular viewer for PDFs and similar formats.
- It remembers your position in a document after closing or reloading,
- which is great when using LaTeX, and the main reason
- I prefer it over [MuPDF](https://mupdf.com/).
-* [mpv](https://mpv.io/), a great terminal-friendly media player.
- If you have [youtube-dl](https://youtube-dl.org/) installed
- you can watch videos you would otherwise need a web browser for.
-* [nginx](https://nginx.org/),
- the most popular HTTP server in the world.
- And for good reason: it's lightweight, fast, secure,
- flexible and straightforward to configure.
-* [Zola](https://www.getzola.org/) to generate static webpages,
- including the one you're reading right now.
-* [QEMU](https://www.qemu.org/),
- the Swiss army knife of emulation, and a damn fast one at that,
- albeit with absolutely terrible documentation.
- My old Windows launch script is [here](../winvm.sh).
-* The [musl](https://www.musl-libc.org/) C standard library,
- the only one that remembers it's supposed to stick to the
- official specification rather than pursuing every crazy idea.
-* [BusyBox](https://busybox.net/) bundles the
- most important Unix tools into one portable ELF.
-* [s6](https://skarnet.org/software/s6/),
- a nice Unix service manager and init system.
- I used it in my now long-abandoned
- [LFS](http://linuxfromscratch.org/lfs/index.html) installation.
-* [doas](https://man.openbsd.org/doas),
- sudo for the 21st century, this time actually configurable.
diff --git a/content/software/winvm.sh b/content/software/winvm.sh
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-#!/bin/sh
-
-
-# This is the script I used to use to launch QEMU, emulating
-# Windows 8 with direct physical access to a powerful GPU
-# and the Intel audio controller. This isn't a complete guide,
-# more a collection of tips for any other brave people mad
-# enough to try this. Look up "{VFIO,VGA,GPU,PCI} passthrough"
-# if you want to get proper guidance for this.
-
-# This was working on QEMU 2.12, but note that I'm not updating it anymore.
-
-
-# Create hugepage FS. Don't forget to actually populate it
-# with available RAM using kernel boot arguments or sysctl.
-# The user you run QEMU under (not root!) must be in the kvm group.
-sudo mkdir /dev/hugepages
-sudo mount -t hugetlbfs hugetlbfs /dev/hugepages
-sudo chown root:kvm /dev/hugepages
-sudo chmod 1777 /dev/hugepages # Necessary apparently
-
-
-# The block devices you use for the VM are up to you;
-# mine are at /dev/mapper/win{dows,data}.
-# I recommend refreshing udev after you've created them:
-udevadm trigger
-
-
-### USEFUL KERNEL ARGUMENTS
-# intel_iommu=on : VFIO won't work otherwise. I don't have an AMD CPU,
-# but there should be a similar option for that.
-# vfio-pci.ids=XXXX:YYYY,.. : Only available if VFIO is built into the kernel
-# (requires custom kernel build). Reserves devices at boot.
-# hugepages=X hugepagesz=Y : Create X hugepages at boot of size Y ("2M" or "1G").
-# nohugeiomap : This fixed something, but I can't remember what.
-# intremap=no_x2apic_optout : Some UEFIs don't support the x2apic and disable it.
-# This force-enables it. Had no negative consequences for me.
-# pci=pcie_bus_peer2peer : This was the silver bullet for me, but YMMV.
-# isolcpus=X-Y nohz_full=X-Y rcu_nocbs=X-Y : You MUST use CPU pinning if you add this.
-# X-Y is an inclusive range of CPU cores to
-# to reserve for the vCPUs.
-
-
-### MACHINE OPTIONS
-QEMU="-name debug-threads=on -enable-kvm -machine q35,accel=kvm,kernel_irqchip=on,vmport=off,mem-merge=off"
-# -debug-threads=on : name the vCPU threads, useful for CPU pinning.
-# -enable-kvm : enable KVM acceleration.
-# -machine q35 : emulate the Q35 chipset, which is closer to a modern PC.
-# accel=kvm : probably identical to -enable-kvm, but just in case.
-# kernel_irqchip=on : emulate an IRQ chip in the kernel instead of in QEMU.
-# vmport=off : don't emulate a VMWare I/O port.
-# mem-merge=off : disable KSM, since there is only one VM.
-
-### CPU OPTIONS
-QEMU="$QEMU -cpu host,kvm=off,hv_time,hv_relaxed,hv_spinlocks=0x1fff,hv_vpindex,hv_reset,hv_runtime,hv_crash,hv_vendor_id=NvidiaFix"
-# -cpu host : use the host CPU instead of emulating one.
-# kvm=off : don't declare self as KVM to the guest, as Windows doesn't care.
-# hv_* : pretend to be Hyper-V, so Windows can optimize itself for running as a guest.
-# https://www.reddit.com/r/VFIO/comments/479xnx/guests_with_nvidia_gpus_can_enable_hyperv/
-QEMU="$QEMU -smp sockets=1,cores=4,threads=1"
-# -smp ... : processor layout to emulate.
-
-### RAM OPTIONS
-QEMU="$QEMU -m 12G -mem-path /dev/hugepages -mem-prealloc"
-# -m x : amount of guest RAM.
-# -mem-path ... : allocate memory from this pool. Can be a file or "hugepages" (mount -t hugetlbfs).
-# -mem-prealloc : allocate all memory from -mem-path at startup rather than on demand.
-
-### EMULATION OPTIONS
-QEMU="$QEMU -vga none -nodefaults -rtc base=utc,clock=host,driftfix=none"
-# -vga none : don't emulate a graphics card, since we're using a physical one.
-# -nodefaults : don't emulate any of the default devices.
-# -rtc base=utc : emulate an RTC starting at host's local time.
-# clock=host : use the host's accurate clock for VM timekeeping.
-# driftfix=none : don't fix Windows' clock drifting, as that involves injecting interrupts.
-QEMU="$QEMU -drive if=pflash,format=raw,file=/usr/share/edk2-ovmf/OVMF_CODE.fd,readonly"
-QEMU="$QEMU -drive if=pflash,format=raw,file=/usr/share/edk2-ovmf/OVMF_VARS.fd"
-# These options enable using the OVMF virtual UEFI instead of SeaBIOS.
-# The exact file locations might vary; this is for Gentoo.
-
-### PCI PASSTHROUGH
-QEMU="$QEMU -device ioh3420,chassis=1,port=1,multifunction=on,bus=pcie.0,addr=1c.0,id=pcie.1"
-# -device ioh3420 : emulate a PCIe I/O hub to attach the GPU to.
-# chassis=1,port=1 : ?
-# bus=pcie.0,addr=1c.0 : place it at 00:1c.0 on the guest.
-# id=pcie.1 : refer to this device as "pcie.1" below.
-QEMU="$QEMU -device vfio-pci,host=04:00.0,multifunction=on,bus=pcie.1,addr=00.0"
-# GPU VGA controller.
-# multifunction=on : this device isn't just a VGA controller.
-# bus=pcie.1,addr=00.0 : attach it to the I/O hub as function 0.
-QEMU="$QEMU -device vfio-pci,host=04:00.1,bus=pcie.1,addr=00.1"
-# GPU HDMI audio controller.
-# bus=pcie.1,addr=00.1 : attach it to the I/O hub as function 1.
-QEMU="$QEMU -device vfio-pci,host=00:1b.0,bus=pcie.0,addr=1b.0"
-# Intel HDA audio controller.
-# bus=pcie.0,addr=1b.0 : place the device where Intel usually puts its HDA controller.
-
-#QEMU="$QEMU -device intel-iommu,intremap=on"
-# Expose the IOMMU to the guest too. Probably useless in this case.
-
-### USB PASSTHROUGH
-QEMU="$QEMU -usb"
-# Enable USB support.
-QEMU="$QEMU -device usb-host,vendorid=0xXXXX,productid=0xYYYY"
-# If one of these can't be found, it's simply ignored. Use lsusb to find the IDs.
-
-### STORAGE OPTIONS
-QEMU="$QEMU -drive if=ide,format=raw,discard=unmap,detect-zeroes=unmap,file=/dev/mapper/windows"
-QEMU="$QEMU -drive if=ide,format=raw,discard=unmap,detect-zeroes=unmap,file=/dev/mapper/windata"
-# if=ide : emulate an IDE (SATA) drive. NVMe is possible too, but more of a hassle.
-# format=raw : talk directly to the drive. Take care: your guest GPT might end up inside a partition.
-# discard=unmap,detect-zeroes=unmap : send discards to the physical device if the guest asks for it.
-# file=x : backing physical block device.
-
-#QEMU="$QEMU -cdrom ~/Windows.iso"
-# For recovery purposes. I strongly recommend keeping the ISO around.
-
-### NETWORK OPTIONS
-QEMU="$QEMU -netdev user,id=usermode"
-# -netdev user : emulate a user-mode NIC, which is more than fast enough in my experience.
-# id=usermode : call the interface "usermode"
-QEMU="$QEMU -device e1000,netdev=usermode,mac=88:88:88:88:88:88,bus=pcie.0,addr=19.0"
-# -device e1000 : emulate a gigabit ethernet device.
-# netdev=usermode : use "usermode" as the host backend.
-# mac=x : set the MAC address as seen by the guest.
-# bus=pcie.0,addr=19.0 : place the device where Intel usually puts its NIC.
-
-
-# GERONIMO!
-qemu-system-x86_64 $QEMU -daemonize
-# -daemonize : fork once the VM has been initialized.
-
-QEMU_PID=`pidof qemu-system-x86_64`
-echo -e "\033[37;1mQEMU started at PID $QEMU_PID, emulating Windows in Hyper-V mode.\033[m"
-
-sleep 2 # Make sure the VM threads have been spawned.
-
-# Move kernel processes to the housekeeping core (core 0 here).
-#echo 00001 > /sys/bus/workqueue/devices/writeback/cpumask
-#echo 00001 > /sys/bus/workqueue/devices/nvme-wq/cpumask
-
-# Do CPU pinning using "taskset -pc X Y" here,
-# using /proc/$QEMU_PID/task/*/stat to find the thread name.
-# Sorry, my old script for this was so horrible that I don't want to share it.