From fe4bd53f01c469ad62848fbc85b06185b9f1e653 Mon Sep 17 00:00:00 2001 From: Prefetch Date: Sat, 8 Jun 2019 20:01:43 +0000 Subject: Create repository --- public/404.html | 10 +++ public/articles/index.html | 31 +++++++ public/index.html | 38 +++++++++ public/main.css | 29 +++++++ public/robots.txt | 2 + public/sheats/index.html | 34 ++++++++ public/sitemap.xml | 28 +++++++ public/software/index.html | 40 +++++++++ public/software/recommended/index.html | 107 ++++++++++++++++++++++++ public/software/winvm.sh | 144 +++++++++++++++++++++++++++++++++ 10 files changed, 463 insertions(+) create mode 100644 public/404.html create mode 100644 public/articles/index.html create mode 100644 public/index.html create mode 100644 public/main.css create mode 100644 public/robots.txt create mode 100644 public/sheats/index.html create mode 100644 public/sitemap.xml create mode 100644 public/software/index.html create mode 100644 public/software/recommended/index.html create mode 100644 public/software/winvm.sh (limited to 'public') diff --git a/public/404.html b/public/404.html new file mode 100644 index 0000000..f7d50b1 --- /dev/null +++ b/public/404.html @@ -0,0 +1,10 @@ + + + + File Not Found: 404. + + +

Oops!

+

File Not Found: 404.

+ + diff --git a/public/articles/index.html b/public/articles/index.html new file mode 100644 index 0000000..14a9679 --- /dev/null +++ b/public/articles/index.html @@ -0,0 +1,31 @@ + + + + + + Prefetch | Articles + + + + +
+
PREFETCH
+ +
Articles  
+ +
Software
+ +
Sheats
+ +
+
+
+ +

Coming soon-ish!

+ + +
+
+© "Prefetch".   Licensed under CC BY-SA 4.0. + + diff --git a/public/index.html b/public/index.html new file mode 100644 index 0000000..183f674 --- /dev/null +++ b/public/index.html @@ -0,0 +1,38 @@ + + + + +Prefetch + + + +
+
PREFETCH
+ +
Articles  
+ +
Software
+ +
Sheats
+ +
+
+
+

Hello, and welcome to my website! +This is where I gather any of my work +that I want to share with the rest of the world. +Go ahead and explore.

+

I aim to keep this website forever JavaScript-free, +and to maintain my A+ score for +TLS quality and +HTTP security headers.

+

This server is hosted by Scaleway, +with Gandi as the domain registrar +and Let's Encrypt providing TLS. +I've had a solid experience with all of these, and can heartily recommend them.

+ +
+
+© "Prefetch".   Licensed under CC BY-SA 4.0. + + diff --git a/public/main.css b/public/main.css new file mode 100644 index 0000000..0394165 --- /dev/null +++ b/public/main.css @@ -0,0 +1,29 @@ +body { + background-color:#282c34; + color:#abb2bf; + max-width:72ch; + text-align:justify; + margin:auto; + padding:2ch; +} + +a { + text-decoration:none; + color:#61afef; +} + +.content { min-height: calc(100vh - 20ch); } + +.navbar a:link { color:#abb2bf; } +.navbar a:visited { color:#abb2bf; } +.navbar a:focus { color:#61afef; } +.navbar a:hover { color:#61afef; } +.navbar a:active { color:#61afef; } +.navbar { + display:flex; + flex-direction:row; + font-size:24px; + text-align:right; +} +.navitem { flex:1; } +.navhome { text-align:left; } diff --git a/public/robots.txt b/public/robots.txt new file mode 100644 index 0000000..bccda9c --- /dev/null +++ b/public/robots.txt @@ -0,0 +1,2 @@ +User-agent: * +Sitemap: https://prefet.ch/sitemap.xml diff --git a/public/sheats/index.html b/public/sheats/index.html new file mode 100644 index 0000000..2c982f8 --- /dev/null +++ b/public/sheats/index.html @@ -0,0 +1,34 @@ + + + + + + Prefetch | Sheats + + + + +
+
PREFETCH
+ +
Articles  
+ +
Software
+ +
Sheats
+ +
+
+
+ +

"Sheat" is an ugly contraction of "cheat sheet". +Here I will post heavily condensed references for topics +like mathematics or languages.

+

For now, though: "Coming soon-ish!"

+ + +
+
+© "Prefetch".   Licensed under CC BY-SA 4.0. + + diff --git a/public/sitemap.xml b/public/sitemap.xml new file mode 100644 index 0000000..08bde71 --- /dev/null +++ b/public/sitemap.xml @@ -0,0 +1,28 @@ + + + + https://prefet.ch/ + + + + + https://prefet.ch/articles/ + + + + + https://prefet.ch/sheats/ + + + + + https://prefet.ch/software/ + + + + + https://prefet.ch/software/recommended/ + + + + diff --git a/public/software/index.html b/public/software/index.html new file mode 100644 index 0000000..af8c330 --- /dev/null +++ b/public/software/index.html @@ -0,0 +1,40 @@ + + + + + + Prefetch | Software + + + + +
+
PREFETCH
+ +
Articles  
+ +
Software
+ +
Sheats
+ +
+
+
+ +

Software made by me:

+ +

Apart from that, here's a list of software I recommend.

+ + +
+
+© "Prefetch".   Licensed under CC BY-SA 4.0. + + diff --git a/public/software/recommended/index.html b/public/software/recommended/index.html new file mode 100644 index 0000000..6e16413 --- /dev/null +++ b/public/software/recommended/index.html @@ -0,0 +1,107 @@ + + + + + + Prefetch | Recommended software + + + + +
+
PREFETCH
+ +
Articles  
+ +
Software
+ +
Sheats
+ +
+
+
+ +

Recommended software

+ + + +
+
+© "Prefetch".   Licensed under CC BY-SA 4.0. + + diff --git a/public/software/winvm.sh b/public/software/winvm.sh new file mode 100644 index 0000000..09283e0 --- /dev/null +++ b/public/software/winvm.sh @@ -0,0 +1,144 @@ +#!/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. -- cgit v1.2.3