add config file backups

etc/default/grub

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+# GRUB boot loader configuration
+
+GRUB_DEFAULT=0
+GRUB_TIMEOUT=5
+GRUB_DISTRIBUTOR="Arch"
+GRUB_CMDLINE_LINUX_DEFAULT="loglevel=3 quiet amd_iommu=on amdgpu.ppfeaturemask=0xffffffff"
+GRUB_CMDLINE_LINUX=""
+
+# Preload both GPT and MBR modules so that they are not missed
+GRUB_PRELOAD_MODULES="part_gpt part_msdos"
+
+# Uncomment to enable booting from LUKS encrypted devices
+#GRUB_ENABLE_CRYPTODISK=y
+
+# Set to 'countdown' or 'hidden' to change timeout behavior,
+# press ESC key to display menu.
+GRUB_TIMEOUT_STYLE=menu
+
+# Uncomment to use basic console
+GRUB_TERMINAL_INPUT=console
+
+# Uncomment to disable graphical terminal
+#GRUB_TERMINAL_OUTPUT=console
+
+# The resolution used on graphical terminal
+# note that you can use only modes which your graphic card supports via VBE
+# you can see them in real GRUB with the command `vbeinfo'
+GRUB_GFXMODE=auto
+
+# Uncomment to allow the kernel use the same resolution used by grub
+GRUB_GFXPAYLOAD_LINUX=keep
+
+# Uncomment if you want GRUB to pass to the Linux kernel the old parameter
+# format "root=/dev/xxx" instead of "root=/dev/disk/by-uuid/xxx"
+#GRUB_DISABLE_LINUX_UUID=true
+
+# Uncomment to disable generation of recovery mode menu entries
+GRUB_DISABLE_RECOVERY=true
+
+# Uncomment and set to the desired menu colors.  Used by normal and wallpaper
+# modes only.  Entries specified as foreground/background.
+#GRUB_COLOR_NORMAL="light-blue/black"
+#GRUB_COLOR_HIGHLIGHT="light-cyan/blue"
+
+# Uncomment one of them for the gfx desired, a image background or a gfxtheme
+#GRUB_BACKGROUND="/path/to/wallpaper"
+#GRUB_THEME="/path/to/gfxtheme"
+
+# Uncomment to get a beep at GRUB start
+#GRUB_INIT_TUNE="480 440 1"
+
+# Uncomment to make GRUB remember the last selection. This requires
+# setting 'GRUB_DEFAULT=saved' above.
+#GRUB_SAVEDEFAULT="true"

etc/mkinitcpio.conf

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+# vim:set ft=sh
+# MODULES
+# The following modules are loaded before any boot hooks are
+# run.  Advanced users may wish to specify all system modules
+# in this array.  For instance:
+#     MODULES=(piix ide_disk reiserfs)
+MODULES=(vfio vfio_iommu_type1 vfio_pci vfio_virqfd amdgpu radeon nvidia nvidia_modeset nvidia_uvm )
+
+# BINARIES
+# This setting includes any additional binaries a given user may
+# wish into the CPIO image.  This is run last, so it may be used to
+# override the actual binaries included by a given hook
+# BINARIES are dependency parsed, so you may safely ignore libraries
+BINARIES=()
+
+# FILES
+# This setting is similar to BINARIES above, however, files are added
+# as-is and are not parsed in any way.  This is useful for config files.
+FILES=()
+
+# HOOKS
+# This is the most important setting in this file.  The HOOKS control the
+# modules and scripts added to the image, and what happens at boot time.
+# Order is important, and it is recommended that you do not change the
+# order in which HOOKS are added.  Run 'mkinitcpio -H <hook name>' for
+# help on a given hook.
+# 'base' is _required_ unless you know precisely what you are doing.
+# 'udev' is _required_ in order to automatically load modules
+# 'filesystems' is _required_ unless you specify your fs modules in MODULES
+# Examples:
+##   This setup specifies all modules in the MODULES setting above.
+##   No raid, lvm2, or encrypted root is needed.
+#    HOOKS=(base)
+#
+##   This setup will autodetect all modules for your system and should
+##   work as a sane default
+#    HOOKS=(base udev autodetect block filesystems)
+#
+##   This setup will generate a 'full' image which supports most systems.
+##   No autodetection is done.
+#    HOOKS=(base udev block filesystems)
+#
+##   This setup assembles a pata mdadm array with an encrypted root FS.
+##   Note: See 'mkinitcpio -H mdadm' for more information on raid devices.
+#    HOOKS=(base udev block mdadm encrypt filesystems)
+#
+##   This setup loads an lvm2 volume group on a usb device.
+#    HOOKS=(base udev block lvm2 filesystems)
+#
+##   NOTE: If you have /usr on a separate partition, you MUST include the
+#    usr, fsck and shutdown hooks.
+HOOKS=(base udev autodetect modconf block lvm2 filesystems keyboard fsck)
+
+# COMPRESSION
+# Use this to compress the initramfs image. By default, gzip compression
+# is used. Use 'cat' to create an uncompressed image.
+#COMPRESSION="gzip"
+#COMPRESSION="bzip2"
+#COMPRESSION="lzma"
+#COMPRESSION="xz"
+#COMPRESSION="lzop"
+#COMPRESSION="lz4"
+
+# COMPRESSION_OPTIONS
+# Additional options for the compressor
+#COMPRESSION_OPTIONS=()

etc/modprobe.d/vfio.conf

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+options vfio-pci ids=1002:67df,1002:aaf0,1022:145a,1022:1456,1022:145c