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https://github.com/Ponce/slackbuilds
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46 lines
2.1 KiB
Text
46 lines
2.1 KiB
Text
kernel-xen.sh: This script builds the Linux Kernel for a Xen Hypervisor.
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The configuration file included here is based on a generic Slackware64 kernel
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config. To run "make menuconfig" before compiling a Xen kernel, use the
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"MENUCONFIG=yes" variable.
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Originally, booting a Xen kernel with LILO bootloader is not supported, so GRUB
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has to be used. For those that preffer LILO over GRUB, there is a way to
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accomplish this with mbootpack. Basically, mbootpack takes Linux kernel, initrd
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and Xen VMM, and packages them up into a single file that looks like a bzImage
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Linux kernel. To select how kernel is packed use "BOOTLOADER=" variable. Valid
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options are "lilo" and "grub". Because generic kernel requires an initrd image,
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there are aditional variables that can be used; ROOTMOD (takes a list of
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colon-delimited modules to build into initrd), ROOTFS (takes a name of a module
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to use for root filesystem) and ROOTDEV (takes a name of root filesystem
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device).
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After a new kernel image is created, and if bootloader of choice is LILO,
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include these lines in /etc/lilo.conf:
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image = /boot/vmlinuz-xen
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root = /dev/sda2
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label = XenLinux
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append="dom0_mem=512M -- nomodeset"
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read-only
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Note: everything before "--" is passed to Xen, and everything after "--" is
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passed to the Linux kernel.
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When using GRUB, you might want to include these lines in /boot/grub/menu.lst:
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title Slackware XenLinux 14.1
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root (hd0,0)
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kernel /boot/xen.gz dom0_mem=524288 console=vga
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module /boot/vmlinuz-xen root=/dev/sda2 ro console=tty0 nomodeset
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module /boot/initrd-xen.gz
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Here are some notes/guidances if your dom0 crashes, freezes or maybe the
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screen goes blank at boot:
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- Specify an out of range number to "fbcon" to disable framebuffer altogether,
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which, for example, is done by appending fbcon=map:9 to the Linux kernel (To
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see a list of available devices in your system check /proc/fb).
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- Blacklist framebuffer module from loading. This one requires a bit of
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digging arround in dmesg/lsmod to find out wich module is in use.
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- Disable framebuffer devices by setting CONFIG_FB=n in kernel config.
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- Try booting with another VGA card (sorry).
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