Pull pv_ops-xen into release branch (22ca532a) · Commits · e / devices / android_kernel_fairphone_FP3

Documentation/ia64/xen.txt

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			Recipe for getting/building/running Xen/ia64 with pv_ops
			--------------------------------------------------------

			This recipe describes how to get xen-ia64 source and build it,
			and run domU with pv_ops.

			============
			Requirements
			============

			- python
			- mercurial
			it (aka "hg") is an open-source source code
			management software. See the below.
			http://www.selenic.com/mercurial/wiki/
			- git
			- bridge-utils

			=================================
			Getting and Building Xen and Dom0
			=================================

			My environment is;
			Machine : Tiger4
			Domain0 OS : RHEL5
			DomainU OS : RHEL5

			1. Download source
			# hg clone http://xenbits.xensource.com/ext/ia64/xen-unstable.hg
			# cd xen-unstable.hg
			# hg clone http://xenbits.xensource.com/ext/ia64/linux-2.6.18-xen.hg

			2. # make world

			3. # make install-tools

			4. copy kernels and xen
			# cp xen/xen.gz /boot/efi/efi/redhat/
			# cp build-linux-2.6.18-xen_ia64/vmlinux.gz \
			/boot/efi/efi/redhat/vmlinuz-2.6.18.8-xen

			5. make initrd for Dom0/DomU
			# make -C linux-2.6.18-xen.hg ARCH=ia64 modules_install \
			O=$(/bin/pwd)/build-linux-2.6.18-xen_ia64
			# mkinitrd -f /boot/efi/efi/redhat/initrd-2.6.18.8-xen.img \
			2.6.18.8-xen --builtin mptspi --builtin mptbase \
			--builtin mptscsih --builtin uhci-hcd --builtin ohci-hcd \
			--builtin ehci-hcd

			================================
			Making a disk image for guest OS
			================================

			1. make file
			# dd if=/dev/zero of=/root/rhel5.img bs=1M seek=4096 count=0
			# mke2fs -F -j /root/rhel5.img
			# mount -o loop /root/rhel5.img /mnt
			# cp -ax /{dev,var,etc,usr,bin,sbin,lib} /mnt
			# mkdir /mnt/{root,proc,sys,home,tmp}

			Note: You may miss some device files. If so, please create them
			with mknod. Or you can use tar instead of cp.

			2. modify DomU's fstab
			# vi /mnt/etc/fstab
			/dev/xvda1 / ext3 defaults 1 1
			none /dev/pts devpts gid=5,mode=620 0 0
			none /dev/shm tmpfs defaults 0 0
			none /proc proc defaults 0 0
			none /sys sysfs defaults 0 0

			3. modify inittab
			set runlevel to 3 to avoid X trying to start
			# vi /mnt/etc/inittab
			id:3:initdefault:
			Start a getty on the hvc0 console
			X0:2345:respawn:/sbin/mingetty hvc0
			tty1-6 mingetty can be commented out

			4. add hvc0 into /etc/securetty
			# vi /mnt/etc/securetty (add hvc0)

			5. umount
			# umount /mnt

			FYI, virt-manager can also make a disk image for guest OS.
			It's GUI tools and easy to make it.

			==================
			Boot Xen & Domain0
			==================

			1. replace elilo
			elilo of RHEL5 can boot Xen and Dom0.
			If you use old elilo (e.g RHEL4), please download from the below
			http://elilo.sourceforge.net/cgi-bin/blosxom
			and copy into /boot/efi/efi/redhat/
			# cp elilo-3.6-ia64.efi /boot/efi/efi/redhat/elilo.efi

			2. modify elilo.conf (like the below)
			# vi /boot/efi/efi/redhat/elilo.conf
			prompt
			timeout=20
			default=xen
			relocatable

			image=vmlinuz-2.6.18.8-xen
			label=xen
			vmm=xen.gz
			initrd=initrd-2.6.18.8-xen.img
			read-only
			append=" -- rhgb root=/dev/sda2"

			The append options before "--" are for xen hypervisor,
			the options after "--" are for dom0.

			FYI, your machine may need console options like
			"com1=19200,8n1 console=vga,com1". For example,
			append="com1=19200,8n1 console=vga,com1 -- rhgb console=tty0 \
			console=ttyS0 root=/dev/sda2"

			=====================================
			Getting and Building domU with pv_ops
			=====================================

			1. get pv_ops tree
			# git clone http://people.valinux.co.jp/~yamahata/xen-ia64/linux-2.6-xen-ia64.git/

			2. git branch (if necessary)
			# cd linux-2.6-xen-ia64/
			# git checkout -b your_branch origin/xen-ia64-domu-minimal-2008may19
			(Note: The current branch is xen-ia64-domu-minimal-2008may19.
			But you would find the new branch. You can see with
			"git branch -r" to get the branch lists.
			http://people.valinux.co.jp/~yamahata/xen-ia64/for_eagl/linux-2.6-ia64-pv-ops.git/
			is also available. The tree is based on
			git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 test)


			3. copy .config for pv_ops of domU
			# cp arch/ia64/configs/xen_domu_wip_defconfig .config

			4. make kernel with pv_ops
			# make oldconfig
			# make

			5. install the kernel and initrd
			# cp vmlinux.gz /boot/efi/efi/redhat/vmlinuz-2.6-pv_ops-xenU
			# make modules_install
			# mkinitrd -f /boot/efi/efi/redhat/initrd-2.6-pv_ops-xenU.img \
			2.6.26-rc3xen-ia64-08941-g1b12161 --builtin mptspi \
			--builtin mptbase --builtin mptscsih --builtin uhci-hcd \
			--builtin ohci-hcd --builtin ehci-hcd

			========================
			Boot DomainU with pv_ops
			========================

			1. make config of DomU
			# vi /etc/xen/rhel5
			kernel = "/boot/efi/efi/redhat/vmlinuz-2.6-pv_ops-xenU"
			ramdisk = "/boot/efi/efi/redhat/initrd-2.6-pv_ops-xenU.img"
			vcpus = 1
			memory = 512
			name = "rhel5"
			disk = [ 'file:/root/rhel5.img,xvda1,w' ]
			root = "/dev/xvda1 ro"
			extra= "rhgb console=hvc0"

			2. After boot xen and dom0, start xend
			# /etc/init.d/xend start
			( In the debugging case, # XEND_DEBUG=1 xend trace_start )

			3. start domU
			# xm create -c rhel5

			=========
			Reference
			=========
			- Wiki of Xen/IA64 upstream merge
			http://wiki.xensource.com/xenwiki/XenIA64/UpstreamMerge

			Written by Akio Takebe <takebe_akio@jp.fujitsu.com> on 28 May 2008

arch/ia64/Kconfig

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	@@ -109,6 +109,33 @@ config AUDIT_ARCH
	bool		bool
	default y		default y

			menuconfig PARAVIRT_GUEST
			bool "Paravirtualized guest support"
			help
			Say Y here to get to see options related to running Linux under
			various hypervisors. This option alone does not add any kernel code.

			If you say N, all options in this submenu will be skipped and disabled.

			if PARAVIRT_GUEST

			config PARAVIRT
			bool "Enable paravirtualization code"
			depends on PARAVIRT_GUEST
			default y
			bool
			default y
			help
			This changes the kernel so it can modify itself when it is run
			under a hypervisor, potentially improving performance significantly
			over full virtualization. However, when run without a hypervisor
			the kernel is theoretically slower and slightly larger.


			source "arch/ia64/xen/Kconfig"

			endif

	choice		choice
	prompt "System type"		prompt "System type"
	default IA64_GENERIC		default IA64_GENERIC
	@@ -130,6 +157,7 @@ config IA64_GENERIC
	SGI-SN2 For SGI Altix systems		SGI-SN2 For SGI Altix systems
	SGI-UV For SGI UV systems		SGI-UV For SGI UV systems
	Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>		Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
			Xen-domU For xen domU system

	If you don't know what to do, choose "generic".		If you don't know what to do, choose "generic".

	@@ -180,6 +208,10 @@ config IA64_HP_SIM
	bool "Ski-simulator"		bool "Ski-simulator"
	select SWIOTLB		select SWIOTLB

			config IA64_XEN_GUEST
			bool "Xen guest"
			depends on XEN

	endchoice		endchoice

	choice		choice

arch/ia64/Makefile

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	@@ -56,9 +56,11 @@ core-$(CONFIG_IA64_DIG) += arch/ia64/dig/
	core-$(CONFIG_IA64_GENERIC) += arch/ia64/dig/		core-$(CONFIG_IA64_GENERIC) += arch/ia64/dig/
	core-$(CONFIG_IA64_HP_ZX1) += arch/ia64/dig/		core-$(CONFIG_IA64_HP_ZX1) += arch/ia64/dig/
	core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/		core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
			core-$(CONFIG_IA64_XEN_GUEST) += arch/ia64/dig/
	core-$(CONFIG_IA64_SGI_SN2) += arch/ia64/sn/		core-$(CONFIG_IA64_SGI_SN2) += arch/ia64/sn/
	core-$(CONFIG_IA64_SGI_UV) += arch/ia64/uv/		core-$(CONFIG_IA64_SGI_UV) += arch/ia64/uv/
	core-$(CONFIG_KVM) += arch/ia64/kvm/		core-$(CONFIG_KVM) += arch/ia64/kvm/
			core-$(CONFIG_XEN) += arch/ia64/xen/

	drivers-$(CONFIG_PCI) += arch/ia64/pci/		drivers-$(CONFIG_PCI) += arch/ia64/pci/
	drivers-$(CONFIG_IA64_HP_SIM) += arch/ia64/hp/sim/		drivers-$(CONFIG_IA64_HP_SIM) += arch/ia64/hp/sim/

arch/ia64/include/asm/break.h

+9 −0

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	@@ -20,4 +20,13 @@
	*/		*/
	#define __IA64_BREAK_SYSCALL 0x100000		#define __IA64_BREAK_SYSCALL 0x100000

			/*
			* Xen specific break numbers:
			*/
			#define __IA64_XEN_HYPERCALL 0x1000
			/* [__IA64_XEN_HYPERPRIVOP_START, __IA64_XEN_HYPERPRIVOP_MAX] is used
			for xen hyperprivops */
			#define __IA64_XEN_HYPERPRIVOP_START 0x1
			#define __IA64_XEN_HYPERPRIVOP_MAX 0x1a

	#endif /* _ASM_IA64_BREAK_H */		#endif /* _ASM_IA64_BREAK_H */

arch/ia64/include/asm/machvec.h

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	@@ -128,6 +128,8 @@ extern void machvec_tlb_migrate_finish (struct mm_struct *);
	# include <asm/machvec_sn2.h>		# include <asm/machvec_sn2.h>
	# elif defined (CONFIG_IA64_SGI_UV)		# elif defined (CONFIG_IA64_SGI_UV)
	# include <asm/machvec_uv.h>		# include <asm/machvec_uv.h>
			# elif defined (CONFIG_IA64_XEN_GUEST)
			# include <asm/machvec_xen.h>
	# elif defined (CONFIG_IA64_GENERIC)		# elif defined (CONFIG_IA64_GENERIC)

	# ifdef MACHVEC_PLATFORM_HEADER		# ifdef MACHVEC_PLATFORM_HEADER