Pull pv_ops-xen into release branch

50 files changed, 4631 insertions, 11 deletions

diff --git a/Documentation/ia64/xen.txt b/Documentation/ia64/xen.txt
new file mode 100644
index 00000000000..c61a99f7c8b
--- /dev/null
+++ b/Documentation/ia64/xen.txt
@@ -0,0 +1,183 @@
+       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
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 892f296f99b..239ad6b1c74 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -109,6 +109,33 @@ config AUDIT_ARCH
 	bool
 	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
 	prompt "System type"
 	default IA64_GENERIC
@@ -130,6 +157,7 @@ config IA64_GENERIC
 	  SGI-SN2		For SGI Altix systems
 	  SGI-UV		For SGI UV systems
 	  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".
 
@@ -180,6 +208,10 @@ config IA64_HP_SIM
 	bool "Ski-simulator"
 	select SWIOTLB
 
+config IA64_XEN_GUEST
+	bool "Xen guest"
+	depends on XEN
+
 endchoice
 
 choice
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index 905d25b13d5..40242501bcd 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -56,9 +56,11 @@ core-$(CONFIG_IA64_DIG) 	+= arch/ia64/dig/
 core-$(CONFIG_IA64_GENERIC) 	+= arch/ia64/dig/
 core-$(CONFIG_IA64_HP_ZX1)	+= arch/ia64/dig/
 core-$(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-$(CONFIG_IA64_SGI_UV)	+= arch/ia64/uv/
 core-$(CONFIG_KVM) 		+= arch/ia64/kvm/
+core-$(CONFIG_XEN)		+= arch/ia64/xen/
 
 drivers-$(CONFIG_PCI)		+= arch/ia64/pci/
 drivers-$(CONFIG_IA64_HP_SIM)	+= arch/ia64/hp/sim/
diff --git a/arch/ia64/include/asm/break.h b/arch/ia64/include/asm/break.h
index f0340203989..e90c40ec9ed 100644
--- a/arch/ia64/include/asm/break.h
+++ b/arch/ia64/include/asm/break.h
@@ -20,4 +20,13 @@
  */
 #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 */
diff --git a/arch/ia64/include/asm/machvec.h b/arch/ia64/include/asm/machvec.h
index 2b850ccafef..de99cb2799c 100644
--- a/arch/ia64/include/asm/machvec.h
+++ b/arch/ia64/include/asm/machvec.h
@@ -128,6 +128,8 @@ extern void machvec_tlb_migrate_finish (struct mm_struct *);
 #  include <asm/machvec_sn2.h>
 # elif defined (CONFIG_IA64_SGI_UV)
 #  include <asm/machvec_uv.h>
+# elif defined (CONFIG_IA64_XEN_GUEST)
+#  include <asm/machvec_xen.h>
 # elif defined (CONFIG_IA64_GENERIC)
 
 # ifdef MACHVEC_PLATFORM_HEADER
diff --git a/arch/ia64/include/asm/machvec_xen.h b/arch/ia64/include/asm/machvec_xen.h
new file mode 100644
index 00000000000..55f9228056c
--- /dev/null
+++ b/arch/ia64/include/asm/machvec_xen.h
@@ -0,0 +1,22 @@
+#ifndef _ASM_IA64_MACHVEC_XEN_h
+#define _ASM_IA64_MACHVEC_XEN_h
+
+extern ia64_mv_setup_t			dig_setup;
+extern ia64_mv_cpu_init_t		xen_cpu_init;
+extern ia64_mv_irq_init_t		xen_irq_init;
+extern ia64_mv_send_ipi_t		xen_platform_send_ipi;
+
+/*
+ * This stuff has dual use!
+ *
+ * For a generic kernel, the macros are used to initialize the
+ * platform's machvec structure.  When compiling a non-generic kernel,
+ * the macros are used directly.
+ */
+#define platform_name				"xen"
+#define platform_setup				dig_setup
+#define platform_cpu_init			xen_cpu_init
+#define platform_irq_init			xen_irq_init
+#define platform_send_ipi			xen_platform_send_ipi
+
+#endif /* _ASM_IA64_MACHVEC_XEN_h */
diff --git a/arch/ia64/include/asm/meminit.h b/arch/ia64/include/asm/meminit.h
index 7245a578159..6bc96ee5432 100644
--- a/arch/ia64/include/asm/meminit.h
+++ b/arch/ia64/include/asm/meminit.h
@@ -18,10 +18,11 @@
  * 	- crash dumping code reserved region
  * 	- Kernel memory map built from EFI memory map
  * 	- ELF core header
+ *	- xen start info if CONFIG_XEN
  *
  * More could be added if necessary
  */
-#define IA64_MAX_RSVD_REGIONS 8
+#define IA64_MAX_RSVD_REGIONS 9
 
 struct rsvd_region {
 	unsigned long start;	/* virtual address of beginning of element */
diff --git a/arch/ia64/include/asm/native/inst.h b/arch/ia64/include/asm/native/inst.h
index c8efbf7b849..0a1026cca4f 100644
--- a/arch/ia64/include/asm/native/inst.h
+++ b/arch/ia64/include/asm/native/inst.h
@@ -36,8 +36,13 @@
 	;;					\
 	movl clob = PARAVIRT_POISON;		\
 	;;
+# define CLOBBER_PRED(pred_clob)		\
+	;;					\
+	cmp.eq pred_clob, p0 = r0, r0		\
+	;;
 #else
-# define CLOBBER(clob)		/* nothing */
+# define CLOBBER(clob)			/* nothing */
+# define CLOBBER_PRED(pred_clob)	/* nothing */
 #endif
 
 #define MOV_FROM_IFA(reg)	\
@@ -136,7 +141,8 @@
 
 #define SSM_PSR_I(pred, pred_clob, clob)	\
 (pred)	ssm psr.i				\
-	CLOBBER(clob)
+	CLOBBER(clob)				\
+	CLOBBER_PRED(pred_clob)
 
 #define RSM_PSR_I(pred, clob0, clob1)	\
 (pred)	rsm psr.i			\
diff --git a/arch/ia64/include/asm/native/pvchk_inst.h b/arch/ia64/include/asm/native/pvchk_inst.h
new file mode 100644
index 00000000000..b8e6eb1090d
--- /dev/null
+++ b/arch/ia64/include/asm/native/pvchk_inst.h
@@ -0,0 +1,263 @@
+#ifndef _ASM_NATIVE_PVCHK_INST_H
+#define _ASM_NATIVE_PVCHK_INST_H
+
+/******************************************************************************
+ * arch/ia64/include/asm/native/pvchk_inst.h
+ * Checker for paravirtualizations of privileged operations.
+ *
+ * Copyright (C) 2005 Hewlett-Packard Co
+ *      Dan Magenheimer <dan.magenheimer@hp.com>
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+/**********************************************
+ * Instructions paravirtualized for correctness
+ **********************************************/
+
+/* "fc" and "thash" are privilege-sensitive instructions, meaning they
+ *  may have different semantics depending on whether they are executed
+ *  at PL0 vs PL!=0.  When paravirtualized, these instructions mustn't
+ *  be allowed to execute directly, lest incorrect semantics result.
+ */
+
+#define fc	.error "fc should not be used directly."
+#define thash	.error "thash should not be used directly."
+
+/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
+ * is not currently used (though it may be in a long-format VHPT system!)
+ * and the semantics of cover only change if psr.ic is off which is very
+ * rare (and currently non-existent outside of assembly code
+ */
+#define ttag	.error "ttag should not be used directly."
+#define cover	.error "cover should not be used directly."
+
+/* There are also privilege-sensitive registers.  These registers are
+ * readable at any privilege level but only writable at PL0.
+ */
+#define cpuid	.error "cpuid should not be used directly."
+#define pmd	.error "pmd should not be used directly."
+
+/*
+ * mov ar.eflag =
+ * mov = ar.eflag
+ */
+
+/**********************************************
+ * Instructions paravirtualized for performance
+ **********************************************/
+/*
+ * Those instructions include '.' which can't be handled by cpp.
+ * or can't be handled by cpp easily.
+ * They are handled by sed instead of cpp.
+ */
+
+/* for .S
+ * itc.i
+ * itc.d
+ *
+ * bsw.0
+ * bsw.1
+ *
+ * ssm psr.ic | PSR_DEFAULT_BITS
+ * ssm psr.ic
+ * rsm psr.ic
+ * ssm psr.i
+ * rsm psr.i
+ * rsm psr.i | psr.ic
+ * rsm psr.dt
+ * ssm psr.dt
+ *
+ * mov = cr.ifa
+ * mov = cr.itir
+ * mov = cr.isr
+ * mov = cr.iha
+ * mov = cr.ipsr
+ * mov = cr.iim
+ * mov = cr.iip
+ * mov = cr.ivr
+ * mov = psr
+ *
+ * mov cr.ifa =
+ * mov cr.itir =
+ * mov cr.iha =
+ * mov cr.ipsr =
+ * mov cr.ifs =
+ * mov cr.iip =
+ * mov cr.kr =
+ */
+
+/* for intrinsics
+ * ssm psr.i
+ * rsm psr.i
+ * mov = psr
+ * mov = ivr
+ * mov = tpr
+ * mov cr.itm =
+ * mov eoi =
+ * mov rr[] =
+ * mov = rr[]
+ * mov = kr
+ * mov kr =
+ * ptc.ga
+ */
+
+/*************************************************************
+ * define paravirtualized instrcution macros as nop to ingore.
+ * and check whether arguments are appropriate.
+ *************************************************************/
+
+/* check whether reg is a regular register */
+.macro is_rreg_in reg
+	.ifc "\reg", "r0"
+		nop 0
+		.exitm
+	.endif
+	;;
+	mov \reg = r0
+	;;
+.endm
+#define IS_RREG_IN(reg)	is_rreg_in reg ;
+
+#define IS_RREG_OUT(reg)			\
+	;;					\
+	mov reg = r0				\
+	;;
+
+#define IS_RREG_CLOB(reg)	IS_RREG_OUT(reg)
+
+/* check whether pred is a predicate register */
+#define IS_PRED_IN(pred)			\
+	;;					\
+	(pred)	nop 0				\
+	;;
+
+#define IS_PRED_OUT(pred)			\
+	;;					\
+	cmp.eq pred, p0 = r0, r0		\
+	;;
+
+#define IS_PRED_CLOB(pred)	IS_PRED_OUT(pred)
+
+
+#define DO_SAVE_MIN(__COVER, SAVE_IFS, EXTRA, WORKAROUND)	\
+	nop 0
+#define MOV_FROM_IFA(reg)			\
+	IS_RREG_OUT(reg)
+#define MOV_FROM_ITIR(reg)			\
+	IS_RREG_OUT(reg)
+#define MOV_FROM_ISR(reg)			\
+	IS_RREG_OUT(reg)
+#define MOV_FROM_IHA(reg)			\
+	IS_RREG_OUT(reg)
+#define MOV_FROM_IPSR(pred, reg)		\
+	IS_PRED_IN(pred)			\
+	IS_RREG_OUT(reg)
+#define MOV_FROM_IIM(reg)			\
+	IS_RREG_OUT(reg)
+#define MOV_FROM_IIP(reg)			\
+	IS_RREG_OUT(reg)
+#define MOV_FROM_IVR(reg, clob)			\
+	IS_RREG_OUT(reg)			\
+	IS_RREG_CLOB(clob)
+#define MOV_FROM_PSR(pred, reg, clob)		\
+	IS_PRED_IN(pred)			\
+	IS_RREG_OUT(reg)			\
+	IS_RREG_CLOB(clob)
+#define MOV_TO_IFA(reg, clob)			\
+	IS_RREG_IN(reg)				\
+	IS_RREG_CLOB(clob)
+#define MOV_TO_ITIR(pred, reg, clob)		\
+	IS_PRED_IN(pred)			\
+	IS_RREG_IN(reg)				\
+	IS_RREG_CLOB(clob)
+#define MOV_TO_IHA(pred, reg, clob)		\
+	IS_PRED_IN(pred)			\
+	IS_RREG_IN(reg)				\
+	IS_RREG_CLOB(clob)
+#define MOV_TO_IPSR(pred, reg, clob)		\
+	IS_PRED_IN(pred)			\
+	IS_RREG_IN(reg)				\
+	IS_RREG_CLOB(clob)
+#define MOV_TO_IFS(pred, reg, clob)		\
+	IS_PRED_IN(pred)			\
+	IS_RREG_IN(reg)				\
+	IS_RREG_CLOB(clob)
+#define MOV_TO_IIP(reg, clob)			\
+	IS_RREG_IN(reg)				\
+	IS_RREG_CLOB(clob)
+#define MOV_TO_KR(kr, reg, clob0, clob1)	\
+	IS_RREG_IN(reg)				\
+	IS_RREG_CLOB(clob0)			\
+	IS_RREG_CLOB(clob1)
+#define ITC_I(pred, reg, clob)			\
+	IS_PRED_IN(pred)			\
+	IS_RREG_IN(reg)				\
+	IS_RREG_CLOB(clob)
+#define ITC_D(pred, reg, clob)			\
+	IS_PRED_IN(pred)			\
+	IS_RREG_IN(reg)				\
+	IS_RREG_CLOB(clob)
+#define ITC_I_AND_D(pred_i, pred_d, reg, clob)	\
+	IS_PRED_IN(pred_i)			\
+	IS_PRED_IN(pred_d)			\
+	IS_RREG_IN(reg)				\
+	IS_RREG_CLOB(clob)
+#define THASH(pred, reg0, reg1, clob)		\
+	IS_PRED_IN(pred)			\
+	IS_RREG_OUT(reg0)			\
+	IS_RREG_IN(reg1)			\
+	IS_RREG_CLOB(clob)
+#define SSM_PSR_IC_AND_DEFAULT_BITS_AND_SRLZ_I(clob0, clob1)	\
+	IS_RREG_CLOB(clob0)					\
+	IS_RREG_CLOB(clob1)
+#define SSM_PSR_IC_AND_SRLZ_D(clob0, clob1)	\
+	IS_RREG_CLOB(clob0)			\
+	IS_RREG_CLOB(clob1)
+#define RSM_PSR_IC(clob)			\
+	IS_RREG_CLOB(clob)
+#define SSM_PSR_I(pred, pred_clob, clob)	\
+	IS_PRED_IN(pred)			\
+	IS_PRED_CLOB(pred_clob)			\
+	IS_RREG_CLOB(clob)
+#define RSM_PSR_I(pred, clob0, clob1)		\
+	IS_PRED_IN(pred)			\
+	IS_RREG_CLOB(clob0)			\
+	IS_RREG_CLOB(clob1)
+#define RSM_PSR_I_IC(clob0, clob1, clob2)	\
+	IS_RREG_CLOB(clob0)			\
+	IS_RREG_CLOB(clob1)			\
+	IS_RREG_CLOB(clob2)
+#define RSM_PSR_DT				\
+	nop 0
+#define SSM_PSR_DT_AND_SRLZ_I			\
+	nop 0
+#define BSW_0(clob0, clob1, clob2)		\
+	IS_RREG_CLOB(clob0)			\
+	IS_RREG_CLOB(clob1)			\
+	IS_RREG_CLOB(clob2)
+#define BSW_1(clob0, clob1)			\
+	IS_RREG_CLOB(clob0)			\
+	IS_RREG_CLOB(clob1)
+#define COVER					\
+	nop 0
+#define RFI					\
+	br.ret.sptk.many rp /* defining nop causes dependency error */
+
+#endif /* _ASM_NATIVE_PVCHK_INST_H */
diff --git a/arch/ia64/include/asm/paravirt.h b/arch/ia64/include/asm/paravirt.h
index 660cab04483..2bf3636473f 100644
--- a/arch/ia64/include/asm/paravirt.h
+++ b/arch/ia64/include/asm/paravirt.h
@@ -117,7 +117,7 @@ static inline void paravirt_post_smp_prepare_boot_cpu(void)
 struct pv_iosapic_ops {
 	void (*pcat_compat_init)(void);
 
-	struct irq_chip *(*get_irq_chip)(unsigned long trigger);
+	struct irq_chip *(*__get_irq_chip)(unsigned long trigger);
 
 	unsigned int (*__read)(char __iomem *iosapic, unsigned int reg);
 	void (*__write)(char __iomem *iosapic, unsigned int reg, u32 val);
@@ -135,7 +135,7 @@ iosapic_pcat_compat_init(void)
 static inline struct irq_chip*
 iosapic_get_irq_chip(unsigned long trigger)
 {
-	return pv_iosapic_ops.get_irq_chip(trigger);
+	return pv_iosapic_ops.__get_irq_chip(trigger);
 }
 
 static inline unsigned int
diff --git a/arch/ia64/include/asm/pvclock-abi.h b/arch/ia64/include/asm/pvclock-abi.h
new file mode 100644
index 00000000000..44ef9ef8f5b
--- /dev/null
+++ b/arch/ia64/include/asm/pvclock-abi.h
@@ -0,0 +1,48 @@
+/*
+ * same structure to x86's
+ * Hopefully asm-x86/pvclock-abi.h would be moved to somewhere more generic.
+ * For now, define same duplicated definitions.
+ */
+
+#ifndef _ASM_IA64__PVCLOCK_ABI_H
+#define _ASM_IA64__PVCLOCK_ABI_H
+#ifndef __ASSEMBLY__
+
+/*
+ * These structs MUST NOT be changed.
+ * They are the ABI between hypervisor and guest OS.
+ * Both Xen and KVM are using this.
+ *
+ * pvclock_vcpu_time_info holds the system time and the tsc timestamp
+ * of the last update. So the guest can use the tsc delta to get a
+ * more precise system time.  There is one per virtual cpu.
+ *
+ * pvclock_wall_clock references the point in time when the system
+ * time was zero (usually boot time), thus the guest calculates the
+ * current wall clock by adding the system time.
+ *
+ * Protocol for the "version" fields is: hypervisor raises it (making
+ * it uneven) before it starts updating the fields and raises it again
+ * (making it even) when it is done.  Thus the guest can make sure the
+ * time values it got are consistent by checking the version before
+ * and after reading them.
+ */
+
+struct pvclock_vcpu_time_info {
+	u32   version;
+	u32   pad0;
+	u64   tsc_timestamp;
+	u64   system_time;
+	u32   tsc_to_system_mul;
+	s8    tsc_shift;
+	u8    pad[3];
+} __attribute__((__packed__)); /* 32 bytes */
+
+struct pvclock_wall_clock {
+	u32   version;
+	u32   sec;
+	u32   nsec;
+} __attribute__((__packed__));
+
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_IA64__PVCLOCK_ABI_H */