KVM: ia64: Enable kvm build for ia64

Update the related Makefile and KConfig for kvm build

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

4 files changed, 111 insertions, 0 deletions

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index cd13e138bd03..3aa6c821449a 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -19,6 +19,7 @@ config IA64
         select HAVE_OPROFILE
         select HAVE_KPROBES
         select HAVE_KRETPROBES
+        select HAVE_KVM
         default y
         help
           The Itanium Processor Family is Intel's 64-bit successor to
@@ -589,6 +590,8 @@ config MSPEC
 
 source "fs/Kconfig"
 
+source "arch/ia64/kvm/Kconfig"
+
 source "lib/Kconfig"
 
 #
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index f1645c4f7039..ec4cca477f49 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -57,6 +57,7 @@ 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_SGI_SN2)     += arch/ia64/sn/
+core-$(CONFIG_KVM)              += arch/ia64/kvm/
 
 drivers-$(CONFIG_PCI)           += arch/ia64/pci/
 drivers-$(CONFIG_IA64_HP_SIM)   += arch/ia64/hp/sim/
diff --git a/arch/ia64/kvm/Kconfig b/arch/ia64/kvm/Kconfig
new file mode 100644
index 000000000000..d2e54b9321fb
--- /dev/null
+++ b/arch/ia64/kvm/Kconfig
@@ -0,0 +1,46 @@
+#
+# KVM configuration
+#
+config HAVE_KVM
+        bool
+
+menuconfig VIRTUALIZATION
+        bool "Virtualization"
+        depends on HAVE_KVM || IA64
+        default y
+        ---help---
+          Say Y here to get to see options for using your Linux host to run other
+          operating systems inside virtual machines (guests).
+          This option alone does not add any kernel code.
+
+          If you say N, all options in this submenu will be skipped and disabled.
+
+if VIRTUALIZATION
+
+config KVM
+        tristate "Kernel-based Virtual Machine (KVM) support"
+        depends on HAVE_KVM && EXPERIMENTAL
+        select PREEMPT_NOTIFIERS
+        select ANON_INODES
+        ---help---
+          Support hosting fully virtualized guest machines using hardware
+          virtualization extensions.  You will need a fairly recent
+          processor equipped with virtualization extensions. You will also
+          need to select one or more of the processor modules below.
+
+          This module provides access to the hardware capabilities through
+          a character device node named /dev/kvm.
+
+          To compile this as a module, choose M here: the module
+          will be called kvm.
+
+          If unsure, say N.
+
+config KVM_INTEL
+        tristate "KVM for Intel Itanium 2 processors support"
+        depends on KVM && m
+        ---help---
+          Provides support for KVM on Itanium 2 processors equipped with the VT
+          extensions.
+
+endif # VIRTUALIZATION
diff --git a/arch/ia64/kvm/Makefile b/arch/ia64/kvm/Makefile
new file mode 100644
index 000000000000..41b034ffa73b
--- /dev/null
+++ b/arch/ia64/kvm/Makefile
@@ -0,0 +1,61 @@
+#This Make file is to generate asm-offsets.h and build source.
+#
+
+#Generate asm-offsets.h for vmm module build
+offsets-file := asm-offsets.h
+
+always  := $(offsets-file)
+targets := $(offsets-file)
+targets += arch/ia64/kvm/asm-offsets.s
+clean-files := $(addprefix $(objtree)/,$(targets) $(obj)/memcpy.S $(obj)/memset.S)
+
+# Default sed regexp - multiline due to syntax constraints
+define sed-y
+        "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"
+endef
+
+quiet_cmd_offsets = GEN     $@
+define cmd_offsets
+        (set -e; \
+         echo "#ifndef __ASM_KVM_OFFSETS_H__"; \
+         echo "#define __ASM_KVM_OFFSETS_H__"; \
+         echo "/*"; \
+         echo " * DO NOT MODIFY."; \
+         echo " *"; \
+         echo " * This file was generated by Makefile"; \
+         echo " *"; \
+         echo " */"; \
+         echo ""; \
+         sed -ne $(sed-y) $<; \
+         echo ""; \
+         echo "#endif" ) > $@
+endef
+# We use internal rules to avoid the "is up to date" message from make
+arch/ia64/kvm/asm-offsets.s: arch/ia64/kvm/asm-offsets.c
+        $(call if_changed_dep,cc_s_c)
+
+$(obj)/$(offsets-file): arch/ia64/kvm/asm-offsets.s
+        $(call cmd,offsets)
+
+#
+# Makefile for Kernel-based Virtual Machine module
+#
+
+EXTRA_CFLAGS += -Ivirt/kvm -Iarch/ia64/kvm/
+
+$(addprefix $(objtree)/,$(obj)/memcpy.S $(obj)/memset.S):
+        $(shell ln -snf ../lib/memcpy.S $(src)/memcpy.S)
+        $(shell ln -snf ../lib/memset.S $(src)/memset.S)
+
+common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o)
+
+kvm-objs := $(common-objs) kvm-ia64.o kvm_fw.o
+obj-$(CONFIG_KVM) += kvm.o
+
+FORCE : $(obj)/$(offsets-file)
+EXTRA_CFLAGS_vcpu.o += -mfixed-range=f2-f5,f12-f127
+kvm-intel-objs = vmm.o vmm_ivt.o trampoline.o vcpu.o optvfault.o mmio.o \
+        vtlb.o process.o
+#Add link memcpy and memset to avoid possible structure assignment error
+kvm-intel-objs += memset.o memcpy.o
+obj-$(CONFIG_KVM_INTEL) += kvm-intel.o