mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 10:11:27 +01:00
Keir Fraser
dd11df9b81
Reduce size of Xen-qemu shared ioreq structure to 32 bytes. This
has two advantages:
1. We can support up to 128 VCPUs with a single shared page
2. If/when we want to go beyond 128 VCPUs, a whole number of ioreq_t
structures will pack into a single shared page, so a multi-page
array will have no ioreq_t straddling a page boundary
Also, while modifying qemu, replace a 32-entry vcpu-indexed array
with a dynamically-allocated array.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
172 lines
6.2 KiB
Makefile
172 lines
6.2 KiB
Makefile
# -*- mode: Makefile; -*-
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# A debug build of Xen and tools?
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debug ?= y
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XEN_COMPILE_ARCH ?= $(shell uname -m | sed -e s/i.86/x86_32/ \
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-e s/i86pc/x86_32/ -e s/amd64/x86_64/)
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XEN_TARGET_ARCH ?= $(XEN_COMPILE_ARCH)
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XEN_OS ?= $(shell uname -s)
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CONFIG_$(XEN_OS) := y
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SHELL ?= /bin/sh
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# Tools to run on system hosting the build
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HOSTCC = gcc
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HOSTCFLAGS = -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer
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HOSTCFLAGS += -fno-strict-aliasing
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DISTDIR ?= $(XEN_ROOT)/dist
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DESTDIR ?= /
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# Allow phony attribute to be listed as dependency rather than fake target
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.PHONY: .phony
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include $(XEN_ROOT)/config/$(XEN_OS).mk
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include $(XEN_ROOT)/config/$(XEN_TARGET_ARCH).mk
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SHAREDIR ?= $(PREFIX)/share
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DOCDIR ?= $(SHAREDIR)/doc/xen
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MANDIR ?= $(SHAREDIR)/man
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ifneq ($(EXTRA_PREFIX),)
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EXTRA_INCLUDES += $(EXTRA_PREFIX)/include
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EXTRA_LIB += $(EXTRA_PREFIX)/$(LIBLEAFDIR)
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endif
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PYTHON ?= python
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PYTHON_PREFIX_ARG ?= --prefix="$(PREFIX)"
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# The above requires that PREFIX contains *no spaces*. This variable is here
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# to permit the user to set PYTHON_PREFIX_ARG to '' to workaround this bug:
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# https://bugs.launchpad.net/ubuntu/+bug/362570
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# cc-option: Check if compiler supports first option, else fall back to second.
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# Usage: cflags-y += $(call cc-option,$(CC),-march=winchip-c6,-march=i586)
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cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \
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/dev/null 2>&1`"; then echo "$(2)"; else echo "$(3)"; fi ;)
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# cc-option-add: Add an option to compilation flags, but only if supported.
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# Usage: $(call cc-option-add CFLAGS,CC,-march=winchip-c6)
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cc-option-add = $(eval $(call cc-option-add-closure,$(1),$(2),$(3)))
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define cc-option-add-closure
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ifneq ($$(call cc-option,$$($(2)),$(3),n),n)
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$(1) += $(3)
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endif
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endef
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# cc-ver: Check compiler is at least specified version. Return boolean 'y'/'n'.
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# Usage: ifeq ($(call cc-ver,$(CC),0x030400),y)
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cc-ver = $(shell if [ $$((`$(1) -dumpversion | awk -F. \
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'{ printf "0x%02x%02x%02x", $$1, $$2, $$3}'`)) -ge $$(($(2))) ]; \
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then echo y; else echo n; fi ;)
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# cc-ver-check: Check compiler is at least specified version, else fail.
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# Usage: $(call cc-ver-check,CC,0x030400,"Require at least gcc-3.4")
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cc-ver-check = $(eval $(call cc-ver-check-closure,$(1),$(2),$(3)))
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define cc-ver-check-closure
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ifeq ($$(call cc-ver,$$($(1)),$(2)),n)
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override $(1) = echo "*** FATAL BUILD ERROR: "$(3) >&2; exit 1;
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cc-option := n
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endif
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endef
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define absolutify_xen_root
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case "$(XEN_ROOT)" in \
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/*) XEN_ROOT=$(XEN_ROOT) ;; \
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*) xen_root_lhs=`pwd`; \
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xen_root_rhs=$(XEN_ROOT)/; \
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while [ "x$${xen_root_rhs#../}" != "x$$xen_root_rhs" ]; do \
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xen_root_rhs="$${xen_root_rhs#../}"; \
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xen_root_rhs="$${xen_root_rhs#/}"; \
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xen_root_rhs="$${xen_root_rhs#/}"; \
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xen_root_lhs="$${xen_root_lhs%/*}"; \
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done; \
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XEN_ROOT="$$xen_root_lhs/$$xen_root_rhs" ;; \
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esac; \
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export XEN_ROOT
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endef
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define buildmakevars2shellvars
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PREFIX="$(PREFIX)"; \
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XEN_SCRIPT_DIR="$(XEN_SCRIPT_DIR)"; \
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export PREFIX; \
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export XEN_SCRIPT_DIR
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endef
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buildmakevars2file = $(eval $(call buildmakevars2file-closure,$(1)))
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define buildmakevars2file-closure
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.PHONY: genpath
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genpath:
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rm -f $(1); \
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echo "SBINDIR=\"$(SBINDIR)\"" >> $(1); \
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echo "BINDIR=\"$(BINDIR)\"" >> $(1); \
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echo "LIBEXEC=\"$(LIBEXEC)\"" >> $(1); \
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echo "LIBDIR=\"$(LIBDIR)\"" >> $(1); \
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echo "SHAREDIR=\"$(SHAREDIR)\"" >> $(1); \
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echo "PRIVATE_BINDIR=\"$(PRIVATE_BINDIR)\"" >> $(1); \
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echo "XENFIRMWAREDIR=\"$(XENFIRMWAREDIR)\"" >> $(1); \
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echo "XEN_CONFIG_DIR=\"$(XEN_CONFIG_DIR)\"" >> $(1); \
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echo "XEN_SCRIPT_DIR=\"$(XEN_SCRIPT_DIR)\"" >> $(1)
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endef
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ifeq ($(debug),y)
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CFLAGS += -g
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endif
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CFLAGS += -fno-strict-aliasing
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CFLAGS += -std=gnu99
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CFLAGS += -Wall -Wstrict-prototypes
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# -Wunused-value makes GCC 4.x too aggressive for my taste: ignoring the
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# result of any casted expression causes a warning.
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CFLAGS += -Wno-unused-value
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$(call cc-option-add,HOSTCFLAGS,HOSTCC,-Wdeclaration-after-statement)
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$(call cc-option-add,CFLAGS,CC,-Wdeclaration-after-statement)
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LDFLAGS += $(foreach i, $(EXTRA_LIB), -L$(i))
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CFLAGS += $(foreach i, $(EXTRA_INCLUDES), -I$(i))
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# Enable XSM security module. Enabling XSM requires selection of an
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# XSM security module (FLASK_ENABLE or ACM_SECURITY).
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XSM_ENABLE ?= n
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FLASK_ENABLE ?= n
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ACM_SECURITY ?= n
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XEN_EXTFILES_URL=http://xenbits.xensource.com/xen-extfiles
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# All the files at that location were downloaded from elsewhere on
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# the internet. The original download URL is preserved as a comment
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# near the place in the Xen Makefiles where the file is used.
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# GIT protocol can be faster than HTTP, if your firewall lets it through.
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# QEMU_REMOTE=git://xenbits.xensource.com/qemu-xen-unstable.git
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QEMU_REMOTE=http://xenbits.xensource.com/git-http/qemu-xen-unstable.git
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# Specify which qemu-dm to use. This may be `ioemu' to use the old
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# Mercurial in-tree version, or a local directory, or a git URL.
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# CONFIG_QEMU ?= ../qemu-xen.git
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CONFIG_QEMU ?= $(QEMU_REMOTE)
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QEMU_TAG ?= 3140780e451d3919ef2c81f91ae0ebe3f286eb06
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# Thu Oct 29 13:00:31 2009 +0000
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# Extend max vcpu number for HVM guest
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OCAML_XENSTORED_REPO=http://xenbits.xensource.com/ext/xen-ocaml-tools.hg
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# Build OCAML version of xenstored instead of the in-tree C version?
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# This will cause $(OCAML_XENSTORED_REPO) to be cloned.
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CONFIG_OCAML_XENSTORED ?= n
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# Optional components
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XENSTAT_XENTOP ?= y
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VTPM_TOOLS ?= n
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LIBXENAPI_BINDINGS ?= n
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PYTHON_TOOLS ?= y
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CONFIG_MINITERM ?= n
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CONFIG_LOMOUNT ?= n
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-include $(XEN_ROOT)/.config
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