Am 08.06.2011 16:10, schrieb Jan Kiszka:
This helps reducing our build-time checks for feature support in the
available Linux kernel headers. And it helps users that do not have
sufficiently recent headers installed on their build machine.
Consequently, the patch removes and build-time checks for kvm and vhost
in configure, the --kerneldir switch, and KVM_CFLAGS. Kernel headers are
supposed to be provided by QEMU only.
s390 needs some extra love as it carries redefinitions from kernel
headers.
CC: Alexander Graf <agraf@xxxxxxx>
Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
---
Makefile.target | 4 +-
configure | 151 ++++++----------------------------------------
target-s390x/cpu.h | 10 ---
target-s390x/op_helper.c | 1 +
4 files changed, 21 insertions(+), 145 deletions(-)
diff --git a/Makefile.target b/Makefile.target
index 5c22df8..be9c0e8 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -14,7 +14,7 @@ endif
TARGET_PATH=$(SRC_PATH)/target-$(TARGET_BASE_ARCH)
$(call set-vpath, $(SRC_PATH):$(TARGET_PATH):$(SRC_PATH)/hw)
-QEMU_CFLAGS+= -I.. -I$(TARGET_PATH) -DNEED_CPU_H
+QEMU_CFLAGS+= -I.. -I../linux-headers -I$(TARGET_PATH) -DNEED_CPU_H
include $(SRC_PATH)/Makefile.objs
@@ -37,8 +37,6 @@ ifndef CONFIG_HAIKU
LIBS+=-lm
endif
-kvm.o kvm-all.o vhost.o vhost_net.o kvmclock.o:
QEMU_CFLAGS+=$(KVM_CFLAGS)
-
config-target.h: config-target.h-timestamp
config-target.h-timestamp: config-target.mak
diff --git a/configure b/configure
index d38b952..0e1dc46 100755
--- a/configure
+++ b/configure
@@ -113,8 +113,7 @@ curl=""
curses=""
docs=""
fdt=""
-kvm=""
-kvm_para=""
+kvm="yes"
nptl=""
Are you planning to add kvm support for all platforms which don't
support it today?
If not, kvm="yes" should be restricted to platforms with kvm support.
Otherwise, QEMU builds will fail very early:
ERROR: Host kernel lacks signalfd() support,
but KVM depends on it when the IO thread is disabled.
Of course, users of those non-kvm platforms can set --disable-kvm,
but I don't think that is the correct solution.
Even with kvm disabled, builds still fail for non-kvm systems:
In file included from /qemu/hw/kvmclock.c:21:
/qemu/linux-headers/linux/kvm_para.h:26:26: warning: asm/kvm_para.h:
No such file or directory
Cheers,
Stefan
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