Re: [PATCH 03/12] Switch build system to accompanied kernel headers
On 2011-06-23 07:37, Stefan Weil wrote: Am 22.06.2011 23:37, schrieb Jan Kiszka: On 2011-06-22 22:51, Stefan Weil wrote: 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 That indicates symlink emulation under Windows does not support directories. Can you confirm this (check what builddir/linux-headers/asm became)? Then we would have to link all files in the arch header dir individually. Jan Even when cross compiling for w32 (on a linux host), kvmclock.c does not compile: $ LANG=C make CFLAGS=-g CCi386-softmmu/kvmclock.o In file included from /home/stefan/src/qemu/savannah/qemu/hw/kvmclock.c:20: /home/stefan/src/qemu/savannah/qemu/linux-headers/linux/kvm.h:10:25: warning: linux/types.h: No such file or directory /home/stefan/src/qemu/savannah/qemu/linux-headers/linux/kvm.h:12:25: warning: linux/ioctl.h: No such file or directory In file included from /home/stefan/src/qemu/savannah/qemu/linux-headers/linux/kvm.h:13, from /home/stefan/src/qemu/savannah/qemu/hw/kvmclock.c:20: ../linux-headers/asm/kvm.h:32: error: expected specifier-qualifier-list before '__u32' ../linux-headers/asm/kvm.h:41: error: expected specifier-qualifier-list before '__u8' ../linux-headers/asm/kvm.h:61: error: expected specifier-qualifier-list before '__u64' Is kvmclock.c really needed for non-kvm platforms? Or does it simply need a obj-i386-$(CONFIG_KVM) in Makefile.target? It's not needed, specifically as we do not (yet) emulate the pv interfaces of KVM. But changing the makefile won't suffice, we also need to stub out kvmclock_create. Right now I'm fighting to get a mingw build that far at all. The version I have here (gcc 4.6 based) does not include liberity (but apparently links fine without as well). Then there are tons of other errors and warnings. Do you have some tree with recent fixes? I would suggest you to set up a buildbot for the Windows platform. That should help to get notifications about breakages a bit earlier. And that may help to keep their number down (this broken window thing: once the first few got damaged, no one will bother about smashing another one. Jan signature.asc Description: OpenPGP digital signature
Re: [Qemu-devel] [PATCH 03/12] Switch build system to accompanied kernel headers
Am 08.06.2011 16:10, schrieb Jan Kiszka: This helps reducing our build-time checks for feature support in the available Linux kernel headers. And it helps users that do not have sufficiently recent headers installed on their build machine. Consequently, the patch removes and build-time checks for kvm and vhost in configure, the --kerneldir switch, and KVM_CFLAGS. Kernel headers are supposed to be provided by QEMU only. s390 needs some extra love as it carries redefinitions from kernel headers. CC: Alexander Graf ag...@suse.de Signed-off-by: Jan Kiszka jan.kis...@siemens.com --- Makefile.target | 4 +- configure | 151 ++ target-s390x/cpu.h | 10 --- target-s390x/op_helper.c | 1 + 4 files changed, 21 insertions(+), 145 deletions(-) diff --git a/Makefile.target b/Makefile.target index 5c22df8..be9c0e8 100644 --- a/Makefile.target +++ b/Makefile.target @@ -14,7 +14,7 @@ endif TARGET_PATH=$(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 -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 03/12] Switch build system to accompanied kernel headers
On 2011-06-22 22:51, Stefan Weil wrote: 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 ag...@suse.de Signed-off-by: Jan Kiszka jan.kis...@siemens.com --- 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? That would mean replacing all their kernels with Linux. Will take a bit longer. I simply overshot with my cleanups: diff --git a/configure b/configure index 3286e33..e6847c4 100755 --- a/configure +++ b/configure @@ -113,7 +113,7 @@ curl= curses= docs= fdt= -kvm=yes +kvm= nptl= sdl= vnc=yes @@ -129,7 +129,7 @@ xen= xen_ctrl_version= linux_aio= attr= -vhost_net=yes +vhost_net= xfs= gprof=no @@ -457,6 +457,8 @@ Haiku) linux=yes linux_user=yes usb=linux + kvm=yes + vhost_net=yes if [ $cpu = i386 -o $cpu = x86_64 ] ; then audio_possible_drivers=$audio_possible_drivers fmod fi Will post this as a patch tomorrow. 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 That indicates symlink emulation under Windows does not support directories. Can you confirm this (check what builddir/linux-headers/asm became)? Then we would have to link all files in the arch header dir individually. Jan signature.asc Description: OpenPGP digital signature
Re: [PATCH 03/12] Switch build system to accompanied kernel headers
Am 22.06.2011 23:37, schrieb Jan Kiszka: On 2011-06-22 22:51, Stefan Weil wrote: 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 That indicates symlink emulation under Windows does not support directories. Can you confirm this (check what builddir/linux-headers/asm became)? Then we would have to link all files in the arch header dir individually. Jan Even when cross compiling for w32 (on a linux host), kvmclock.c does not compile: $ LANG=C make CFLAGS=-g CCi386-softmmu/kvmclock.o In file included from /home/stefan/src/qemu/savannah/qemu/hw/kvmclock.c:20: /home/stefan/src/qemu/savannah/qemu/linux-headers/linux/kvm.h:10:25: warning: linux/types.h: No such file or directory /home/stefan/src/qemu/savannah/qemu/linux-headers/linux/kvm.h:12:25: warning: linux/ioctl.h: No such file or directory In file included from /home/stefan/src/qemu/savannah/qemu/linux-headers/linux/kvm.h:13, from /home/stefan/src/qemu/savannah/qemu/hw/kvmclock.c:20: ../linux-headers/asm/kvm.h:32: error: expected specifier-qualifier-list before '__u32' ../linux-headers/asm/kvm.h:41: error: expected specifier-qualifier-list before '__u8' ../linux-headers/asm/kvm.h:61: error: expected specifier-qualifier-list before '__u64' Is kvmclock.c really needed for non-kvm platforms? Or does it simply need a obj-i386-$(CONFIG_KVM) in Makefile.target? Stefan -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 03/12] Switch build system to accompanied kernel headers
On 2011-06-14 13:11, Alexander Graf wrote: On 08.06.2011, at 16:10, Jan Kiszka wrote: 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. Yes. I was wondering if we should unconditionally include the kernel headers there. The problem I'm seeing there is that I don't know if that would work fine on non-Linux hosts, as that code definitely gets compiled there, while KVM code is not. [...] diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 4e5c391..b5e587f 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -313,16 +313,6 @@ CPUState *s390_cpu_addr2state(uint16_t cpu_addr); /* from s390-virtio-bus */ extern const target_phys_addr_t virtio_size; -#ifndef KVM_S390_SIGP_STOP -#define KVM_S390_SIGP_STOP 0 -#define KVM_S390_PROGRAM_INT0 -#define KVM_S390_SIGP_SET_PREFIX0 -#define KVM_S390_RESTART0 -#define KVM_S390_INT_VIRTIO 0 -#define KVM_S390_INT_SERVICE0 -#define KVM_S390_INT_EMERGENCY 0 -#endif - #endif void cpu_lock(void); void cpu_unlock(void); diff --git a/target-s390x/op_helper.c b/target-s390x/op_helper.c index db03a79..9429698 100644 --- a/target-s390x/op_helper.c +++ b/target-s390x/op_helper.c @@ -23,6 +23,7 @@ #include helpers.h #include string.h #include kvm.h +#include linux/kvm.h Have you tried to compile this on non-Linux? Sorry, I don't have non-Linux around. :) Do you expect build problems with that header? Why? BTW, if you depend on KVM_* constants for non-KVM builds, that looks a bit fishy to me. Why is that code built at all in that setup? Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 03/12] Switch build system to accompanied kernel headers
On 14.06.2011, at 13:21, Jan Kiszka wrote:
On 2011-06-14 13:11, Alexander Graf wrote:
On 08.06.2011, at 16:10, Jan Kiszka wrote:
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.
Yes. I was wondering if we should unconditionally include the kernel headers
there. The problem I'm seeing there is that I don't know if that would work
fine on non-Linux hosts, as that code definitely gets compiled there, while
KVM code is not.
[...]
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 4e5c391..b5e587f 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -313,16 +313,6 @@ CPUState *s390_cpu_addr2state(uint16_t cpu_addr);
/* from s390-virtio-bus */
extern const target_phys_addr_t virtio_size;
-#ifndef KVM_S390_SIGP_STOP
-#define KVM_S390_SIGP_STOP 0
-#define KVM_S390_PROGRAM_INT0
-#define KVM_S390_SIGP_SET_PREFIX0
-#define KVM_S390_RESTART0
-#define KVM_S390_INT_VIRTIO 0
-#define KVM_S390_INT_SERVICE0
-#define KVM_S390_INT_EMERGENCY 0
-#endif
-
#endif
void cpu_lock(void);
void cpu_unlock(void);
diff --git a/target-s390x/op_helper.c b/target-s390x/op_helper.c
index db03a79..9429698 100644
--- a/target-s390x/op_helper.c
+++ b/target-s390x/op_helper.c
@@ -23,6 +23,7 @@
#include helpers.h
#include string.h
#include kvm.h
+#include linux/kvm.h
Have you tried to compile this on non-Linux?
Sorry, I don't have non-Linux around. :) Do you expect build problems
with that header? Why?
Do you have a git tree handy? I can give a Mac build a try then.
BTW, if you depend on KVM_* constants for non-KVM builds, that looks a
bit fishy to me. Why is that code built at all in that setup?
The reason for that is that I didn't want to clutter the emulation code with
#ifdefs:
static void program_interrupt(CPUState *env, uint32_t code, int ilc)
{
qemu_log(program interrupt at %# PRIx64 \n, env-psw.addr);
if (kvm_enabled()) {
kvm_s390_interrupt(env, KVM_S390_PROGRAM_INT, code);
} else {
env-int_pgm_code = code;
env-int_pgm_ilc = ilc;
env-exception_index = EXCP_PGM;
cpu_loop_exit();
}
}
This breaks compilation when KVM_S390_PROGRAM_INT is not defined. I'm very open
to suggestions on how to improve this though :).
Alex
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Re: [PATCH 03/12] Switch build system to accompanied kernel headers
On 2011-06-14 13:28, Alexander Graf wrote:
On 14.06.2011, at 13:21, Jan Kiszka wrote:
On 2011-06-14 13:11, Alexander Graf wrote:
On 08.06.2011, at 16:10, Jan Kiszka wrote:
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.
Yes. I was wondering if we should unconditionally include the kernel
headers there. The problem I'm seeing there is that I don't know if that
would work fine on non-Linux hosts, as that code definitely gets compiled
there, while KVM code is not.
[...]
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 4e5c391..b5e587f 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -313,16 +313,6 @@ CPUState *s390_cpu_addr2state(uint16_t cpu_addr);
/* from s390-virtio-bus */
extern const target_phys_addr_t virtio_size;
-#ifndef KVM_S390_SIGP_STOP
-#define KVM_S390_SIGP_STOP 0
-#define KVM_S390_PROGRAM_INT0
-#define KVM_S390_SIGP_SET_PREFIX0
-#define KVM_S390_RESTART0
-#define KVM_S390_INT_VIRTIO 0
-#define KVM_S390_INT_SERVICE0
-#define KVM_S390_INT_EMERGENCY 0
-#endif
-
#endif
void cpu_lock(void);
void cpu_unlock(void);
diff --git a/target-s390x/op_helper.c b/target-s390x/op_helper.c
index db03a79..9429698 100644
--- a/target-s390x/op_helper.c
+++ b/target-s390x/op_helper.c
@@ -23,6 +23,7 @@
#include helpers.h
#include string.h
#include kvm.h
+#include linux/kvm.h
Have you tried to compile this on non-Linux?
Sorry, I don't have non-Linux around. :) Do you expect build problems
with that header? Why?
Do you have a git tree handy? I can give a Mac build a try then.
Try git://git.kiszka.org/qemu-kvm.git queues/kvm-upstream
BTW, if you depend on KVM_* constants for non-KVM builds, that looks a
bit fishy to me. Why is that code built at all in that setup?
The reason for that is that I didn't want to clutter the emulation code with
#ifdefs:
static void program_interrupt(CPUState *env, uint32_t code, int ilc)
{
qemu_log(program interrupt at %# PRIx64 \n, env-psw.addr);
if (kvm_enabled()) {
kvm_s390_interrupt(env, KVM_S390_PROGRAM_INT, code);
} else {
env-int_pgm_code = code;
env-int_pgm_ilc = ilc;
env-exception_index = EXCP_PGM;
cpu_loop_exit();
}
}
This breaks compilation when KVM_S390_PROGRAM_INT is not defined. I'm very
open to suggestions on how to improve this though :).
Callbacks? See cpu_interrupt_handler e.g.
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
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[PATCH 03/12] Switch build system to accompanied kernel headers
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 ag...@suse.de
Signed-off-by: Jan Kiszka jan.kis...@siemens.com
---
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=
sdl=
vnc=yes
@@ -130,7 +129,7 @@ xen=
xen_ctrl_version=
linux_aio=
attr=
-vhost_net=
+vhost_net=yes
xfs=
gprof=no
@@ -165,7 +164,6 @@ guest_base=
uname_release=
io_thread=no
mixemu=no
-kerneldir=
aix=no
blobs=yes
pkgversion=
@@ -712,8 +710,6 @@ for opt do
;;
--disable-blobs) blobs=no
;;
- --kerneldir=*) kerneldir=$optarg
- ;;
--with-pkgversion=*) pkgversion= ($optarg)
;;
--disable-docs) docs=no
@@ -1001,7 +997,6 @@ echo --disable-attr disables attr and xattr
support
echo --enable-attrenable attr and xattr support
echo --enable-io-thread enable IO thread
echo --disable-blobs disable installing provided firmware blobs
-echo --kerneldir=PATH look for kernel includes in PATH
echo --enable-docsenable documentation build
echo --disable-docs disable documentation build
echo --disable-vhost-net disable vhost-net acceleration support
@@ -1766,124 +1761,6 @@ EOF
fi
##
-# kvm probe
-if test $kvm != no ; then
-cat $TMPC EOF
-#include linux/kvm.h
-#if !defined(KVM_API_VERSION) || KVM_API_VERSION 12 || KVM_API_VERSION 12
-#error Invalid KVM version
-#endif
-EOF
-must_have_caps=KVM_CAP_USER_MEMORY \
-KVM_CAP_DESTROY_MEMORY_REGION_WORKS \
-KVM_CAP_COALESCED_MMIO \
-KVM_CAP_SYNC_MMU \
-
-if test \( $cpu = i386 -o $cpu = x86_64 \) ; then
- must_have_caps=$caps \
- KVM_CAP_SET_TSS_ADDR \
- KVM_CAP_EXT_CPUID \
- KVM_CAP_CLOCKSOURCE \
- KVM_CAP_NOP_IO_DELAY \
- KVM_CAP_PV_MMU \
- KVM_CAP_MP_STATE \
- KVM_CAP_USER_NMI \
-
-fi
-for c in $must_have_caps ; do
- cat $TMPC EOF
-#if !defined($c)
-#error Missing KVM capability $c
-#endif
-EOF
-done
-cat $TMPC EOF
-int main(void) { return 0; }
-EOF
- if test $kerneldir != ; then
- kvm_cflags=-I$kerneldir/include
- if test \( $cpu = i386 -o $cpu = x86_64 \) \
- -a -d $kerneldir/arch/x86/include ; then
-kvm_cflags=$kvm_cflags -I$kerneldir/arch/x86/include
- elif test $cpu = ppc -a -d $kerneldir/arch/powerpc/include ; then
- kvm_cflags=$kvm_cflags -I$kerneldir/arch/powerpc/include
- elif test $cpu = s390x -a -d $kerneldir/arch/s390/include ; then
- kvm_cflags=$kvm_cflags -I$kerneldir/arch/s390/include
-elif test -d $kerneldir/arch/$cpu/include ; then
-kvm_cflags=$kvm_cflags -I$kerneldir/arch/$cpu/include
- fi
- else
-kvm_cflags=`$pkg_config --cflags kvm-kmod 2/dev/null`
- fi
- if compile_prog $kvm_cflags ; then
-kvm=yes
-cat $TMPC EOF
-#include linux/kvm_para.h
-int main(void) { return 0; }
-EOF
-if compile_prog $kvm_cflags ; then
- kvm_para=yes
-fi
- else
-if test $kvm = yes ; then
- if has awk has grep; then
-kvmerr=`LANG=C $cc $QEMU_CFLAGS -o $TMPE $kvm_cflags $TMPC 21 \
- | grep error: \
- | awk -F error: '{if (NR1) printf(, ); printf(%s,$2);}'`
-if test $kvmerr != ; then
- echo -e ${kvmerr}\n\
-NOTE: To enable KVM support, update your kernel to 2.6.29+ or install \
-recent
