how to compile kvm 64 bit

how to compile kvm 64 bit

[paolo pedaletti]

Ciao,
sorry for this silly question, but I can't compile kvm-79 for AMD 64bit

Linux 2.6.27-9-server, ubuntu 8.10
model name	: AMD Athlon(tm) 64 X2 Dual Core Processor 5600+


root@kvm1:/usr/src/kvm-79# ./configure
Install prefix    /usr/local
BIOS directory    /usr/local/share/qemu
binary directory  /usr/local/bin
Manual directory  /usr/local/share/man
ELF interp prefix /usr/gnemul/qemu-%M
Source path       /usr/src/kvm-79/qemu
C compiler        gcc
Host C compiler   gcc
ARCH_CFLAGS       -m64
make              make
install           install
host CPU          x86_64
host big endian   no
target list       x86_64-softmmu
gprof enabled     no
sparse enabled    no
profiler          no
static build      no
-Werror enabled   no
SDL support       yes
SDL static link   yes
curses support    yes
mingw32 support   no
Audio drivers     oss
Extra audio cards
Mixer emulation   no
VNC TLS support   no
kqemu support     no
kvm support       yes
CPU emulation     yes
brlapi support    no
Documentation     no
NPTL support      yes
vde support       yes
AIO support       yes
KVM support       yes

root@kvm1:/usr/src/kvm-79# make
make -C libkvm
make[1]: Entering directory `/usr/src/kvm-79/libkvm'
gcc -march=i686    -mcpu=i686    -malign-functions=4 -O2 -m64
-D__x86_64__ -MMD -MF ./.libkvm-x86.d -g -fomit-frame-pointer -Wall
-fno-stack-protector   -I /usr/src/kvm-79/kernel/include   -c -o
libkvm-x86.o libkvm-x86.c
`-mcpu=' is deprecated. Use `-mtune=' or '-march=' instead.
libkvm-x86.c:1: error: CPU you selected does not support x86-64
instruction set
libkvm-x86.c:1: warning: -malign-functions is obsolete, use
-falign-functions
make[1]: *** [libkvm-x86.o] Error 1
make[1]: Leaving directory `/usr/src/kvm-79/libkvm'
make: *** [libkvm] Error 2

it use i686

witch command line parameter should I use?

thank you.


-- 
Paolo Pedaletti

Re: how to compile kvm 64 bit

[Charles Duffy]

paolo pedaletti wrote:
> Ciao,
> sorry for this silly question, but I can't compile kvm-79 for AMD 64bit

Please pardon me for following up on one silly question with another -- 
but is your host running a 64-bit userland? (What is the output of 
"uname -m"?)

Fwd: how to compile kvm 64 bit

[Malinka Rellikwodahs]

your -mcpu=i686 specifically tells gcc to compile for 32-bit cpu you
need to use something like

-march=k8 or -mtune=k8 usually

http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86_002d64-Options.html

the difference between march and mtune is whether it breaks
compatability with other CPU's (mtune doesn't)

On Thu, Dec 4, 2008 at 10:24, paolo pedaletti <paolo.pedaletti@gmail.com> wrote:
>
> Ciao,
> sorry for this silly question, but I can't compile kvm-79 for AMD 64bit
>
> Linux 2.6.27-9-server, ubuntu 8.10
> model name      : AMD Athlon(tm) 64 X2 Dual Core Processor 5600+
>
>
> root@kvm1:/usr/src/kvm-79# ./configure
> Install prefix    /usr/local
> BIOS directory    /usr/local/share/qemu
> binary directory  /usr/local/bin
> Manual directory  /usr/local/share/man
> ELF interp prefix /usr/gnemul/qemu-%M
> Source path       /usr/src/kvm-79/qemu
> C compiler        gcc
> Host C compiler   gcc
> ARCH_CFLAGS       -m64
> make              make
> install           install
> host CPU          x86_64
> host big endian   no
> target list       x86_64-softmmu
> gprof enabled     no
> sparse enabled    no
> profiler          no
> static build      no
> -Werror enabled   no
> SDL support       yes
> SDL static link   yes
> curses support    yes
> mingw32 support   no
> Audio drivers     oss
> Extra audio cards
> Mixer emulation   no
> VNC TLS support   no
> kqemu support     no
> kvm support       yes
> CPU emulation     yes
> brlapi support    no
> Documentation     no
> NPTL support      yes
> vde support       yes
> AIO support       yes
> KVM support       yes
>
> root@kvm1:/usr/src/kvm-79# make
> make -C libkvm
> make[1]: Entering directory `/usr/src/kvm-79/libkvm'
> gcc -march=i686    -mcpu=i686    -malign-functions=4 -O2 -m64
> -D__x86_64__ -MMD -MF ./.libkvm-x86.d -g -fomit-frame-pointer -Wall
> -fno-stack-protector   -I /usr/src/kvm-79/kernel/include   -c -o
> libkvm-x86.o libkvm-x86.c
> `-mcpu=' is deprecated. Use `-mtune=' or '-march=' instead.
> libkvm-x86.c:1: error: CPU you selected does not support x86-64
> instruction set
> libkvm-x86.c:1: warning: -malign-functions is obsolete, use
> -falign-functions
> make[1]: *** [libkvm-x86.o] Error 1
> make[1]: Leaving directory `/usr/src/kvm-79/libkvm'
> make: *** [libkvm] Error 2
>
> it use i686
>
> witch command line parameter should I use?
>
> thank you.
>
>
> --
> Paolo Pedaletti
>
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
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> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: how to compile kvm 64 bit

[paolo pedaletti]

Ciao Charles,

>> sorry for this silly question, but I can't compile kvm-79 for AMD 64bit
> 
> Please pardon me for following up on one silly question with another --
> but is your host running a 64-bit userland? (What is the output of
> "uname -m"?)

root@kvm1:/usr/src/kvm-79# uname -a
Linux kvm1 2.6.27-9-server #1 SMP Thu Nov 20 22:56:07 UTC 2008 x86_64
GNU/Linux

root@kvm1:/usr/src/kvm-79# uname -m
x86_64

it's a 64 bit kernel

-- 
Paolo Pedaletti

Re: Fwd: how to compile kvm 64 bit

[paolo pedaletti]

Ciao Malinka,

> your -mcpu=i686 specifically tells gcc to compile for 32-bit cpu you
> need to use something like
> -march=k8 or -mtune=k8 usually

ok, I can understand it, but I thought that it was enough to run
./compile
to obtain the correct Makefile with the right cpu-option

>> root@kvm1:/usr/src/kvm-79# ./configure
>> Source path       /usr/src/kvm-79/qemu
>> C compiler        gcc
>> Host C compiler   gcc
>> ARCH_CFLAGS       -m64
>> make              make
>> install           install
>> host CPU          x86_64
>> host big endian   no
>> target list       x86_64-softmmu

so ./compile detect the right cpu/options

>> root@kvm1:/usr/src/kvm-79# make
>> make -C libkvm
>> make[1]: Entering directory `/usr/src/kvm-79/libkvm'
>> gcc -march=i686    -mcpu=i686    -malign-functions=4 -O2 -m64
>> -D__x86_64__ -MMD -MF ./.libkvm-x86.d -g -fomit-frame-pointer -Wall
>> -fno-stack-protector   -I /usr/src/kvm-79/kernel/include   -c -o
>> libkvm-x86.o libkvm-x86.c

but the Makefile is wrong

do I do something wrong?
Is it necessary to do something different?

thank you

-- 
Paolo Pedaletti

Re: Fwd: how to compile kvm 64 bit

[Hollis Blanchard]

On Fri, 2008-12-05 at 09:27 +0100, paolo pedaletti wrote:
> Ciao Malinka,
> 
> > your -mcpu=i686 specifically tells gcc to compile for 32-bit cpu you
> > need to use something like
> > -march=k8 or -mtune=k8 usually
> 
> ok, I can understand it, but I thought that it was enough to run
> ./compile
> to obtain the correct Makefile with the right cpu-option
> 
> >> root@kvm1:/usr/src/kvm-79# ./configure
> >> Source path       /usr/src/kvm-79/qemu
> >> C compiler        gcc
> >> Host C compiler   gcc
> >> ARCH_CFLAGS       -m64
> >> make              make
> >> install           install
> >> host CPU          x86_64
> >> host big endian   no
> >> target list       x86_64-softmmu
> 
> so ./compile detect the right cpu/options

This output is from qemu's configure script, so applies only within the
qemu directory, and you seem to be having trouble with libkvm.

> >> root@kvm1:/usr/src/kvm-79# make
> >> make -C libkvm
> >> make[1]: Entering directory `/usr/src/kvm-79/libkvm'
> >> gcc -march=i686    -mcpu=i686    -malign-functions=4 -O2 -m64
> >> -D__x86_64__ -MMD -MF ./.libkvm-x86.d -g -fomit-frame-pointer -Wall
> >> -fno-stack-protector   -I /usr/src/kvm-79/kernel/include   -c -o
> >> libkvm-x86.o libkvm-x86.c
> 
> but the Makefile is wrong

I don't see arch=, cpu=, nor i686 anywhere in the libkvm build scripts.
Could you have a shell alias or some other strangeness on your system
that is adding those i686 options?

-- 
Hollis Blanchard
IBM Linux Technology Center

Re: Fwd: how to compile kvm 64 bit

[Paolo Pedaletti]

Ciao Hollis,

> I don't see arch=, cpu=, nor i686 anywhere in the libkvm build scripts.
> Could you have a shell alias or some other strangeness on your system
> that is adding those i686 options?

yes, it was true...
TANK YOU!

some old vars that I used to use on another "old" platform.

thanks again...

-- 
/* Paolo Pedaletti,
 * paolo@pedaletti.it www.pedaletti.it */