Date: Wed, 4 Sep 2002 14:48:54 -0400
From: Phil Stracchino <alaric@babcom.com>
To: linux-kernel@vger.kernel.org
Cc: alaric@babcom.com
Subject: FOLLOWUP:  Kernel 2.4.19 does not export _mmx_memcpy when compiled with gcc-3.2 and Athlon optimizations
Message-ID: <20020904184854.GA9141@babylon5.babcom.com>
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FOLLOWUP:
I built a K6-optimized kernel and manually turned on CONFIG_X86_USE_3DNOW
before beginning compilation, installed the kernel, and ran depmod -a.  
The result:

babylon5:root:/usr/src/linux-2.4.19:65 # depmod -a
depmod: *** Unresolved symbols in /lib/modules/2.4.19/kernel/drivers/block/rd.o
depmod: *** Unresolved symbols in /lib/modules/2.4.19/kernel/drivers/cdrom/cdrom.o
depmod: *** Unresolved symbols in /lib/modules/2.4.19/kernel/drivers/char/serial.o
depmod: *** Unresolved symbols in /lib/modules/2.4.19/kernel/drivers/ide/ide-cd.o
...
...
... well, you get the idea.  A total of 40 modules fail, all with the
same error.  The following is the list of failed modules:

drivers/block/rd.o
drivers/cdrom/cdrom.o
drivers/char/serial.o
drivers/ide/ide-cd.o
drivers/md/lvm-mod.o
drivers/md/raid5.o
drivers/net/ppp_async.o
drivers/net/ppp_deflate.o
drivers/net/ppp_generic.o
drivers/net/slhc.o
drivers/net/slip.o
drivers/parport/parport.o
drivers/parport/parport_pc.o
drivers/pcmcia/pcmcia_core.o
drivers/scsi/aic7xxx/aic7xxx.o
drivers/scsi/ide-scsi.o
drivers/scsi/sg.o
drivers/scsi/sr_mod.o
drivers/scsi/st.o
drivers/usb/hid.o
drivers/usb/storage/usb-storage.o
drivers/usb/usb-uhci.o
drivers/usb/usbcore.o
fs/fat/fat.o
fs/inflate_fs/inflate_fs.o
fs/intermezzo/intermezzo.o
fs/isofs/isofs.o
fs/lockd/lockd.o
fs/minix/minix.o
fs/nfs/nfs.o
fs/nfsd/nfsd.o
fs/reiserfs/reiserfs.o
fs/smbfs/smbfs.o
fs/udf/udf.o
fs/ufs/ufs.o
fs/vfat/vfat.o
net/ipv4/netfilter/ip_tables.o
net/ipv4/netfilter/ipt_REJECT.o
net/ipv4/netfilter/iptable_nat.o
net/sunrpc/sunrpc.o


So it definitely looks like something is unhappy with CONFIG_X86_USE_3DNOW,
possibly only when compiled with gcc-3.2, possibly not.  Why it's not
being exported, I have no idea; as far as I can tell, it should be.

I haven't tried building an Athlon-optimized kernel *without* using
CONFIG_X86_USE_3DNOW.


-- 
  *********  Fight Back!  It may not be just YOUR life at risk.  *********
  phil stracchino   ::   alaric@babcom.com   ::   halmayne@sourceforge.net
    unix ronin     ::::   renaissance man   ::::   mystic zen biker geek
     2000 CBR929RR, 1991 VFR750F3 (foully murdered), 1986 VF500F (sold)
       Linux Now! ...because friends don't let friends use Microsoft.
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