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Subrahmanian, Raj

2007-Mar-28 22:23 UTC

[Xen-devel] Is unmodified_drivers broken?

All,
I tried to compile unmodified drivers on the latest changeset (14631).
The compile breaks.
This is what I did.
I booted up a x86_64 hvm domain that was running sles 10, I copied the
entire xen-unstable tree into the domain.
Then, I went into the unmodified_drivers directory and ran mkbuildtree
and make -C /usr/src/linux M=$PWD V=1 modules .
I have posted the results. 

- Have others seen this issue?
- Is this because of some kind of mess up where the
/usr/src/linux/include/xen directory is clashing with the local
include/xen directory? 
Looking at the overrides.mk file, it does seem like the local directory
is getting included first.

Thanks
Raj




sles10x64gmc:~ # cd xen-unstable.hg/
sles10x64gmc:~/xen-unstable.hg # cd unmodified_drivers/
sles10x64gmc:~/xen-unstable.hg/unmodified_drivers # cd linux-2.6/
sles10x64gmc:~/xen-unstable.hg/unmodified_drivers/linux-2.6 #
./mkbuildtree 
Defaulting to this machine''s architecture, x86_64, for linking.
This may be overridden on the command line (i386,x86_64,ia64).
sles10x64gmc:~/xen-unstable.hg/unmodified_drivers/linux-2.6 # make -C
/usr/src/linux M=$PWD V=1 modules
make: Entering directory `/usr/src/linux-2.6.16.21-0.8''
rm -rf /root/xen-unstable.hg/unmodified_drivers/linux-2.6/.tmp_versions
mkdir -p
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/.tmp_versions
make -f scripts/Makefile.build
obj=/root/xen-unstable.hg/unmodified_drivers/linux-2.6
make -f scripts/Makefile.build
obj=/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront
  gcc
-Wp,-MD,/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/.blk
front.o.d  -nostdinc -isystem
/usr/lib64/gcc/x86_64-suse-linux/4.1.0/include -D__KERNEL__ -Iincl
ude  -include /usr/src/linux-2.6.16.21-0.8/include/linux/autoconf.h
-Wall -Wundef -Wstrict-prototypes -Wno-trigraphs
-Werror-implicit-function-declaration -fno-strict-aliasi
ng -fno-common -ffreestanding -Os     -fomit-frame-pointer
-mtune=generic -m64 -mno-red-zone -mcmodel=kernel -pipe
-fno-reorder-blocks   -Wno-sign-compare -fno-asynchronous-u
nwind-tables -funit-at-a-time -mno-sse -mno-mmx -mno-sse2 -mno-3dnow
-Wdeclaration-after-statement -Wno-pointer-sign
-D__XEN_INTERFACE_VERSION__=0x00030202 -I/root/xen-unstab
le.hg/unmodified_drivers/linux-2.6/include
-I/root/xen-unstable.hg/unmodified_drivers/linux-2.6/compat-include
-DHAVE_XEN_PLATFORM_COMPAT_H -include /usr/src/linux-2.6.16.21-
0.8/include/linux/autoconf.h  -DMODULE -D"KBUILD_STR(s)=#s"
-D"KBUILD_BASENAME=KBUILD_STR(blkfront)"
-D"KBUILD_MODNAME=KBUILD_STR(xen_vbd)" -c -o
/root/xen-unstable.hg/unmod
ified_drivers/linux-2.6/blkfront/.tmp_blkfront.o
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c
In file included from include/xen/interface/xen.h:439,
                 from include/asm-i386/mach-xen/asm/hypervisor.h:41,
                 from
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/include/asm/hyperviso
r.h:2,
                 from
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/block.h:49,
                 from
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:3
9:
include/xen/interface/xen-compat.h:23:2: error: #error "These header
files do not support the requested interface version."
In file included from include/asm-i386/mach-xen/asm/hypervisor.h:110,
                 from
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/include/asm/hyperviso
r.h:2,
                 from
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/block.h:49,
                 from
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:3
9:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/include/asm/hypercall
.h:208: warning: #struct xen_platform_op# declared inside parameter list
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/include/asm/hypercall
.h:208: warning: its scope is only this definition or declaration, which
is probably not what you want
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/include/asm/hypercall
.h: In function #HYPERVISOR_platform_op#:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/include/asm/hypercall
.h:210: error: dereferencing pointer to incomplete type
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/include/asm/hypercall
.h:210: error: #XENPF_INTERFACE_VERSION# undeclared (first use in this
function)
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/include/asm/hypercall
.h:210: error: (Each undeclared identifier is reported only once
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/include/asm/hypercall
.h:210: error: for each function it appears in.)
In file included from
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:4
4:
include/xen/evtchn.h: In function #notify_remote_via_evtchn#:
include/xen/evtchn.h:107: warning: passing argument 1 of
#HYPERVISOR_event_channel_op# makes integer from pointer without a cast
include/xen/evtchn.h:107: error: too few arguments to function
#HYPERVISOR_event_channel_op#
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:
In function #blkfront_probe#:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:9
2: error: #XBT_NIL# undeclared (first use in this function)
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:
In function #talk_to_backend#:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:1
57: error: storage size of #xbt# isn#t known
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:1
79: error: implicit declaration of function #irq_to_evtchn_port#
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:1
57: warning: unused variable #xbt#
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:
In function #setup_blkring#:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:2
38: error: implicit declaration of function
#bind_listening_port_to_irqhandler#
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:
At top level:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:2
58: warning: #enum xenbus_state# declared inside parameter list
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:2
58: error: parameter 2 (#backend_state#) has incomplete type
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:
In function #connect#:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:3
23: error: #XBT_NIL# undeclared (first use in this function)
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:
In function #blkfront_closing#:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:3
88: error: implicit declaration of function #xenbus_frontend_closed#
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:
In function #blkif_release#:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:4
76: error: variable #state# has initializer but incomplete type
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:4
76: error: storage size of #state# isn#t known
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:4
76: warning: unused variable #state#
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:
In function #blkif_queue_request#:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:5
97: error: #BLKIF_OP_WRITE_BARRIER# undeclared (first use in this
function)
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:
In function #blkif_int#:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:7
22: error: #BLKIF_OP_WRITE_BARRIER# undeclared (first use in this
function)
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:7
23: error: #BLKIF_RSP_EOPNOTSUPP# undeclared (first use in this
function)
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:
In function #xlblk_init#:
/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.c:8
87: error: implicit declaration of function #is_running_on_xen#
make[2]: ***
[/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront/blkfront.o]
Error 1
make[1]: ***
[/root/xen-unstable.hg/unmodified_drivers/linux-2.6/blkfront] Error 2
make: *** [_module_/root/xen-unstable.hg/unmodified_drivers/linux-2.6]
Error 2
make: Leaving directory `/usr/src/linux-2.6.16.21-0.8''

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Ian Campbell

2007-Mar-29 05:46 UTC

head link

Re: [Xen-devel] Is unmodified_drivers broken?

On Wed, 2007-03-28 at 18:23 -0400, Subrahmanian, Raj
wrote:> All,
> I tried to compile unmodified drivers on the latest changeset (14631).
> The compile breaks.
> This is what I did.
> I booted up a x86_64 hvm domain that was running sles 10, I copied the
> entire xen-unstable tree into the domain.
> Then, I went into the unmodified_drivers directory and ran mkbuildtree
> and make -C /usr/src/linux M=$PWD V=1 modules .
> I have posted the results. 
> 
> - Have others seen this issue?
> - Is this because of some kind of mess up where the
> /usr/src/linux/include/xen directory is clashing with the local
> include/xen directory? 
> Looking at the overrides.mk file, it does seem like the local directory
> is getting included first.
That''s correct. The include/xen directory in the kernel you are
building
against is clashing with the one in the unmodified drivers. The
workaround is to rename include/xen in the kernel to something else.

Unfortunately Kbuild doesn''t give us an easy way to make sure our
headers take precedence over the in kernel ones.

Ian.


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Xen devel - Mar 2007 - Is unmodified_drivers broken?

[Xen-devel] Is unmodified_drivers broken?

Re: [Xen-devel] Is unmodified_drivers broken?