diff mbox

vhost-scsi: Depend on NET for memcpy_fromiovec

Message ID 1368579583-13097-1-git-send-email-asias@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Asias He May 15, 2013, 12:59 a.m. UTC
scsi.c includes vhost.c which uses memcpy_fromiovec.

This patch fixes this build failure.

   From Randy Dunlap:
   '''
   on x86_64:

   ERROR: "memcpy_fromiovec" [drivers/vhost/vhost_scsi.ko] undefined!

   It needs to depend on NET since net/core/ provides that function.
   '''

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Asias He <asias@redhat.com>
---
 drivers/vhost/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Nicholas A. Bellinger May 15, 2013, 3:10 a.m. UTC | #1
On Wed, 2013-05-15 at 08:59 +0800, Asias He wrote:
> scsi.c includes vhost.c which uses memcpy_fromiovec.
> 
> This patch fixes this build failure.
> 
>    From Randy Dunlap:
>    '''
>    on x86_64:
> 
>    ERROR: "memcpy_fromiovec" [drivers/vhost/vhost_scsi.ko] undefined!
> 
>    It needs to depend on NET since net/core/ provides that function.
>    '''
> 
> Reported-by: Randy Dunlap <rdunlap@infradead.org>
> Signed-off-by: Asias He <asias@redhat.com>

Hey Asias & MST,

FYI, I'll be sending a PULL request to Linus in the next couple of days
for -rc2.

Let me know if you'd like this to be picked up.

--nab

> ---
>  drivers/vhost/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
> index 8b9226d..0403323 100644
> --- a/drivers/vhost/Kconfig
> +++ b/drivers/vhost/Kconfig
> @@ -12,7 +12,7 @@ config VHOST_NET
>  
>  config VHOST_SCSI
>  	tristate "VHOST_SCSI TCM fabric driver"
> -	depends on TARGET_CORE && EVENTFD && m
> +	depends on NET && TARGET_CORE && EVENTFD && m
>  	select VHOST_RING
>  	default n
>  	---help---


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Asias He May 15, 2013, 3:44 a.m. UTC | #2
On Tue, May 14, 2013 at 08:10:20PM -0700, Nicholas A. Bellinger wrote:
> On Wed, 2013-05-15 at 08:59 +0800, Asias He wrote:
> > scsi.c includes vhost.c which uses memcpy_fromiovec.
> > 
> > This patch fixes this build failure.
> > 
> >    From Randy Dunlap:
> >    '''
> >    on x86_64:
> > 
> >    ERROR: "memcpy_fromiovec" [drivers/vhost/vhost_scsi.ko] undefined!
> > 
> >    It needs to depend on NET since net/core/ provides that function.
> >    '''
> > 
> > Reported-by: Randy Dunlap <rdunlap@infradead.org>
> > Signed-off-by: Asias He <asias@redhat.com>
> 
> Hey Asias & MST,
> 
> FYI, I'll be sending a PULL request to Linus in the next couple of days
> for -rc2.
> 
> Let me know if you'd like this to be picked up.

Yes, this is 3.10 material. Sounds good to me.

> --nab
> 
> > ---
> >  drivers/vhost/Kconfig | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
> > index 8b9226d..0403323 100644
> > --- a/drivers/vhost/Kconfig
> > +++ b/drivers/vhost/Kconfig
> > @@ -12,7 +12,7 @@ config VHOST_NET
> >  
> >  config VHOST_SCSI
> >  	tristate "VHOST_SCSI TCM fabric driver"
> > -	depends on TARGET_CORE && EVENTFD && m
> > +	depends on NET && TARGET_CORE && EVENTFD && m
> >  	select VHOST_RING
> >  	default n
> >  	---help---
> 
>
Rusty Russell May 15, 2013, 5:17 a.m. UTC | #3
Asias He <asias@redhat.com> writes:
> scsi.c includes vhost.c which uses memcpy_fromiovec.
>
> This patch fixes this build failure.
>
>    From Randy Dunlap:
>    '''
>    on x86_64:
>
>    ERROR: "memcpy_fromiovec" [drivers/vhost/vhost_scsi.ko] undefined!
>
>    It needs to depend on NET since net/core/ provides that function.
>    '''

Proper fix please.

Though I can't see why you thought this was a good idea.  Nonetheless, I
shan't highlight why: I have far too much respect for your intellects
and abilities.

No, don't thank me!
Rusty.
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Asias He May 16, 2013, 2:08 a.m. UTC | #4
On Wed, May 15, 2013 at 02:47:53PM +0930, Rusty Russell wrote:
> Asias He <asias@redhat.com> writes:
> > scsi.c includes vhost.c which uses memcpy_fromiovec.
> >
> > This patch fixes this build failure.
> >
> >    From Randy Dunlap:
> >    '''
> >    on x86_64:
> >
> >    ERROR: "memcpy_fromiovec" [drivers/vhost/vhost_scsi.ko] undefined!
> >
> >    It needs to depend on NET since net/core/ provides that function.
> >    '''
> 
> Proper fix please.

--verbose please ;-)

Making VHOST_SCSI depends on NET looks weird but this is because vhost
core depends on it. A bunch of patches are cleaning this up. Since MST
wanted do the vhost.ko split up in 3.11, plus your WIP vringh work, so I
wanted the fix for 3.10 as minimum as possible.

Other users are using memcpy_fromiovec and friends outside net. It seems
a good idea to put it in a util library. e.g.  crypto/algif_skcipher.c
which also depends on NET for it.

> Though I can't see why you thought this was a good idea.  Nonetheless, I
> shan't highlight why: I have far too much respect for your intellects
> and abilities.
> 
> No, don't thank me!

Interesting.

> Rusty.
diff mbox

Patch

diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
index 8b9226d..0403323 100644
--- a/drivers/vhost/Kconfig
+++ b/drivers/vhost/Kconfig
@@ -12,7 +12,7 @@  config VHOST_NET
 
 config VHOST_SCSI
 	tristate "VHOST_SCSI TCM fabric driver"
-	depends on TARGET_CORE && EVENTFD && m
+	depends on NET && TARGET_CORE && EVENTFD && m
 	select VHOST_RING
 	default n
 	---help---