Re: [Xen-users] DMA not enabled in Xen Kernel?

["Charles Johnson" <johnsoncharles@xxxxxxxxxxx>]

Hi,

Well, I'm trying to compile a custom xen0 kernel now but having some 
problems.
I downloaded the xen source then did a "make world" and ran install.sh

Then I went into the linux-2.6.11-xen0 directory and did "make ARCH=xen 
menuconfig" and setup the kernel the way I needed it and then did a "make".
It chugs along like normal for awhile until it pukes on this:

drivers/xen/balloon/balloon.c: In function `balloon_process':
drivers/xen/balloon/balloon.c:218: error: `phys_to_machine_mapping' 
undeclared (first use in this function)
drivers/xen/balloon/balloon.c:218: error: (Each undeclared identifier is 
reported only once
drivers/xen/balloon/balloon.c:218: error: for each function it appears in.)
drivers/xen/balloon/balloon.c:218: error: `INVALID_P2M_ENTRY' undeclared 
(first use in this function)
drivers/xen/balloon/balloon.c:261: warning: implicit declaration of function 
`scrub_pages'
drivers/xen/balloon/balloon.c:283: warning: implicit declaration of function 
`mfn_to_pfn'
make[3]: *** [drivers/xen/balloon/balloon.o] Error 1
make[2]: *** [drivers/xen/balloon] Error 2
make[1]: *** [drivers/xen] Error 2
make: *** [drivers] Error 2

Any ideas on how to get around this?

Thanks.

> From: "M.A. Williamson" <maw48@xxxxxxxxx>
> Reply-To: mark.williamson@xxxxxxxxxxxx
> To: Charles Johnson <johnsoncharles@xxxxxxxxxxx>
> CC: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] DMA not enabled in Xen Kernel?
> Date: 06 Jun 2005 17:45:22 +0100
>
> Chances are that the default XenLinux config doesn't support DMA for your 
> IDE chipset. It'll work but you'll need to get the source release and 
> compile a kernel (instructions in the manual) with support for your 
> chipset.
> Cheers,
> Mark
>
> On Jun 6 2005, Charles Johnson wrote:
>
> > I installed Xen using the binary release on debian sarge and got it to 
> > boot no problem but when I check if dma is enabled with 'hdparm /dev/hda' 
> > it's not.
> > I can't enable it either with 'hdparm -d1 /dev/hda'. Says operation not 
> > permited. Using my debian default kernel dma works just fine.
> > How can I enable dma with the Xen Kernel?
> >
> > Thanks!

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