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xen-users
Re: [Xen-users] DMA not enabled in Xen Kernel?
I'm guessing that "Make" is just doing a default kernel make which won't
be the right ARCH. Try going ../ to the xen-2.0 directory and type
'make kernels'. This will make the domU and dom0 kernels with ARCH=xen
using your new .config file, and install them to xen-2.0/dist. From the
dist directory you can run './install.sh' to copy everything to where
you need it to be. Be sure you have backed up any customizations in
/etc/xen first as they will be overwritten with the defaults.
I just spent a few hours going through this to get my ide chipset in the
kernel (as well as usb support, and to make a boatload of modules)
-Mark
Charles Johnson wrote:
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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