Re: Testing xen-arm on Arndale

[Julien Grall <julien.grall@citrix.com>]

On 04/04/2013 03:06 AM, See-Hwan Yoo wrote:

> Hello Julien,


Hello,

> Thank you for informative way.
> 
> However, the git tree also seems broken.
> I have faced several problems, and some of them are as follows.
> 
> 1. libxc compilation error.
> In xc_dom.h, declares the following function.
> int xc_dom_feature_translated(struct xc_dom_image *dom);
> 
> However, the function is differently defined at the following locations,
> differently.
> xc_core_arm.h has macro that has the same name; and
> xc_dom_arm.c has static function.
> Fortunately, they seem to function in the same way.
> Thus, one of them can be eliminated.


Thanks, I have pushed a fix in my branch.

 
> 2. several files under blktap/blktap2
> have type mismatch conflicts. (mostly off_t and uint64_t)
> They have to be re-touched so that the compiler would not complains
> about it.


blktap and blktap2 are not usefull for a basic installation.
By the way, I think Ian has fixed the compilation issue in it's
cross-compil branch, but I didn't add this patch for the arndale.

> On Wed, Apr 3, 2013 at 10:22 PM, Julien Grall <julien.grall@citrix.com
> <mailto:julien.grall@citrix.com>> wrote:
> 
>     On 04/03/2013 12:57 PM, See-Hwan Yoo wrote:
> 
>     > Thank you, Stefano:
>     > I have checked -vvv and it seems that xl is looking for a file that is
>     > missing. I've included the printed message at the tail of the mail.
>     > I've farmed xl tools through Ian campbell's cross toolchain wiki.
>     >
>     > Making cross toolchain using schroot is a good way around building the
>     > xen tools, but documentation could be improved if it includes the
>     > following facts.
>     > Because the current arndale board's rootfs snapshot does not
>     include the
>     > proper python library tools, it firstly complains about some missing
>     > python modules such as 'commands'.
>     > In addition, libyajl library files are also missing. In the
>     > cross-compiling phase, I've installed those library's dev port to
>     > schroot build directory; however, it has to be explicitly copied
>     to the
>     > rootfs so that libxenguest/libxenlight can refer those libraries.
>     > Namely, the dependent libraries have to be included in the root file
>     > system; I hope the document includes specifically which libraries have
>     > run-time dependency, and which modules are required to run.
>     >
>     > Finally, I am curious about the mismatch in the two debug console
>     > options: in the bootargs options console=dbgp (given in dts), and
>     codes
>     > in start_xen() shows
>     > exynos5_uart_init(2, FIXMAP_ADDR, ...);
>     > It seems like uart2 is fixed to use as console; but the code seems
>     work
>     > only when console=dbgp.
>     > How about using console=com1/2 instead of dbgp? (it seems more
>     intuitive.)
> 
>     Xen can use up to 3 serials port with the following name: com1,
>     com2, dbgp.
>     The first is assigned to value 0 and the last 2.
>     Here, index 2 (ie dbgp) is used because log will output to the
>     second UART.
>     But it's completely unrelated, and it was for a first draft.
> 
>     I'm currently trying to clean up the code for the exynos5 in order
>     to have
>     a single code base for all ARM platforms. I'll plan to modify serial
>     handling for ARM at that time.
> 
>     > The log from xl create with -vvv option is as follows:
>     > xl -vvv create dom1
>     > Parsing config from dom1
>     > libxl: verbose:
>     libxl_create.c:130:libxl__domain_build_info_setdefault:
>     > qemu-xen is unavailable, use qemu-xen-traditional instead: No such
>     file
>     > or directory
>     > libxl: debug: libxl_create.c:1236:do_domain_create: ao 0x2ea28:
>     create:
>     > how=(nil) callback=(nil) poller=0x2e6a8
>     > xc: detail: domctl operation failed -- need to rebuild the user-space
>     > tool set?
> 
> 
>     Which tree do you use to build the tools? You need to use
>     git clone --branch exynos5250-2013-03-22
>     git://xenbits.xen.org/people/aperard/xen-arm.git
>     Exynos5 <http://xenbits.xen.org/people/aperard/xen-arm.git Exynos5>
>     port uses an old tree and it's not compatible with recent xen
>     due to ABI breakage. It should allow you to cross compile tools.
> 
>     > libxl: error: libxl_create.c:423:libxl__domain_make: domain
>     creation fail
>     > libxl: error: libxl_create.c:651:initiate_domain_create: cannot make
>     > domain: -3
>     > libxl: error: libxl.c:1377:libxl__destroy_domid: non-existant
>     domain -1
>     > libxl: error: libxl.c:1341:domain_destroy_callback: unable to destroy
>     > guest with domid 4294967295
>     > libxl: error: libxl_create.c:1215:domcreate_destruction_cb: unable to
>     > destroy domain 4294967295 following failed creation
>     > libxl: debug: libxl_event.c:1569:libxl__ao_complete: ao 0x2ea28:
>     > complete, rc=-3
>     > libxl: debug: libxl_create.c:1249:do_domain_create: ao 0x2ea28:
>     > inprogress: poller=0x2e6a8, flags=ic
>     > libxl: debug: libxl_event.c:1541:libxl__ao__destroy: ao 0x2ea28:
>     destroy
>     > xc: debug: hypercall buffer: total allocations:5 total releases:5
>     > xc: debug: hypercall buffer: current allocations:0 maximum
>     allocations:2
>     > xc: debug: hypercall buffer: cache current size:2
>     > xc: debug: hypercall buffer: cache hits:3 misses:2 toobig:0
>     >
> 
> 
>     Sincerely yours,
> 
>     Julien
> 
>