Re: [Xen-users] Xen 4.13 and Raspberry Pi4

[Julien Grall <julien@xxxxxxx>]

Hi,

On 26/03/2020 00:20, marcos.ata1983@xxxxxxxxx wrote:
> Em 24/03/2020 08:05, Julien Grall escreveu:
> > On 24/03/2020 01:19, marcos.ata1983@xxxxxxxxx wrote:
> > > Hi,
> > Hello,
> >
> > > On *https://wiki.xenproject.org/wiki/Xen_Project_4.13_Feature_List* I 
> > > read that "Xen 4.13 also supports Hygon Dhyana 18h processor family, 
> > > *Raspberry Pi4* and Intel AVX512."
> > > So I try to install Xen Project from source (xen-4.13.0.tar.gz) on my 
> > > Raspberry Pi 4 4GB (with Raspbian Buster Lite):
> > > *./configure* its OK
> > >
> > > But *make world *or *make dist *got the error message:
> > >
> > >
> > > /tmp/cccDG1wU.s: Assembler messages:
> > > /tmp/cccDG1wU.s:205: Error: selected processor does not support `dmb' 
> > > in ARM mode
> > > /tmp/cccDG1wU.s:227: Error: selected processor does not support `dmb' 
> > > in ARM mode
> > > /tmp/cccDG1wU.s:268: Error: selected processor does not support `dmb' 
> > > in ARM mode
> > > /tmp/cccDG1wU.s:289: Error: selected processor does not support `dmb' 
> > > in ARM mode
> > > make[5]: *** 
> > > [/tmp/xen-4.13.0/tools/xenstore/../../tools/Rules.mk:213: 
> > > xenstored_domain.o] Error 1
> > > make[5]: Leaving directory '/tmp/xen-4.13.0/tools/xenstore'
> > > make[4]: *** [/tmp/xen-4.13.0/tools/../tools/Rules.mk:237: 
> > > subdir-install-xenstore] Error 2
> > > make[4]: Leaving directory '/tmp/xen-4.13.0/tools'
> > > make[3]: *** [/tmp/xen-4.13.0/tools/../tools/Rules.mk:232: 
> > > subdirs-install] Error 2
> > > make[3]: Leaving directory '/tmp/xen-4.13.0/tools'
> > > make[2]: *** [Makefile:73: install] Error 2
> > > make[2]: Leaving directory '/tmp/xen-4.13.0/tools'
> > > make[1]: *** [Makefile:134: install-tools] Error 2
> > > make[1]: Leaving directory '/tmp/xen-4.13.0'
> > > make: *** [Makefile:172: world] Error 2
> > This seems to suggest the compiler used is not behaving as Xen 
> > expects. Would you mind to give more details on the compiler used?
> ii  bcc 0.16.17-3.3                          armhf        16-bit x86 C 
> compiler
> ii  device-tree-compiler 1.4.7-3+rpt1                         
> armhf        Device Tree Compiler for Flat Device Trees
> ii  g++ 4:8.3.0-1+rpi2                       armhf        GNU C++ compiler
> ii  g++-8 8.3.0-6+rpi1                         armhf        GNU C++ compiler
> ii  gcc 4:8.3.0-1+rpi2                       armhf        GNU C compiler
> ii  gcc-8 8.3.0-6+rpi1                         armhf        GNU C compiler
> ii  libllvm9:armhf 1:9.0.1-6+rpi1~bpo10+1               armhf        
> Modular compiler and toolchain technologies, runtime library
> ii  libluajit-5.1-2:armhf 2.1.0~beta3+dfsg-5.1                 
> armhf        Just in time compiler for Lua - library version
> ii  libluajit-5.1-common 2.1.0~beta3+dfsg-5.1                 
> all          Just in time compiler for Lua - common files
> ii  libxkbcommon0:armhf 0.8.2-1                              
> armhf        library interface to the XKB compiler - shared library
> ii  luajit 2.1.0~beta3+dfsg-5.1                 armhf        Just in 
> time compiler for Lua programming language version 5.1
> ii  ocaml-compiler-libs 4.05.0-11+rpi1                       
> armhf        OCaml interpreter and standard libraries
> > > Can someone help me? Its really possible to install Xen on Raspberry 
> > > Pi 4?
> > You may want to have a look at 
> > https://github.com/dornerworks/xen-rpi4-builder.
> I tried (I gave up on the slow and inconsistent download of 
> gcc-arm-8.3-2019.03-x86_64-aarch64-linux-gnu.tar.xz).
> Anyway my question is: does Xen Project 4.13 support Raspberry Pi4?, if 
> so, maybe it was a good idea a how-to with dependencies, etc.
Andre and Stewart (in CC) worked on the RPI4 port. They may have a 
pointer to instructions rather than a script.
As an aside note, if there are any instructions, can they be added on 
the wiki [1]?
Cheers,

[1] https://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions

--
Julien Grall

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