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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] Xen 4.13 and Raspberry Pi4
Hi, Em 26/03/2020 07:00, André Przywara
escreveu:
On 26/03/2020 09:18, Julien Grall wrote: 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):^^^^^^^^ This might be a problem. I am not sure we really support this crippled userland (ARMv6 + hardfloat) for Xen. Since the hardware virtualisation that Xen relies on was introduced in ARMv7 only, ARMv6 was never a supported platform. I guess the statement about "Raspberry Pi4" support in the release notes applies purely to the hardware, as in: The Xen hypervisor is able to boot on the board - at least that is all I tested. This is mentioned because former RPi models (<= 3) could not run Xen due to the missing GIC interrupt controller, which is now fixed in the RPi4. That being said you could try to use any of the proper 64-bit distributions for the RPi4 out there, at least that should fix your compilation problems. Done, Ubuntu 18.04 arm64 fixed the compilation problems. Apparently is using u-boot, I tried u-boot-update but don't work for Xen kernel:If and how they support installing the hypervisor is another issue. If the boot process uses EFI (and thus grub), it should work, but if the distribution relies on the RaspberryPi foundation boot process, I don't see how we could load both Xen and Dom0 easily. P: Checking for EXTLINUX directory... not
found. The /boot/extlinux/extlinux.conf look like: default l0 System.map-5.3.0-1019-raspi2 config-5.3.0-1017-raspi2 config-5.3.0-1019-raspi2 dtb->dtbs/5.3.0-1019-raspi2/./bcm2711-rpi-4-b.dtb dtb-5.3.0-1017-raspi2->dtbs/5.3.0-1017-raspi2/./bcm2711-rpi-4-b.dtb dtb-5.3.0-1019-raspi2->dtbs/5.3.0-1019-raspi2/./bcm2711-rpi-4-b.dtb dtbs extlinux firmware grub initrd.img->initrd.img-5.3.0-1019-raspi2 initrd.img-5.3.0-1017-raspi2 initrd.img-5.3.0-1019-raspi2 initrd.img.old->initrd.img-5.3.0-1017-raspi2 vmlinuz->vmlinuz-5.3.0-1019-raspi2 vmlinuz-5.3.0-1017-raspi2 vmlinuz-5.3.0-1019-raspi2 vmlinuz.old->vmlinuz-5.3.0-1017-raspi2 xen->xen-4.13.0 xen-4->xen-4.13.0 xen-4.13->xen-4.13.0 xen-4.13.0 xen-4.13.0.config
To your particular problem:*./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"dmb" as an *instruction* is only supported on ARMv7, on ARMv6 it's a system register write. I guess the Raspbian compiler is configured to generate ARMv6-hf compatible code, so does not support the instruction. Were you able to compile the hypervisor (make xen)? I think we fix this issue there by forcing v7 support in the Makefiles, which we need anyway for the hardware virtualisation code. make xen work make install no : ln -f -s xen-4.13.0 //boot/xen-4.13 But ok I leaved Raspbian per Ubuntu 18.04 arm64. So if I understand correctly, Xen was
compiled successfully, the problem is the boot of the Xen
kernel due to the Raspberry Pi architecture. Maybe u-boot could help but I'm not sure.
Anyway, I am interested in helping even
if testing something. Cheers. I am not sure if it's worth fixing this for the userland parts as well. Clearly Xen can only run on >= ARMv7 hardware, so we might add a flag to the compiler to enforce this? Cheers, Andre./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 2This 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 librariesCan 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_______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-users -- Marcos Renato da Silva Junior Universidade Estadual Paulista - Unesp Faculdade de Engenharia de Ilha Solteira - FEIS Departamento de Engenharia Elétrica - DEE 15385-000 - Ilha Solteira/SP (18) 3743-1164 _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-users
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