I'm tring to solve the "no console" problem "only one core" problem with guide of http://lists.xenproject.org/archives/html/xen-users/2013-03/msg00239.html
These is the information: df -h /dev/sda1 511M 31M 481M 7% /boot/efi ~/boot/efi$ du 3420 ./EFI/ubuntu 8 ./EFI/Dell/BootOptionCache 12 ./EFI/Dell 28268 ./EFI/xen //this is where i put the xen related files 31704 ./EFI 31708 . /boot/efi/EFI$ ls xen initrd.img-3.13.0-24-generic vmlinuz-3.13.0-24-generic xen.cfg xen.efi xen$ cat xen.cfg [global] default=xen [xen] options=console=vga,com1 com1=57600 loglvl=all noreboot dom0_mem=8g,max:8g kernel=vmlinuz-3.13.0-24-generic root=/dev/mapper/xen--vg-root ro #earlyprintk=xen ramdisk=initrd.img-3.13.0-24-generic However, the 'efibootmgr' cmd fails as follows and the UEFI shell could only detect the ubuntu item as http://snag.gy/hSnDs.jpg shows. 'efibootmgr -v' outputs Fatal: Couldn't open either sysfs or procfs directories for accessing EFI variables. Try 'modprobe efivars' as root. As this article suggests https://www.happyassassin.net/2014/01/25/uefi-boot-how-does-that-actually-work-then/ , I'm probably in a compatitable bios mode instead of the UEFI native boot is actually used using the detecting method. This is the detailed BIOS settings: http://snag.gy/v8XeJ.jpg http://snag.gy/hSnDs.jpg http://snag.gy/pQz7o.jpg http://snag.gy/6TdqJ.jpg Any hints? Is the config wrong or the location? quizy_jo...@outlook.com From: quizy_jo...@outlook.com Date: 2015-11-29 19:26 To: xen-devel Subject: [Xen-devel] boot xen use legacy bios I got the problem of multiple cores CPU cannot be fully used when using UEFI mode. It is suggested that I should be boot the xen in legacy mode. How is it done? My environment: Xen 4.1.2, PowerEdge R730xd E5-2603 v3 @ 1.60GHz, ubuntu 14.04 kernel 3.13.0-24-generic Some References I use: http://www.gossamer-threads.com/lists/xen/devel/266383 http://wiki.xenproject.org/wiki/Xen_EFI#Booting_Xen_under_EFI_platform http://lists.xenproject.org/archives/html/xen-users/2013-03/msg00239.html http://wiki.xenproject.org/wiki/Xen_EFI#Booting_Xen_under_EFI_platform http://xenbits.xenproject.org/docs/unstable/misc/efi.html Here are the files in /boot/efi/EFI/xen$ ls initrd.img-3.13.0-24-generic xen-4.4.1.cfg xen-4.4.1.gz vmlinuz-3.13.0-24-generic.efi.signed xen-4.4.1.efi And the content of xen.4.4.1.cfg [global] default=sle11sp2 [sle11sp2] options=console=vga,com1 com1=57600 loglvl=all noreboot kernel=xen-4.4.1.efi root=/dev/sda1 ro console=tty1 console=hvc0 ramdisk=xen-4.4.1.gz When I run "efibootmgr -w -L Xen -l "\EFI\Xen\xen.efi" -c", it shows: $ efibootmgr -w -L Xen -l "\EFI\Xen\xen-4.4.1.efi" -c Fatal: Couldn't open either sysfs or procfs directories for accessing EFI variables. Try 'modprobe efivars' as root. I tried modprobe efiwars and still generate the same error. Directly reboot the system from BIOS doesn't success. Any suggestions?
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