Thanks for your reply. I've already changed to boot with the xen.efi directly without grub2. Now I can see all the cpu cores, but I can't use the mouse or keyboard. What's more, the memory seems to be problematic too. 'xl dmesg' shows : (XEN) Unknown cachability for MFNs 0x80000-0x8ffff(XEN) Unknown cachability for MFNs 0xfeda8-0xfedab(XEN) Initial low memory virq threshold set at 0x4000 pages.(XEN) HVM1 restore: bad CR4 0x1526f0(XEN) HVM1 restore: failed to load entry 2/0(d4) Relocating guest memory for lowmem MMIO space disabled(d4) No RAM in high memory; setting high_mem resource base to 100000000 Even though finally the domain 4 booted, using libxc api xc_domain_maximum_gpfn(xen->xchandle, xen->domainid) cannot get the max_gpfn.
> Date: Mon, 30 Nov 2015 03:31:13 -0700 > From: jbeul...@suse.com > To: quizy_jo...@outlook.com > CC: xen-devel@lists.xen.org > Subject: Re: [Xen-devel] boot xen use legacy bios > > >>> On 29.11.15 at 12:26, <quizy_jo...@outlook.com> wrote: > > 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? > > For BIOSes that don't have a Legacy Support Module, booting in > non-EFI mode just won't work. See my other reply. For BIOSes > that do have an LSM, you may need to find the setup option to > turn it on if it's not on by default. > > But generally questions like this belong on xen-users, not xen-devel. > > Jan > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel
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