Hi all ,
I find that it needs some hacks to run mini-os under xen-3.2 ,
followings are what I have done:
1, mini-os/arch/x86/x86_32.S , change the __xen_guest config :
from
.ascii ",VIRT_BASE=0x0" /* &_text from minios_x86_32.lds
*/
.ascii ",ELF_PADDR_OFFSET=0x0"
to
.ascii ",VIRT_BASE=0x0C0000000" /* &_text from minios_x86_32.lds
*/
.ascii ",ELF_PADDR_OFFSET=0x0C0000000"
because if I don''t change VIRT_BASE xen will report "Initial
loading
isn''t allowed to lowest 1GB of memory"
2, mini-os/arch/x86/minios-x86_32.lds
from
. = 0x0;
to
. = 0x0C0000000;
so far , I can run mini-os to the banner and got a page fault:
Bootstraping ...
Xen Minimal OS!
Page fault at linear address 15555c08, eip c000cf61, code 0
(XEN) Domain 0 crashed
any idea ? Thank you very much
yushang
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Hello, 余上, le Tue 22 Jan 2008 17:23:18 +0800, a écrit :> .ascii ",VIRT_BASE=0x0C0000000" /* &_text from minios_x86_32.lds */ > .ascii ",ELF_PADDR_OFFSET=0x0C0000000" > because if I don''t change VIRT_BASE xen will report "Initial loading > isn''t allowed to lowest 1GB of memory"Oh, you seem to be starting mini-os as Domain-0... Is that supposed to be supported?> so far , I can run mini-os to the banner and got a page fault: > Bootstraping ... > Xen Minimal OS! > Page fault at linear address 15555c08, eip c000cf61, code 0 > (XEN) Domain 0 crashed > > any idea ? Thank you very muchMmm, this is Xen-unstable, not Xen-3.2, isn''t it? Well, yes, the code I got added was supposing _text to be 0, I''ve submitted a fix for that. Samuel _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
You mean I can't run mini-os in dom0 ? But for learning purpose I really want to . Maybe I need some more hacks ? By the way , I'm using xen-3.2 (Xen 3.2 official source distribution tarball) 2008/1/22, Samuel Thibault <samuel.thibault@eu.citrix.com>:> Hello, > > 余上, le Tue 22 Jan 2008 17:23:18 +0800, a écrit : > > .ascii ",VIRT_BASE=0x0C0000000" /* &_text from minios_x86_32.lds */ > > .ascii ",ELF_PADDR_OFFSET=0x0C0000000" > > because if I don't change VIRT_BASE xen will report "Initial loading > > isn't allowed to lowest 1GB of memory" > > Oh, you seem to be starting mini-os as Domain-0... Is that supposed to > be supported? > > > so far , I can run mini-os to the banner and got a page fault: > > Bootstraping ... > > Xen Minimal OS! > > Page fault at linear address 15555c08, eip c000cf61, code 0 > > (XEN) Domain 0 crashed > > > > any idea ? Thank you very much > > Mmm, this is Xen-unstable, not Xen-3.2, isn't it? Well, yes, the code I > got added was supposing _text to be 0, I've submitted a fix for that. > > Samuel >_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
余上, le Tue 22 Jan 2008 20:16:54 +0800, a écrit :> You mean I can''t run mini-os in dom0 ? > But for learning purpose I really want to .Well, I don''t really see the use. mini-os completely relies on backends and is unable to drive any real hardware. Why not running e.g. a Linux as dom0 and then run mini-os as domU? That makes a much faster testing environment.> Maybe I need some more hacks ?Well, the hack you propose is indeed necessary, but I doubt it should really make it in upstream Samuel _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel