On Tue, Jul 26, 2016 at 12:26:47PM -0600, Trammell Hudson wrote: > [...] > In better news, I have figured out why Xen won't start from > kexec on a Linux CoreBoot payload. Sometime between 3.1.0 > and 3.1.3 they added numerous dependencies on the BIOS and > EBDA structures for initializing the VGA console as well as > figuring out where to stash pre-boot data. > > I forward ported the 3.1.0 xen/drivers/video/vga.c to 4.6.3 > and modified xen/arch/x86/boot/trampoline.S to not make any > real mode calls, and modified xen/arch/x86/boot/head.S to > use the Multiboot lower memory pointer for the trampoline > segment.
I've posted patches to the Xen mailing list, but don't have high hopes that it will be accepted until someone hits the bug more than once per decade: https://lists.xenproject.org/archives/html/xen-devel/2016-08/msg01195.html The vga changes might not be required, only the EBDA ones, since Qubes doesn't use the Xen VGA console. I haven't rebuilt that part of the system recently to test it. I've also submitted an additional patch to make the builds more reproducible, which will hopefully show up soon: https://lists.xenproject.org/archives/html/xen-devel/2016-08/msg01301.html -- Trammell -- You received this message because you are subscribed to the Google Groups "qubes-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-devel/20160812132127.GO16348%40chishio.swcp.com. For more options, visit https://groups.google.com/d/optout.
