Re: [Xen-devel] kexec and xen/arch/x86/boot/head.S trampoline

2018-02-28 Thread Trammell Hudson
On Wed, Feb 28, 2018 at 03:07:41PM +, Andrew Cooper wrote: > On 28/02/18 14:08, Trammell Hudson wrote: > > kexec allocates a 1 page segment at 0x0 and memsets most of it to zero, > > wiping out coreboot's EBDA structure, which xen's head.S consulted to > > allocate the trampoline. Xen's code l

Re: [Xen-devel] kexec and xen/arch/x86/boot/head.S trampoline

2018-02-28 Thread Andrew Cooper
On 28/02/18 14:08, Trammell Hudson wrote: > This is a belated followup to my post in 2016, which was a followup to a > post by Ward Vandewege in 2008 about problems introduced by Xen 3.1.3's > changes in the trampoline allocation code: > > https://lists.xenproject.org/archives/html/xen-devel/2016-0