Boot FreeBSD 10 in HVM mode under Xen?

[Sydney Meyer]

If you have access to the hypervisor, you could also set "xen_platform_pci=0" in the DomU's config.

> On 31 Jul 2015, at 16:59, Karl Pielorz <kpielorz_lst at tdx.co.uk> wrote:
> 
> 
> 
> --On 31 July 2015 16:17 +0200 Roger Pau Monné <roger.pau at citrix.com> wrote:
> 
>> This is a bug then. You should be able to boot without XENHVM/xenpci,
>> and get a pure HVM guest with no PV devices at all.
> 
> After removing XENHVM and xenpci - booting a FreeBSD 10.1-p8 AMD64 kernel under XenServer 6.5 gets the output below (first few lines scroll off the console in XenServer).
> 
> "
> cpuid = 0; apic id = 00
> instruction pointer     = 0x20:0xffffffff80d96af9
> stack pointer           = 0x28:0xffffffff8191bbe0
> frame pointer           = 0x28:0xffffffff8191bbf0
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                       = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags        = interrupt enabled, IOPL = 0
> current process         = 0 (swapper)
> trap number             = 9
> panic: general protection fault
> cpuid = 0
> KDB: strack backtrace:
> #0 0xffffffff80946ae0 at kdb_backtrace+0x60
> #1 0xffffffff8090bc05 at panic+0x155
> #2 0xffffffff80d02aef at trap_fatal+0x38f
> #3 0xffffffff80d0274c at trap+0x75c
> #4 0xffffffff80ce8432 at calltrap+0x8
> #5 0xffffffff80918e1f at tc_init+0x23f
> #6 0xffffffff80d967a1 at hv_vmbus_init+0x191
> #7 0xffffffff80d9735e at vmbus_bus_init+0x1e
> #8 0xffffffff808bad38 at mi_startup+0x108
> #9 0xffffffff802d9f0c at btext+0x2c
> "
> 
> 
> I'll try rebuilding it with debugger support (it's been a while).
> 
> Cheers,
> 
> -Karl
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