While experimenting/testing various kernel versions I discovered that trying to boot a Haswell based hosts will always crash when booting as Xen dom0 (Xen-4.4.1). The same crash happens since v3.19-rc1 and still does happen with v3.19-rc7. A bare metal boot is having no issues and also an Opteron based host is having no issues (dom0 and bare metal). Could be a table that the other host does not have and since its only happening in dom0 maybe some cpu capability that needs to be passed on? [ 2.108038] ACPI: Core revision 20141107 [ 2.108153] ACPI Warning: Unsupported module-level executable opcode 0x91 at table offset 0x002B (20141107/psloop-225) [ 2.108264] ACPI Warning: Unsupported module-level executable opcode 0x91 at table offset 0x0033 (20141107/psloop-225) [ 2.108375] ACPI Warning: Unsupported module-level executable opcode 0x95 at table offset 0x0038 (20141107/psloop-225) [ 2.108489] ACPI Warning: Unsupported module-level executable opcode 0x95 at table offset 0x0041 (20141107/psloop-225) [ 2.108613] ACPI Warning: Unsupported module-level executable opcode 0x7D at table offset 0x040D (20141107/psloop-225) [ 2.108751] BUG: unable to handle kernel paging request at ffffc90000ee74e0 [ 2.108835] IP: [<ffffffff814573db>] acpi_ps_peek_opcode+0xd/0x1f [ 2.108902] PGD 1f4be067 PUD 1f4bd067 PMD 1488f067 PTE 0 [ 2.109018] Oops: 0000 [#1] SMP [ 2.109094] Modules linked in: [ 2.109153] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.19.0-031900rc7-generi c #201502020035 [ 2.109220] Hardware name: Intel Corporation Shark Bay Client platform/Flathe ad Creek Crb, BIOS HSWLPTU1.86C.0109.R03.1301282055 01/28/2013 [ 2.109295] task: ffffffff81c1c500 ti: ffffffff81c00000 task.ti: ffffffff81c0 0000 [ 2.109360] RIP: e030:[<ffffffff814573db>] [<ffffffff814573db>] acpi_ps_peek _opcode+0xd/0x1f [ 2.109445] RSP: e02b:ffffffff81c03ce8 EFLAGS: 00010283 [ 2.109490] RAX: 000000000000000c RBX: ffff880014887000 RCX: ffffffff81c03d50 [ 2.109539] RDX: ffffc90000ee74e0 RSI: ffff880014887030 RDI: ffff880014887030 [ 2.109587] RBP: ffffffff81c03ce8 R08: ffffea0000522600 R09: ffffffff81432c4f [ 2.109635] R10: ffff880014899090 R11: 00000000000000ba R12: ffff880014887030 [ 2.109684] R13: ffff880014887000 R14: ffffffff81c03d50 R15: 000000000000000d [ 2.109735] FS: 0000000000000000(0000) GS:ffff880018c00000(0000) knlGS:00000 00000000000 [ 2.109836] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.109881] CR2: ffffc90000ee74e0 CR3: 0000000001c15000 CR4: 0000000000042660 [ 2.109930] Stack: [ 2.109968] ffffffff81c03d38 ffffffff81456537 ffffffff81c03d28 ffffffff81457 a40 [ 2.110104] ffff880014887000 ffff880014887000 ffff8800148990c0 ffffc90000ee7 4e0 [ 2.110238] ffff880014887030 0000000000000000 ffffffff81c03d78 ffffffff81456 760 [ 2.110373] Call Trace: [ 2.110413] [<ffffffff81456537>] acpi_ps_get_next_arg+0x114/0x1f9 [ 2.110461] [<ffffffff81457a40>] ? acpi_ps_pop_scope+0x54/0x72 [ 2.110508] [<ffffffff81456760>] acpi_ps_get_arguments+0x91/0x228 [ 2.110555] [<ffffffff81456ad2>] acpi_ps_parse_loop+0x1db/0x311 [ 2.110602] [<ffffffff81457705>] acpi_ps_parse_aml+0x96/0x275 [ 2.110649] [<ffffffff8145322f>] acpi_ns_one_complete_parse+0xf7/0x114 [ 2.110698] [<ffffffff817d149a>] ? _raw_spin_lock_irqsave+0x1a/0x60 [ 2.110746] [<ffffffff8145326c>] acpi_ns_parse_table+0x20/0x38 [ 2.110792] [<ffffffff81452c20>] acpi_ns_load_table+0x4c/0x90 [ 2.110840] [<ffffffff817c50b5>] acpi_tb_load_namespace+0xa6/0x14a [ 2.110889] [<ffffffff81d83269>] acpi_load_tables+0xc/0x35 [ 2.110935] [<ffffffff81454bf6>] ? acpi_ns_get_node+0xb7/0xc9 [ 2.110982] [<ffffffff81d825cf>] acpi_early_init+0x73/0x105 [ 2.111029] [<ffffffff81d3b083>] start_kernel+0x348/0x3f0 [ 2.111075] [<ffffffff81d3abcd>] ? set_init_arg+0x56/0x56 [ 2.111121] [<ffffffff81d3a5f8>] x86_64_start_reservations+0x2a/0x2c [ 2.111169] [<ffffffff81d3e88c>] xen_start_kernel+0x4f5/0x4f7 [ 2.111215] Code: 8a 87 60 05 87 81 5d c3 e8 73 cc 37 00 55 81 ff 00 01 00 00 19 c0 48 89 e5 83 c0 02 5d c3 e8 5d cc 3
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