[CentOS-virt] Centos 6 2.6.32-696.18.7.el6.x86_64 does not boot in Xen PV mode

I can confirm the issue with 2.6.32-696.18.7.el6.x86_64, but mine looks 
alittle different... Maybe because i'm using pvgrub.

============= Init TPM Front ================
Tpmfront:Error Unable to read device/vtpm/0/backend-id during tpmfront 
initialization! error = ENOENT
Tpmfront:Info Shutting down tpmfront
close blk: backend=/local/domain/0/backend/vbd/14/51712 
node=device/vbd/51712
close blk: backend=/local/domain/0/backend/vbd/14/51728 
node=device/vbd/51728
[root at devhost1]#

--
Shaun Reitan
NDCHost.com

------ Original Message ------
From: "Sarah Newman" <srn at prgmr.com>
To: "Discussion about the virtualization on CentOS" 
<centos-virt at centos.org>
Sent: 2018-01-05 12:39:21 AM
Subject: [CentOS-virt] Centos 6 2.6.32-696.18.7.el6.x86_64 does not boot 
in Xen PV mode

>Problems start before any of the kaiser code executes, though it could 
>still be related to CONFIG_KAISER since that has effects beyond 
>kaiser.c.
>
>---
>(early) Initializing cgroup subsys cpuset
>(early) Initializing cgroup subsys cpu
>(early) Linux version 2.6.32-696.18.7.el6.x86_64 
>(mockbuild at c1bl.rdu2.centos.org) (gcc version 4.4.7 20120313 (Red Hat 
>4.4.7-18) (GCC) ) #1 SMP Thu
>Jan 4 17:31:22 UTC 2018
>(early) Command line: ro console=hvc0 rootflags=barrier=0 
>crashkernel=auto SYSFONT=latarcyrheb-sun16 LANG=en_US.UTF-8 KEYTABLE=us 
>earlyprintk=xen
>(early) KERNEL supported cpus:
>(early)   Intel GenuineIntel
>(early)   AMD AuthenticAMD
>(early)   Centaur CentaurHauls
>(early) 1 multicall(s) failed: cpu 0
>(early) Pid: 0, comm: swapper Not tainted 2.6.32-696.18.7.el6.x86_64 #1
>(early) Call Trace:
>(early)  [<ffffffff81004843>] ? xen_mc_flush+0x1c3/0x250
>(early)  [<ffffffff81006b9e>] ? xen_extend_mmu_update+0xde/0x1b0
>(early)  [<ffffffff81006fcd>] ? xen_set_pmd_hyper+0x9d/0xc0
>(early)  [<ffffffff81c5e8ac>] ? early_ioremap_init+0x98/0x133
>(early)  [<ffffffff81c45221>] ? setup_arch+0x40/0xca6
>(early)  [<ffffffff8107e0ee>] ? vprintk_default+0xe/0x10
>(early)  [<ffffffff8154b0cd>] ? printk+0x4f/0x52
>(early)  [<ffffffff81c3fdda>] ? start_kernel+0xdc/0x43b
>(early)  [<ffffffff81c47eb0>] ? reserve_early+0x30/0x39
>(early)  [<ffffffff81c3f33a>] ? x86_64_start_reservations+0x125/0x129
>(early)  [<ffffffff81c4309c>] ? xen_start_kernel+0x4fe/0x505
>(early) ------------[ cut here ]------------
>(early) WARNING: at arch/x86/xen/multicalls.c:182 
>xen_mc_flush+0x21f/0x250() (Not tainted)
>(early) Modules linked in:
>(early) Pid: 0, comm: swapper Not tainted 2.6.32-696.18.7.el6.x86_64 #1
>(early) Call Trace:
>(early)  [<ffffffff8107ce81>] ? warn_slowpath_common+0x91/0xe0
>(early)  [<ffffffff8100762f>] ? 
>__raw_callee_save_xen_restore_fl+0x11/0x1e
>(early)  [<ffffffff8107ceea>] ? warn_slowpath_null+0x1a/0x20
>(early)  [<ffffffff8100489f>] ? xen_mc_flush+0x21f/0x250
>(early)  [<ffffffff81006b9e>] ? xen_extend_mmu_update+0xde/0x1b0
>(early)  [<ffffffff81006b9e>] ? xen_extend_mmu_update+0xde/0x1b0
>(early)  [<ffffffff81006fcd>] ? xen_set_pmd_hyper+0x9d/0xc0
>(early)  [<ffffffff81c5e8ac>] ? early_ioremap_init+0x98/0x133
>(early)  [<ffffffff81c45221>] ? setup_arch+0x40/0xca6
>(early)  [<ffffffff8107e0ee>] ? vprintk_default+0xe/0x10
>(early)  [<ffffffff8154b0cd>] ? printk+0x4f/0x52
>(early)  [<ffffffff81c3fdda>] ? start_kernel+0xdc/0x43b
>(early)  [<ffffffff81c47eb0>] ? reserve_early+0x30/0x39
>(early)  [<ffffffff81c3f33a>] ? x86_64_start_reservations+0x125/0x129
>(early)  [<ffffffff81c4309c>] ? xen_start_kernel+0x4fe/0x505
>(early) ---[ end trace a7919e7f17c0a725 ]---
>(early) ACPI in unprivileged domain disabled
>(early) released 0 pages of unused memory
>(early) BIOS-provided physical RAM map:
>(early)  Xen: 0000000000000000 - 00000000000a0000 (usable)
>(early)  Xen: 00000000000a0000 - 0000000000100000 (reserved)
>(early)  Xen: 0000000000100000 - 0000000020000000 (usable)
>(early) bootconsole [xenboot0] enabled
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