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Re: [Xen-devel] Xen-4.1-unstable hypervisor booting error

To: Boris Derzhavets <bderzhavets@xxxxxxxxx>
Subject: Re: [Xen-devel] Xen-4.1-unstable hypervisor booting error
From: Michal Novotny <minovotn@xxxxxxxxxx>
Date: Mon, 27 Sep 2010 12:46:46 +0200
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Thanks a lot Boris, adding dom0_mem setting to 1G (1024M respectively) made it working fine so I guess there's a wrong default setting for dom0_mem, at least for x86_64 architecture.

Thanks again Boris!
Michal

On 09/27/2010 11:05 AM, Boris Derzhavets wrote:
Could you try:-

/boot/xen.gz  dom0_mem=1024M
. . . . . . . . . . .

Boris.
P.S. I had the same issue.


--- On *Mon, 9/27/10, Michal Novotny /<minovotn@xxxxxxxxxx>/* wrote:


    From: Michal Novotny <minovotn@xxxxxxxxxx>
    Subject: [Xen-devel] Xen-4.1-unstable hypervisor booting error
    To: "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>
    Date: Monday, September 27, 2010, 3:47 AM

    Hi,
    I've installed latest PVops kernel 2.6.32.21 (upgraded from
    2.6.32.15 using the very same kernel build configuration - i.e.
    copied the config-2.6.32.15 file to the kernel source directory)
    and I can boot without hypervisor (using the standard
    kernel/initrd directives in grub) but not with the hypervisor
    since it fails.

    Call trace is:
    [ <ffffffff8100faf2> ] ? check_events+0x12/0x20
    [ <ffffffff8108f94f> ] ? lock_acquire+0xe3/0xf2
    [ <ffffffff812cd2f3> ] ? balloon_process+0x0/0x555
    [ <ffffffff8107793f> ] worker_thread+0x1b2/0x2b1
    [ <ffffffff810778e6> ] ? worker_thread+0x159/0x2b1
    [ <ffffffff8107bf13> ] ? autoremove_wake_function+0x0/0x3d
    [ <ffffffff8107778d> ] ? worker_thread+0x0/0x2b1
    [ <ffffffff8107bcc1> ] kthread+0x6e/0x76
    [ <ffffffff81013eea> ] child_rip+0xa/0x20
    [ <ffffffff81013850> ] ? restore_args+0x0/0x30
    [ <ffffffff8107bdb6> ] ? kthreadd+x0ed/0x10f
    [ <ffffffff8100fadf> ] ? xen_restore_fl_direct_end+0x0/0x1
    [ <ffffffff81013ee0> ] ? child_rip+0x0/0x20

    Code: 49 c1 fd 03 4c 8b 34 d5 e0 a6 61 82 4c 0f af e8 80 3d 3b 65
    5a 00 00 75 0d 4c 89 ef e8 32 fa d3 ff 48 ff c0 75 05 45 31 ff eb
    5a <0f> 0b eb fe 4c 89 f6 48 89 df e8 4b 03 d4 ff 48 3b 1d 97 f7 1c

    RIP [ <ffffffff812cd49b> ] balloon_process+0x1a8/0x555
    RSP [ <ffff8801e9435d50> ]
    --- [ end trace e93713a9d40cd06c ] ---
    events/0 used greatest stack depth: 4664 bytes left

    And the host is stuck and can't boot.

    Was it OK to use the config from 2.6.32.15 for 2.6.32.21 build or
    any pointers what may be going on? The kernel/system is x86_64
    system running on RHEL-5 with the PVops kernel now but as I said,
    it can't boot with the hypervisor but everything is fine (except
    Xen) when booting without the hypervisor.

    Thanks,
    Michal

    -- Michal Novotny<minovotn@xxxxxxxxxx
    </mc/compose?to=minovotn@xxxxxxxxxx>>, RHCE
    Virtualization Team (xen userspace), Red Hat


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--
Michal Novotny<minovotn@xxxxxxxxxx>, RHCE
Virtualization Team (xen userspace), Red Hat


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