Re: [nVMX] With 3.20.0-0.rc0.git5.1 on L0, booting L2 guest results in L1 *rebooting*

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On Thu, Feb 19, 2015 at 10:10:11PM +0100, Kashyap Chamarthy wrote:
> On Thu, Feb 19, 2015 at 05:02:22PM +0100, Radim Krčmář wrote:

[. . .]

> > Can you try if the following patch works?
> 
> Sure, will test a Kernel built with the below patch and report back.

Hmm, I'm stuck with a meta issue.

I checked out the KVM tree[1] on L0, applied your patch and built[*] the
Kernel, and booted into it. Boot fails and drops into a dracut shell on
because:

 . . .
 dracut-initqueue[3045]: Warning: Cancelling resume operation. Device not found.
 [ TIME ] Timed out waiting for device
 dev-ma...per910\x2d\x2d02\x2droot.device.
 [DEPEND] Dependency failed for /sysroot.
 [DEPEND] Dependency failed for Initrd Root File SyWarning:
 /dev/disk/by-uuid/4ccddb2d-4d63-4fce-b4d4-9b2f119a30cc does not exist
 . . .

I saved the report from /run/initramfs/rdsosreport.txt here[2].


Then, I did another test:

  - Rebooted into Kernel 3.20.0-0.rc0.git5.1.fc23.x86_64 on physical
    host (L0).
  - In L1, checked out the KVM tree, applied your patch and built
    Kernel[*] from the current KVM tree and booted into the newly built
    one, here too, I'm thrown into a dracut shell


[1] git://git.kernel.org/pub/scm/virt/kvm/kvm.git
[2] https://kashyapc.fedorapeople.org/temp/kernel-boot-failure.txt

[*] Exactly, I built it this way:

  # Clone the tree
  $ git://git.kernel.org/pub/scm/virt/kvm/kvm.git

  # Make a new branch:
  $ git checkout -b nvmx_test
  $ git describe
  warning: tag 'for-linus' is really 'kvm-3.19-1' here
  for-linus-14459-g49776d5
  
  # Make a config file
  $ make defconfig
  
  # Compile
  $ make -j4 && make bzImage && make modules
  
  # Install
  $ sudo -i
  $ make modules_install && make install

-- 
/kashyap
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