Methods, systems and apparatus to capture error conditions in lightweight virtual machine managers
AssigneeIntel Corporation
InventorsBing Zhu, Peng Zou, Madhukar Tallam, Luhai Chen, Kai Wang
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Abstract
Methods and apparatus are disclosed to capture error conditions in lightweight virtual machine managers. A disclosed example method includes defining a shared memory structure between the VMM and a virtual machine (VM), when the VM is spawned by the VMM, installing an abort handler on the VM associated with a vector value, in response to detecting an error, transferring VMM state information to the shared memory structure, and invoking the abort handler on the VM to transfer contents of the shared memory structure to a non-volatile memory.
Claims29
A method to capture error information from a virtual machine manager (VMM), comprising:
- defining a shared memory structure between the VMM and a virtual machine (VM);
- when the VM is spawned by the VMM, installing an abort handler on the VM associated with a vector value;
- in response to detecting an error, transferring VMM state information to the shared memory structure;
- and
- invoking the abort handler on the VM to transfer contents of the shared memory structure to a non-volatile memory.
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An apparatus to capture error information from a virtual machine manager (VMM), comprising:
- a host storage manager to define a shared memory structure between the VMM and a virtual machine (VM);
- a guest abort handler to install an abort handler on the VM associated with a vector value when the VM is spawned by the VMM;
- a host error handler to transfer VMM state information to the shared memory structure in response to detecting an error;
- and
- an exception event injector to invoke the guest abort handler on the VM to transfer contents of the shared memory structure to a non-volatile memory.
A tangible machine readable storage medium comprising instructions stored thereon that, when executed, cause a machine to, at least:
- define a shared memory structure between the VMM and a virtual machine (VM);
- when the VM is spawned by the VMM, install an abort handler on the VM associated with a vector value;
- in response to detecting an error, transfer VMM state information to the shared memory structure;
- and
- invoke the abort handler on the VM to transfer contents of the shared memory structure to a non-volatile memory.
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Dependencies are inferred from the claim text.