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Re: [Qemu-devel] [PATCH v2 00/13] Add SEV guest live migration support

From: Singh, Brijesh
Subject: Re: [Qemu-devel] [PATCH v2 00/13] Add SEV guest live migration support
Date: Thu, 11 Jul 2019 19:44:46 +0000

On 7/11/19 4:59 AM, Dr. David Alan Gilbert wrote:
> * Singh, Brijesh (address@hidden) wrote:
>> AMD SEV encrypts the memory of VMs and because this encryption is done using
>> an address tweak, the hypervisor will not be able to simply copy ciphertext
>> between machines to migrate a VM. Instead the AMD SEV Key Management API
>> provides a set of functions which the hypervisor can use to package a
>> guest encrypted pages for migration, while maintaining the confidentiality
>> provided by AMD SEV.
>> The patch series add the support required in Qemu to perform the SEV
>> guest live migration. Before initiating the live migration a user
>> should use newly added 'migrate-set-sev-info' command to pass the
>> target machines certificate chain. See the docs/amd-memory-encryption.txt
>> for further details.
> Note the two patchew errors:
>    a) Mostly formatting; 80 char lines, /* comments etc - you should
>       check your patches using scripts/checkpatch.pl  to get rid of that
>       lot.
>    b) There are some build errors on non-x86 softmmu builds.

Dave, thanks for reviews. I will fix these in next version.

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