Re: [RFC PATCH V3 00/16] x86/hyperv/sev: Add AMD sev-snp enlightened guest support on hyperv

From: Tianyu Lan
Date: Sat Feb 18 2023 - 02:16:21 EST


On 2/17/2023 8:47 PM, Gupta, Pankaj wrote:
On 2/9/2023 12:36 PM, Gupta, Pankaj wrote:
Hi Tianyu,

This patchset is to add AMD sev-snp enlightened guest
support on hyperv. Hyperv uses Linux direct boot mode
to boot up Linux kernel and so it needs to pvalidate
system memory by itself.

In hyperv case, there is no boot loader and so cc blob
is prepared by hypervisor. In this series, hypervisor
set the cc blob address directly into boot parameter
of Linux kernel. If the magic number on cc blob address
is valid, kernel will read cc blob.

Shared memory between guests and hypervisor should be
decrypted and zero memory after decrypt memory. The data
in the target address. It maybe smearedto avoid smearing
data.

Introduce #HV exception support in AMD sev snp code and
#HV handler.

I am interested to test the Linux guest #HV exception handling (patches 12-16 in this series) for the restricted interrupt injection with the Linux/KVM host.

Do you have a git tree which or any base commit on which
I can use to apply these patches?

Never mind. I could apply the patches 12-16 on master (except minor tweak in patch 14). Now, will try to test.


Hi Pankaj:
Sorry. I missed your first mail. Please let me know any issue son KVM side if available。Thanks in advance.