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2e62081bec
Remove the stale MSHV-only wording now that the docs and CVM test path cover KVM SEV-SNP with IGVM stage0 and fw_cfg [0, 1]. [0]: https://github.com/cloud-hypervisor/cloud-hypervisor/pull/7942 [1]: https://github.com/cloud-hypervisor/cloud-hypervisor/pull/8347 On-behalf-of: SAP philipp.schuster@sap.com Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
45 lines
1.4 KiB
Markdown
45 lines
1.4 KiB
Markdown
# AMD SEV-SNP
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AMD Secure Encrypted Virtualization & Secure Nested Paging (SEV-SNP) is an AMD
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technology designed to add strong memory integrity protection to help prevent
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malicious hypervisor-based attacks like data replay, memory-remapping and more
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in order to create an isolated execution environment. Here are some useful
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links:
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- [SNP Homepage](https://docs.amd.com/v/u/en-US/amd-secure-encrypted-virtualization-solution-brief):
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more information about SEV-SNP technical aspects, design and specification.
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## Cloud Hypervisor support
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A machine with AMD SEV-SNP support which is enabled in the BIOS is required.
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On the Cloud Hypervisor side, all you need is to build the project with the
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`sev_snp` feature enabled. This enables the MSHV and IGVM support that is
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needed by the default SEV-SNP build:
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```bash
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cargo build --no-default-features --features "sev_snp"
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```
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**Note**
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Please note that `sev_snp` cannot be enabled in conjunction with the `tdx` feature flag.
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SEV-SNP is also supported on KVM with an IGVM stage0 image and a guest kernel
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provided through `fw_cfg`. Build that configuration with:
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```bash
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cargo build --no-default-features --features "kvm,igvm,sev_snp,fw_cfg"
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```
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You can run a SEV-SNP VM using the following command:
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```bash
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./cloud-hypervisor \
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--platform sev_snp=on \
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--cpus boot=1 \
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--memory size=1G \
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--disk path=ubuntu.img
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```
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For more information related to Microsoft Hypervisor, please see [mshv.md](mshv.md).
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