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hypervisor, vmm: Add support for KVM_SEV_SNP_LAUNCH_UPDATE

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Implement the KVM_SEV_SNP_LAUNCH_UPDATE ioctl.

Extend Vm::import_isolated_pages() with a uaddrs parameter carrying
host virtual addresses, which KVM needs, unlike MSHV. Compute uaddrs
from guest memory mappings in the IGVM loader.

Add KVM_SEV_SNP_LAUNCH_UPDATE to the seccomp allowlist.

Co-authored-by: Keith Adler <kadler@cloudflare.com>
Signed-off-by: Keith Adler <kadler@cloudflare.com>
Co-authored-by: Alex Orozco <aorozco@google.com>
Signed-off-by: Alex Orozco <aorozco@google.com>
Signed-off-by: Ruben Hakobyan <hruben@meta.com>
This commit is contained in:
Ruben Hakobyan
2026-04-07 16:43:32 -07:00
committed by Rob Bradford
parent 2e004521e0
commit 24db5e1efd
6 changed files with 104 additions and 0 deletions
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hypervisor/src/mshv/mod.rs
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@@ -2272,6 +2272,7 @@ impl vm::Vm for MshvVm {
page_type: u32,
page_size: u32,
pages: &[u64],
_uaddrs: &[u64],
) -> vm::Result<()> {
debug_assert!(page_size == hv_isolated_page_size_HV_ISOLATED_PAGE_SIZE_4KB);
if pages.is_empty() {