From 9f8aeacd3dee91b1b1c2a90dcf86c9ad92cc1a9d Mon Sep 17 00:00:00 2001 From: Jinank Jain Date: Tue, 13 Feb 2024 08:06:07 +0530 Subject: [PATCH] vmm: Force enable IOMMU incase of SEV-SNP guest In case of SEV-SNP guest devices use sw-iotlb to gain access guest memory for DMA. For that F_IOMMU/F_ACCESS_PLATFORM must be exposed in the feature set of virtio devices. Signed-off-by: Jinank Jain Signed-off-by: Muminul Islam --- vmm/src/vm.rs | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/vmm/src/vm.rs b/vmm/src/vm.rs index a3ce3561e..43a04bfec 100644 --- a/vmm/src/vm.rs +++ b/vmm/src/vm.rs @@ -511,7 +511,9 @@ impl Vm { let sev_snp_enabled = config.lock().unwrap().is_sev_snp_enabled(); #[cfg(feature = "tdx")] let force_iommu = tdx_enabled; - #[cfg(not(feature = "tdx"))] + #[cfg(feature = "sev_snp")] + let force_iommu = sev_snp_enabled; + #[cfg(not(any(feature = "tdx", feature = "sev_snp")))] let force_iommu = false; #[cfg(feature = "guest_debug")]