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igvmbuilder: set VTL2 protection flag where required #573

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Dec 16, 2024
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igvmbuilder: set VTL2 protection flag where required #573

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23 changes: 17 additions & 6 deletions igvmbuilder/src/igvm_builder.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -313,12 +313,23 @@ impl IgvmBuilder {
}

// Describe the kernel RAM region
self.directives.push(IgvmDirectiveHeader::RequiredMemory {
gpa: param_block.kernel_base,
compatibility_mask: COMPATIBILITY_MASK.get(),
number_of_bytes: param_block.kernel_size,
vtl2_protectable: false,
});
if COMPATIBILITY_MASK.contains(!VSM_COMPATIBILITY_MASK) {
self.directives.push(IgvmDirectiveHeader::RequiredMemory {
gpa: param_block.kernel_base,
compatibility_mask: COMPATIBILITY_MASK.get() & !VSM_COMPATIBILITY_MASK,
number_of_bytes: param_block.kernel_size,
vtl2_protectable: false,
});
}

if COMPATIBILITY_MASK.contains(VSM_COMPATIBILITY_MASK) {
self.directives.push(IgvmDirectiveHeader::RequiredMemory {
gpa: param_block.kernel_base,
compatibility_mask: VSM_COMPATIBILITY_MASK,
number_of_bytes: param_block.kernel_size,
vtl2_protectable: true,
});
}

// Create the two parameter areas for memory map and general parameters.
self.directives.push(IgvmDirectiveHeader::ParameterArea {
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