On 08.11.23 12:17, Nicolas Saenz Julienne wrote:
Introduce the following memory attributes: - KVM_MEMORY_ATTRIBUTE_READ - KVM_MEMORY_ATTRIBUTE_WRITE - KVM_MEMORY_ATTRIBUTE_EXECUTE - KVM_MEMORY_ATTRIBUTE_NO_ACCESS Note that NO_ACCESS is necessary in order to make a distinction between the lack of attributes for a gfn, which defaults to the memory protections of the backing memory, versus explicitly prohibiting any access to that gfn.
If we negate the attributes (no read, no write, no execute), we can keep 0 == default and 0b111 becomes "no access".
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