I am wondering whether it is possible to reserve a particular physical page in the kernel.
The GFP pages can start from _any_ location, and i cannot find a way to specify a starting pfn.
I need a few dozen pages to store a bitmap starting at a particular physical page frame number.
Perhaps i am trying to do this wrong? I am trying to establish a (one-way) communication between KVM and a guest VM, by assuming that if KVM knows the physical address in the VM , it can access that bitmap.
Thanks !
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