On Mon, Aug 17, 2015 at 09:59:20AM +0800, harry wrote: > Hi, > > > I want to read the value of some physical address in HYP mode. But maybe > there isn't any interface to achieve this. I hope to get some ideas to > achieve this. >
If I understand your question correctly, you simply have to map the physical address into hyp mode's virtual address space and read from that address. -Christoffer > > And now I have a simple idea, but I don't know if it is possible. When the > HYP mode is init, we create a mapping from one special virtual address to > some physical address. And map the va to HYP mode. When we want to read the > value of some PA, we modify the page table to let the special VA map to the > PA, then we read the special VA and get the value of the PA. Because I only > start to research on the KVM, so I am not sure if this can work. I hope to > get help to achieve this. > > > Thanks and regards, > Harry > _______________________________________________ > kvmarm mailing list > kvmarm@lists.cs.columbia.edu > https://lists.cs.columbia.edu/mailman/listinfo/kvmarm _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
