"Michael S. Tsirkin" <mst@xxxxxxxxxxxxxx> writes: > OK I guess. I gather we assume writing read-only registers has no side effects? > Are there rumors circulating wrt to these? I haven't heard anything about that, and if we are writing the same value back it should be pretty safe. I have heard it asserted that at least one version of the pci spec only required 32bit accesses to be supported by the hardware. One of these days I will have to look that and see if it is true. I do know it can be weird for hardware developers to support multiple kinds of decode. As I recall for pci and pci-x at the hardware level the only difference in between 32bit transactions and smaller ones is the state of the byte-enable lines. Eric _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxx https://lists.osdl.org/mailman/listinfo/linux-pm
