"Michael S. Tsirkin" <[EMAIL PROTECTED]> 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
