On 6/7/19 1:03 PM, Dan Williams wrote: >> Separate from these patches, should we have a runtime file that dumps >> out the same info? dmesg isn't always available, and hotplug could >> change this too, I'd imagine. > Perhaps, but I thought /proc/iomem was that runtime file. Given that > x86/Linux only seems to care about the the EFI to E820 translation of > the map and the E820 map is directly reflected in /proc/iomem, do we > need another file? Probably not. I'm just trying to think of ways that we can debug systems where someone "loses" a bunch of memory, especially if they're moving from an old kernel to a new one with these patches. From their perspective, they just lost a bunch of expensive memory. Do we owe a pr_info(), perhaps? Or even a /proc/meminfo entry for how much memory these devices own?
