Messages in this thread | | | From | Andy Lutomirski <> | Date | Mon, 23 Feb 2015 07:46:47 -0800 | Subject | Re: [PATCH 2/3] resource: Add new flag IORESOURCE_WARN (64bit) |
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On Mon, Feb 23, 2015 at 4:43 AM, Boaz Harrosh <boaz@plexistor.com> wrote: > > Resource providers set this flag if they want > that request_region_XXX will print a warning in dmesg > if this particular resource is locked by a driver. > > Thous acting as a Protocol Police about experimental > devices that did not pass a comity approval. > > The warn print looks like this: > [Feb22 19:59] resource: request unknown region [mem 0x100000000-0x1ffffffff] unkown-12 > Where the unkown-12 is taken from the res->name > > The Only user of this flag is x86/kernel/e820.c that > wants to WARN about UNKNOWN memory types. > > NOTE: This patch looks very simple, a bit flag > communicates between a resource provider ie e820.c > that a warning should be printed, and resource.c > prints such a message, when the resource is locked > for use.
I'm not really convinced this is necessary. If you somehow manage to reserve a physical address corresponding to an nvdimm, you probably know what you're doing. After all, no in-tree driver will do this by default.
--Andy
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