On Thu, Mar 25, 2021 at 10:55:01AM -0700, Dan Williams wrote: > On Thu, Mar 25, 2021 at 1:29 AM Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > > > > On Thu, Mar 25, 2021 at 07:54:59AM +0100, Greg Kroah-Hartman wrote: > > > On Wed, Mar 24, 2021 at 06:23:54PM -0700, Dan Williams wrote: > > > > The PCIE Data Object Exchange (DOE) mailbox is a protocol run over > > > > configuration cycles. It assumes one initiator at a time is > > > > reading/writing the data registers. > > > > > > That sounds like a horrible protocol for a multi-processor system. > > > Where is it described and who can we go complain to for creating such a > > > mess? > > > > Indeed. Dan, is there a way to stilk kill this protocol off before it > > leaks into the wild? > > Unfortunately I think that opportunity was more than a year ago, and > there's been a proliferation of derivative protocols building on it > since. Doesn't mean it can't be changed, right? Are there any actual devices that require this? thanks, greg k-h
