Messages in this thread | | | Date | Mon, 1 Sep 2008 18:19:05 -0600 | From | Alex Chiang <> | Subject | Re: [PATCH] PCI Hotplug: fakephp: fix deadlock... again |
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* Matthew Wilcox <matthew@wil.cx>: > On Mon, Sep 01, 2008 at 12:40:18PM -0600, Alex Chiang wrote: > > We get the "slot already scheduled for removal" because that > > particular device has 2 functions, and we're creating slots > > on a per-slot basis now, not a per-function basis. > > > > Although, I wonder, Willy -- is that really the right thing > > to do? Seems like fakephp would be more useful if we did > > operate on a per-function basis, and not per-slot. Especially > > given Yu's work with SR-IOV, where we can apparently have > > lots of functions per a physical device. > > I suspect it depends on what you believe the point of fakephp > is.
Ok, this was all developed before I started working in this area, or Linux, even. ;)
> My assumption was that it was a way to fake what would happen > if you had a hotplug controller for a particular slot. In that > context, the change I made was clearly correct. If you want to > use it for hot-removing individual functions from a Linux guest > running under a hypervisor (for example), that's much less > useful.
Sure, that sounds reasonable.
In that case, my patch should fix the stupid regression I introduced, but if others think that fakephp would be more useful for hot-removing functions, I wouldn't object to reverting the original patch.
Thanks.
/ac
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