Re: [PATCH] pci-dma: Fix x86 dma_alloc_coherent to fully clear all pages returned

[Tim Chen]

On Wed, 2015-02-18 at 14:53 -0500, Alan Stern wrote:
> On Wed, 18 Feb 2015, Tim Chen wrote:
> 
> > On Wed, 2015-02-04 at 10:30 -0800, Tim Chen wrote:
> > > On Mon, 2015-02-02 at 19:39 +0300, Sergei Shtylyov wrote:
> > > 
> > > > 
> > > > > Hi, is this an open-coded version of PAGE_ALIGN?
> > > > 
> > > >     Yes, it appears so. :-)
> > > > 
> > > > WBR, Sergei
> > > > 
> > > 
> > > Thanks for the suggestion by Jiri. I updated the patch to use PAGE_ALIGN
> > > below.
> > > 
> > > Regards,
> > > Tim
> > > 
> > 
> > Is there any resolution on this patch?  I haven't seen fixes from the
> > XHCI folks yet.  This is breaking many of our systems.
> 
> Have you tried doing the experiments I suggested in
> 
>         http://marc.info/?l=linux-usb&m=142272448620716&w=2
> 
> to determine where the problem occurs?
> 

I was bogged down with other things lately and I haven't got a chance to
test that.  But as you said, there's very few places where xhci 
call this memory allocation.  So I think the problem has been fairly
narrowed down for the XHCI folks.

Tim

> Alan Stern
> 


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