On 09/02/15 07:08, Juergen Gross wrote:
> On 02/07/2015 04:31 AM, Rudy Zhang wrote:
>> From: Tao Chen
>>
>> Signed-off-by: Tao Chen
>
> Are some white space fixes in comments really worth a patch?
No.
David
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https://bugzilla.kernel.org/show_bug.cgi?id=10890
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https://bugzilla.kernel.org/show_bug.cgi?id=10554
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https://bugzilla.kernel.org/show_bug.cgi?id=14534
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https://bugzilla.kernel.org/show_bug.cgi?id=15562
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https://bugzilla.kernel.org/show_bug.cgi?id=16058
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On 02/19/2015 11:09 AM, Kjetil Torgrim Homme wrote:
this regression is getting old, but it's still present in the newest
Linus kernels.
I have a HP server with a P411 card with a MSL G3 48 slot tape changer
attached. the tape changer has two LTO5 and one LTO6 tape drives
installed. one of the
Hi Sreekanth !
While looking at some (unrelated) issue where mtp2sas seems to be using
32-bit DMA instead of 64-bit DMA on some POWER platforms, I noticed this
patch which was merged as 5fb1bf8aaa832e1e9ca3198de7bbecb8eff7db9c.
Can you confirm my understanding that you are:
- Setting the DMA ma
On Fri, 2015-02-20 at 16:01 +1100, Benjamin Herrenschmidt wrote:
> Hi Sreekanth !
>
> While looking at some (unrelated) issue where mtp2sas seems to be using
> 32-bit DMA instead of 64-bit DMA on some POWER platforms, I noticed this
> patch which was merged as 5fb1bf8aaa832e1e9ca3198de7bbecb8eff7d
On Fri, 2015-02-20 at 16:06 +1100, Benjamin Herrenschmidt wrote:
> Note that even on powerpc platforms where it would work because we
> maintain both 32-bit and 64-bit bypass windows in the device address
> space simultaneously, you will leak iommu entries unless you also switch
> back to 32-bit w
On Fri, 2015-02-20 at 16:22 +1100, Benjamin Herrenschmidt wrote:
> On Fri, 2015-02-20 at 16:06 +1100, Benjamin Herrenschmidt wrote:
>
> > Note that even on powerpc platforms where it would work because we
> > maintain both 32-bit and 64-bit bypass windows in the device address
> > space simultaneo
On Fri, 2015-02-20 at 16:22 +1100, Benjamin Herrenschmidt wrote:
> Looking a bit more closely, you basically do
>
> - set_dma_mask(64-bit)
> - set_consistent_dma_mask(32-bit)
>
> Now, I don't know how x86 will react to the conflicting masks, but on
> ppc64, I'm pretty sure the second one will
On Thu, 2015-02-19 at 21:45 -0800, James Bottomley wrote:
> Ben, this is legal by design. It was specifically designed for the
> aic79xx SCSI card, but can be used for a variety of other reasons. The
> aic79xx hardware problem was that the DMA engine could address the whole
> of memory (it had tw
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