On 6/23/2015 2:01 AM, Ingo Molnar wrote:
>
> * Mike Travis wrote:
>
>> <<<
>> We have a large university system in the UK that is experiencing
>> very long delays modprobing the driver for a specific I/O device.
>> The delay is from 8-10 minutes per device and there are 31 devices
>> in the sy
On Tue, 2015-06-23 at 11:01 +0200, Ingo Molnar wrote:
> * Mike Travis wrote:
>
> > <<<
> > We have a large university system in the UK that is experiencing
> > very long delays modprobing the driver for a specific I/O device.
> > The delay is from 8-10 minutes per device and there are 31 devices
* Mike Travis wrote:
> <<<
> We have a large university system in the UK that is experiencing
> very long delays modprobing the driver for a specific I/O device.
> The delay is from 8-10 minutes per device and there are 31 devices
> in the system. This 4 to 5 hour delay in starting up those I/O
On Mon, 2015-06-22 at 11:22 -0700, Mike Travis wrote:
>
> On 6/22/2015 10:23 AM, Toshi Kani wrote:
> > On Mon, 2015-06-22 at 09:21 -0700, Mike Travis wrote:
> >>
> >> On 6/19/2015 2:44 PM, Toshi Kani wrote:
> >>> __ioremap_caller() calls region_is_ram() to look up the resource
> >>> to check if a
On 6/22/2015 10:23 AM, Toshi Kani wrote:
> On Mon, 2015-06-22 at 09:21 -0700, Mike Travis wrote:
>>
>> On 6/19/2015 2:44 PM, Toshi Kani wrote:
>>> __ioremap_caller() calls region_is_ram() to look up the resource
>>> to check if a target range is RAM, which was added as an additinal
>>> check to i
On Mon, 2015-06-22 at 09:21 -0700, Mike Travis wrote:
>
> On 6/19/2015 2:44 PM, Toshi Kani wrote:
> > __ioremap_caller() calls region_is_ram() to look up the resource
> > to check if a target range is RAM, which was added as an additinal
> > check to improve the lookup performance over page_is_ram
On 6/19/2015 2:44 PM, Toshi Kani wrote:
> __ioremap_caller() calls region_is_ram() to look up the resource
> to check if a target range is RAM, which was added as an additinal
> check to improve the lookup performance over page_is_ram() (commit
> 906e36c5c717 "x86: use optimized ioresource lookup
__ioremap_caller() calls region_is_ram() to look up the resource
to check if a target range is RAM, which was added as an additinal
check to improve the lookup performance over page_is_ram() (commit
906e36c5c717 "x86: use optimized ioresource lookup in ioremap
function").
__ioremap_caller() then c
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