accessing a PCIe register from userspace through kmem or other ways ?

[Jim Harris]

On Wed, Mar 30, 2016 at 10:47 AM, Luigi Rizzo <rizzo at iet.unipi.it> wrote:

> Hi,
> I'd like to test the rate at which I can access device registers
> on a PCIe card, and was wondering whether I need to patch a device
> driver, or perhaps I can use /dev/kmem once I figure out where
> the registers are mapped ?
>

You do not need to patch a device driver.  Have you looked at
libpciaccess?  This should give you everything you need.


-Jim


> thanks
> luigi
>
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