From: Heiner Kallweit <[email protected]>
Date: Tue, 21 Aug 2018 23:19:04 +0200
> That's what I get on my system (RTL8168E-VL). In your case you'll come
> only till the first suspend.
>
> [ 3.743404] r8169 0000:03:00.0: MSI-X entry: context probe: fee01004 0
> 40ef 1
On probe, MSI-X is masked (ie. disabled) and is configured to use:
address: 0x00000000fee01004
data: 0x00000000000040ef
> [ 29.539250] r8169 0000:03:00.0: MSI-X entry: context suspend: fee02004 0
> 4028 0
At suspend time, MSI-X is unmasked (ie. enabled) and is configured to use:
address: 0x00000000fee01004
data: 0x0000000000004028
> [ 29.837457] r8169 0000:03:00.0: MSI-X entry: context resume: fee01004 0
> 402b 0
At reume time, MSI-X is unmasked (ie. enabled) and is configured to use:
address: 0x00000000fee01004
data: 0x000000000000402b
> [ 36.921370] r8169 0000:03:00.0: MSI-X entry: context suspend: fee01004 0
> 402b 0
Second suspend:
address: 0x00000000fee01004
data: 0x000000000000402b
> [ 37.239407] r8169 0000:03:00.0: MSI-X entry: context resume: fee01004 0
> 402b 0
Second resume:
address: 0x00000000fee01004
data: 0x000000000000402b
And this all looks normal. The data field is changing when you first up the
device
and interrupts are enabled. This is where the request_irq happens, the MSI
vector is allocated, and that vector number is written to the data field of the
MSI-X entry.
It looks like this (re-)allocation of MSI vectors happens on every resume as
well.
And that's why the data field changes each resume.
