From: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
To: Michael Neuling <michael.neuling@au1.ibm.com>,
ian@ozlabs.au.ibm.com, linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] cxl: Add cxl_read_adapter_vpd() to the kernel API
Date: Thu, 21 Jan 2016 19:48:52 +0100 [thread overview]
Message-ID: <56A12814.5080607@linux.vnet.ibm.com> (raw)
In-Reply-To: <1453256449.28504.56.camel@au.ibm.com>
Le 20/01/2016 03:20, Michael Neuling a écrit :
> The only thing I'm a bit concerned about is are we going to end up
> duplicating a lot of the linux PCI API, but I guess we are only going
> to do this for things the papr HCALL interface mimics.
There are actually very few operations we can do on the adapter with
hcalls. papr defines 'reset', 'read the VPD' and flashing a new image on
the card. So we'll soon run out of APIs to mimic.
I guess it means the usage of cxl_get_phys_dev() should be discouraged,
since it's going to lead to different behaviors between bare-metal and
powerVM guest. Was there another expected use case for a kernel driver
other than accessing the VPD?
Fred
next prev parent reply other threads:[~2016-01-21 18:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-19 17:14 [PATCH] cxl: Add cxl_read_adapter_vpd() to the kernel API Frederic Barrat
2016-01-20 0:24 ` Andrew Donnellan
2016-01-20 2:20 ` Michael Neuling
2016-01-21 18:48 ` Frederic Barrat [this message]
2016-01-22 0:38 ` Michael Neuling
2016-01-22 10:56 ` Frederic Barrat
2016-01-20 2:21 ` Ian Munsie
2016-03-04 11:22 ` Frederic Barrat
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