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Date: Mon, 22 Aug 2016 02:48:18 +0000
From: "Sell, Timothy C" <Timothy.Sell@...sys.com>
To: 'Greg KH' <gregkh@...uxfoundation.org>
CC: "corbet@....net" <corbet@....net>,
"tglx@...utronix.de" <tglx@...utronix.de>,
"mingo@...hat.com" <mingo@...hat.com>,
"hpa@...or.com" <hpa@...or.com>,
"Arfvidson, Erik" <Erik.Arfvidson@...sys.com>,
"Sell, Timothy C" <Timothy.Sell@...sys.com>,
"hofrat@...dl.org" <hofrat@...dl.org>,
"dzickus@...hat.com" <dzickus@...hat.com>,
"jes.sorensen@...hat.com" <jes.sorensen@...hat.com>,
"Curtin, Alexander Paul" <Alexander.Curtin@...sys.com>,
"janani.rvchndrn@...il.com" <janani.rvchndrn@...il.com>,
"sudipm.mukherjee@...il.com" <sudipm.mukherjee@...il.com>,
"prarit@...hat.com" <prarit@...hat.com>,
"Binder, David Anthony" <David.Binder@...sys.com>,
"nhorman@...hat.com" <nhorman@...hat.com>,
"dan.j.williams@...el.com" <dan.j.williams@...el.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
"driverdev-devel@...uxdriverproject.org"
<driverdev-devel@...uxdriverproject.org>,
*S-Par-Maintainer <SParMaintainer@...sys.com>,
"Kershner, David A" <David.Kershner@...sys.com>
Subject: RE: [PATCH 3/3] drivers: Add visorbus to the drivers/virt directory
> -----Original Message-----
> From: Greg KH [mailto:gregkh@...uxfoundation.org]
> Sent: Sunday, August 21, 2016 2:05 PM
> To: Kershner, David A <David.Kershner@...sys.com>
> Cc: corbet@....net; tglx@...utronix.de; mingo@...hat.com;
> hpa@...or.com; Arfvidson, Erik <Erik.Arfvidson@...sys.com>; Sell, Timothy
> C <Timothy.Sell@...sys.com>; hofrat@...dl.org; dzickus@...hat.com;
> jes.sorensen@...hat.com; Curtin, Alexander Paul
> <Alexander.Curtin@...sys.com>; janani.rvchndrn@...il.com;
> sudipm.mukherjee@...il.com; prarit@...hat.com; Binder, David Anthony
> <David.Binder@...sys.com>; nhorman@...hat.com;
> dan.j.williams@...el.com; linux-kernel@...r.kernel.org; linux-
> doc@...r.kernel.org; driverdev-devel@...uxdriverproject.org; *S-Par-
> Maintainer <SParMaintainer@...sys.com>
> Subject: Re: [PATCH 3/3] drivers: Add visorbus to the drivers/virt directory
>
> On Fri, Jun 10, 2016 at 11:23:56PM -0400, David Kershner wrote:
> > visorbus is currently located at drivers/staging/visorbus,
> > this patch moves it to drivers/virt.
> >
> > Signed-off-by: David Kershner <david.kershner@...sys.com>
> > Reviewed-by: Tim Sell <Timothy.Sell@...sys.com>
> > ---
> > drivers/staging/unisys/Kconfig | 3 +--
> > drivers/staging/unisys/Makefile | 1 -
> > drivers/virt/Kconfig | 2 ++
> > drivers/virt/Makefile | 1 +
> > drivers/{staging/unisys => virt}/visorbus/Kconfig | 0
> > drivers/{staging/unisys => virt}/visorbus/Makefile | 0
> > drivers/{staging/unisys => virt}/visorbus/controlvmchannel.h | 0
> > drivers/{staging/unisys => virt}/visorbus/controlvmcompletionstatus.h | 0
> > drivers/{staging/unisys => virt}/visorbus/iovmcall_gnuc.h | 0
> > drivers/{staging/unisys => virt}/visorbus/vbuschannel.h | 0
> > drivers/{staging/unisys => virt}/visorbus/vbusdeviceinfo.h | 0
> > drivers/{staging/unisys => virt}/visorbus/vbushelper.h | 0
> > drivers/{staging/unisys => virt}/visorbus/visorbus_main.c | 0
> > drivers/{staging/unisys => virt}/visorbus/visorbus_private.h | 0
> > drivers/{staging/unisys => virt}/visorbus/visorchannel.c | 0
> > drivers/{staging/unisys => virt}/visorbus/visorchipset.c | 0
>
> I picked one random file here, this last one, and found a number of
> "odd" things in it.
>
> So, given that I can't really comment on the patch itself, I'm going to
> include the file below, quote it, and then provide some comments, ok?
> > /* visorchipset_main.c
> > ...
> > static void
> > controlvm_init_response(struct controlvm_message *msg,
> > struct controlvm_message_header *msg_hdr, int response)
> > {
> > memset(msg, 0, sizeof(struct controlvm_message));
> > memcpy(&msg->hdr, msg_hdr, sizeof(struct controlvm_message_header));
> > msg->hdr.payload_bytes = 0;
> > msg->hdr.payload_vm_offset = 0;
> > msg->hdr.payload_max_bytes = 0;
> > if (response < 0) {
> > msg->hdr.flags.failed = 1;
> > msg->hdr.completion_status = (u32)(-response);
> > }
> > }
> >
> > static void
> > Billy(struct controlvm_message_header *msg_hdr, int response)
>
> Not John? Bob? Sally? Alice? Bernise? Jean? Molly?
Huh? What version of source code are you looking at??
The file being moved by this patch should be
drivers/staging/unisys/visorbus/visorchipset.c in your staging-next branch
(https://git.kernel.org/cgit/linux/kernel/git/gregkh/staging.git/tree/drivers/staging/unisys/visorbus/visorchipset.c?h=staging-next).
If you look there, you will NOT find "Billy()", but instead "controlvm_respond()", i.e.:
static void
controlvm_init_response(struct controlvm_message *msg,
struct controlvm_message_header *msg_hdr, int response)
{
memset(msg, 0, sizeof(struct controlvm_message));
memcpy(&msg->hdr, msg_hdr, sizeof(struct controlvm_message_header));
msg->hdr.payload_bytes = 0;
msg->hdr.payload_vm_offset = 0;
msg->hdr.payload_max_bytes = 0;
if (response < 0) {
msg->hdr.flags.failed = 1;
msg->hdr.completion_status = (u32)(-response);
}
}
static void
controlvm_respond(struct controlvm_message_header *msg_hdr, int response)
{
struct controlvm_message outmsg;
controlvm_init_response(&outmsg, msg_hdr, response);
if (outmsg.hdr.flags.test_message == 1)
return;
if (!visorchannel_signalinsert(controlvm_channel,
CONTROLVM_QUEUE_REQUEST, &outmsg)) {
return;
}
}
One (or both) of us is confused.
Tim Sell
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