Linux-HyperV Archive on lore.kernel.org
 help / color / Atom feed
From: Sasha Levin <sashal@kernel.org>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: alexander.deucher@amd.com, chris@chris-wilson.co.uk,
	ville.syrjala@linux.intel.com, Hawking.Zhang@amd.com,
	tvrtko.ursulin@intel.com, linux-kernel@vger.kernel.org,
	linux-hyperv@vger.kernel.org, kys@microsoft.com,
	haiyangz@microsoft.com, sthemmin@microsoft.com,
	wei.liu@kernel.org, spronovo@microsoft.com, iourit@microsoft.com,
	dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org
Subject: Re: [RFC PATCH 1/4] gpu: dxgkrnl: core code
Date: Tue, 19 May 2020 13:45:53 -0400
Message-ID: <20200519174553.GF33628@sasha-vm> (raw)
In-Reply-To: <20200519172105.GB1101627@kroah.com>

On Tue, May 19, 2020 at 07:21:05PM +0200, Greg KH wrote:
>On Tue, May 19, 2020 at 12:32:31PM -0400, Sasha Levin wrote:
>> +
>> +#define DXGK_MAX_LOCK_DEPTH	64
>> +#define W_MAX_PATH		260
>
>We already have a max path number, why use a different one?

It's max path for Windows, not Linux (thus the "W_" prefix) :)

Maybe changing it to WIN_MAX_PATH or such will make it better?

>> +#define d3dkmt_handle		u32
>> +#define d3dgpu_virtual_address	u64
>> +#define winwchar		u16
>> +#define winhandle		u64
>> +#define ntstatus		int
>> +#define winbool			u32
>> +#define d3dgpu_size_t		u64
>
>These are all ripe for a simple search/replace in your editor before you
>do your next version :)

I've actually attempted that, and reverted that change, mostly because
the whole 'handle' thing became very confusing.

Note that we have a few 'handles', each with a different size, and thus
calling get_something_something_handle() type of functions becase very
confusing since it's not clear what handle we're working with in that
case.

With regards to the rest, I wanted to leave stuff like 'winbool' to
document the expected ABI between the Windows and Linux side of things.
Ideally it would be 'bool' or 'u8', but as you see we had to use 'u32'
here which I feel lessens our ability to have the code document itself.

I don't feel too strongly against doing the conversion, and I won't
object to doing it if you do, but just be aware that I've tried it and
preferred to go back (even though our coding style doesn't like this) :)

-- 
Thanks,
Sasha

  reply index

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-19 16:32 [RFC PATCH 0/4] DirectX on Linux Sasha Levin
2020-05-19 16:32 ` [RFC PATCH 2/4] gpu: dxgkrnl: hook up dxgkrnl Sasha Levin
2020-05-19 16:32 ` [RFC PATCH 3/4] Drivers: hv: vmbus: " Sasha Levin
2020-05-19 16:32 ` [RFC PATCH 4/4] gpu: dxgkrnl: create a MAINTAINERS entry Sasha Levin
     [not found] ` <20200519163234.226513-2-sashal@kernel.org>
2020-05-19 17:19   ` [RFC PATCH 1/4] gpu: dxgkrnl: core code Greg KH
2020-05-19 17:21   ` Greg KH
2020-05-19 17:45     ` Sasha Levin [this message]
2020-05-20  6:13       ` Greg KH
2020-05-19 17:27   ` Greg KH
2020-05-19 19:21 ` [RFC PATCH 0/4] DirectX on Linux Daniel Vetter
2020-05-19 20:36   ` Sasha Levin
2020-05-20 10:37     ` Jan Engelhardt
2020-06-28 23:39     ` James Hilliard
2020-05-19 22:42 ` Dave Airlie
2020-05-19 23:01   ` Daniel Vetter
2020-05-20  3:47     ` [EXTERNAL] " Steve Pronovost
     [not found]       ` <CAKMK7uFubAxtMEeCOYtvgjGYtmDVJeXcPFzmRD7t5BUm_GPP0w@mail.gmail.com>
     [not found]         ` <MWHPR21MB02870909F08EBA08EB903635C7B60@MWHPR21MB0287.namprd21.prod.outlook.com>
2020-05-20 15:34           ` Steve Pronovost
2020-06-16 10:51       ` Pavel Machek
2020-05-19 23:12   ` Dave Airlie
2020-06-16 10:51     ` Pavel Machek
2020-06-16 13:21       ` Sasha Levin
2020-05-20  7:10 ` Thomas Zimmermann
2020-05-20  7:42   ` [EXTERNAL] " Steve Pronovost
2020-05-20 11:06     ` Thomas Zimmermann
2020-06-16 10:51   ` Pavel Machek
2020-06-16 13:28     ` Sasha Levin
2020-06-16 14:41       ` Pavel Machek
2020-06-16 16:00         ` Sasha Levin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200519174553.GF33628@sasha-vm \
    --to=sashal@kernel.org \
    --cc=Hawking.Zhang@amd.com \
    --cc=alexander.deucher@amd.com \
    --cc=chris@chris-wilson.co.uk \
    --cc=dri-devel@lists.freedesktop.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=haiyangz@microsoft.com \
    --cc=iourit@microsoft.com \
    --cc=kys@microsoft.com \
    --cc=linux-fbdev@vger.kernel.org \
    --cc=linux-hyperv@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=spronovo@microsoft.com \
    --cc=sthemmin@microsoft.com \
    --cc=tvrtko.ursulin@intel.com \
    --cc=ville.syrjala@linux.intel.com \
    --cc=wei.liu@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-HyperV Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-hyperv/0 linux-hyperv/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-hyperv linux-hyperv/ https://lore.kernel.org/linux-hyperv \
		linux-hyperv@vger.kernel.org
	public-inbox-index linux-hyperv

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-hyperv


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git