From: Christoph Hellwig <hch@infradead.org>
To: Matthew Wilcox <willy@infradead.org>
Cc: "Jarkko Sakkinen" <jarkko@kernel.org>,
linux-mm@kvack.org, "Dave Hansen" <dave.hansen@linux.intel.com>,
"Nathaniel McCallum" <nathaniel@profian.com>,
"Reinette Chatre" <reinette.chatre@intel.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
linux-sgx@vger.kernel.org, linux-kernel@vger.kernel.org,
"Florian Fainelli" <f.fainelli@gmail.com>,
"Thomas Bogendoerfer" <tsbogend@alpha.franken.de>,
"Matthew Auld" <matthew.auld@intel.com>,
"Thomas Hellström" <thomas.hellstrom@linux.intel.com>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Jason Ekstrand" <jason@jlekstrand.net>,
"Chris Wilson" <chris@chris-wilson.co.uk>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Tvrtko Ursulin" <tvrtko.ursulin@intel.com>,
"Vasily Averin" <vvs@virtuozzo.com>,
"Shakeel Butt" <shakeelb@google.com>,
"Michal Hocko" <mhocko@suse.com>,
zhangyiru <zhangyiru3@huawei.com>,
"Alexey Gladkov" <legion@kernel.org>,
"Alexander Mikhalitsyn" <alexander.mikhalitsyn@virtuozzo.com>,
linux-mips@vger.kernel.org, intel-gfx@lists.freedesktop.org,
dri-devel@lists.freedesktop.org, codalist@coda.cs.cmu.edu,
linux-unionfs@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH RFC 0/3] MAP_POPULATE for device memory
Date: Sun, 6 Mar 2022 23:48:26 -0800 [thread overview]
Message-ID: <YiW4yurDXSifTYUt@infradead.org> (raw)
In-Reply-To: <YiSb7tsUEBRGS+HA@casper.infradead.org>
On Sun, Mar 06, 2022 at 11:33:02AM +0000, Matthew Wilcox wrote:
> On Sun, Mar 06, 2022 at 07:32:04AM +0200, Jarkko Sakkinen wrote:
> > For device memory (aka VM_IO | VM_PFNMAP) MAP_POPULATE does nothing. Allow
> > to use that for initializing the device memory by providing a new callback
> > f_ops->populate() for the purpose.
>
> As I said, NAK.
Agreed. This is an amazingly bad interface.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@infradead.org>
To: Matthew Wilcox <willy@infradead.org>
Cc: "Michal Hocko" <mhocko@suse.com>,
zhangyiru <zhangyiru3@huawei.com>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
dri-devel@lists.freedesktop.org,
"Chris Wilson" <chris@chris-wilson.co.uk>,
linux-mm@kvack.org,
"Alexander Mikhalitsyn" <alexander.mikhalitsyn@virtuozzo.com>,
"Florian Fainelli" <f.fainelli@gmail.com>,
linux-unionfs@vger.kernel.org, codalist@coda.cs.cmu.edu,
"Matthew Auld" <matthew.auld@intel.com>,
"Vasily Averin" <vvs@virtuozzo.com>,
"Thomas Hellström" <thomas.hellstrom@linux.intel.com>,
intel-gfx@lists.freedesktop.org, linux-mips@vger.kernel.org,
"Shakeel Butt" <shakeelb@google.com>,
"Reinette Chatre" <reinette.chatre@intel.com>,
linux-sgx@vger.kernel.org,
"Thomas Bogendoerfer" <tsbogend@alpha.franken.de>,
"Nathaniel McCallum" <nathaniel@profian.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org,
"Jarkko Sakkinen" <jarkko@kernel.org>,
linux-fsdevel@vger.kernel.org,
"Andrew Morton" <akpm@linux-foundation.org>,
"Alexey Gladkov" <legion@kernel.org>
Subject: Re: [Intel-gfx] [PATCH RFC 0/3] MAP_POPULATE for device memory
Date: Sun, 6 Mar 2022 23:48:26 -0800 [thread overview]
Message-ID: <YiW4yurDXSifTYUt@infradead.org> (raw)
In-Reply-To: <YiSb7tsUEBRGS+HA@casper.infradead.org>
On Sun, Mar 06, 2022 at 11:33:02AM +0000, Matthew Wilcox wrote:
> On Sun, Mar 06, 2022 at 07:32:04AM +0200, Jarkko Sakkinen wrote:
> > For device memory (aka VM_IO | VM_PFNMAP) MAP_POPULATE does nothing. Allow
> > to use that for initializing the device memory by providing a new callback
> > f_ops->populate() for the purpose.
>
> As I said, NAK.
Agreed. This is an amazingly bad interface.
next prev parent reply other threads:[~2022-03-07 7:48 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-06 5:32 [PATCH RFC 0/3] MAP_POPULATE for device memory Jarkko Sakkinen
2022-03-06 5:32 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-06 5:32 ` Jarkko Sakkinen
2022-03-06 5:32 ` [PATCH RFC 1/3] mm: Add f_ops->populate() Jarkko Sakkinen
2022-03-06 5:32 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-06 5:32 ` Jarkko Sakkinen
2022-03-06 10:01 ` Greg Kroah-Hartman
2022-03-06 10:01 ` [Intel-gfx] " Greg Kroah-Hartman
2022-03-06 10:01 ` Greg Kroah-Hartman
2022-03-06 17:02 ` Jarkko Sakkinen
2022-03-06 17:02 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-06 17:02 ` Jarkko Sakkinen
2022-03-06 17:03 ` Jarkko Sakkinen
2022-03-06 17:03 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-06 17:03 ` Jarkko Sakkinen
2022-03-06 22:43 ` Matthew Wilcox
2022-03-06 22:43 ` [Intel-gfx] " Matthew Wilcox
2022-03-06 22:43 ` Matthew Wilcox
2022-03-07 13:16 ` Jarkko Sakkinen
2022-03-07 13:16 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-07 13:16 ` Jarkko Sakkinen
2022-03-07 13:26 ` Jarkko Sakkinen
2022-03-07 13:26 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-07 13:26 ` Jarkko Sakkinen
2022-03-06 5:32 ` [PATCH RFC 2/3] x86/sgx: Export sgx_encl_page_alloc() Jarkko Sakkinen
2022-03-06 5:32 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-06 5:32 ` Jarkko Sakkinen
2022-03-06 5:32 ` [PATCH RFC 3/3] x86/sgx: Implement EAUG population with MAP_POPULATE Jarkko Sakkinen
2022-03-06 5:32 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-06 5:32 ` Jarkko Sakkinen
2022-03-06 8:30 ` [PATCH RFC 0/3] MAP_POPULATE for device memory David Laight
2022-03-06 8:30 ` [Intel-gfx] " David Laight
2022-03-06 8:30 ` David Laight
2022-03-06 16:52 ` 'Jarkko Sakkinen'
2022-03-06 16:52 ` [Intel-gfx] " 'Jarkko Sakkinen'
2022-03-06 16:52 ` 'Jarkko Sakkinen'
2022-03-06 11:33 ` Matthew Wilcox
2022-03-06 11:33 ` [Intel-gfx] " Matthew Wilcox
2022-03-06 11:33 ` Matthew Wilcox
2022-03-07 7:48 ` Christoph Hellwig [this message]
2022-03-07 7:48 ` [Intel-gfx] " Christoph Hellwig
2022-03-07 13:29 ` Jarkko Sakkinen
2022-03-07 13:29 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-07 13:29 ` Jarkko Sakkinen
2022-03-07 15:56 ` Christoph Hellwig
2022-03-07 15:56 ` [Intel-gfx] " Christoph Hellwig
2022-03-07 15:58 ` Jarkko Sakkinen
2022-03-07 15:58 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-07 15:58 ` Jarkko Sakkinen
2022-03-07 22:11 ` David Laight
2022-03-07 22:11 ` [Intel-gfx] " David Laight
2022-03-07 22:11 ` David Laight
2022-03-08 10:10 ` Jarkko Sakkinen
2022-03-08 10:10 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-08 10:10 ` Jarkko Sakkinen
2022-03-07 10:12 ` David Hildenbrand
2022-03-07 10:12 ` [Intel-gfx] " David Hildenbrand
2022-03-07 10:12 ` David Hildenbrand
2022-03-07 14:22 ` Jarkko Sakkinen
2022-03-07 14:22 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-07 14:22 ` Jarkko Sakkinen
2022-03-07 14:33 ` David Hildenbrand
2022-03-07 14:33 ` [Intel-gfx] " David Hildenbrand
2022-03-07 14:33 ` David Hildenbrand
2022-03-07 15:49 ` Jarkko Sakkinen
2022-03-07 15:49 ` [Intel-gfx] " Jarkko Sakkinen
2022-03-07 15:49 ` Jarkko Sakkinen
2022-03-07 14:23 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for " Patchwork
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