From: Al Viro <viro@zeniv.linux.org.uk>
To: op-tee@lists.trustedfirmware.org
Subject: Re: [PATCH 2/4] tee: Remove vmalloc page support
Date: Mon, 10 Oct 2022 18:57:42 +0100 [thread overview]
Message-ID: <Y0RdFni5N6rMsxuM@ZenIV> (raw)
In-Reply-To: < <CAHk-=whvmR98OHdYf4yOJgp86hq0VMVXJ9b1Qk7P_Rjq_=HU+A@mail.gmail.com>>
[-- Attachment #1: Type: text/plain, Size: 559 bytes --]
On Mon, Oct 10, 2022 at 10:20:15AM -0700, Linus Torvalds wrote:
> On Mon, Oct 10, 2022 at 12:42 AM Christoph Hellwig <hch@lst.de> wrote:
> >
> > I suspect the best long term option would be to just pass an iov_iter..
>
> Hmm. Yeah, that sounds like a workable model, and solves the problem
> JensW pointed out with my simplistic "just pass a page array" approach
> where you also need to keep track of how to release things.
Except that then you need to get iov_iter_get_pages analogue that would
work for ITER_KVEC, which is exact same problem right back.
WARNING: multiple messages have this Message-ID (diff)
From: Al Viro <viro@zeniv.linux.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Christoph Hellwig" <hch@lst.de>,
"Sumit Garg" <sumit.garg@linaro.org>,
"Phil Chang (張世勳)" <Phil.Chang@mediatek.com>,
"ira.weiny@intel.com" <ira.weiny@intel.com>,
"Jens Wiklander" <jens.wiklander@linaro.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Fabio M. De Francesco" <fmdefrancesco@gmail.com>,
"op-tee@lists.trustedfirmware.org"
<op-tee@lists.trustedfirmware.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [PATCH 2/4] tee: Remove vmalloc page support
Date: Mon, 10 Oct 2022 18:57:42 +0100 [thread overview]
Message-ID: <Y0RdFni5N6rMsxuM@ZenIV> (raw)
In-Reply-To: <CAHk-=whvmR98OHdYf4yOJgp86hq0VMVXJ9b1Qk7P_Rjq_=HU+A@mail.gmail.com>
On Mon, Oct 10, 2022 at 10:20:15AM -0700, Linus Torvalds wrote:
> On Mon, Oct 10, 2022 at 12:42 AM Christoph Hellwig <hch@lst.de> wrote:
> >
> > I suspect the best long term option would be to just pass an iov_iter..
>
> Hmm. Yeah, that sounds like a workable model, and solves the problem
> JensW pointed out with my simplistic "just pass a page array" approach
> where you also need to keep track of how to release things.
Except that then you need to get iov_iter_get_pages analogue that would
work for ITER_KVEC, which is exact same problem right back.
next parent reply other threads:[~2022-10-10 17:57 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] < <CAHk-=whvmR98OHdYf4yOJgp86hq0VMVXJ9b1Qk7P_Rjq_=HU+A@mail.gmail.com>
2022-10-10 17:57 ` Al Viro [this message]
2022-10-10 17:57 ` [PATCH 2/4] tee: Remove vmalloc page support Al Viro
[not found] < <CAFA6WYNMRymyqkqfASYAPVoL0iR2kw0h9YKZ1gBTdeSuHMOAtQ@mail.gmail.com>
2022-12-16 8:45 ` Sumit Garg
2022-12-16 8:45 ` Sumit Garg
[not found] < <CAHUa44GkTLCzuSij5FbjBXFBM1CCQROtrCtHHtj70ZRi-3K7uA@mail.gmail.com>
2022-12-16 0:41 ` Ira Weiny
2022-12-16 0:41 ` Ira Weiny
2022-12-16 5:09 ` Sumit Garg
2022-12-16 5:09 ` Sumit Garg
2022-12-16 7:06 ` Christoph Hellwig
2022-12-16 7:06 ` Christoph Hellwig
[not found] < <CAHk-=whVyH-wSWLd=Zn4rwo+91T+qzRvfMPC2yFX98GxykOqOw@mail.gmail.com>
2022-10-07 8:12 ` Jens Wiklander
2022-10-07 8:12 ` Jens Wiklander
2022-10-10 7:42 ` Christoph Hellwig
2022-10-10 7:42 ` Christoph Hellwig
2022-10-10 17:20 ` Linus Torvalds
2022-10-10 17:20 ` Linus Torvalds
[not found] < <CAFA6WYMT9S1Di6DN_UXc823f0ZTkqerE1PB=oG6wmfx28vEbDg@mail.gmail.com>
2022-10-06 18:19 ` Ira Weiny
2022-10-06 18:19 ` Ira Weiny
2022-10-06 18:20 ` Linus Torvalds
2022-10-06 18:20 ` Linus Torvalds
[not found] <=?utf-8?q?=3CTYZPR03MB65279558CC22F5130B710EA8FB5D9=40TYZPR03MB?= =?utf-8?q?6527=2Eapcprd03=2Eprod=2Eoutlook=2Ecom=3E?=>
2022-10-06 6:23 ` Sumit Garg
2022-10-06 6:23 ` Sumit Garg
[not found] < <CAFA6WYN+3inY6MYrMFY0qhmifCYtj_immFMFN6jC1BamQCYGWQ@mail.gmail.com>
2022-10-03 15:22 ` [PATCH 0/4] Remove get_kernel_pages() Ira Weiny
2022-10-03 15:22 ` Ira Weiny
2022-10-04 6:32 ` Sumit Garg
2022-10-04 6:32 ` Sumit Garg
2022-10-02 0:23 ira.weiny
2022-10-02 0:23 ` ira.weiny
2022-10-02 0:23 ` [PATCH 1/4] highmem: Enhance is_kmap_addr() to check kmap_local_page() mappings ira.weiny
2022-10-02 0:23 ` ira.weiny
2022-10-02 0:23 ` [PATCH 2/4] tee: Remove vmalloc page support ira.weiny
2022-10-02 0:23 ` ira.weiny
2022-10-03 6:41 ` Jens Wiklander
2022-10-03 6:41 ` Jens Wiklander
2022-10-03 6:57 ` Sumit Garg
2022-10-03 6:57 ` Sumit Garg
2022-10-05 3:28 ` Phil Chang (張世勳)
2022-10-05 3:28 ` Phil Chang (張世勳)
2022-10-02 0:23 ` [PATCH 3/4] tee: Remove call to get_kernel_pages() ira.weiny
2022-10-02 0:23 ` ira.weiny
2022-10-02 0:46 ` Al Viro
2022-10-02 0:46 ` Al Viro
2022-10-02 2:30 ` Ira Weiny
2022-10-02 2:30 ` Ira Weiny
2022-10-03 7:17 ` Christoph Hellwig
2022-10-03 7:17 ` Christoph Hellwig
2022-10-03 15:02 ` Ira Weiny
2022-10-03 15:02 ` Ira Weiny
2022-10-02 0:23 ` [PATCH 4/4] mm: Remove get_kernel_pages() ira.weiny
2022-10-02 0:23 ` ira.weiny
2022-10-03 20:28 ` John Hubbard
2022-10-03 20:28 ` John Hubbard
2022-10-03 9:25 ` [PATCH 0/4] " Sumit Garg
2022-10-03 9:25 ` Sumit Garg
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