linux-kernel - Re: GEM-related desktop sluggishness due to linear-time arch_get_unmapped_area

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1301409864.5615.98.camel@wangqingchuan>
Date:	Tue, 29 Mar 2011 22:44:24 +0800
From:	r6144 <rainy6144@...il.com>
To:	Jerome Glisse <j.glisse@...il.com>
Cc:	Lucas Stach <dev@...xeye.de>, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Subject: Re: GEM-related desktop sluggishness due to linear-time
 arch_get_unmapped_area_topdown()

在 2011-03-29二的 10:22 -0400，Jerome Glisse写道：

> Killer solution would be to have no mapping and a decent
> upload/download ioctl that can take userpage.

Doesn't this sound like GEM's read/write interface implemented by e.g.
the i915 driver?  But if I understand correctly, a mmap-like interface
should still be necessary if we want to implement e.g. glMapBuffer()
without extra copying.

r6144

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/