From: han jonghun <jonghun79.han@gmail.com>
To: linux-fbdev@vger.kernel.org
Subject: How to allocate framebuffer bigger than 4MB
Date: Mon, 04 Oct 2010 07:33:25 +0000 [thread overview]
Message-ID: <AANLkTinCCoQD8dpz_MPr-CcghrmHF0rEMYgtnaD-e9ht@mail.gmail.com> (raw)
Hi,
I have a question how to allocate framebuffer bigger than 4MB.
I usually allocate framebuffer via dma_alloc_writecombine.
When I use dma_alloc_writecombine, I can allocate framebuffer less
than 4MB due to MAX_ORDER(11).
Before 2.6.36, I allocated framebuffer via bootmem and then I remaped
the fb via ioremap_wc for non-cacheable operation.
But from 2.6.36, I cannot use ioremap_wc for the memory which is
allocate by kernel.
How can I allocate framebuffer bigger than 4MB ?
Can anyone help me?
Thanks
Best regards,
Jonhun Han.
reply other threads:[~2010-10-04 7:33 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=AANLkTinCCoQD8dpz_MPr-CcghrmHF0rEMYgtnaD-e9ht@mail.gmail.com \
--to=jonghun79.han@gmail.com \
--cc=linux-fbdev@vger.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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).