From: Michael Ellerman <mpe@ellerman.id.au>
To: Alexey Kardashevskiy <aik@ozlabs.ru>, linuxppc-dev@lists.ozlabs.org
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
Paul Mackerras <paulus@samba.org>,
linux-kernel@vger.kernel.org
Subject: Re: [kernel] powerpc: Make vmalloc_to_phys() public
Date: Mon, 25 Jan 2016 16:46:03 +1100 (AEDT) [thread overview]
Message-ID: <20160125054603.5D55B140326@ozlabs.org> (raw)
In-Reply-To: <1453361708-19422-1-git-send-email-aik@ozlabs.ru>
On Thu, 2016-21-01 at 07:35:08 UTC, Alexey Kardashevskiy wrote:
> This makes vmalloc_to_phys() public as there will be another user
> (in-kernel VFIO acceleration) for it soon.
>
> As a part of future little optimization, this changes the helper to call
> vmalloc_to_pfn() instead of vmalloc_to_page() as the size of the
> struct page may not be power-of-two aligned which will make gcc use
> multiply instructions instead of shifts.
You should also mention why you need to export it, presumably because whatever
new user you have in mind can be built as a module.
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
cheers
next prev parent reply other threads:[~2016-01-25 5:46 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-21 7:35 [PATCH kernel] powerpc: Make vmalloc_to_phys() public Alexey Kardashevskiy
2016-01-25 5:46 ` Michael Ellerman [this message]
2016-01-25 6:21 ` [kernel] " Anshuman Khandual
2016-01-25 10:06 ` Paul Mackerras
2016-01-27 3:19 ` Alexey Kardashevskiy
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=20160125054603.5D55B140326@ozlabs.org \
--to=mpe@ellerman.id.au \
--cc=aik@ozlabs.ru \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=paulus@samba.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).