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
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