From: Serban Constantinescu <Serban.Constantinescu@arm.com>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"kernel-team@android.com" <kernel-team@android.com>,
"arve@android.com" <arve@android.com>,
"john.stultz@linaro.org" <john.stultz@linaro.org>,
Dave Butcher <Dave.Butcher@arm.com>
Subject: Re: [PATCH v3 0/6] Android Binder IPC Fixes
Date: Tue, 30 Apr 2013 11:09:34 +0100 [thread overview]
Message-ID: <517F985E.7040100@arm.com> (raw)
In-Reply-To: <20130430100431.GA3973@shutemov.name>
On 30/04/13 11:04, Kirill A. Shutemov wrote:
> On Tue, Apr 30, 2013 at 09:52:34AM +0100, Serban Constantinescu wrote:
>> Hi Kirill,
>>
>> On 30/04/13 08:31, Kirill A. Shutemov wrote:
>>> On Fri, Apr 12, 2013 at 01:25:49PM +0100, Serban Constantinescu wrote:
>>>> The patch set has been successfully tested with a 64bit Linux userspace and
>>>> 64bit binder unit-tests.
>>>>
>>>> This patch set has been successfully tested on 32bit platforms(ARMv7 VExpress)
>>>> and 64bit platforms(ARMv8 RTSM) running a 32bit Android userspace and an in
>>>> kernel binder compat layer.
>>>
>>> I've tried to replace ugly hack with your patches to be able to boot
>>> 32-bit userspace on x86-64. It fails. :(
>>>
>>
>> This patch set fixes the binder interface so that it works on 32/32
>> or 64/64 systems and preps the driver for the compat layer - 64bit
>> kernel/32bit userspace. As discussed with the Android developers the
>> binder compat will live in the userspace.
>
> Does the compat layer already exist or it's a plan?
We were working with a kernel compat layer. However this wasn't
encouraged by the Android developers who would prefer a userspace binder
compat.
The changes in this patch set fix the kernel interface so that it will
work with the yet to be developed userspace wrapper.
Some support for 64/32 systems has already been integrated - see ashmem.
Thanks,
Serban
prev parent reply other threads:[~2013-04-30 10:09 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-12 12:25 [PATCH v3 0/6] Android Binder IPC Fixes Serban Constantinescu
2013-04-12 12:25 ` [PATCH v3 1/6] staging: android: binder: modify struct binder_write_read to use size_t Serban Constantinescu
2013-04-12 12:25 ` [PATCH v3 2/6] staging: android: binder: fix binder interface for 64bit compat layer Serban Constantinescu
2013-04-12 12:25 ` [PATCH v3 3/6] staging: android: binder: fix BINDER_SET_MAX_THREADS declaration Serban Constantinescu
2013-04-12 12:25 ` [PATCH v3 4/6] staging: android: binder: fix BC_FREE_BUFFER ioctl declaration Serban Constantinescu
2013-04-12 12:25 ` [PATCH v3 5/6] staging: android: binder: fix alignment issues Serban Constantinescu
2013-04-12 12:25 ` [PATCH v3 6/6] staging: android: binder: replace types with portable ones Serban Constantinescu
2013-04-29 16:16 ` [PATCH v3 0/6] Android Binder IPC Fixes Serban Constantinescu
2013-04-29 23:13 ` Arve Hjønnevåg
2013-04-30 8:36 ` Serban Constantinescu
2013-04-30 23:52 ` Arve Hjønnevåg
2013-05-02 16:38 ` Serban Constantinescu
2013-04-30 7:31 ` Kirill A. Shutemov
2013-04-30 8:52 ` Serban Constantinescu
2013-04-30 10:04 ` Kirill A. Shutemov
2013-04-30 10:09 ` Serban Constantinescu [this message]
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