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SubjectRe: [PATCH] staging: android: ashmem: Add support for 32bit ashmem calls in a 64bit kernel
On 05/03/13 08:37, Greg KH wrote:
> On Mon, Feb 25, 2013 at 06:44:36PM +0000, Serban Constantinescu wrote:
>> Android's shared memory subsystem, Ashmem, does not support calls from a
>> 32bit userspace in a 64 bit kernel. This patch adds support for syscalls
>> coming from a 32bit userspace in a 64bit kernel.
>> The patch has been successfully tested on ARMv8 AEM(64bit
>> platform model) and Versatile Express A9(32bit platform).
>> Signed-off-by: Serban Constantinescu <>
>> Acked-by: Arve Hjønnevåg <>
>> Acked-by: John Stultz <>
> This patch breaks the build on my machine:
> drivers/staging/android/ashmem.c: In function ‘compat_ashmem_ioctl’:
> drivers/staging/android/ashmem.c:711:7: error: ‘compat_size_t’ undeclared (first use in this function)
> drivers/staging/android/ashmem.c:711:7: note: each undeclared identifier is reported only once for each function it appears in

When building for x86_64 we need <linux/compat.h>. Sorry I forgot it,
should build fine now.

> so of course, I can't take it :(


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