Re: [PATCH RESEND] arch/microblaze: add support for get_user() of size 8 bytes

From: Randy Dunlap
Date: Sun Sep 01 2019 - 10:55:41 EST

On 8/31/19 11:49 PM, Leon Romanovsky wrote:
> On Sat, Aug 31, 2019 at 08:40:05PM -0700, Randy Dunlap wrote:
>> From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
>> arch/microblaze/ is missing support for get_user() of size 8 bytes,
>> so add it by using __copy_from_user().
>> Fixes these build errors:
>> drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write':
>> drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined reference to `__user_bad'
>> drivers/android/binder.o: In function `binder_thread_write':
>> drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to `__user_bad'
>> drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to `__user_bad'
>> drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to `__user_bad'
>> drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to `__user_bad'
>> drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78): more undefined references to `__user_bad' follow
>> 'make allmodconfig' now builds successfully for arch/microblaze/.
>> Fixes: 538722ca3b76 ("microblaze: fix get_user/put_user side-effects")
>> Reported-by: kbuild test robot <lkp@xxxxxxxxx>
>> Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
>> Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
>> Cc: Steven J. Magnani <steve@xxxxxxxxxxxxxxx>
>> Cc: Michal Simek <monstr@xxxxxxxxx>
>> Cc: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
>> Cc: Leon Romanovsky <leonro@xxxxxxxxxxxx>
>> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
>> Cc: Doug Ledford <dledford@xxxxxxxxxx>
>> Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
>> ---
>> What is a reasonable path for having this patch merged?
>> Leon Romanovsky <leonro@xxxxxxxxxxxx> has tested it.
> I tested it for compilation only, we (RDMA) don't work on
> arch/microblaze/ at all and care about kbuild failures only.

Hi Leon,
Since I modified the patch (about to send v3), I dropped your