On Fri, May 11, 2018 at 09:57:52AM +0200, Martijn Coenen wrote:
On Sat, May 5, 2018 at 2:10 PM, kbuild test robot <lkp@xxxxxxxxx> wrote:
drivers/android/binder.o: In function `binder_thread_write':
binder.c:(.text+0x6a16): undefined reference to `__get_user_bad'
Looks like m68k doesn't support 64-bit get_user(). I could just have
binder depend on !CONFIG_M68K, but there may be other architectures
still that don't support this. Another alternative would be to
whitelist the architectures Android supports - eg arm, arm64, x86,
x86_64. But I'm not sure if arch-limited drivers are considered bad
form. Does anybody have suggestions for how to deal with this?
The proper fix is to just support 640bit get/put_user on m68k instead
of working around this.
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