On Tue, Jul 21, 2020 at 3:37 PM Dmitry Osipenko [off-list ref] wrote:

This patch was merged into a recent linux-next, unfortunately it breaks
CONFIG_THUMB2_KERNEL=y compilation:

arch/arm/kernel/entry-common.S: Assembler messages:
arch/arm/kernel/entry-common.S:159: Error: r13 not allowed here -- `bic
tsk,sp,#(((1<<12)<<1)-1)&~63'
arch/arm/kernel/entry-common.S:246: Error: r13 not allowed here -- `bic
tsk,sp,#(((1<<12)<<1)-1)&~63'
make[2]: *** [scripts/Makefile.build:361:
arch/arm/kernel/entry-common.o] Error 1

Ah how typical. I suppose we simply need to give up on this
idea to simplify using BIC. It was worth a try.

Yours,
Linus Walleij

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