Re: [PATCH 4/4] arm: use correct argument size of special registers

On Wed, May 27, 2020 at 08:04:24PM +0200, Heinrich Schuchardt wrote:

Compiling with clang on ARMv8 shows errors like:

./arch/arm/include/asm/system.h:162:32: note: use constraint modifier "w" asm volatile("msr sctlr_el1, %0" : : "r" (val) : "cc"); ^~ %w0

These errors are due to using an incorrect size for the variables used for writing to and reading from special registers which have 64 bits on ARMv8.

Mask off reserved bits when reading the exception level.

Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de

Applied to u-boot/master, thanks!