[PATCH V4 1/2] arm64/sysreg: Update TCR_EL1 register

Anshuman Khandual anshuman.khandual at arm.com
Mon Sep 8 20:50:26 PDT 2025



On 08/09/25 7:28 PM, Mark Brown wrote:
> On Sun, Sep 07, 2025 at 05:59:59PM +0530, Anshuman Khandual wrote:
> 
>> Update TCR_EL1 register fields as per latest ARM ARM DDI 0487 L.B and while
>> here drop an explicit sysreg definition SYS_TCR_EL1 from sysreg.h, which is
>> now redundant.
> 
> I actually checked against DDI0601 2025-06 to spare my poor machine the
> strain of loading the ARM.

Right, they are the same.
> 
> Reviewed-by: Mark Brown <broonie at kernel.org>

Thanks !
> 
> I guess the cleanup of the redundant definition could've been a separate
> patch but it's not super important.

Dropping SYS_TCR_EL1 definition from header (asm/sysreg.h)
into a separate patch ?

#define SYS_TCR_EL1 	sys_reg(3, 0, 2, 0, 2)



More information about the linux-arm-kernel mailing list