CVS commit: src/sys/arch/aarch64

["Ryo Shimizu" <ryo%netbsd.org@localhost>]

Module Name:    src
Committed By:   ryo
Date:           Wed Jul  1 07:59:16 UTC 2020

Modified Files:
        src/sys/arch/aarch64/aarch64: cpu.c cpufunc.c cpufunc_asm_armv8.S
        src/sys/arch/aarch64/include: cpu.h cpufunc.h

Log Message:
Switch the Icache sync operation to the necessary and sufficient one according to the CTR_EL0.DIC and CTR_EL0.IDC flags.

If CTR_EL0.DIC=1, Icache invalidation is not required.
If CTR_EL0.IDC=1, Dcache clean before Icache invalidation is not required.
CLIDR_EL1.LoC is 0, or CLIDR_EL1.LoUIS and CLIDR_EL1.LoUU are 0, Dcache clean is not required as well.

SEE ALSO ARMARM, "CTR_EL0 Cache Type Register", and "CLIDR_EL1 Cache Level ID Register"


To generate a diff of this commit:
cvs rdiff -u -r1.50 -r1.51 src/sys/arch/aarch64/aarch64/cpu.c
cvs rdiff -u -r1.20 -r1.21 src/sys/arch/aarch64/aarch64/cpufunc.c
cvs rdiff -u -r1.5 -r1.6 src/sys/arch/aarch64/aarch64/cpufunc_asm_armv8.S
cvs rdiff -u -r1.23 -r1.24 src/sys/arch/aarch64/include/cpu.h
cvs rdiff -u -r1.15 -r1.16 src/sys/arch/aarch64/include/cpufunc.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.