• Mark Rutland's avatar
    arm64: simplify sysreg manipulation · adf75899
    Mark Rutland authored
    A while back we added {read,write}_sysreg accessors to handle accesses
    to system registers, without the usual boilerplate asm volatile,
    temporary variable, etc.
    
    This patch makes use of these across arm64 to make code shorter and
    clearer. For sequences with a trailing ISB, the existing isb() macro is
    also used so that asm blocks can be removed entirely.
    
    A few uses of inline assembly for msr/mrs are left as-is. Those
    manipulating sp_el0 for the current thread_info value have special
    clobber requiremends.
    Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Will Deacon <will.deacon@arm.com>
    Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
    adf75899
sys_compat.c 2.72 KB