arm64: mm: Use asid feature macro for cheanup

The commit ef25c51d09af ("KVM: arm64: Add feature register flag
definitions") introduce the ID_AA64MMFR0_ASID_8 and ID_AA64MMFR0_ASID_16
macros.

We can use these macros for cheanup in get_cpu_asid_bits().

No functional change.

Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Link: https://lore.kernel.org/r/f71c75d3-735e-b32a-8414-b3e513c77240@huawei.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c
index bbc2708fe9289c58a3d65b492bc9e92065ab4e6e..b8b4cf0bcf39b795c6703a90d73c2b2712cf2efd 100644 (file)
--- a/arch/arm64/mm/context.c
+++ b/arch/arm64/mm/context.c
@@ -50,10 +50,10 @@ static u32 get_cpu_asid_bits(void)
                pr_warn("CPU%d: Unknown ASID size (%d); assuming 8-bit\n",
                                        smp_processor_id(),  fld);
                fallthrough;
-       case 0:
+       case ID_AA64MMFR0_ASID_8:
                asid = 8;
                break;
-       case 2:
+       case ID_AA64MMFR0_ASID_16:
                asid = 16;
        }