[PATCH v2 09/11] arm64: Convert CONFIG_ARM64_POE to FTR_CONFIG()

[Marc Zyngier]

While CONFIG_ARM64_POE=n prevents userspace from using S1POE,
the sanitised ID registers still advertise the feature.

Make it clear that nothing in the kernel should rely on this by
marking the feature as hidden for all when CONFIG_ARM64_POE=n.

Signed-off-by: Marc Zyngier <maz at kernel.org>
---
 arch/arm64/kernel/cpufeature.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index a56d242fe1489..1af5f5b0c48a7 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -504,7 +504,7 @@ static const struct arm64_ftr_bits ftr_id_aa64mmfr2[] = {
 };
 
 static const struct arm64_ftr_bits ftr_id_aa64mmfr3[] = {
-	ARM64_FTR_BITS(FTR_VISIBLE_IF_IS_ENABLED(CONFIG_ARM64_POE),
+	ARM64_FTR_BITS(FTR_CONFIG(CONFIG_ARM64_POE, VISIBLE, ALL_HIDDEN),
 		       FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR3_EL1_S1POE_SHIFT, 4, 0),
 	ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_AA64MMFR3_EL1_S1PIE_SHIFT, 4, 0),
 	ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64MMFR3_EL1_SCTLRX_SHIFT, 4, 0),
-- 
2.47.3