arm64: mm: remove unused cpu_set_idmap_tcr_t0sz function

With commit b08d4640a3dc ("arm64: remove dead code"),
cpu_set_idmap_tcr_t0sz is no longer called and can therefore be removed
from the kernel.

This patch removes the function and effectively inlines the helper
function __cpu_set_tcr_t0sz into cpu_set_default_tcr_t0sz.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

1 files changed, 12 insertions, 23 deletions

diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h
index 8ec41e5f56f0..549b89554ce8 100644
--- a/arch/arm64/include/asm/mmu_context.h
+++ b/arch/arm64/include/asm/mmu_context.h
@@ -77,34 +77,23 @@ static inline bool __cpu_uses_extended_idmap(void)
                 unlikely(idmap_t0sz != TCR_T0SZ(VA_BITS)));
 }
 
-static inline void __cpu_set_tcr_t0sz(u64 t0sz)
-{
-        unsigned long tcr;
-
-        if (__cpu_uses_extended_idmap())
-                asm volatile (
-                "       mrs     %0, tcr_el1     ;"
-                "       bfi     %0, %1, %2, %3  ;"
-                "       msr     tcr_el1, %0     ;"
-                "       isb"
-                : "=&r" (tcr)
-                : "r"(t0sz), "I"(TCR_T0SZ_OFFSET), "I"(TCR_TxSZ_WIDTH));
-}
-
-/*
- * Set TCR.T0SZ to the value appropriate for activating the identity map.
- */
-static inline void cpu_set_idmap_tcr_t0sz(void)
-{
-        __cpu_set_tcr_t0sz(idmap_t0sz);
-}
-
 /*
  * Set TCR.T0SZ to its default value (based on VA_BITS)
  */
 static inline void cpu_set_default_tcr_t0sz(void)
 {
-        __cpu_set_tcr_t0sz(TCR_T0SZ(VA_BITS));
+        unsigned long tcr;
+
+        if (!__cpu_uses_extended_idmap())
+                return;
+
+        asm volatile (
+        "       mrs     %0, tcr_el1     ;"
+        "       bfi     %0, %1, %2, %3  ;"
+        "       msr     tcr_el1, %0     ;"
+        "       isb"
+        : "=&r" (tcr)
+        : "r"(TCR_T0SZ(VA_BITS)), "I"(TCR_T0SZ_OFFSET), "I"(TCR_TxSZ_WIDTH));
 }
 
 static inline void switch_new_context(struct mm_struct *mm)