powerpc/64s: Remove POWER9 DD1 support

POWER9 DD1 was never a product. It is no longer supported by upstream
firmware, and it is not effectively supported in Linux due to lack of
testing.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au>
[mpe: Remove arch_make_huge_pte() entirely]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 2 insertions, 10 deletions

diff --git a/arch/powerpc/mm/mmu_context_book3s64.c b/arch/powerpc/mm/mmu_context_book3s64.c
index f3d4b4a0e561..39e9ef0eb78b 100644
--- a/arch/powerpc/mm/mmu_context_book3s64.c
+++ b/arch/powerpc/mm/mmu_context_book3s64.c
@@ -273,15 +273,7 @@ void arch_exit_mmap(struct mm_struct *mm)
 #ifdef CONFIG_PPC_RADIX_MMU
 void radix__switch_mmu_context(struct mm_struct *prev, struct mm_struct *next)
 {
-
-        if (cpu_has_feature(CPU_FTR_POWER9_DD1)) {
-                isync();
-                mtspr(SPRN_PID, next->context.id);
-                isync();
-                asm volatile(PPC_INVALIDATE_ERAT : : :"memory");
-        } else {
-                mtspr(SPRN_PID, next->context.id);
-                isync();
-        }
+        mtspr(SPRN_PID, next->context.id);
+        isync();
 }
 #endif