powerpc/mm: Add radix flush all with IS=3

[mirror_ubuntu-zesty-kernel.git] / arch / powerpc / mm / tlb-radix.c

diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c
index 48df05ef523100e9aa67eb29fadf8b22cd116daf..0e49ec541ab57c91fbf568947cf02ac4f9bbe1ac 100644 (file)
--- a/arch/powerpc/mm/tlb-radix.c
+++ b/arch/powerpc/mm/tlb-radix.c
@@ -400,3 +400,27 @@ void radix__flush_pmd_tlb_range(struct vm_area_struct *vma,
        radix__flush_tlb_range_psize(vma->vm_mm, start, end, MMU_PAGE_2M);
 }
 EXPORT_SYMBOL(radix__flush_pmd_tlb_range);
+
+void radix__flush_tlb_all(void)
+{
+       unsigned long rb,prs,r,rs;
+       unsigned long ric = RIC_FLUSH_ALL;
+
+       rb = 0x3 << PPC_BITLSHIFT(53); /* IS = 3 */
+       prs = 0; /* partition scoped */
+       r = 1;   /* raidx format */
+       rs = 1 & ((1UL << 32) - 1); /* any LPID value to flush guest mappings */
+
+       asm volatile("ptesync": : :"memory");
+       /*
+        * now flush guest entries by passing PRS = 1 and LPID != 0
+        */
+       asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
+                    : : "r"(rb), "i"(r), "i"(1), "i"(ric), "r"(rs) : "memory");
+       /*
+        * now flush host entires by passing PRS = 0 and LPID == 0
+        */
+       asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
+                    : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(0) : "memory");
+       asm volatile("eieio; tlbsync; ptesync": : :"memory");
+}