diff options
Diffstat (limited to 'arch/powerpc/mm/pgtable_64.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable_64.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 8bca7f58afc4..db93cf747a03 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -52,6 +52,7 @@ #include <asm/sections.h> #include <asm/firmware.h> #include <asm/dma.h> +#include <asm/powernv.h> #include "mmu_decl.h" @@ -436,6 +437,7 @@ void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift) void __init mmu_partition_table_init(void) { unsigned long patb_size = 1UL << PATB_SIZE_SHIFT; + unsigned long ptcr; BUILD_BUG_ON_MSG((PATB_SIZE_SHIFT > 36), "Partition table size too large."); partition_tb = __va(memblock_alloc_base(patb_size, patb_size, @@ -448,19 +450,31 @@ void __init mmu_partition_table_init(void) * update partition table control register, * 64 K size. */ - mtspr(SPRN_PTCR, __pa(partition_tb) | (PATB_SIZE_SHIFT - 12)); + ptcr = __pa(partition_tb) | (PATB_SIZE_SHIFT - 12); + mtspr(SPRN_PTCR, ptcr); + powernv_set_nmmu_ptcr(ptcr); } void mmu_partition_table_set_entry(unsigned int lpid, unsigned long dw0, unsigned long dw1) { + unsigned long old = be64_to_cpu(partition_tb[lpid].patb0); + partition_tb[lpid].patb0 = cpu_to_be64(dw0); partition_tb[lpid].patb1 = cpu_to_be64(dw1); - /* Global flush of TLBs and partition table caches for this lpid */ + /* + * Global flush of TLBs and partition table caches for this lpid. + * The type of flush (hash or radix) depends on what the previous + * use of this partition ID was, not the new use. + */ asm volatile("ptesync" : : : "memory"); - asm volatile(PPC_TLBIE_5(%0,%1,2,0,0) : : - "r" (TLBIEL_INVAL_SET_LPID), "r" (lpid)); + if (old & PATB_HR) + asm volatile(PPC_TLBIE_5(%0,%1,2,0,1) : : + "r" (TLBIEL_INVAL_SET_LPID), "r" (lpid)); + else + asm volatile(PPC_TLBIE_5(%0,%1,2,0,0) : : + "r" (TLBIEL_INVAL_SET_LPID), "r" (lpid)); asm volatile("eieio; tlbsync; ptesync" : : : "memory"); } EXPORT_SYMBOL_GPL(mmu_partition_table_set_entry); |