[PATCH] powerpc/mm: Fix printing of process table address
From: Balbir Singh <bsingharora@gmail.com>
Date: 2018-03-28 03:09:43
New changes to %p cause the information printed at boot about radix-mmu partition and process table opaque, if we really want to protect those values, we should make dmesg more secure using CONFIG_SECURITY_DMESG_RESTRICT Before the patches: radix-mmu: Partition table (ptrval) radix-mmu: Process table (ptrval) and radix root for kernel: (ptrval) After the patches radix-mmu: Partition table c0000000ffff0000 radix-mmu: Process table c0000000fe000000 and radix root for kernel: c0000000015a0000 Signed-off-by: Balbir Singh <bsingharora@gmail.com> --- arch/powerpc/mm/pgtable-radix.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index 2e10a964e290..3f676e89c3a6 100644
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c@@ -329,7 +329,8 @@ static void __init radix_init_pgtable(void) * physical address here. */ register_process_table(__pa(process_tb), 0, PRTB_SIZE_SHIFT - 12); - pr_info("Process table %p and radix root for kernel: %p\n", process_tb, init_mm.pgd); + pr_info("Process table %px and radix root for kernel: %px\n", + process_tb, init_mm.pgd); asm volatile("ptesync" : : : "memory"); asm volatile(PPC_TLBIE_5(%0,%1,2,1,1) : : "r" (TLBIEL_INVAL_SET_LPID), "r" (0));
@@ -363,7 +364,7 @@ static void __init radix_init_partition_table(void) mmu_partition_table_set_entry(0, dw0, 0); pr_info("Initializing Radix MMU\n"); - pr_info("Partition table %p\n", partition_tb); + pr_info("Partition table %px\n", partition_tb); } void __init radix_init_native(void)
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2.13.6