From: Qian Cai <cai@lca.pw>
To: mpe@ellerman.id.au
Cc: linux-kernel@vger.kernel.org, Qian Cai <cai@lca.pw>,
aneesh.kumar@linux.ibm.com, paulus@samba.org,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH] powerpc/mm/radix: remove useless kernel messages
Date: Fri, 23 Aug 2019 10:22:00 -0400 [thread overview]
Message-ID: <1566570120-16529-1-git-send-email-cai@lca.pw> (raw)
Booting a POWER9 PowerNV system generates a few messages below with
"____ptrval____" due to the pointers printed without a specifier
extension (i.e unadorned %p) are hashed to prevent leaking information
about the kernel memory layout.
radix-mmu: Initializing Radix MMU
radix-mmu: Partition table (____ptrval____)
radix-mmu: Mapped 0x0000000000000000-0x0000000040000000 with 1.00 GiB
pages (exec)
radix-mmu: Mapped 0x0000000040000000-0x0000002000000000 with 1.00 GiB
pages
radix-mmu: Mapped 0x0000200000000000-0x0000202000000000 with 1.00 GiB
pages
radix-mmu: Process table (____ptrval____) and radix root for kernel:
(____ptrval____)
Signed-off-by: Qian Cai <cai@lca.pw>
---
arch/powerpc/mm/book3s64/radix_pgtable.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index b4ca9e95e678..b6692ee9411d 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -386,7 +386,6 @@ 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);
asm volatile("ptesync" : : : "memory");
asm volatile(PPC_TLBIE_5(%0,%1,2,1,1) : :
"r" (TLBIEL_INVAL_SET_LPID), "r" (0));
@@ -420,7 +419,6 @@ 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);
}
void __init radix_init_native(void)
--
1.8.3.1
next reply other threads:[~2019-08-23 14:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-23 14:22 Qian Cai [this message]
2019-09-12 13:48 ` [PATCH] powerpc/mm/radix: remove useless kernel messages Qian Cai
2019-09-19 10:25 ` Michael Ellerman
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