From: Christophe Leroy Date: Wed, 8 Jan 2025 18:40:38 +0000 (+0100) Subject: powerpc/32: Stop printing Kernel virtual memory layout X-Git-Tag: v6.15-rc1~133^2~42 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=2bf3caa7cc3b725eb671fb7e186daf685089eb86;p=thirdparty%2Flinux.git powerpc/32: Stop printing Kernel virtual memory layout Printing of Kernel virtual memory layout was added for debug purpose by commit f637a49e507c ("powerpc: Minor cleanups of kernel virt address space definitions") For security reasons, don't display the kernel's virtual memory layout. Other architectures have removed it through following commits. Commit 071929dbdd86 ("arm64: Stop printing the virtual memory layout") Commit 1c31d4e96b8c ("ARM: 8820/1: mm: Stop printing the virtual memory layout") Commit 31833332f798 ("m68k/mm: Stop printing the virtual memory layout") Commit fd8d0ca25631 ("parisc: Hide virtual kernel memory layout") Commit 681ff0181bbf ("x86/mm/init/32: Stop printing the virtual memory layout") Commit 681ff0181bbf ("x86/mm/init/32: Stop printing the virtual memory layout") thought x86 was the last one, but in reality powerpc/32 still had it. So remove it now on powerpc/32 as well. Signed-off-by: Christophe Leroy Reviewed-by: Kees Cook [Maddy: Added "Commit" in commit message to avoid checkpatch error] Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/430bc8c1f2ff2eb9224b04450e22db472b0b9fa9.1736361630.git.christophe.leroy@csgroup.eu --- diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index c7708c8fad299..34806c858e540 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -319,28 +319,6 @@ void __init mem_init(void) per_cpu(next_tlbcam_idx, smp_processor_id()) = (mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY) - 1; #endif - -#ifdef CONFIG_PPC32 - pr_info("Kernel virtual memory layout:\n"); -#ifdef CONFIG_KASAN - pr_info(" * 0x%08lx..0x%08lx : kasan shadow mem\n", - KASAN_SHADOW_START, KASAN_SHADOW_END); -#endif - pr_info(" * 0x%08lx..0x%08lx : fixmap\n", FIXADDR_START, FIXADDR_TOP); -#ifdef CONFIG_HIGHMEM - pr_info(" * 0x%08lx..0x%08lx : highmem PTEs\n", - PKMAP_BASE, PKMAP_ADDR(LAST_PKMAP)); -#endif /* CONFIG_HIGHMEM */ - if (ioremap_bot != IOREMAP_TOP) - pr_info(" * 0x%08lx..0x%08lx : early ioremap\n", - ioremap_bot, IOREMAP_TOP); - pr_info(" * 0x%08lx..0x%08lx : vmalloc & ioremap\n", - VMALLOC_START, VMALLOC_END); -#ifdef MODULES_VADDR - pr_info(" * 0x%08lx..0x%08lx : modules\n", - MODULES_VADDR, MODULES_END); -#endif -#endif /* CONFIG_PPC32 */ } void free_initmem(void)