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| author |   Christophe Leroy <christophe.leroy@csgroup.eu> | 2025-01-08 19:40:38 +0100 |
|---|---|---|
| committer |   Madhavan Srinivasan <maddy@linux.ibm.com> | 2025-02-24 12:26:21 +0530 |
| commit | 2bf3caa7cc3b725eb671fb7e186daf685089eb86 (patch) | |
| tree | ec4043bd374744d4dbece7f8f11282dd6bfdee47 /arch/powerpc/mm | |
| parent | powerpc/vmlinux: Remove etext, edata and end (diff) | |
| download | wireguard-linux-2bf3caa7cc3b725eb671fb7e186daf685089eb86.tar.xz wireguard-linux-2bf3caa7cc3b725eb671fb7e186daf685089eb86.zip | |
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 <christophe.leroy@csgroup.eu>
Reviewed-by: Kees Cook <kees@kernel.org>
[Maddy: Added "Commit" in commit message to avoid checkpatch error]
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/430bc8c1f2ff2eb9224b04450e22db472b0b9fa9.1736361630.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index c7708c8fad29..34806c858e54 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) |