Commit c048ddf8 authored Sep 04, 2020 by Anshuman Khandual Committed by Will Deacon Sep 07, 2020

arm64/mm/ptdump: Add address markers for BPF regions



Kernel virtual region [BPF_JIT_REGION_START..BPF_JIT_REGION_END] is missing
from address_markers[], hence relevant page table entries are not displayed
with /sys/kernel/debug/kernel_page_tables. This adds those missing markers.
While here, also rename arch/arm64/mm/dump.c which sounds bit ambiguous, as
arch/arm64/mm/ptdump.c instead.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Steven Price <steven.price@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Link: https://lore.kernel.org/r/1599208259-11191-1-git-send-email-anshuman.khandual@arm.com


Signed-off-by: Will Deacon <will@kernel.org>

parent f75aef39

arch/arm64/mm/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -4,7 +4,7 @@ obj-y := dma-mapping.o extable.o fault.o init.o \
		ioremap.o mmap.o pgd.o mmu.o \
		context.o proc.o pageattr.o
		obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
		obj-$(CONFIG_PTDUMP_CORE) += dump.o
		obj-$(CONFIG_PTDUMP_CORE) += ptdump.o
		obj-$(CONFIG_PTDUMP_DEBUGFS) += ptdump_debugfs.o
		obj-$(CONFIG_NUMA) += numa.o
		obj-$(CONFIG_DEBUG_VIRTUAL) += physaddr.o

arch/arm64/mm/dump.c→arch/arm64/mm/ptdump.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -41,6 +41,8 @@ static struct addr_marker address_markers[] = {
		{ 0 /* KASAN_SHADOW_START */, "Kasan shadow start" },
		{ KASAN_SHADOW_END, "Kasan shadow end" },
		#endif
		{ BPF_JIT_REGION_START, "BPF start" },
		{ BPF_JIT_REGION_END, "BPF end" },
		{ MODULES_VADDR, "Modules start" },
		{ MODULES_END, "Modules end" },
		{ VMALLOC_START, "vmalloc() area" },

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