From c048ddf86cdd066db283ce838a0049d2bbefb9e5 Mon Sep 17 00:00:00 2001 From: Anshuman Khandual Date: Fri, 4 Sep 2020 14:00:59 +0530 Subject: [PATCH] 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 Reviewed-by: Steven Price Cc: Catalin Marinas Cc: Will Deacon Cc: Ard Biesheuvel Cc: Steven Price Cc: Andrew Morton 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 --- arch/arm64/mm/Makefile | 2 +- arch/arm64/mm/{dump.c => ptdump.c} | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) rename arch/arm64/mm/{dump.c => ptdump.c} (99%) diff --git a/arch/arm64/mm/Makefile b/arch/arm64/mm/Makefile index d91030f0ffeee..2a1d275cd4d75 100644 --- a/arch/arm64/mm/Makefile +++ b/arch/arm64/mm/Makefile @@ -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 diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/ptdump.c similarity index 99% rename from arch/arm64/mm/dump.c rename to arch/arm64/mm/ptdump.c index 0b8da1cc1c07e..265284dc942df 100644 --- a/arch/arm64/mm/dump.c +++ b/arch/arm64/mm/ptdump.c @@ -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" }, -- 2.30.2