On 04/09/2020 09:30, Anshuman Khandual wrote:
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.
Cc: Catalin Marinas <catalin.mari...@arm.com>
Cc: Will Deacon <w...@kernel.org>
Cc: Ard Biesheuvel <a...@kernel.org>
Cc: Steven Price <steven.pr...@arm.com>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khand...@arm.com>
LGTM
Reviewed-by: Steven Price <steven.pr...@arm.com>
---
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 d91030f0ffee..2a1d275cd4d7 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 0b8da1cc1c07..265284dc942d 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" },
