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| author |   Catalin Marinas <catalin.marinas@arm.com> | 2022-01-31 16:54:55 +0000 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2022-02-15 22:53:29 +0000 |
| commit | 6dd8b1a0b6cb3ed93d24110e02e67ff9d006610a (patch) | |
| tree | 4bbc7dd14cbcdf8fc6b960814d796e2cea96c538 /arch/arm64/kernel/Makefile | |
| parent | arm64: mte: Define the number of bytes for storing the tags in a page (diff) | |
| download | linux-dev-6dd8b1a0b6cb3ed93d24110e02e67ff9d006610a.tar.xz linux-dev-6dd8b1a0b6cb3ed93d24110e02e67ff9d006610a.zip | |
arm64: mte: Dump the MTE tags in the core file
For each vma mapped with PROT_MTE (the VM_MTE flag set), generate a
PT_ARM_MEMTAG_MTE segment in the core file and dump the corresponding
tags. The in-file size for such segments is 128 bytes per page.
For pages in a VM_MTE vma which are not present in the user page tables
or don't have the PG_mte_tagged flag set (e.g. execute-only), just write
zeros in the core file.
An example of program headers for two vmas, one 2-page, the other 4-page
long:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
...
LOAD 0x030000 0x0000ffff80034000 0x0000000000000000 0x000000 0x002000 RW 0x1000
LOAD 0x030000 0x0000ffff80036000 0x0000000000000000 0x004000 0x004000 RW 0x1000
...
LOPROC+0x1 0x05b000 0x0000ffff80034000 0x0000000000000000 0x000100 0x002000 0
LOPROC+0x1 0x05b100 0x0000ffff80036000 0x0000000000000000 0x000200 0x004000 0
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Luis Machado <luis.machado@linaro.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220131165456.2160675-5-catalin.marinas@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/Makefile')
| -rw-r--r-- | arch/arm64/kernel/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 88b3e2a21408..986837d7ec82 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -61,6 +61,7 @@ obj-$(CONFIG_ARM64_ACPI_PARKING_PROTOCOL) += acpi_parking_protocol.o obj-$(CONFIG_PARAVIRT) += paravirt.o obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate-asm.o +obj-$(CONFIG_ELF_CORE) += elfcore.o obj-$(CONFIG_KEXEC_CORE) += machine_kexec.o relocate_kernel.o \ cpu-reset.o obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file.o kexec_image.o |