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| author | Miles Chen <miles.chen@mediatek.com> | 2018-12-12 13:56:49 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-14 12:33:49 +0300 |
| commit | 12f799c8c739518e12248bbd000eb0a246e8e5f8 (patch) | |
| tree | 8e899cb33d47d7921e0b0e1d511101d178fbe43d /arch/arm64/kernel/setup.c | |
| parent | 97bebc5facf7d495e72df0b7c50be3699c7bdd73 (diff) | |
| download | linux-12f799c8c739518e12248bbd000eb0a246e8e5f8.tar.xz | |
arm64: kaslr: print PHYS_OFFSET in dump_kernel_offset()
When debug with kaslr, it is sometimes necessary to have PHYS_OFFSET to
perform linear virtual address to physical address translation.
Sometimes we're debugging with only few information such as a kernel log
and a symbol file, print PHYS_OFFSET in dump_kernel_offset() for that case.
Tested by:
echo c > /proc/sysrq-trigger
[ 11.996161] SMP: stopping secondary CPUs
[ 11.996732] Kernel Offset: 0x2522200000 from 0xffffff8008000000
[ 11.996881] PHYS_OFFSET: 0xffffffeb40000000
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/setup.c')
| -rw-r--r-- | arch/arm64/kernel/setup.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index f4fc1e0544b7..4b0e1231625c 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -388,6 +388,7 @@ static int dump_kernel_offset(struct notifier_block *self, unsigned long v, if (IS_ENABLED(CONFIG_RANDOMIZE_BASE) && offset > 0) { pr_emerg("Kernel Offset: 0x%lx from 0x%lx\n", offset, KIMAGE_VADDR); + pr_emerg("PHYS_OFFSET: 0x%llx\n", PHYS_OFFSET); } else { pr_emerg("Kernel Offset: disabled\n"); } |