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| author | Sai Praneeth <sai.praneeth.prakhya@intel.com> | 2017-06-02 15:52:06 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-06-05 17:50:43 +0200 |
| commit | ac81d3de03f7d8593a94240d057c8e2e8e869897 (patch) | |
| tree | 69e84000abcc273e186046c16f703060dc2d0fbd /arch/arm64/kernel/efi.c | |
| parent | efi/efi_test: Use memdup_user() helper (diff) | |
| download | linux-ac81d3de03f7d8593a94240d057c8e2e8e869897.tar.xz linux-ac81d3de03f7d8593a94240d057c8e2e8e869897.zip | |
x86/efi: Extend CONFIG_EFI_PGT_DUMP support to x86_32 and kexec as well
CONFIG_EFI_PGT_DUMP=y, as the name suggests, dumps EFI page tables to the
kernel log during kernel boot.
This feature is very useful while debugging page faults/null pointer
dereferences to EFI related addresses.
Presently, this feature is limited only to x86_64, so let's extend it to
other EFI configurations like kexec kernel, efi=old_map and to x86_32 as well.
This doesn't effect normal boot path because this config option should
be used only for debug purposes.
Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Shankar <ravi.v.shankar@intel.com>
Cc: Ricardo Neri <ricardo.neri@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20170602135207.21708-13-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/efi.c')
0 files changed, 0 insertions, 0 deletions