Messages in this thread | | | Date | Mon, 15 May 2017 15:27:29 +0100 | From | Matt Fleming <> | Subject | Re: [PATCH V2] x86/efi: Add EFI_PGT_DUMP support for x86_32, kexec |
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On Thu, 11 May, at 12:20:33PM, Sai Praneeth Prakhya wrote: > From: Sai Praneeth <sai.praneeth.prakhya@intel.com> > > EFI_PGT_DUMP, as the name suggests dumps efi page tables to dmesg 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> > Cc: Borislav Petkov <bp@alien8.de> > Cc: Ricardo Neri <ricardo.neri@intel.com> > Cc: Matt Fleming <matt@codeblueprint.co.uk> > Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> > Cc: Ravi Shankar <ravi.v.shankar@intel.com> > > Changes since v1: > 1. Call efi_dump_pagetable() only once from efi_enter_virtual_mode() - > as suggested by Boris > > --- > arch/x86/platform/efi/efi.c | 3 ++- > arch/x86/platform/efi/efi_32.c | 9 ++++++++- > arch/x86/platform/efi/efi_64.c | 5 ++++- > 3 files changed, 14 insertions(+), 3 deletions(-)
Thanks Sai, applied.
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