From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Fri, 10 Feb 2017 10:13:29 +0000 Subject: [PATCH v2 05/14] arm64: efi: remove forbidden values from the PE/COFF header In-Reply-To: <1486554947-3964-6-git-send-email-ard.biesheuvel@linaro.org> References: <1486554947-3964-1-git-send-email-ard.biesheuvel@linaro.org> <1486554947-3964-6-git-send-email-ard.biesheuvel@linaro.org> Message-ID: <20170210101329.GD28753@leverpostej> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Feb 08, 2017 at 11:55:38AM +0000, Ard Biesheuvel wrote: > Bring the PE/COFF header in line with the PE/COFF spec, by setting > NumberOfSymbols to 0, and removing the section alignment flags. > > Signed-off-by: Ard Biesheuvel I take it that in practice EFI implementations don't care about these? Assuming so: Acked-by: Mark Rutland Otherwise, we might want to fix this first, so that we can easily backport it. Thanks, Mark. > --- > arch/arm64/kernel/efi-header.S | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/arch/arm64/kernel/efi-header.S b/arch/arm64/kernel/efi-header.S > index 9b24ce130afb..515624bbfcd0 100644 > --- a/arch/arm64/kernel/efi-header.S > +++ b/arch/arm64/kernel/efi-header.S > @@ -15,7 +15,7 @@ coff_header: > .short 2 // nr_sections > .long 0 // TimeDateStamp > .long 0 // PointerToSymbolTable > - .long 1 // NumberOfSymbols > + .long 0 // NumberOfSymbols > .short section_table - optional_header // SizeOfOptionalHeader > .short 0x206 // Characteristics. > // IMAGE_FILE_DEBUG_STRIPPED | > @@ -88,7 +88,7 @@ section_table: > .long 0 // PointerToLineNumbers > .short 0 // NumberOfRelocations > .short 0 // NumberOfLineNumbers > - .long 0x42100040 // Characteristics (section flags) > + .long 0x42000040 // Characteristics (section flags) > > > .ascii ".text" > @@ -104,7 +104,7 @@ section_table: > .long 0 // PointerToLineNumbers > .short 0 // NumberOfRelocations > .short 0 // NumberOfLineNumbers > - .long 0xe0500020 // Characteristics > + .long 0xe0000020 // Characteristics > > #ifdef CONFIG_DEBUG_EFI > /* > -- > 2.7.4 >