Re: [PATCH v7 22/27] binfmt_elf: Extract .note.gnu.property from an ELF file

[Peter Zijlstra]

On Thu, Jun 06, 2019 at 01:06:41PM -0700, Yu-cheng Yu wrote:
> An ELF file's .note.gnu.property indicates features the executable file
> can support.  For example, the property GNU_PROPERTY_X86_FEATURE_1_AND
> indicates the file supports GNU_PROPERTY_X86_FEATURE_1_IBT and/or
> GNU_PROPERTY_X86_FEATURE_1_SHSTK.
> 
> With this patch, if an arch needs to setup features from ELF properties,
> it needs CONFIG_ARCH_USE_GNU_PROPERTY to be set, and a specific
> arch_setup_property().
> 
> For example, for X86_64:
> 
> int arch_setup_property(void *ehdr, void *phdr, struct file *f, bool inter)
> {
> 	int r;
> 	uint32_t property;
> 
> 	r = get_gnu_property(ehdr, phdr, f, GNU_PROPERTY_X86_FEATURE_1_AND,
> 			     &property);
> 	...
> }
> 
> Signed-off-by: H.J. Lu <hjl.tools@xxxxxxxxx>
> Signed-off-by: Yu-cheng Yu <yu-cheng.yu@xxxxxxxxx>

Did HJ write this patch as suggested by that SoB chain? If so, you lost
a From: line on top, if not, the SoB thing is invalid.