| Message ID | 1453979254-25374-3-git-send-email-ard.biesheuvel@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
On Thu, Jan 28, 2016 at 12:07:33PM +0100, Ard Biesheuvel wrote: > The EFI stub is typically built into the decompressor (x86, ARM) so none > of its symbols are annotated as __init. However, on arm64, the stub is > linked into the kernel proper, and the code is __init annotated at the > section level by prepending all names of SHF_ALLOC sections with '.init'. > > This results in section names like .init.rodata.str1.8 (for string literals) > and .init.bss (which is tiny), both of which can be moved into the .init.data > output section. > > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> > --- > arch/arm64/kernel/vmlinux.lds.S | 1 + > 1 file changed, 1 insertion(+) Acked-by: Will Deacon <will.deacon@arm.com> Will > diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S > index e3928f578891..cbf4db440e9c 100644 > --- a/arch/arm64/kernel/vmlinux.lds.S > +++ b/arch/arm64/kernel/vmlinux.lds.S > @@ -134,6 +134,7 @@ SECTIONS > CON_INITCALL > SECURITY_INITCALL > INIT_RAM_FS > + *(.init.rodata.* .init.bss) /* from the EFI stub */ > } > .exit.data : { > ARM_EXIT_KEEP(EXIT_DATA) > -- > 2.5.0 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S index e3928f578891..cbf4db440e9c 100644 --- a/arch/arm64/kernel/vmlinux.lds.S +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -134,6 +134,7 @@ SECTIONS CON_INITCALL SECURITY_INITCALL INIT_RAM_FS + *(.init.rodata.* .init.bss) /* from the EFI stub */ } .exit.data : { ARM_EXIT_KEEP(EXIT_DATA)
The EFI stub is typically built into the decompressor (x86, ARM) so none of its symbols are annotated as __init. However, on arm64, the stub is linked into the kernel proper, and the code is __init annotated at the section level by prepending all names of SHF_ALLOC sections with '.init'. This results in section names like .init.rodata.str1.8 (for string literals) and .init.bss (which is tiny), both of which can be moved into the .init.data output section. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> --- arch/arm64/kernel/vmlinux.lds.S | 1 + 1 file changed, 1 insertion(+) -- 2.5.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel