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Re: [PATCH v4 2/2] livepatch: set -f{function,data}-sections compiler option
- To: Roger Pau Monne <roger.pau@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>
- Date: Wed, 9 Mar 2022 14:58:06 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHYM7F5J3x9C8ot2EWO/SfgpDadpqy3JMcA
- Thread-topic: [PATCH v4 2/2] livepatch: set -f{function,data}-sections compiler option
On 09/03/2022 12:28, Roger Pau Monne wrote:
> diff --git a/xen/arch/x86/xen.lds.S b/xen/arch/x86/xen.lds.S
> index 960c51eb4c..4103763f63 100644
> --- a/xen/arch/x86/xen.lds.S
> +++ b/xen/arch/x86/xen.lds.S
> @@ -87,9 +87,12 @@ SECTIONS
> *(.text.cold)
> *(.text.unlikely .text.*_unlikely .text.unlikely.*)
>
> + *(.text.page_aligned)
> *(.text)
> +#ifdef CONFIG_CC_SPLIT_SECTIONS
> + *(.text.*)
> +#endif
> *(.text.__x86_indirect_thunk_*)
> - *(.text.page_aligned)
>
> *(.fixup)
> *(.gnu.warning)
> @@ -292,9 +295,7 @@ SECTIONS
>
> DECL_SECTION(.data) {
> *(.data.page_aligned)
> - *(.data)
> - *(.data.rel)
> - *(.data.rel.*)
> + *(.data .data.*)
> } PHDR(text)
>
> DECL_SECTION(.bss) {
> @@ -309,7 +310,7 @@ SECTIONS
> *(.bss.percpu.read_mostly)
> . = ALIGN(SMP_CACHE_BYTES);
> __per_cpu_data_end = .;
> - *(.bss)
> + *(.bss .bss.*)
Sorry if I've missed it elsewhere, but why are .data.* and .bss.*
unguarded, but .text.* under ifdef ?
Surely they should have the same disposition?
~Andrew
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