From: Borislav Petkov <bp@alien8.de>
To: Jiri Slaby <jslaby@suse.cz>
Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
x86@kernel.org, linux-arch@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v8 07/28] x86/boot/compressed: annotate local functions
Date: Mon, 19 Aug 2019 16:44:01 +0200 [thread overview]
Message-ID: <20190819144401.GA4522@zn.tnic> (raw)
In-Reply-To: <20190808103854.6192-8-jslaby@suse.cz>
On Thu, Aug 08, 2019 at 12:38:33PM +0200, Jiri Slaby wrote:
> relocated, paging_enabled, and no_longmode are self-standing local
> functions, annotate them as such. paging_enabled is annotated as
> NOALIGN, since the trampoline code has to be compact.
>
> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: x86@kernel.org
> ---
> arch/x86/boot/compressed/head_32.S | 3 ++-
> arch/x86/boot/compressed/head_64.S | 9 ++++++---
> 2 files changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
> index 37380c0d5999..7e8ab0bb6968 100644
> --- a/arch/x86/boot/compressed/head_32.S
> +++ b/arch/x86/boot/compressed/head_32.S
> @@ -209,7 +209,7 @@ ENDPROC(efi32_stub_entry)
> #endif
>
> .text
> -relocated:
> +SYM_FUNC_START_LOCAL(relocated)
>
> /*
> * Clear BSS (stack is currently empty)
> @@ -260,6 +260,7 @@ relocated:
> */
> xorl %ebx, %ebx
> jmp *%eax
> +SYM_FUNC_END(relocated)
>
> #ifdef CONFIG_EFI_STUB
> .data
> diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
> index 6233ae35d0d9..c8ce6ffc9fe5 100644
> --- a/arch/x86/boot/compressed/head_64.S
> +++ b/arch/x86/boot/compressed/head_64.S
> @@ -511,7 +511,7 @@ ENDPROC(efi64_stub_entry)
> #endif
>
> .text
> -relocated:
> +SYM_FUNC_START_LOCAL(relocated)
>
> /*
> * Clear BSS (stack is currently empty)
> @@ -540,6 +540,7 @@ relocated:
> * Jump to the decompressed kernel.
> */
> jmp *%rax
> +SYM_FUNC_END(relocated)
>
> /*
> * Adjust the global offset table
> @@ -635,9 +636,10 @@ ENTRY(trampoline_32bit_src)
> lret
>
> .code64
> -paging_enabled:
> +SYM_FUNC_START_LOCAL_NOALIGN(paging_enabled)
> /* Return from the trampoline */
> jmp *%rdi
> +SYM_FUNC_END(paging_enabled)
>
> /*
> * The trampoline code has a size limit.
> @@ -647,11 +649,12 @@ paging_enabled:
> .org trampoline_32bit_src + TRAMPOLINE_32BIT_CODE_SIZE
>
> .code32
> -no_longmode:
> +SYM_FUNC_START_LOCAL(no_longmode)
> /* This isn't an x86-64 CPU, so hang intentionally, we cannot continue */
> 1:
> hlt
> jmp 1b
> +SYM_FUNC_END(no_longmode)
>
> #include "../../kernel/verify_cpu.S"
>
> --
All can be local labels prepended with .L
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
next prev parent reply other threads:[~2019-08-19 14:44 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-08 10:38 [PATCH v8 00/28] New macros for assembler symbols Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 01/28] linkage: new " Jiri Slaby
2019-08-12 17:06 ` Borislav Petkov
2019-08-29 10:48 ` Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 02/28] x86/asm/suspend: use SYM_DATA for data Jiri Slaby
2019-08-13 16:40 ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 03/28] x86/asm: annotate relocate_kernel Jiri Slaby
2019-08-15 8:37 ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 04/28] x86/asm/entry: annotate THUNKs Jiri Slaby
2019-08-15 12:43 ` Borislav Petkov
2019-09-06 7:43 ` Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 05/28] x86/asm: annotate local pseudo-functions Jiri Slaby
2019-08-15 16:07 ` Borislav Petkov
2019-08-28 11:47 ` Asm & local labels for functions [was: [PATCH v8 05/28] x86/asm: annotate local pseudo-functions] Jiri Slaby
2019-08-28 12:24 ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 06/28] x86/asm/crypto: annotate local functions Jiri Slaby
2019-08-17 9:17 ` Borislav Petkov
2019-09-05 10:59 ` Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 07/28] x86/boot/compressed: " Jiri Slaby
2019-08-19 14:44 ` Borislav Petkov [this message]
2019-08-08 10:38 ` [PATCH v8 08/28] x86/uaccess: annotate local function Jiri Slaby
2019-08-19 14:47 ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 09/28] x86/asm: annotate aliases Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 10/28] x86/asm/entry: annotate interrupt symbols properly Jiri Slaby
2019-08-19 14:56 ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 11/28] x86/asm/head: annotate data appropriatelly Jiri Slaby
2019-08-20 16:24 ` Borislav Petkov
2019-08-08 10:38 ` [PATCH v8 12/28] x86/boot/compressed: " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 13/28] um: " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 14/28] xen/pvh: " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 15/28] x86/asm/purgatory: start using annotations Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 16/28] x86/asm: do not annotate functions by GLOBAL Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 17/28] x86/asm: use SYM_INNER_LABEL instead of GLOBAL Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 18/28] x86/asm/realmode: use SYM_DATA_* " Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 19/28] x86/asm: kill the last GLOBAL user and remove the macro Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 20/28] x86/asm: make some functions local Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 21/28] x86/asm/ftrace: mark function_hook as function Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 22/28] x86_64/asm: add ENDs to some functions and relabel with SYM_CODE_* Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 23/28] x86_64/asm: change all ENTRY+END to SYM_CODE_* Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 24/28] x86_64/asm: change all ENTRY+ENDPROC to SYM_FUNC_* Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 25/28] x86_32/asm: add ENDs to some functions and relabel with SYM_CODE_* Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 26/28] x86_32/asm: change all ENTRY+END to SYM_CODE_* Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 27/28] x86_32/asm: change all ENTRY+ENDPROC to SYM_FUNC_* Jiri Slaby
2019-08-08 10:38 ` [PATCH v8 28/28] x86/asm: replace WEAK uses by SYM_INNER_LABEL_ALIGN Jiri Slaby
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