lkml.org 
[lkml]   [2019]   [Aug]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v8 07/28] x86/boot/compressed: annotate local functions
Date
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"

--
2.22.0
\
 
 \ /
  Last update: 2019-08-08 12:41    [W:0.263 / U:0.028 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site