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powerpc/vdso: Remove __kernel_datapage_offset 

__kernel_datapage_offset is not used anymore, remove it.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/ddb5c746bec4e1a026d7c85243213a1876ef844f.1601197618.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2020-09-27 09:16:37 +00:00 committed by Michael Ellerman
parent b7fe9c15b5
commit 49bf59fd03
5 changed files with 0 additions and 55 deletions

39
arch/powerpc/kernel/vdso.c
View File

@ -491,42 +491,6 @@ static __init void vdso_setup_trampolines(struct lib32_elfinfo *v32,
vdso32_rt_sigtramp = find_function32(v32, "__kernel_sigtramp_rt32");
}
static __init int vdso_fixup_datapage(struct lib32_elfinfo *v32,
struct lib64_elfinfo *v64)
{
#ifdef CONFIG_VDSO32
Elf32_Sym *sym32;
#endif
#ifdef CONFIG_PPC64
Elf64_Sym *sym64;
sym64 = find_symbol64(v64, "__kernel_datapage_offset");
if (sym64 == NULL) {
printk(KERN_ERR "vDSO64: Can't find symbol "
"__kernel_datapage_offset !\n");
return -1;
}
*((int *)(vdso64_kbase + sym64->st_value - VDSO64_LBASE)) =
-PAGE_SIZE -
(sym64->st_value - VDSO64_LBASE);
#endif /* CONFIG_PPC64 */
#ifdef CONFIG_VDSO32
sym32 = find_symbol32(v32, "__kernel_datapage_offset");
if (sym32 == NULL) {
printk(KERN_ERR "vDSO32: Can't find symbol "
"__kernel_datapage_offset !\n");
return -1;
}
*((int *)(vdso32_kbase + (sym32->st_value - VDSO32_LBASE))) =
-PAGE_SIZE -
(sym32->st_value - VDSO32_LBASE);
#endif
return 0;
}
static __init int vdso_fixup_features(struct lib32_elfinfo *v32,
struct lib64_elfinfo *v64)
{
@ -592,9 +556,6 @@ static __init int vdso_setup(void)
if (vdso_do_find_sections(&v32, &v64))
return -1;
if (vdso_fixup_datapage(&v32, &v64))
return -1;
if (vdso_fixup_features(&v32, &v64))
return -1;

3
arch/powerpc/kernel/vdso32/datapage.S
View File

@ -13,9 +13,6 @@
#include <asm/vdso_datapage.h>
.text
.global __kernel_datapage_offset;
__kernel_datapage_offset:
.long 0
/*
* void *__kernel_get_syscall_map(unsigned int *syscall_count) ;

5
arch/powerpc/kernel/vdso32/vdso32.lds.S
View File

@ -149,11 +149,6 @@ VERSION
{
VDSO_VERSION_STRING {
global:
/*
* Has to be there for the kernel to find
*/
__kernel_datapage_offset;
__kernel_get_syscall_map;
__kernel_gettimeofday;
__kernel_clock_gettime;

3
arch/powerpc/kernel/vdso64/datapage.S
View File

@ -13,9 +13,6 @@
#include <asm/vdso_datapage.h>
.text
.global __kernel_datapage_offset;
__kernel_datapage_offset:
.long 0
/*
* void *__kernel_get_syscall_map(unsigned int *syscall_count) ;

5
arch/powerpc/kernel/vdso64/vdso64.lds.S
View File

@ -148,11 +148,6 @@ VERSION
{
VDSO_VERSION_STRING {
global:
/*
* Has to be there for the kernel to find
*/
__kernel_datapage_offset;
__kernel_get_syscall_map;
__kernel_gettimeofday;
__kernel_clock_gettime;