linux-kernel - [PATCH v1 25/30] powerpc/vdso: Remove lib32_elfinfo and lib64

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Message-Id: <01ac65abf22f0428f8f764525a7d84459c54d806.1601197618.git.christophe.leroy@csgroup.eu>
Date:   Sun, 27 Sep 2020 09:16:42 +0000 (UTC)
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v1 25/30] powerpc/vdso: Remove lib32_elfinfo and lib64_elfinfo

lib32_elfinfo and lib64_elfinfo are not used anymore, remove them.

Also remove vdso32_kbase and vdso64_kbase while removing the
last use.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 arch/powerpc/kernel/vdso.c | 29 ++---------------------------
 1 file changed, 2 insertions(+), 27 deletions(-)

diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index f7b477da0b8a..0cb320b72923 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -44,11 +44,8 @@
 /* The alignment of the vDSO */
 #define VDSO_ALIGNMENT	(1 << 16)
 
-static void *vdso32_kbase;
-
 extern char vdso32_start, vdso32_end;
 extern char vdso64_start, vdso64_end;
-static void *vdso64_kbase = &vdso64_start;
 
 static int vdso_ready;
 
@@ -63,20 +60,6 @@ static union {
 } vdso_data_store __page_aligned_data;
 struct vdso_arch_data *vdso_data = &vdso_data_store.data;
 
-/*
- * Some infos carried around for each of them during parsing at
- * boot time.
- */
-struct lib32_elfinfo
-{
-	Elf32_Ehdr	*hdr;		/* ptr to ELF */
-};
-
-struct lib64_elfinfo
-{
-	Elf64_Ehdr	*hdr;
-};
-
 static int vdso_mremap(const struct vm_special_mapping *sm, struct vm_area_struct *new_vma,
 		       unsigned long text_size)
 {
@@ -209,8 +192,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 	do_##type##_fixups((value), __start, __end);					\
 } while (0)
 
-static __init int vdso_fixup_features(struct lib32_elfinfo *v32,
-				      struct lib64_elfinfo *v64)
+static int __init vdso_fixup_features(void)
 {
 #ifdef CONFIG_PPC64
 	VDSO_DO_FIXUPS(feature, cur_cpu_spec->cpu_features, 64, ftr_fixup);
@@ -233,12 +215,7 @@ static __init int vdso_fixup_features(struct lib32_elfinfo *v32,
 
 static __init int vdso_setup(void)
 {
-	struct lib32_elfinfo	v32;
-	struct lib64_elfinfo	v64;
-
-	v32.hdr = vdso32_kbase;
-	v64.hdr = vdso64_kbase;
-	if (vdso_fixup_features(&v32, &v64))
+	if (vdso_fixup_features())
 		return -1;
 
 	return 0;
@@ -334,8 +311,6 @@ static int __init vdso_init(void)
 	vdso_data->icache_log_block_size = ppc64_caches.l1i.log_block_size;
 #endif /* CONFIG_PPC64 */
 
-	vdso32_kbase = &vdso32_start;
-
 	vdso_setup_syscall_map();
 
 	/*
-- 
2.25.0