X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fbinfmt_elf.c;h=6e2f3b8dde7f2c9dd636101b86b6049580d8143d;hb=832348ff0bf1538e026ff862f91ab6db06e73499;hp=4263326ede0461a201d35ece02b28275ab3ac79a;hpb=82df39738ba9e02c057fa99b7461a56117d36119;p=linux-2.6

diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 4263326ede..6e2f3b8dde 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -150,6 +150,14 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
 	struct task_struct *tsk = current;
 	struct vm_area_struct *vma;
 
+	/*
+	 * In some cases (e.g. Hyper-Threading), we want to avoid L1
+	 * evictions by the processes running on the same package. One
+	 * thing we can do is to shuffle the initial stack for them.
+	 */
+
+	p = arch_align_stack(p);
+
 	/*
 	 * If this architecture has a platform capability string, copy it
 	 * to userspace.  In some cases (Sparc), this info is impossible
@@ -160,14 +168,6 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
 	if (k_platform) {
 		size_t len = strlen(k_platform) + 1;
 
-		/*
-		 * In some cases (e.g. Hyper-Threading), we want to avoid L1
-		 * evictions by the processes running on the same package. One
-		 * thing we can do is to shuffle the initial stack for them.
-		 */
-
-		p = arch_align_stack(p);
-
 		u_platform = (elf_addr_t __user *)STACK_ALLOC(p, len);
 		if (__copy_to_user(u_platform, k_platform, len))
 			return -EFAULT;
@@ -175,6 +175,7 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
 
 	/* Create the ELF interpreter info */
 	elf_info = (elf_addr_t *)current->mm->saved_auxv;
+	/* update AT_VECTOR_SIZE_BASE if the number of NEW_AUX_ENT() changes */
 #define NEW_AUX_ENT(id, val) \
 	do { \
 		elf_info[ei_index++] = id; \
@@ -185,6 +186,8 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
 	/* 
 	 * ARCH_DLINFO must come first so PPC can do its special alignment of
 	 * AUXV.
+	 * update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT() in
+	 * ARCH_DLINFO changes
 	 */
 	ARCH_DLINFO;
 #endif