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authorAndy Lutomirski <luto@MIT.EDU>2011-08-03 09:31:50 -0400
committerH. Peter Anvin <hpa@linux.intel.com>2011-08-04 19:13:35 -0400
commit9c40818da5b39fca236029059ab839857b1ef56c (patch)
treebfeb2ee130ff5b583aa26c541ea36f8bbad6cbf7
parent1bdfac19b3ecfca545281c15c7aea7ebc2eaef31 (diff)
x86-64: Move the "user" vsyscall segment out of the data segment.
The kernel's loader doesn't seem to care, but gold complains. Signed-off-by: Andy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/f0716870c297242a841b949953d80c0d87bf3d3f.1312378163.git.luto@mit.edu Reported-by: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
-rw-r--r--arch/x86/kernel/vmlinux.lds.S36
1 files changed, 18 insertions, 18 deletions
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 4aa9c54a9b76..e79fb3951fce 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -154,6 +154,24 @@ SECTIONS
154 154
155#ifdef CONFIG_X86_64 155#ifdef CONFIG_X86_64
156 156
157 . = ALIGN(PAGE_SIZE);
158 __vvar_page = .;
159
160 .vvar : AT(ADDR(.vvar) - LOAD_OFFSET) {
161
162 /* Place all vvars at the offsets in asm/vvar.h. */
163#define EMIT_VVAR(name, offset) \
164 . = offset; \
165 *(.vvar_ ## name)
166#define __VVAR_KERNEL_LDS
167#include <asm/vvar.h>
168#undef __VVAR_KERNEL_LDS
169#undef EMIT_VVAR
170
171 } :data
172
173 . = ALIGN(__vvar_page + PAGE_SIZE, PAGE_SIZE);
174
157#define VSYSCALL_ADDR (-10*1024*1024) 175#define VSYSCALL_ADDR (-10*1024*1024)
158 176
159#define VLOAD_OFFSET (VSYSCALL_ADDR - __vsyscall_0 + LOAD_OFFSET) 177#define VLOAD_OFFSET (VSYSCALL_ADDR - __vsyscall_0 + LOAD_OFFSET)
@@ -162,7 +180,6 @@ SECTIONS
162#define VVIRT_OFFSET (VSYSCALL_ADDR - __vsyscall_0) 180#define VVIRT_OFFSET (VSYSCALL_ADDR - __vsyscall_0)
163#define VVIRT(x) (ADDR(x) - VVIRT_OFFSET) 181#define VVIRT(x) (ADDR(x) - VVIRT_OFFSET)
164 182
165 . = ALIGN(4096);
166 __vsyscall_0 = .; 183 __vsyscall_0 = .;
167 184
168 . = VSYSCALL_ADDR; 185 . = VSYSCALL_ADDR;
@@ -185,23 +202,6 @@ SECTIONS
185#undef VVIRT_OFFSET 202#undef VVIRT_OFFSET
186#undef VVIRT 203#undef VVIRT
187 204
188 __vvar_page = .;
189
190 .vvar : AT(ADDR(.vvar) - LOAD_OFFSET) {
191
192 /* Place all vvars at the offsets in asm/vvar.h. */
193#define EMIT_VVAR(name, offset) \
194 . = offset; \
195 *(.vvar_ ## name)
196#define __VVAR_KERNEL_LDS
197#include <asm/vvar.h>
198#undef __VVAR_KERNEL_LDS
199#undef EMIT_VVAR
200
201 } :data
202
203 . = ALIGN(__vvar_page + PAGE_SIZE, PAGE_SIZE);
204
205#endif /* CONFIG_X86_64 */ 205#endif /* CONFIG_X86_64 */
206 206
207 /* Init code and data - will be freed after init */ 207 /* Init code and data - will be freed after init */