x86-64: Fill unused parts of the vsyscall page with 0xcc

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / x86 / kernel / vmlinux.lds.S

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 98b378d..8017471 100644 (file)
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -166,26 +166,20 @@ SECTIONS
        __vsyscall_0 = .;
 
        . = VSYSCALL_ADDR;
-       .vsyscall_0 : AT(VLOAD(.vsyscall_0)) {
+       .vsyscall : AT(VLOAD(.vsyscall)) {
                *(.vsyscall_0)
-       } :user
 
-       . = ALIGN(L1_CACHE_BYTES);
-       .vsyscall_fn : AT(VLOAD(.vsyscall_fn)) {
+               . = ALIGN(L1_CACHE_BYTES);
                *(.vsyscall_fn)
-       }
 
-       .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1)) {
+               . = 1024;
                *(.vsyscall_1)
-       }
-       .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2)) {
-               *(.vsyscall_2)
-       }
 
-       .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) {
-               *(.vsyscall_3)
-       }
+               . = 2048;
+               *(.vsyscall_2)
 
+               . = 4096;  /* Pad the whole page. */
+       } :user =0xcc
        . = ALIGN(__vsyscall_0 + PAGE_SIZE, PAGE_SIZE);
 
 #undef VSYSCALL_ADDR