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Subject[PATCH v5 6/9] x86-64: Remove vsyscall number 3 (venosys)
Date
It just segfaults since April 2008 (a4928cff), so I'm pretty sure
that nothing uses it. And having an empty section makes the linker
script a bit fragile.

Signed-off-by: Andy Lutomirski <luto@mit.edu>
---
arch/x86/kernel/vmlinux.lds.S | 4 ----
arch/x86/kernel/vsyscall_64.c | 3 ---
2 files changed, 0 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 98b378d..4f90082 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -182,10 +182,6 @@ SECTIONS
*(.vsyscall_2)
}

- .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) {
- *(.vsyscall_3)
- }
-
. = ALIGN(__vsyscall_0 + PAGE_SIZE, PAGE_SIZE);

#undef VSYSCALL_ADDR
diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index 9b2f3f5..c7fe325 100644
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -209,9 +209,6 @@ vgetcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache)
return 0;
}

-static long __vsyscall(3) venosys_1(void)
-{
- return -ENOSYS;
}

/* Assume __initcall executes before all user space. Hopefully kmod
--
1.7.5.2


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