Commit d67bbacb authored Feb 27, 2008 by Thomas Gleixner Committed by Ingo Molnar Feb 29, 2008

x86: restore vsyscall64 prochandler



a recent fix:

  commit ce28b986
  Author: Thomas Gleixner <tglx@linutronix.de>
  Date:   Wed Feb 20 23:57:30 2008 +0100

    x86: fix vsyscall wreckage

removed the broken /kernel/vsyscall64 handler completely.
This triggers the following debug check:

  sysctl table check failed: /kernel/vsyscall64  No proc_handler

Restore the sane part of the proc handler.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent cded932b

arch/x86/kernel/vsyscall_64.c

+10 −1

Original line number	Diff line number	Diff line
		@@ -222,10 +222,19 @@ long __vsyscall(3) venosys_1(void)
		}

		#ifdef CONFIG_SYSCTL

		static int
		vsyscall_sysctl_change(ctl_table ctl, int write, struct file filp,
		void __user buffer, size_t lenp, loff_t *ppos)
		{
		return proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
		}

		static ctl_table kernel_table2[] = {
		{ .procname = "vsyscall64",
		.data = &vsyscall_gtod_data.sysctl_enabled, .maxlen = sizeof(int),
		.mode = 0644 },
		.mode = 0644,
		.proc_handler = vsyscall_sysctl_change },
		{}
		};