[IA64] IA64 Kexec/kdump

[powerpc.git] / kernel / kexec.c

diff --git a/kernel/kexec.c b/kernel/kexec.c
index 50087ec..05aada2 100644 (file)
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -40,7 +40,7 @@ struct resource crashk_res = {
 
 int kexec_should_crash(struct task_struct *p)
 {
-       if (in_interrupt() || !p->pid || p->pid == 1 || panic_on_oops)
+       if (in_interrupt() || !p->pid || is_init(p) || panic_on_oops)
                return 1;
        return 0;
 }
@@ -851,6 +851,7 @@ static int kimage_load_crash_segment(struct kimage *image,
                        memset(ptr + uchunk, 0, mchunk - uchunk);
                }
                result = copy_from_user(ptr, buf, uchunk);
+               kexec_flush_icache_page(page);
                kunmap(page);
                if (result) {
                        result = (result < 0) ? result : -EIO;
@@ -995,7 +996,8 @@ asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
        image = xchg(dest_image, image);
 
 out:
-       xchg(&kexec_lock, 0); /* Release the mutex */
+       locked = xchg(&kexec_lock, 0); /* Release the mutex */
+       BUG_ON(!locked);
        kimage_free(image);
 
        return result;
@@ -1061,7 +1063,8 @@ void crash_kexec(struct pt_regs *regs)
                        machine_crash_shutdown(&fixed_regs);
                        machine_kexec(kexec_crash_image);
                }
-               xchg(&kexec_lock, 0);
+               locked = xchg(&kexec_lock, 0);
+               BUG_ON(!locked);
        }
 }