X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=kernel%2Fkexec.c;h=bf39d28e4c0e7b44313124d84681f012ca193713;hb=428622986858aebddc32d022af65e88b9d2ea8bb;hp=cdd4dcd8fb630be76f35246cb3196f327fef252b;hpb=2f058256cb64e346f4fb4499ff4e0f1c2791a4b4;p=powerpc.git

diff --git a/kernel/kexec.c b/kernel/kexec.c
index cdd4dcd8fb..bf39d28e4c 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -6,6 +6,7 @@
  * Version 2.  See the file COPYING for more details.
  */
 
+#include <linux/capability.h>
 #include <linux/mm.h>
 #include <linux/file.h>
 #include <linux/slab.h>
@@ -26,6 +27,9 @@
 #include <asm/system.h>
 #include <asm/semaphore.h>
 
+/* Per cpu memory for storing cpu states in case of system crash. */
+note_buf_t* crash_notes;
+
 /* Location of the reserved area for the crash kernel */
 struct resource crashk_res = {
 	.name  = "Crash kernel",
@@ -90,7 +94,7 @@ int kexec_should_crash(struct task_struct *p)
 static int kimage_is_destination_range(struct kimage *image,
 				       unsigned long start, unsigned long end);
 static struct page *kimage_alloc_page(struct kimage *image,
-				       unsigned int gfp_mask,
+				       gfp_t gfp_mask,
 				       unsigned long dest);
 
 static int do_kimage_alloc(struct kimage **rimage, unsigned long entry,
@@ -326,8 +330,7 @@ static int kimage_is_destination_range(struct kimage *image,
 	return 0;
 }
 
-static struct page *kimage_alloc_pages(unsigned int gfp_mask,
-					unsigned int order)
+static struct page *kimage_alloc_pages(gfp_t gfp_mask, unsigned int order)
 {
 	struct page *pages;
 
@@ -335,7 +338,7 @@ static struct page *kimage_alloc_pages(unsigned int gfp_mask,
 	if (pages) {
 		unsigned int count, i;
 		pages->mapping = NULL;
-		pages->private = order;
+		set_page_private(pages, order);
 		count = 1 << order;
 		for (i = 0; i < count; i++)
 			SetPageReserved(pages + i);
@@ -348,7 +351,7 @@ static void kimage_free_pages(struct page *page)
 {
 	unsigned int order, count, i;
 
-	order = page->private;
+	order = page_private(page);
 	count = 1 << order;
 	for (i = 0; i < count; i++)
 		ClearPageReserved(page + i);
@@ -654,7 +657,7 @@ static kimage_entry_t *kimage_dst_used(struct kimage *image,
 }
 
 static struct page *kimage_alloc_page(struct kimage *image,
-					unsigned int gfp_mask,
+					gfp_t gfp_mask,
 					unsigned long destination)
 {
 	/*
@@ -1055,9 +1058,24 @@ void crash_kexec(struct pt_regs *regs)
 	if (!locked) {
 		image = xchg(&kexec_crash_image, NULL);
 		if (image) {
-			machine_crash_shutdown(regs);
+			struct pt_regs fixed_regs;
+			crash_setup_regs(&fixed_regs, regs);
+			machine_crash_shutdown(&fixed_regs);
 			machine_kexec(image);
 		}
 		xchg(&kexec_lock, 0);
 	}
 }
+
+static int __init crash_notes_memory_init(void)
+{
+	/* Allocate memory for saving cpu registers. */
+	crash_notes = alloc_percpu(note_buf_t);
+	if (!crash_notes) {
+		printk("Kexec: Memory allocation for saving cpu register"
+		" states failed\n");
+		return -ENOMEM;
+	}
+	return 0;
+}
+module_init(crash_notes_memory_init)