#include <linux/vmalloc.h>
#include <linux/swap.h>
#include <linux/kmsg_dump.h>
+#include <linux/syscore_ops.h>
#include <asm/page.h>
#include <asm/uaccess.h>
#include <asm/sections.h>
/* Per cpu memory for storing cpu states in case of system crash. */
-note_buf_t* crash_notes;
+note_buf_t __percpu *crash_notes;
/* vmcoreinfo stuff */
static unsigned char vmcoreinfo_data[VMCOREINFO_BYTES];
/* Initialize the list of destination pages */
INIT_LIST_HEAD(&image->dest_pages);
- /* Initialize the list of unuseable pages */
+ /* Initialize the list of unusable pages */
INIT_LIST_HEAD(&image->unuseable_pages);
/* Read in the segments */
image->nr_segments = nr_segments;
segment_bytes = nr_segments * sizeof(*segments);
result = copy_from_user(image->segment, segments, segment_bytes);
- if (result)
+ if (result) {
+ result = -EFAULT;
goto out;
+ }
/*
* Verify we have good destination addresses. The caller is
* just verifies it is an address we can use.
*
* Since the kernel does everything in page size chunks ensure
- * the destination addreses are page aligned. Too many
+ * the destination addresses are page aligned. Too many
* special cases crop of when we don't do this. The most
* insidious is getting overlapping destination addresses
* simply because addresses are changed to page size
/* Deal with the destination pages I have inadvertently allocated.
*
* Ideally I would convert multi-page allocations into single
- * page allocations, and add everyting to image->dest_pages.
+ * page allocations, and add everything to image->dest_pages.
*
* For now it is simpler to just free the pages.
*/
/* Walk through and free any extra destination pages I may have */
kimage_free_page_list(&image->dest_pages);
- /* Walk through and free any unuseable pages I have cached */
+ /* Walk through and free any unusable pages I have cached */
kimage_free_page_list(&image->unuseable_pages);
}
ptr = kmap(page);
/* Start with a clear page */
- memset(ptr, 0, PAGE_SIZE);
+ clear_page(ptr);
ptr += maddr & ~PAGE_MASK;
mchunk = PAGE_SIZE - (maddr & ~PAGE_MASK);
if (mchunk > mbytes)
result = copy_from_user(ptr, buf, uchunk);
kunmap(page);
if (result) {
- result = (result < 0) ? result : -EIO;
+ result = -EFAULT;
goto out;
}
ubytes -= uchunk;
kexec_flush_icache_page(page);
kunmap(page);
if (result) {
- result = (result < 0) ? result : -EIO;
+ result = -EFAULT;
goto out;
}
ubytes -= uchunk;
size_t crash_get_memory_size(void)
{
- size_t size;
+ size_t size = 0;
mutex_lock(&kexec_mutex);
- size = crashk_res.end - crashk_res.start + 1;
+ if (crashk_res.end != crashk_res.start)
+ size = resource_size(&crashk_res);
mutex_unlock(&kexec_mutex);
return size;
}
-static void free_reserved_phys_range(unsigned long begin, unsigned long end)
+void __weak crash_free_reserved_phys_range(unsigned long begin,
+ unsigned long end)
{
unsigned long addr;
start = roundup(start, PAGE_SIZE);
end = roundup(start + new_size, PAGE_SIZE);
- free_reserved_phys_range(end, crashk_res.end);
+ crash_free_reserved_phys_range(end, crashk_res.end);
- if (start == end) {
- crashk_res.end = end;
+ if ((start == end) && (crashk_res.parent != NULL))
release_resource(&crashk_res);
- } else
- crashk_res.end = end - 1;
+ crashk_res.end = end - 1;
unlock:
mutex_unlock(&kexec_mutex);
if (error)
goto Enable_cpus;
local_irq_disable();
- /* Suspend system devices */
- error = sysdev_suspend(PMSG_FREEZE);
+ error = syscore_suspend();
if (error)
goto Enable_irqs;
} else
#ifdef CONFIG_KEXEC_JUMP
if (kexec_image->preserve_context) {
- sysdev_resume();
+ syscore_resume();
Enable_irqs:
local_irq_enable();
Enable_cpus: