@@ -16,6 +16,7 @@
#include <linux/syscalls.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
+#include <linux/pkram.h>
#include "kexec_internal.h"
@@ -153,6 +154,14 @@ static int do_kexec_load(unsigned long entry, unsigned long nr_segments,
if (ret)
goto out;
+ for (i = 0; i < nr_segments; i++) {
+ unsigned long mem = image->segment[i].mem;
+ size_t memsz = image->segment[i].memsz;
+
+ if (memsz)
+ pkram_ban_region(PFN_DOWN(mem), PFN_UP(mem + memsz) - 1);
+ }
+
/* Install the new kernel and uninstall the old */
image = xchg(dest_image, image);
@@ -27,6 +27,8 @@
#include <linux/kernel_read_file.h>
#include <linux/syscalls.h>
#include <linux/vmalloc.h>
+#include <linux/pkram.h>
+
#include "kexec_internal.h"
#ifdef CONFIG_KEXEC_SIG
@@ -403,6 +405,14 @@ static int kexec_image_verify_sig(struct kimage *image, void *buf,
if (ret)
goto out;
+ for (i = 0; i < image->nr_segments; i++) {
+ unsigned long mem = image->segment[i].mem;
+ size_t memsz = image->segment[i].memsz;
+
+ if (memsz)
+ pkram_ban_region(PFN_DOWN(mem), PFN_UP(mem + memsz) - 1);
+ }
+
/*
* Free up any temporary buffers allocated which are not needed
* after image has been loaded
When loading a kernel for kexec, dynamically update the list of physical ranges that are not to be used for storing preserved pages with the ranges where kexec segments will be copied to on reboot. This ensures no pages preserved after the new kernel has been loaded will reside in these ranges on reboot. Not yet handled is the case where pages have been preserved before a kexec kernel is loaded. This will be covered by a later patch. Signed-off-by: Anthony Yznaga <anthony.yznaga@oracle.com> --- kernel/kexec.c | 9 +++++++++ kernel/kexec_file.c | 10 ++++++++++ 2 files changed, 19 insertions(+)