kexec: Set IORESOURCE_SYSTEM_RAM for System RAM

Set proper ioresource flags and types for crash kernel
reservation areas.

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Dave Young <dyoung@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Minfei Huang <mnfhuang@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: kexec@lists.infradead.org
Cc: linux-arch@vger.kernel.org
Cc: linux-mm <linux-mm@kvack.org>
Link: http://lkml.kernel.org/r/1453841853-11383-8-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2 files changed, 6 insertions, 4 deletions

diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index 8dc659144869..8d34308ea449 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -66,13 +66,15 @@ struct resource crashk_res = {
         .name  = "Crash kernel",
         .start = 0,
         .end   = 0,
-        .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+        .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
+        .desc  = IORES_DESC_CRASH_KERNEL
 };
 struct resource crashk_low_res = {
         .name  = "Crash kernel",
         .start = 0,
         .end   = 0,
-        .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+        .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
+        .desc  = IORES_DESC_CRASH_KERNEL
 };
 
 int kexec_should_crash(struct task_struct *p)
@@ -959,7 +961,7 @@ int crash_shrink_memory(unsigned long new_size)
 
         ram_res->start = end;
         ram_res->end = crashk_res.end;
-        ram_res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;
+        ram_res->flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM;
         ram_res->name = "System RAM";
 
         crashk_res.end = end - 1;
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 007b791f676d..2bfcdc064116 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -525,7 +525,7 @@ int kexec_add_buffer(struct kimage *image, char *buffer, unsigned long bufsz,
         /* Walk the RAM ranges and allocate a suitable range for the buffer */
         if (image->type == KEXEC_TYPE_CRASH)
                 ret = walk_iomem_res("Crash kernel",
-                                     IORESOURCE_MEM | IORESOURCE_BUSY,
+                                     IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY,
                                      crashk_res.start, crashk_res.end, kbuf,
                                      locate_mem_hole_callback);
         else