arch: Set IORESOURCE_SYSTEM_RAM flag for System RAM

Set IORESOURCE_SYSTEM_RAM in flags of resource ranges with
"System RAM", "Kernel code", "Kernel data", and "Kernel bss".

Note that:

 - IORESOURCE_SYSRAM (i.e. modifier bit) is set in flags when
   IORESOURCE_MEM is already set. IORESOURCE_SYSTEM_RAM is defined
   as (IORESOURCE_MEM|IORESOURCE_SYSRAM).

 - Some archs do not set 'flags' for children nodes, such as
   "Kernel code".  This patch does not change 'flags' in this
   case.

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
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: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mips@linux-mips.org
Cc: linux-mm <linux-mm@kvack.org>
Cc: linux-parisc@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/1453841853-11383-7-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 8 insertions, 3 deletions

diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index bbb855de6569..a992238e9b58 100644
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -1632,14 +1632,14 @@ static struct resource data_resource = {
         .name   = "Kernel data",
         .start  = 0,
         .end    = 0,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+        .flags  = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
 };
 
 static struct resource code_resource = {
         .name   = "Kernel code",
         .start  = 0,
         .end    = 0,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+        .flags  = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
 };
 
 /*
@@ -1673,10 +1673,15 @@ insert_ram_resource(u64 start_pfn, u64 end_pfn, bool reserved)
                 kzalloc(sizeof(struct resource), GFP_ATOMIC);
         if (!res)
                 return NULL;
-        res->name = reserved ? "Reserved" : "System RAM";
         res->start = start_pfn << PAGE_SHIFT;
         res->end = (end_pfn << PAGE_SHIFT) - 1;
         res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;
+        if (reserved) {
+                res->name = "Reserved";
+        } else {
+                res->name = "System RAM";
+                res->flags |= IORESOURCE_SYSRAM;
+        }
         if (insert_resource(&iomem_resource, res)) {
                 kfree(res);
                 return NULL;