ia64: Set System RAM type and descriptor

Change efi_initialize_iomem_resources() to set 'flags' and
'desc' for EFI memory types. IORESOURCE_SYSRAM, a modifier bit,
is set for System RAM as IORESOURCE_MEM is already set.
IORESOURCE_SYSTEM_RAM is defined as
(IORESOURCE_MEM|IORESOURCE_SYSRAM). I/O resource descriptor is
set for "ACPI Non-volatile Storage" and "Persistent Memory".

Also set IORESOURCE_SYSTEM_RAM for "Kernel code", "Kernel data",
and "Kernel bss".

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Tony Luck <tony.luck@intel.com>
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: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: linux-arch@vger.kernel.org
Cc: linux-efi <linux-efi@vger.kernel.org>
Cc: linux-ia64@vger.kernel.org
Cc: linux-mm <linux-mm@kvack.org>
Link: http://lkml.kernel.org/r/1453841853-11383-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2 files changed, 13 insertions, 6 deletions

diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index caae3f4e4341..300dac3702f1 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -1178,7 +1178,7 @@ efi_initialize_iomem_resources(struct resource *code_resource,
         efi_memory_desc_t *md;
         u64 efi_desc_size;
         char *name;
-        unsigned long flags;
+        unsigned long flags, desc;
 
         efi_map_start = __va(ia64_boot_param->efi_memmap);
         efi_map_end   = efi_map_start + ia64_boot_param->efi_memmap_size;
@@ -1193,6 +1193,8 @@ efi_initialize_iomem_resources(struct resource *code_resource,
                         continue;
 
                 flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+                desc = IORES_DESC_NONE;
+
                 switch (md->type) {
 
                         case EFI_MEMORY_MAPPED_IO:
@@ -1207,14 +1209,17 @@ efi_initialize_iomem_resources(struct resource *code_resource,
                                 if (md->attribute & EFI_MEMORY_WP) {
                                         name = "System ROM";
                                         flags |= IORESOURCE_READONLY;
-                                } else if (md->attribute == EFI_MEMORY_UC)
+                                } else if (md->attribute == EFI_MEMORY_UC) {
                                         name = "Uncached RAM";
-                                else
+                                } else {
                                         name = "System RAM";
+                                        flags |= IORESOURCE_SYSRAM;
+                                }
                                 break;
 
                         case EFI_ACPI_MEMORY_NVS:
                                 name = "ACPI Non-volatile Storage";
+                                desc = IORES_DESC_ACPI_NV_STORAGE;
                                 break;
 
                         case EFI_UNUSABLE_MEMORY:
@@ -1224,6 +1229,7 @@ efi_initialize_iomem_resources(struct resource *code_resource,
 
                         case EFI_PERSISTENT_MEMORY:
                                 name = "Persistent Memory";
+                                desc = IORES_DESC_PERSISTENT_MEMORY;
                                 break;
 
                         case EFI_RESERVED_TYPE:
@@ -1246,6 +1252,7 @@ efi_initialize_iomem_resources(struct resource *code_resource,
                 res->start = md->phys_addr;
                 res->end = md->phys_addr + efi_md_size(md) - 1;
                 res->flags = flags;
+                res->desc = desc;
 
                 if (insert_resource(&iomem_resource, res) < 0)
                         kfree(res);
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 4f118b0d3091..2029a38a72ae 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -80,17 +80,17 @@ unsigned long vga_console_membase;
 
 static struct resource data_resource = {
         .name   = "Kernel data",
-        .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+        .flags  = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
 };
 
 static struct resource code_resource = {
         .name   = "Kernel code",
-        .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+        .flags  = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
 };
 
 static struct resource bss_resource = {
         .name   = "Kernel bss",
-        .flags  = IORESOURCE_BUSY | IORESOURCE_MEM
+        .flags  = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
 };
 
 unsigned long ia64_max_cacheline_size;