Hello.
I was asked from Kame-san to write this patch.
Please apply.
---------
i386 and x86-64 registers System RAM as IORESOURCE_MEM | IORESOURCE_BUSY.
But ia64 registers it as IORESOURCE_MEM only.
In addition, memory hotplug code registers new memory as IORESOURCE_MEM too.
This patch adds IORESOURCE_BUSY for them to avoid potential overlap mapping
by PCI device.
Signed-off-by: Yasunori Goto <[email protected]>
---
arch/ia64/kernel/efi.c | 6 ++----
mm/memory_hotplug.c | 2 +-
2 files changed, 3 insertions(+), 5 deletions(-)
Index: current/arch/ia64/kernel/efi.c
===================================================================
--- current.orig/arch/ia64/kernel/efi.c 2007-11-01 15:24:05.000000000 +0900
+++ current/arch/ia64/kernel/efi.c 2007-11-01 15:24:18.000000000 +0900
@@ -1111,7 +1111,7 @@ efi_initialize_iomem_resources(struct re
if (md->num_pages == 0) /* should not happen */
continue;
- flags = IORESOURCE_MEM;
+ flags = IORESOURCE_MEM | IORESOURCE_BUSY;
switch (md->type) {
case EFI_MEMORY_MAPPED_IO:
@@ -1133,12 +1133,11 @@ efi_initialize_iomem_resources(struct re
case EFI_ACPI_MEMORY_NVS:
name = "ACPI Non-volatile Storage";
- flags |= IORESOURCE_BUSY;
break;
case EFI_UNUSABLE_MEMORY:
name = "reserved";
- flags |= IORESOURCE_BUSY | IORESOURCE_DISABLED;
+ flags |= IORESOURCE_DISABLED;
break;
case EFI_RESERVED_TYPE:
@@ -1147,7 +1146,6 @@ efi_initialize_iomem_resources(struct re
case EFI_ACPI_RECLAIM_MEMORY:
default:
name = "reserved";
- flags |= IORESOURCE_BUSY;
break;
}
Index: current/mm/memory_hotplug.c
===================================================================
--- current.orig/mm/memory_hotplug.c 2007-11-01 15:24:16.000000000 +0900
+++ current/mm/memory_hotplug.c 2007-11-01 15:41:27.000000000 +0900
@@ -39,7 +39,7 @@ static struct resource *register_memory_
res->name = "System RAM";
res->start = start;
res->end = start + size - 1;
- res->flags = IORESOURCE_MEM;
+ res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
if (request_resource(&iomem_resource, res) < 0) {
printk("System RAM resource %llx - %llx cannot be added\n",
(unsigned long long)res->start, (unsigned long long)res->end);
--
Yasunori Goto
-
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