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 <y-goto@xxxxxxxxxxxxxx> --- 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 - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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