diff options
| author |   Yasunori Goto <y-goto@jp.fujitsu.com> | 2007-11-14 16:59:20 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-11-14 18:45:39 -0800 |
| commit | 887c3cb18865a4f9e0786e5a5b3ef47ff469b956 (patch) | |
| tree | 553024b7cfb9c06e71aafefc218165ecc015bd10 /arch/ia64/kernel/efi.c | |
| parent | mm: speed up writeback ramp-up on clean systems (diff) | |
| download | linux-dev-887c3cb18865a4f9e0786e5a5b3ef47ff469b956.tar.xz linux-dev-887c3cb18865a4f9e0786e5a5b3ef47ff469b956.zip | |
Add IORESOUCE_BUSY flag for System RAM
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 difference causes a failure of memory unplug of x86-64. This patch
fixes it.
This patch adds IORESOURCE_BUSY to avoid potential overlap mapping by PCI
device.
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Luck, Tony" <tony.luck@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/ia64/kernel/efi.c')
| -rw-r--r-- | arch/ia64/kernel/efi.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c index 5181bf551f3c..8e8f8b6193ee 100644 --- a/arch/ia64/kernel/efi.c +++ b/arch/ia64/kernel/efi.c @@ -1113,7 +1113,7 @@ efi_initialize_iomem_resources(struct resource *code_resource, 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: @@ -1135,12 +1135,11 @@ efi_initialize_iomem_resources(struct resource *code_resource, 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: @@ -1149,7 +1148,6 @@ efi_initialize_iomem_resources(struct resource *code_resource, case EFI_ACPI_RECLAIM_MEMORY: default: name = "reserved"; - flags |= IORESOURCE_BUSY; break; } |