Messages in this thread Patch in this message | | | From | Lan Tianyu <> | Subject | [RFC PATCH 1/4] ACPI/Resource: Add memory prefetch check support | Date | Fri, 6 Sep 2013 10:24:43 -0400 |
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This patch is to check mem address space's acpi resource caching ability and set prefetch flag of struct resource if it's prefetchable.
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> --- drivers/acpi/resource.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c index b7201fc..929f416 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -202,6 +202,9 @@ bool acpi_dev_resource_address_space(struct acpi_resource *ares, res->flags = acpi_dev_memresource_flags(len, addr.info.mem.write_protect, window); + + if (addr.info.mem.caching == ACPI_PREFETCHABLE_MEMORY) + res->flags |= IORESOURCE_PREFETCH; break; case ACPI_IO_RANGE: io_decode = addr.granularity == 0xfff ? -- 1.8.2.1
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