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Message-Id: <1381493941-4650-2-git-send-email-tianyu.lan@intel.com> Date: Fri, 11 Oct 2013 20:18:57 +0800 From: tianyu.lan@...el.com To: lenb@...nel.org, rjw@...k.pl, yinghai@...nel.org, bhelgaas@...gle.com Cc: Lan Tianyu <tianyu.lan@...el.com>, linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [Resend PATCH 1/5] ACPI/Resource: Add memory prefetch check support From: Lan Tianyu <tianyu.lan@...el.com> 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@...el.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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