[patch v11 02/23] ACPI: add arm64 to the platforms that use ioremap

Hanjun Guo hanjun.guo at linaro.org
Tue Mar 24 07:02:35 PDT 2015

From: Graeme Gregory <graeme.gregory at linaro.org>

Now with the base changes to the arm memory mapping it is safe
to convert to using ioremap to map in the tables after
acpi_gbl_permanent_mmap is set.

CC: Rafael J Wysocki <rjw at rjwysocki.net>
Tested-by: Robert Richter <rrichter at cavium.com>
Tested-by: Timur Tabi <timur at codeaurora.org>
Acked-by: Robert Richter <rrichter at cavium.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
Reviewed-by: Grant Likely <grant.likely at linaro.org>
Signed-off-by: Al Stone <al.stone at linaro.org>
Signed-off-by: Graeme Gregory <graeme.gregory at linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo at linaro.org>
 drivers/acpi/osl.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index f9eeae8..39748bb 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -336,11 +336,11 @@ acpi_map_lookup_virt(void __iomem *virt, acpi_size size)
 	return NULL;
-#ifndef CONFIG_IA64
-#define should_use_kmap(pfn)   page_is_ram(pfn)
+#if defined(CONFIG_IA64) || defined(CONFIG_ARM64)
 /* ioremap will take care of cache attributes */
 #define should_use_kmap(pfn)   0
+#define should_use_kmap(pfn)   page_is_ram(pfn)
 static void __iomem *acpi_map(acpi_physical_address pg_off, unsigned long pg_sz)

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