Now we have arch_pfn_mapped array, and max_low_pfn_mapped should not
be used anymore.
Only user is ACPI_OVERRIDE, and it should not use that, as later
accessing is using early_remap. Change to try to 4G below and
then 4G above.
Other user is in drm/i915, but it is commented out.
Should use arch_pfn_mapped or just 1<<(32-PAGE_SHIFT) instead.
Suggested-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
Cc: Thomas Renninger <trenn@xxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: Jacob Shin <jacob.shin@xxxxxxx>
Cc: linux-acpi@xxxxxxxxxxxxxxx
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
arch/x86/include/asm/page_types.h | 1 -
arch/x86/kernel/setup.c | 4 +---
arch/x86/mm/init.c | 4 ----
drivers/acpi/osl.c | 9 ++++++---
drivers/gpu/drm/i915/i915_gem_stolen.c | 2 +-
5 files changed, 8 insertions(+), 12 deletions(-)
diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h
index 54c9787..b012b82 100644
--- a/arch/x86/include/asm/page_types.h
+++ b/arch/x86/include/asm/page_types.h
@@ -43,7 +43,6 @@
extern int devmem_is_allowed(unsigned long pagenr);
-extern unsigned long max_low_pfn_mapped;
extern unsigned long max_pfn_mapped;
static inline phys_addr_t get_max_mapped(void)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 90d8cc9..4dcaae7 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -113,13 +113,11 @@
#include <asm/prom.h>
/*
- * max_low_pfn_mapped: highest direct mapped pfn under 4GB
- * max_pfn_mapped: highest direct mapped pfn over 4GB
+ * max_pfn_mapped: highest direct mapped pfn
*
* The direct mapping only covers E820_RAM regions, so the ranges and gaps are
* represented by pfn_mapped
*/
-unsigned long max_low_pfn_mapped;
unsigned long max_pfn_mapped;
#ifdef CONFIG_DMI
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 59b7fc4..abcc241 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -313,10 +313,6 @@ static void add_pfn_range_mapped(unsigned long start_pfn, unsigned long end_pfn)
nr_pfn_mapped = clean_sort_range(pfn_mapped, E820_X_MAX);
max_pfn_mapped = max(max_pfn_mapped, end_pfn);
-
- if (start_pfn < (1UL<<(32-PAGE_SHIFT)))
- max_low_pfn_mapped = max(max_low_pfn_mapped,
- min(end_pfn, 1UL<<(32-PAGE_SHIFT)));
}
bool pfn_range_is_mapped(unsigned long start_pfn, unsigned long end_pfn)
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 586e7e9..c9e36d7 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -624,9 +624,12 @@ void __init acpi_initrd_override(void *data, size_t size)
if (table_nr == 0)
return;
- acpi_tables_addr =
- memblock_find_in_range(0, max_low_pfn_mapped << PAGE_SHIFT,
- all_tables_size, PAGE_SIZE);
+ /* under 4G at first, then above 4G */
+ acpi_tables_addr = memblock_find_in_range(0, 1ULL<<32,
+ all_tables_size, PAGE_SIZE);
+ if (!acpi_tables_addr)
+ acpi_tables_addr = memblock_find_in_range(1ULL<<32, -1ULL,
+ all_tables_size, PAGE_SIZE);
if (!acpi_tables_addr) {
WARN_ON(1);
return;
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index 69d97cb..7f9380b 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -81,7 +81,7 @@ static unsigned long i915_stolen_to_physical(struct drm_device *dev)
base -= dev_priv->mm.gtt->stolen_size;
} else {
/* Stolen is immediately above Top of Memory */
- base = max_low_pfn_mapped << PAGE_SHIFT;
+ base = __REMOVED_CRAZY__ << PAGE_SHIFT;
#endif
}
--
1.7.10.4
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