arm64: Move PCI_IOBASE closer to MODULES_VADDR

This is to reuse the same pmd table that is sparsely populated with
the modules space.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/Documentation/arm64/memory.txt b/Documentation/arm64/memory.txt
index dbbdcbb..4110cca 100644 (file)
--- a/Documentation/arm64/memory.txt
+++ b/Documentation/arm64/memory.txt
@@ -27,17 +27,17 @@ Start                       End                     Size            Use
 -----------------------------------------------------------------------
 0000000000000000       0000007fffffffff         512GB          user
 
-ffffff8000000000       ffffffbbfffcffff        ~240GB          vmalloc
+ffffff8000000000       ffffffbbfffeffff        ~240GB          vmalloc
 
-ffffffbbfffd0000       ffffffbcfffdffff          64KB          [guard page]
+ffffffbbffff0000       ffffffbbffffffff          64KB          [guard page]
 
-ffffffbbfffe0000       ffffffbcfffeffff          64KB          PCI I/O space
+ffffffbc00000000       ffffffbdffffffff           8GB          vmemmap
 
-ffffffbbffff0000       ffffffbcffffffff          64KB          [guard page]
+ffffffbe00000000       ffffffbffbbfffff          ~8GB          [guard, future vmmemap]
 
-ffffffbc00000000       ffffffbdffffffff           8GB          vmemmap
+ffffffbffbe00000       ffffffbffbe0ffff          64KB          PCI I/O space
 
-ffffffbe00000000       ffffffbffbffffff          ~8GB          [guard, future vmmemap]
+ffffffbbffff0000       ffffffbcffffffff          ~2MB          [guard]
 
 ffffffbffc000000       ffffffbfffffffff          64MB          modules
 

diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index d10778f..54f6116 100644 (file)
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -114,7 +114,7 @@ static inline u64 __raw_readq(const volatile void __iomem *addr)
  *  I/O port access primitives.
  */
 #define IO_SPACE_LIMIT         0xffff
-#define PCI_IOBASE             ((void __iomem *)0xffffffbbfffe0000UL)
+#define PCI_IOBASE             ((void __iomem *)(MODULES_VADDR - SZ_2M))
 
 static inline u8 inb(unsigned long addr)
 {