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
--- a/Documentation/arm64/memory.txt
+++ b/Documentation/arm64/memory.txt
@@ -27,17 +27,17 @@
-----------------------------------------------------------------------
0000000000000000 0000007fffffffff 512GB user
-ffffff8000000000 ffffffbbfffcffff ~240GB vmalloc
+ffffff8000000000 ffffffbbfffeffff ~240GB vmalloc
-ffffffbbfffd0000 ffffffbcfffdffff 64KB [guard page]
-
-ffffffbbfffe0000 ffffffbcfffeffff 64KB PCI I/O space
-
-ffffffbbffff0000 ffffffbcffffffff 64KB [guard page]
+ffffffbbffff0000 ffffffbbffffffff 64KB [guard page]
ffffffbc00000000 ffffffbdffffffff 8GB vmemmap
-ffffffbe00000000 ffffffbffbffffff ~8GB [guard, future vmmemap]
+ffffffbe00000000 ffffffbffbbfffff ~8GB [guard, future vmmemap]
+
+ffffffbffbe00000 ffffffbffbe0ffff 64KB PCI I/O space
+
+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
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -114,7 +114,7 @@
* 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)
{