[PATCH] ARM: xip: Fix module loading
From: chris.brandt@renesas.com (Chris Brandt)
Date: 2015-11-11 14:31:09
Also in:
linux-sh
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
For an XIP kernel, RAM start at _sdata instead of _stext. This fixes an issue where when you load a module, vmalloc would return virtual memory that the MMU has incorrectly mapped to non-RAM physical addresses. This fix is similar to what is already done in arm_memblock_init(). Signed-off-by: Chris Brandt <chris.brandt@renesas.com> --- arch/arm/mm/mmu.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index dd5a56b..d60cb8c 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c@@ -1383,7 +1383,11 @@ static void __init kmap_init(void) static void __init map_lowmem(void) { struct memblock_region *reg; +#ifdef CONFIG_XIP_KERNEL + phys_addr_t kernel_x_start = round_down(__pa(_sdata), SECTION_SIZE); +#else phys_addr_t kernel_x_start = round_down(__pa(_stext), SECTION_SIZE); +#endif phys_addr_t kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE); /* Map all the lowmem memory banks. */
--
1.7.9.5