[PATCH 1/2] ARM: drop kernel segment resources from /proc/iomem

[Ard Biesheuvel]

By the same reasoning as commit c4004b02f8e5 ("x86: remove the kernel
code/data/bss resources from /proc/iomem"), the kernel code and kernel
data entries in /proc/iomem probably do more harm than good on ARM as
well. So remove them.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>
---
 arch/arm/kernel/setup.c | 26 --------------------------
 1 file changed, 26 deletions(-)

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 7b5350060612..839797c4b454 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -171,24 +171,10 @@ static struct resource mem_res[] = {
 		.start = 0,
 		.end = 0,
 		.flags = IORESOURCE_MEM
-	},
-	{
-		.name = "Kernel code",
-		.start = 0,
-		.end = 0,
-		.flags = IORESOURCE_SYSTEM_RAM
-	},
-	{
-		.name = "Kernel data",
-		.start = 0,
-		.end = 0,
-		.flags = IORESOURCE_SYSTEM_RAM
 	}
 };
 
 #define video_ram   mem_res[0]
-#define kernel_code mem_res[1]
-#define kernel_data mem_res[2]
 
 static struct resource io_res[] = {
 	{
@@ -843,11 +829,6 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
 	struct memblock_region *region;
 	struct resource *res;
 
-	kernel_code.start   = virt_to_phys(_text);
-	kernel_code.end     = virt_to_phys(_etext - 1);
-	kernel_data.start   = virt_to_phys(_sdata);
-	kernel_data.end     = virt_to_phys(_end - 1);
-
 	for_each_memblock(memory, region) {
 		res = memblock_virt_alloc(sizeof(*res), 0);
 		res->name  = "System RAM";
@@ -856,13 +837,6 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
 		res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
 
 		request_resource(&iomem_resource, res);
-
-		if (kernel_code.start >= res->start &&
-		    kernel_code.end <= res->end)
-			request_resource(res, &kernel_code);
-		if (kernel_data.start >= res->start &&
-		    kernel_data.end <= res->end)
-			request_resource(res, &kernel_data);
 	}
 
 	if (mdesc->video_start) {
-- 
1.9.1