From mboxrd@z Thu Jan 1 00:00:00 1970 From: ard.biesheuvel@linaro.org (Ard Biesheuvel) Date: Thu, 16 Jun 2016 14:28:57 +0200 Subject: [PATCH 1/2] ARM: drop kernel segment resources from /proc/iomem Message-ID: <1466080138-12193-1-git-send-email-ard.biesheuvel@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- 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