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arch: Set IORESOURCE_SYSTEM_RAM flag for System RAM 

Set IORESOURCE_SYSTEM_RAM in flags of resource ranges with
"System RAM", "Kernel code", "Kernel data", and "Kernel bss".

Note that:

 - IORESOURCE_SYSRAM (i.e. modifier bit) is set in flags when
   IORESOURCE_MEM is already set. IORESOURCE_SYSTEM_RAM is defined
   as (IORESOURCE_MEM|IORESOURCE_SYSRAM).

 - Some archs do not set 'flags' for children nodes, such as
   "Kernel code".  This patch does not change 'flags' in this
   case.

Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mips@linux-mips.org
Cc: linux-mm <linux-mm@kvack.org>
Cc: linux-parisc@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: linux-sh@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/1453841853-11383-7-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Toshi Kani 2016-01-26 21:57:22 +01:00 committed by Ingo Molnar
parent 03cb525eb2
commit 35d98e93fe
13 changed files with 45 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/kernel/setup.c
View File

@ -176,13 +176,13 @@ static struct resource mem_res[] = {
.name = "Kernel code",
.start = 0,
.end = 0,
.flags = IORESOURCE_MEM
.flags = IORESOURCE_SYSTEM_RAM
},
{
.name = "Kernel data",
.start = 0,
.end = 0,
.flags = IORESOURCE_MEM
.flags = IORESOURCE_SYSTEM_RAM
}
};
@ -851,7 +851,7 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
res->name = "System RAM";
res->start = __pfn_to_phys(memblock_region_memory_base_pfn(region));
res->end = __pfn_to_phys(memblock_region_memory_end_pfn(region)) - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
request_resource(&iomem_resource, res);

6
arch/arm64/kernel/setup.c
View File

@ -73,13 +73,13 @@ static struct resource mem_res[] = {
.name = "Kernel code",
.start = 0,
.end = 0,
.flags = IORESOURCE_MEM
.flags = IORESOURCE_SYSTEM_RAM
},
{
.name = "Kernel data",
.start = 0,
.end = 0,
.flags = IORESOURCE_MEM
.flags = IORESOURCE_SYSTEM_RAM
}
};
@ -210,7 +210,7 @@ static void __init request_standard_resources(void)
res->name = "System RAM";
res->start = __pfn_to_phys(memblock_region_memory_base_pfn(region));
res->end = __pfn_to_phys(memblock_region_memory_end_pfn(region)) - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
request_resource(&iomem_resource, res);

6
arch/avr32/kernel/setup.c
View File

@ -49,13 +49,13 @@ static struct resource __initdata kernel_data = {
.name = "Kernel data",
.start = 0,
.end = 0,
.flags = IORESOURCE_MEM,
.flags = IORESOURCE_SYSTEM_RAM,
};
static struct resource __initdata kernel_code = {
.name = "Kernel code",
.start = 0,
.end = 0,
.flags = IORESOURCE_MEM,
.flags = IORESOURCE_SYSTEM_RAM,
.sibling = &kernel_data,
};
@ -134,7 +134,7 @@ add_physical_memory(resource_size_t start, resource_size_t end)
new->start = start;
new->end = end;
new->name = "System RAM";
new->flags = IORESOURCE_MEM;
new->flags = IORESOURCE_SYSTEM_RAM;
*pprev = new;
}

4
arch/m32r/kernel/setup.c
View File

@ -70,14 +70,14 @@ static struct resource data_resource = {
.name = "Kernel data",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource code_resource = {
.name = "Kernel code",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
unsigned long memory_start;

10
arch/mips/kernel/setup.c
View File

@ -732,21 +732,23 @@ static void __init resource_init(void)
end = HIGHMEM_START - 1;
res = alloc_bootmem(sizeof(struct resource));
res->start = start;
res->end = end;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
switch (boot_mem_map.map[i].type) {
case BOOT_MEM_RAM:
case BOOT_MEM_INIT_RAM:
case BOOT_MEM_ROM_DATA:
res->name = "System RAM";
res->flags |= IORESOURCE_SYSRAM;
break;
case BOOT_MEM_RESERVED:
default:
res->name = "reserved";
}
res->start = start;
res->end = end;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
request_resource(&iomem_resource, res);
/*

6
arch/parisc/mm/init.c
View File

@ -55,12 +55,12 @@ signed char pfnnid_map[PFNNID_MAP_MAX] __read_mostly;
static struct resource data_resource = {
.name = "Kernel data",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
};
static struct resource code_resource = {
.name = "Kernel code",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
};
static struct resource pdcdata_resource = {
@ -201,7 +201,7 @@ static void __init setup_bootmem(void)
res->name = "System RAM";
res->start = pmem_ranges[i].start_pfn << PAGE_SHIFT;
res->end = res->start + (pmem_ranges[i].pages << PAGE_SHIFT)-1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
request_resource(&iomem_resource, res);
}

2
arch/powerpc/mm/mem.c
View File

@ -541,7 +541,7 @@ static int __init add_system_ram_resources(void)
res->name = "System RAM";
res->start = base;
res->end = base + size - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
WARN_ON(request_resource(&iomem_resource, res) < 0);
}
}

8
arch/s390/kernel/setup.c
View File

@ -374,17 +374,17 @@ static void __init setup_lowcore(void)
static struct resource code_resource = {
.name = "Kernel code",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
};
static struct resource data_resource = {
.name = "Kernel data",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
};
static struct resource bss_resource = {
.name = "Kernel bss",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
};
static struct resource __initdata *standard_resources[] = {
@ -408,7 +408,7 @@ static void __init setup_resources(void)
for_each_memblock(memory, reg) {
res = alloc_bootmem_low(sizeof(*res));
res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;
res->flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM;
res->name = "System RAM";
res->start = reg->base;

2
arch/score/kernel/setup.c
View File

@ -101,7 +101,7 @@ static void __init resource_init(void)
res->name = "System RAM";
res->start = MEMORY_START;
res->end = MEMORY_START + MEMORY_SIZE - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
request_resource(&iomem_resource, res);
request_resource(res, &code_resource);

8
arch/sh/kernel/setup.c
View File

@ -78,17 +78,17 @@ static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
static struct resource code_resource = {
.name = "Kernel code",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
};
static struct resource data_resource = {
.name = "Kernel data",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
};
static struct resource bss_resource = {
.name = "Kernel bss",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
};
unsigned long memory_start;
@ -202,7 +202,7 @@ void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
res->name = "System RAM";
res->start = start;
res->end = end - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
if (request_resource(&iomem_resource, res)) {
pr_err("unable to request memory_resource 0x%lx 0x%lx\n",

8
arch/sparc/mm/init_64.c
View File

@ -2863,17 +2863,17 @@ void hugetlb_setup(struct pt_regs *regs)
static struct resource code_resource = {
.name = "Kernel code",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource data_resource = {
.name = "Kernel data",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource bss_resource = {
.name = "Kernel bss",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static inline resource_size_t compute_kern_paddr(void *addr)
@ -2909,7 +2909,7 @@ static int __init report_memory(void)
res->name = "System RAM";
res->start = pavail[i].phys_addr;
res->end = pavail[i].phys_addr + pavail[i].reg_size - 1;
res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;
res->flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM;
if (insert_resource(&iomem_resource, res) < 0) {
pr_warn("Resource insertion failed.\n");

11
arch/tile/kernel/setup.c
View File

@ -1632,14 +1632,14 @@ static struct resource data_resource = {
.name = "Kernel data",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource code_resource = {
.name = "Kernel code",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
/*
@ -1673,10 +1673,15 @@ insert_ram_resource(u64 start_pfn, u64 end_pfn, bool reserved)
kzalloc(sizeof(struct resource), GFP_ATOMIC);
if (!res)
return NULL;
res->name = reserved ? "Reserved" : "System RAM";
res->start = start_pfn << PAGE_SHIFT;
res->end = (end_pfn << PAGE_SHIFT) - 1;
res->flags = IORESOURCE_BUSY | IORESOURCE_MEM;
if (reserved) {
res->name = "Reserved";
} else {
res->name = "System RAM";
res->flags |= IORESOURCE_SYSRAM;
}
if (insert_resource(&iomem_resource, res)) {
kfree(res);
return NULL;

6
arch/unicore32/kernel/setup.c
View File

@ -72,13 +72,13 @@ static struct resource mem_res[] = {
.name = "Kernel code",
.start = 0,
.end = 0,
.flags = IORESOURCE_MEM
.flags = IORESOURCE_SYSTEM_RAM
},
{
.name = "Kernel data",
.start = 0,
.end = 0,
.flags = IORESOURCE_MEM
.flags = IORESOURCE_SYSTEM_RAM
}
};
@ -211,7 +211,7 @@ request_standard_resources(struct meminfo *mi)
res->name = "System RAM";
res->start = mi->bank[i].start;
res->end = mi->bank[i].start + mi->bank[i].size - 1;
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
request_resource(&iomem_resource, res);