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>

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 7d0cba6..139791e 100644 (file)
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -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);
 

diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 8119479..450987d 100644 (file)
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -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);
 

diff --git a/arch/avr32/kernel/setup.c b/arch/avr32/kernel/setup.c
index 209ae5a..e692889 100644 (file)
--- a/arch/avr32/kernel/setup.c
+++ b/arch/avr32/kernel/setup.c
@@ -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;
 }

diff --git a/arch/m32r/kernel/setup.c b/arch/m32r/kernel/setup.c
index a5ecef7..136c69f 100644 (file)
--- a/arch/m32r/kernel/setup.c
+++ b/arch/m32r/kernel/setup.c
@@ -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;

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 569a7d5..c745f0e 100644 (file)
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -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);
 
                /*

diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 1b366c4..3c07d6b 100644 (file)
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -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);
        }
 

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index d0f0a51..f078a1f 100644 (file)
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -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);
                }
        }

diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 9220db5..cedb019 100644 (file)
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -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;

diff --git a/arch/score/kernel/setup.c b/arch/score/kernel/setup.c
index b48459a..f3a0649 100644 (file)
--- a/arch/score/kernel/setup.c
+++ b/arch/score/kernel/setup.c
@@ -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);

diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index de19cfa..3f1c18b 100644 (file)
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -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",

diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 6f21685..1cfe6aa 100644 (file)
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -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");

diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c
index bbb855d..a992238 100644 (file)
--- a/arch/tile/kernel/setup.c
+++ b/arch/tile/kernel/setup.c
@@ -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;

diff --git a/arch/unicore32/kernel/setup.c b/arch/unicore32/kernel/setup.c
index 3fa317f..c2bffa5 100644 (file)
--- a/arch/unicore32/kernel/setup.c
+++ b/arch/unicore32/kernel/setup.c
@@ -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);