memtest: use phys_addr_t for physical addresses

Since memtest might be used by other architectures pass input parameters
as phys_addr_t instead of long to prevent overflow.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 6724cb020f5ece7e636e304d0506970177ef68d3..9497ec7c77ea1b45d0a48e9d390d292dd6db5153 100644 (file)
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -366,9 +366,9 @@ static inline unsigned long memblock_region_reserved_end_pfn(const struct memblo
 #endif
 
 #ifdef CONFIG_MEMTEST
-extern void early_memtest(unsigned long start, unsigned long end);
+extern void early_memtest(phys_addr_t start, phys_addr_t end);
 #else
-static inline void early_memtest(unsigned long start, unsigned long end)
+static inline void early_memtest(phys_addr_t start, phys_addr_t end)
 {
 }
 #endif

diff --git a/mm/memtest.c b/mm/memtest.c
index 1e9da795767ab95c6688b2b47fada69db0767ebd..1997d934b13b001f1b1decf9ca898847fe6fb6be 100644 (file)
--- a/mm/memtest.c
+++ b/mm/memtest.c
@@ -29,7 +29,7 @@ static u64 patterns[] __initdata = {
        0x7a6c7258554e494cULL, /* yeah ;-) */
 };
 
-static void __init reserve_bad_mem(u64 pattern, u64 start_bad, u64 end_bad)
+static void __init reserve_bad_mem(u64 pattern, phys_addr_t start_bad, phys_addr_t end_bad)
 {
        printk(KERN_INFO "  %016llx bad mem addr %010llx - %010llx reserved\n",
               (unsigned long long) pattern,
@@ -38,11 +38,11 @@ static void __init reserve_bad_mem(u64 pattern, u64 start_bad, u64 end_bad)
        memblock_reserve(start_bad, end_bad - start_bad);
 }
 
-static void __init memtest(u64 pattern, u64 start_phys, u64 size)
+static void __init memtest(u64 pattern, phys_addr_t start_phys, phys_addr_t size)
 {
        u64 *p, *start, *end;
-       u64 start_bad, last_bad;
-       u64 start_phys_aligned;
+       phys_addr_t start_bad, last_bad;
+       phys_addr_t start_phys_aligned;
        const size_t incr = sizeof(pattern);
 
        start_phys_aligned = ALIGN(start_phys, incr);
@@ -69,14 +69,14 @@ static void __init memtest(u64 pattern, u64 start_phys, u64 size)
                reserve_bad_mem(pattern, start_bad, last_bad + incr);
 }
 
-static void __init do_one_pass(u64 pattern, u64 start, u64 end)
+static void __init do_one_pass(u64 pattern, phys_addr_t start, phys_addr_t end)
 {
        u64 i;
        phys_addr_t this_start, this_end;
 
        for_each_free_mem_range(i, NUMA_NO_NODE, &this_start, &this_end, NULL) {
-               this_start = clamp_t(phys_addr_t, this_start, start, end);
-               this_end = clamp_t(phys_addr_t, this_end, start, end);
+               this_start = clamp(this_start, start, end);
+               this_end = clamp(this_end, start, end);
                if (this_start < this_end) {
                        printk(KERN_INFO "  %010llx - %010llx pattern %016llx\n",
                               (unsigned long long)this_start,
@@ -102,7 +102,7 @@ static int __init parse_memtest(char *arg)
 
 early_param("memtest", parse_memtest);
 
-void __init early_memtest(unsigned long start, unsigned long end)
+void __init early_memtest(phys_addr_t start, phys_addr_t end)
 {
        unsigned int i;
        unsigned int idx = 0;