Merge branches 'x86/apic', 'x86/asm', 'x86/fixmap', 'x86/memtest', 'x86/mm', 'x86...

[firefly-linux-kernel-4.4.55.git] / arch / x86 / mm / ioremap.c

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index af750ab973b6943840e9de53e4716819da06c4a2..aca924a30ee6da36146acf1d86da367df04e7cc1 100644 (file)
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -38,8 +38,7 @@ unsigned long __phys_addr(unsigned long x)
        } else {
                VIRTUAL_BUG_ON(x < PAGE_OFFSET);
                x -= PAGE_OFFSET;
-               VIRTUAL_BUG_ON(system_state == SYSTEM_BOOTING ? x > MAXMEM :
-                                       !phys_addr_valid(x));
+               VIRTUAL_BUG_ON(!phys_addr_valid(x));
        }
        return x;
 }
@@ -56,10 +55,8 @@ bool __virt_addr_valid(unsigned long x)
                if (x < PAGE_OFFSET)
                        return false;
                x -= PAGE_OFFSET;
-               if (system_state == SYSTEM_BOOTING ?
-                               x > MAXMEM : !phys_addr_valid(x)) {
+               if (!phys_addr_valid(x))
                        return false;
-               }
        }
 
        return pfn_valid(x >> PAGE_SHIFT);
@@ -76,10 +73,9 @@ static inline int phys_addr_valid(unsigned long addr)
 #ifdef CONFIG_DEBUG_VIRTUAL
 unsigned long __phys_addr(unsigned long x)
 {
-       /* VMALLOC_* aren't constants; not available at the boot time */
+       /* VMALLOC_* aren't constants  */
        VIRTUAL_BUG_ON(x < PAGE_OFFSET);
-       VIRTUAL_BUG_ON(system_state != SYSTEM_BOOTING &&
-               is_vmalloc_addr((void *) x));
+       VIRTUAL_BUG_ON(__vmalloc_start_set && is_vmalloc_addr((void *) x));
        return x - PAGE_OFFSET;
 }
 EXPORT_SYMBOL(__phys_addr);
@@ -89,7 +85,9 @@ bool __virt_addr_valid(unsigned long x)
 {
        if (x < PAGE_OFFSET)
                return false;
-       if (system_state != SYSTEM_BOOTING && is_vmalloc_addr((void *) x))
+       if (__vmalloc_start_set && is_vmalloc_addr((void *) x))
+               return false;
+       if (x >= FIXADDR_START)
                return false;
        return pfn_valid((x - PAGE_OFFSET) >> PAGE_SHIFT);
 }
@@ -134,25 +132,6 @@ int page_is_ram(unsigned long pagenr)
        return 0;
 }
 
-int pagerange_is_ram(unsigned long start, unsigned long end)
-{
-       int ram_page = 0, not_rampage = 0;
-       unsigned long page_nr;
-
-       for (page_nr = (start >> PAGE_SHIFT); page_nr < (end >> PAGE_SHIFT);
-            ++page_nr) {
-               if (page_is_ram(page_nr))
-                       ram_page = 1;
-               else
-                       not_rampage = 1;
-
-               if (ram_page == not_rampage)
-                       return -1;
-       }
-
-       return ram_page;
-}
-
 /*
  * Fix up the linear direct mapping of the kernel to avoid cache attribute
  * conflicts.
@@ -367,7 +346,7 @@ EXPORT_SYMBOL(ioremap_nocache);
  *
  * Must be freed with iounmap.
  */
-void __iomem *ioremap_wc(unsigned long phys_addr, unsigned long size)
+void __iomem *ioremap_wc(resource_size_t phys_addr, unsigned long size)
 {
        if (pat_enabled)
                return __ioremap_caller(phys_addr, size, _PAGE_CACHE_WC,
@@ -527,13 +506,19 @@ static inline pte_t * __init early_ioremap_pte(unsigned long addr)
        return &bm_pte[pte_index(addr)];
 }
 
+static unsigned long slot_virt[FIX_BTMAPS_SLOTS] __initdata;
+
 void __init early_ioremap_init(void)
 {
        pmd_t *pmd;
+       int i;
 
        if (early_ioremap_debug)
                printk(KERN_INFO "early_ioremap_init()\n");
 
+       for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
+               slot_virt[i] = fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i);
+
        pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
        memset(bm_pte, 0, sizeof(bm_pte));
        pmd_populate_kernel(&init_mm, pmd, bm_pte);
@@ -600,6 +585,7 @@ static inline void __init early_clear_fixmap(enum fixed_addresses idx)
 
 static void __iomem *prev_map[FIX_BTMAPS_SLOTS] __initdata;
 static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initdata;
+
 static int __init check_early_ioremap_leak(void)
 {
        int count = 0;
@@ -621,7 +607,8 @@ static int __init check_early_ioremap_leak(void)
 }
 late_initcall(check_early_ioremap_leak);
 
-static void __init __iomem *__early_ioremap(unsigned long phys_addr, unsigned long size, pgprot_t prot)
+static void __init __iomem *
+__early_ioremap(unsigned long phys_addr, unsigned long size, pgprot_t prot)
 {
        unsigned long offset, last_addr;
        unsigned int nrpages;
@@ -687,9 +674,9 @@ static void __init __iomem *__early_ioremap(unsigned long phys_addr, unsigned lo
                --nrpages;
        }
        if (early_ioremap_debug)
-               printk(KERN_CONT "%08lx + %08lx\n", offset, fix_to_virt(idx0));
+               printk(KERN_CONT "%08lx + %08lx\n", offset, slot_virt[slot]);
 
-       prev_map[slot] = (void __iomem *)(offset + fix_to_virt(idx0));
+       prev_map[slot] = (void __iomem *)(offset + slot_virt[slot]);
        return prev_map[slot];
 }
 
@@ -757,8 +744,3 @@ void __init early_iounmap(void __iomem *addr, unsigned long size)
        }
        prev_map[slot] = NULL;
 }
-
-void __this_fixmap_does_not_exist(void)
-{
-       WARN_ON(1);
-}