x86-32: use specific __vmalloc_start_set flag in __virt_addr_valid

Rather than relying on the ever-unreliable system_state,
add a specific __vmalloc_start_set flag to indicate whether
the vmalloc area has meaningful boundaries yet, and use that
in x86-32's __phys_addr and __virt_addr_valid.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 4 deletions

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 433f7bd4648a..a23ca5b5bf24 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -76,10 +76,9 @@ 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 +88,7 @@ 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;
         return pfn_valid((x - PAGE_OFFSET) >> PAGE_SHIFT);
 }