From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Mon, 20 Oct 2008 20:27:05 +0000 (-0700)
Subject: Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git... 
X-Git-Tag: firefly_0821_release~17187
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b9d7ccf56be1ac77b71a284a1c0e6337f9a7aff0;p=firefly-linux-kernel-4.4.55.git

Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86 ACPI: fix breakage of resume on 64-bit UP systems with SMP kernel
  Introduce is_vmalloc_or_module_addr() and use with DEBUG_VIRTUAL
---

b9d7ccf56be1ac77b71a284a1c0e6337f9a7aff0
diff --cc mm/vmalloc.c
index 712ae47af0bf,f018d7e0addb..0797589d51f8
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@@ -168,15 -163,28 +168,30 @@@ static int vmap_page_range(unsigned lon
  		if (err)
  			break;
  	} while (pgd++, addr = next, addr != end);
 -	flush_cache_vmap((unsigned long) area->addr, end);
 -	return err;
 +	flush_cache_vmap(addr, end);
 +
 +	if (unlikely(err))
 +		return err;
 +	return nr;
  }
 -EXPORT_SYMBOL_GPL(map_vm_area);
  
+ static inline int is_vmalloc_or_module_addr(const void *x)
+ {
+ 	/*
+ 	 * x86-64 and sparc64 put modules in a special place,
+ 	 * and fall back on vmalloc() if that fails. Others
+ 	 * just put it in the vmalloc space.
+ 	 */
+ #if defined(CONFIG_MODULES) && defined(MODULES_VADDR)
+ 	unsigned long addr = (unsigned long)x;
+ 	if (addr >= MODULES_VADDR && addr < MODULES_END)
+ 		return 1;
+ #endif
+ 	return is_vmalloc_addr(x);
+ }
+ 
  /*
 - * Map a vmalloc()-space virtual address to the physical page.
 + * Walk a vmap address to the struct page it maps.
   */
  struct page *vmalloc_to_page(const void *vmalloc_addr)
  {
@@@ -188,16 -199,13 +203,15 @@@
  	 * XXX we might need to change this if we add VIRTUAL_BUG_ON for
  	 * architectures that do not vmalloc module space
  	 */
- 	VIRTUAL_BUG_ON(!is_vmalloc_addr(vmalloc_addr) &&
- 			!is_module_address(addr));
+ 	VIRTUAL_BUG_ON(!is_vmalloc_or_module_addr(vmalloc_addr));
  
  	if (!pgd_none(*pgd)) {
 -		pud = pud_offset(pgd, addr);
 +		pud_t *pud = pud_offset(pgd, addr);
  		if (!pud_none(*pud)) {
 -			pmd = pmd_offset(pud, addr);
 +			pmd_t *pmd = pmd_offset(pud, addr);
  			if (!pmd_none(*pmd)) {
 +				pte_t *ptep, pte;
 +
  				ptep = pte_offset_map(pmd, addr);
  				pte = *ptep;
  				if (pte_present(pte))