mm, x86: fix HIGHMEM64 && PARAVIRT build config for native_pud_clear()

Looks like I also missed the build config that includes CONFIG_HIGHMEM64G && CONFIG_PARAVIRT to export the native_pud_clear() dummy function. Fixes: a00cc7d ("mm, x86: add support for PUD-sized transparent hugepages") Link: http://lkml.kernel.org/r/148823188084.56076.17451228917824355200.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Dave Jiang <[email protected]> Reported-by: Laura Abbott <[email protected]> Reported-by: Boris Ostrovsky <[email protected]> Cc: Matthew Wilcox <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
akeromi · Feb 28, 2017 · 3e761a4 · 3e761a4
1 parent 2959a5f
commit 3e761a4
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/arch/x86/include/asm/pgtable-3level.h b/arch/x86/include/asm/pgtable-3level.h
@@ -121,7 +121,8 @@ static inline void native_pmd_clear(pmd_t *pmd)
 	*(tmp + 1) = 0;
 }
 
-#ifndef CONFIG_SMP
+#if !defined(CONFIG_SMP) || (defined(CONFIG_HIGHMEM64G) && \
+		defined(CONFIG_PARAVIRT))
 static inline void native_pud_clear(pud_t *pudp)
 {
 }