From cacf890694a36124ceddce44ff4c7b02d372ce7c Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Thu, 21 Aug 2008 13:46:33 +0200
Subject: [PATCH] Revert "introduce two APIs for page attribute"

This reverts commit 1ac2f7d55b7ee1613c90631e87fea22ec06781e5.
---
 arch/x86/mm/pageattr.c       | 58 +++++-------------------------------
 include/asm-x86/cacheflush.h |  3 --
 2 files changed, 8 insertions(+), 53 deletions(-)

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 4adb33628dec..5c06469a0653 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -752,12 +752,12 @@ static inline int cache_attr(pgprot_t attr)
 		(_PAGE_PAT | _PAGE_PAT_LARGE | _PAGE_PWT | _PAGE_PCD);
 }
 
-static int do_change_page_attr_set_clr(unsigned long addr, int numpages,
+static int change_page_attr_set_clr(unsigned long addr, int numpages,
 				    pgprot_t mask_set, pgprot_t mask_clr,
-				    int force_split, int *tlb_flush)
+				    int force_split)
 {
 	struct cpa_data cpa;
-	int ret, checkalias;
+	int ret, cache, checkalias;
 
 	/*
 	 * Check, if we are requested to change a not supported
@@ -795,22 +795,9 @@ static int do_change_page_attr_set_clr(unsigned long addr, int numpages,
 	/*
 	 * Check whether we really changed something:
 	 */
-	*tlb_flush = cpa.flushtlb;
-	cpa_fill_pool(NULL);
-
-	return ret;
-}
-
-static int change_page_attr_set_clr(unsigned long addr, int numpages,
-				    pgprot_t mask_set, pgprot_t mask_clr,
-				    int force_split)
-{
-	int cache, flush_cache = 0, ret;
-
-	ret = do_change_page_attr_set_clr(addr, numpages, mask_set, mask_clr,
-		force_split, &flush_cache);
-	if (!flush_cache)
+	if (!cpa.flushtlb)
 		goto out;
+
 	/*
 	 * No need to flush, when we did not set any of the caching
 	 * attributes:
@@ -827,7 +814,10 @@ static int change_page_attr_set_clr(unsigned long addr, int numpages,
 		cpa_flush_range(addr, numpages, cache);
 	else
 		cpa_flush_all(cache);
+
 out:
+	cpa_fill_pool(NULL);
+
 	return ret;
 }
 
@@ -865,30 +855,6 @@ int set_memory_uc(unsigned long addr, int numpages)
 }
 EXPORT_SYMBOL(set_memory_uc);
 
-int set_memory_uc_noflush(unsigned long addr, int numpages)
-{
-	int flush;
-	/*
-	 * for now UC MINUS. see comments in ioremap_nocache()
-	 */
-	if (reserve_memtype(addr, addr + numpages * PAGE_SIZE,
-			    _PAGE_CACHE_UC_MINUS, NULL))
-		return -EINVAL;
-	/*
-	 * for now UC MINUS. see comments in ioremap_nocache()
-	 */
-	return do_change_page_attr_set_clr(addr, numpages,
-				    __pgprot(_PAGE_CACHE_UC_MINUS),
-					__pgprot(0), 0, &flush);
-}
-EXPORT_SYMBOL(set_memory_uc_noflush);
-
-void set_memory_flush_all(void)
-{
-	cpa_flush_all(1);
-}
-EXPORT_SYMBOL(set_memory_flush_all);
-
 int _set_memory_wc(unsigned long addr, int numpages)
 {
 	return change_page_attr_set(addr, numpages,
@@ -963,14 +929,6 @@ int set_pages_uc(struct page *page, int numpages)
 }
 EXPORT_SYMBOL(set_pages_uc);
 
-int set_pages_uc_noflush(struct page *page, int numpages)
-{
-	unsigned long addr = (unsigned long)page_address(page);
-
-	return set_memory_uc_noflush(addr, numpages);
-}
-EXPORT_SYMBOL(set_pages_uc_noflush);
-
 int set_pages_wb(struct page *page, int numpages)
 {
 	unsigned long addr = (unsigned long)page_address(page);
diff --git a/include/asm-x86/cacheflush.h b/include/asm-x86/cacheflush.h
index 57bac7b68c46..f4c0ab50d2c2 100644
--- a/include/asm-x86/cacheflush.h
+++ b/include/asm-x86/cacheflush.h
@@ -57,8 +57,6 @@ int _set_memory_uc(unsigned long addr, int numpages);
 int _set_memory_wc(unsigned long addr, int numpages);
 int _set_memory_wb(unsigned long addr, int numpages);
 int set_memory_uc(unsigned long addr, int numpages);
-int set_memory_uc_noflush(unsigned long addr, int numpages);
-void set_memory_flush_all(void);
 int set_memory_wc(unsigned long addr, int numpages);
 int set_memory_wb(unsigned long addr, int numpages);
 int set_memory_x(unsigned long addr, int numpages);
@@ -89,7 +87,6 @@ int set_memory_4k(unsigned long addr, int numpages);
  */
 
 int set_pages_uc(struct page *page, int numpages);
-int set_pages_uc_noflush(struct page *page, int numpages);
 int set_pages_wb(struct page *page, int numpages);
 int set_pages_x(struct page *page, int numpages);
 int set_pages_nx(struct page *page, int numpages);
-- 
2.30.2