forked from luck/tmp_suning_uos_patched
x86, CPA: Add a flag parameter to cpa set_clr()
Change change_page_attr_set_clr() array parameter to a flag. This helps following patches which adds an interface to change attr to uc/wb over a set of pages referred by struct page. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: arjan@infradead.org Cc: eric@anholt.net Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: airlied@redhat.com LKML-Reference: <20090319215358.611346000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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@ -787,7 +787,7 @@ static inline int cache_attr(pgprot_t attr)
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static int change_page_attr_set_clr(unsigned long *addr, int numpages,
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pgprot_t mask_set, pgprot_t mask_clr,
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int force_split, int array)
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int force_split, int in_flag)
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{
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struct cpa_data cpa;
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int ret, cache, checkalias;
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@ -802,7 +802,7 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
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return 0;
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/* Ensure we are PAGE_SIZE aligned */
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if (!array) {
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if (!(in_flag & CPA_ARRAY)) {
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if (*addr & ~PAGE_MASK) {
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*addr &= PAGE_MASK;
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/*
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@ -840,7 +840,7 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
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cpa.curpage = 0;
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cpa.force_split = force_split;
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if (array)
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if (in_flag & CPA_ARRAY)
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cpa.flags |= CPA_ARRAY;
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/* No alias checking for _NX bit modifications */
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@ -889,14 +889,14 @@ static inline int change_page_attr_set(unsigned long *addr, int numpages,
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pgprot_t mask, int array)
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{
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return change_page_attr_set_clr(addr, numpages, mask, __pgprot(0), 0,
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array);
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(array ? CPA_ARRAY : 0));
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}
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static inline int change_page_attr_clear(unsigned long *addr, int numpages,
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pgprot_t mask, int array)
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{
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return change_page_attr_set_clr(addr, numpages, __pgprot(0), mask, 0,
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array);
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(array ? CPA_ARRAY : 0));
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}
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int _set_memory_uc(unsigned long addr, int numpages)
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