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authorAnshuman Khandual <anshuman.khandual@arm.com>2020-03-23 06:35:42 +0530
committerBorislav Petkov <bp@suse.de>2020-03-23 09:11:48 +0100
commit31a9122058bc5f042cb04bcdb8cd9e6c77fdae8d (patch)
tree2271eaed99bff5e77249f57c491cbd45780696c1 /arch/x86/include
parent4dd2a1b92b91b5f2acf853ee1dc0df135054698f (diff)
x86/mm: Drop pud_mknotpresent()
There is an inconsistency between PMD and PUD-based THP page table helpers like the following, as pud_present() does not test for _PAGE_PSE. pmd_present(pmd_mknotpresent(pmd)) : True pud_present(pud_mknotpresent(pud)) : False Drop pud_mknotpresent() as there are no current users. If/when needed back later, pud_present() will also have to be fixed to accommodate _PAGE_PSE. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Baoquan He <bhe@redhat.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Link: https://lkml.kernel.org/r/1584925542-13034-1-git-send-email-anshuman.khandual@arm.com
Diffstat (limited to 'arch/x86/include')
-rw-r--r--arch/x86/include/asm/pgtable.h6
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 7e118660bbd9..d74dc560e3ab 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -595,12 +595,6 @@ static inline pmd_t pmd_mknotpresent(pmd_t pmd)
__pgprot(pmd_flags(pmd) & ~(_PAGE_PRESENT|_PAGE_PROTNONE)));
}
-static inline pud_t pud_mknotpresent(pud_t pud)
-{
- return pfn_pud(pud_pfn(pud),
- __pgprot(pud_flags(pud) & ~(_PAGE_PRESENT|_PAGE_PROTNONE)));
-}
-
static inline u64 flip_protnone_guard(u64 oldval, u64 val, u64 mask);
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)

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