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x86/pgtable: Move pti_set_user_pgtbl() to pgtable.h
There it is also usable from 32 bit code. Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Pavel Machek <pavel@ucw.cz> Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: linux-mm@kvack.org Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Brian Gerst <brgerst@gmail.com> Cc: David Laight <David.Laight@aculab.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Eduardo Valentin <eduval@amazon.com> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: Will Deacon <will.deacon@arm.com> Cc: aliguori@amazon.com Cc: daniel.gruss@iaik.tugraz.at Cc: hughd@google.com Cc: keescook@google.com Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Waiman Long <llong@redhat.com> Cc: "David H . Gutteridge" <dhgutteridge@sympatico.ca> Cc: joro@8bytes.org Link: https://lkml.kernel.org/r/1531906876-13451-20-git-send-email-joro@8bytes.org
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@ -640,8 +640,31 @@ static inline int is_new_memtype_allowed(u64 paddr, unsigned long size,
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pmd_t *populate_extra_pmd(unsigned long vaddr);
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pte_t *populate_extra_pte(unsigned long vaddr);
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#ifdef CONFIG_PAGE_TABLE_ISOLATION
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pgd_t __pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd);
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/*
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* Take a PGD location (pgdp) and a pgd value that needs to be set there.
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* Populates the user and returns the resulting PGD that must be set in
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* the kernel copy of the page tables.
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*/
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static inline pgd_t pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd)
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{
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if (!static_cpu_has(X86_FEATURE_PTI))
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return pgd;
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return __pti_set_user_pgtbl(pgdp, pgd);
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}
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#else /* CONFIG_PAGE_TABLE_ISOLATION */
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static inline pgd_t pti_set_user_pgtbl(pgd_t *pgdp, pgd_t pgd)
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{
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return pgd;
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}
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#endif /* CONFIG_PAGE_TABLE_ISOLATION */
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#endif /* __ASSEMBLY__ */
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#ifdef CONFIG_X86_32
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# include <asm/pgtable_32.h>
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#else
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