2849914393
Non-PAE operation has been deprecated in Xen for a while, and is rarely tested or used. xen-unstable has now officially dropped non-PAE support. Since Xen/pvops' non-PAE support has also been broken for a while, we may as well completely drop it altogether. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
#ifndef _XEN_MMU_H
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#include <linux/linkage.h>
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#include <asm/page.h>
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enum pt_level {
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PT_PGD,
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PT_PUD,
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PT_PMD,
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PT_PTE
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};
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/*
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* Page-directory addresses above 4GB do not fit into architectural %cr3.
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* When accessing %cr3, or equivalent field in vcpu_guest_context, guests
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* must use the following accessor macros to pack/unpack valid MFNs.
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*
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* Note that Xen is using the fact that the pagetable base is always
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* page-aligned, and putting the 12 MSB of the address into the 12 LSB
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* of cr3.
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*/
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#define xen_pfn_to_cr3(pfn) (((unsigned)(pfn) << 12) | ((unsigned)(pfn) >> 20))
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#define xen_cr3_to_pfn(cr3) (((unsigned)(cr3) >> 12) | ((unsigned)(cr3) << 20))
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void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
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void xen_set_pte(pte_t *ptep, pte_t pteval);
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void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
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pte_t *ptep, pte_t pteval);
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void xen_set_pmd(pmd_t *pmdp, pmd_t pmdval);
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void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next);
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void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
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void xen_exit_mmap(struct mm_struct *mm);
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void xen_pgd_pin(pgd_t *pgd);
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//void xen_pgd_unpin(pgd_t *pgd);
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pteval_t xen_pte_val(pte_t);
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pmdval_t xen_pmd_val(pmd_t);
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pgdval_t xen_pgd_val(pgd_t);
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pte_t xen_make_pte(pteval_t);
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pmd_t xen_make_pmd(pmdval_t);
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pgd_t xen_make_pgd(pgdval_t);
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void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
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pte_t *ptep, pte_t pteval);
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void xen_set_pte_atomic(pte_t *ptep, pte_t pte);
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void xen_set_pud(pud_t *ptr, pud_t val);
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void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
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void xen_pmd_clear(pmd_t *pmdp);
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#endif /* _XEN_MMU_H */
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