xen_ptep_modify_prot_commit 1642 arch/x86/xen/enlighten.c pv_mmu_ops.ptep_modify_prot_commit = xen_ptep_modify_prot_commit; xen_ptep_modify_prot_commit 54 arch/x86/xen/mmu.h void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,