release_p4d 359 arch/x86/include/asm/paravirt.h PVOP_VCALL1(mmu.release_p4d, pfn); release_p4d 245 arch/x86/include/asm/paravirt_types.h void (*release_p4d)(unsigned long pfn); release_p4d 384 arch/x86/kernel/paravirt.c .mmu.release_p4d = paravirt_nop,