add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/s390/include/asm/pci_dma.h
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@@ -131,12 +131,6 @@
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 	*entry |= ZPCI_TABLE_VALID;
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 }
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-static inline void invalidate_table_entry(unsigned long *entry)
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-{
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-	*entry &= ~ZPCI_TABLE_VALID_MASK;
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-	*entry |= ZPCI_TABLE_INVALID;
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-}
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-
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 static inline void invalidate_pt_entry(unsigned long *entry)
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 {
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 	WARN_ON_ONCE((*entry & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_INVALID);
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@@ -171,11 +165,6 @@
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 static inline int pt_entry_isvalid(unsigned long entry)
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 {
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 	return (entry & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID;
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-}
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-
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-static inline int entry_isprotected(unsigned long entry)
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-{
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-	return (entry & ZPCI_TABLE_PROT_MASK) == ZPCI_TABLE_PROTECTED;
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 }
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 static inline unsigned long *get_rt_sto(unsigned long entry)