add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/s390/include/asm/ap.h
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@@ -160,8 +160,8 @@
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 	unsigned char Nd;		/* max # of Domains - 1 */
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 	unsigned char _reserved3[10];
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 	unsigned int apm[8];		/* AP ID mask */
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-	unsigned int aqm[8];		/* AP queue mask */
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-	unsigned int adm[8];		/* AP domain mask */
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+	unsigned int aqm[8];		/* AP (usage) queue mask */
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+	unsigned int adm[8];		/* AP (control) domain mask */
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 	unsigned char _reserved4[16];
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 } __aligned(8);
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@@ -360,4 +360,15 @@
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 	return reg1;
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 }
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+/*
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+ * Interface to tell the AP bus code that a configuration
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+ * change has happened. The bus code should at least do
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+ * an ap bus resource rescan.
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+ */
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+#if IS_ENABLED(CONFIG_ZCRYPT)
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+void ap_bus_cfg_chg(void);
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+#else
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+static inline void ap_bus_cfg_chg(void){};
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+#endif
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+
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 #endif /* _ASM_S390_AP_H_ */