+ /*
+ * The CHKSTG macro jumps to the provided label in case the
+ * machine check interruption code reports one of unrecoverable
+ * storage errors:
+ * - Storage error uncorrected
+ * - Storage key error uncorrected
+ * - Storage degradation with Failing-storage-address validity
+ */
+ .macro CHKSTG errlabel
+ TSTMSK __LC_MCCK_CODE,(MCCK_CODE_STG_ERROR|MCCK_CODE_STG_KEY_ERROR)
+ jnz \errlabel
+ TSTMSK __LC_MCCK_CODE,MCCK_CODE_STG_DEGRAD
+ jz oklabel\@
+ TSTMSK __LC_MCCK_CODE,MCCK_CODE_STG_FAIL_ADDR
+ jnz \errlabel
+oklabel\@:
+ .endm
+
+#if IS_ENABLED(CONFIG_KVM)
+ /*
+ * The OUTSIDE macro jumps to the provided label in case the value
+ * in the provided register is outside of the provided range. The
+ * macro is useful for checking whether a PSW stored in a register
+ * pair points inside or outside of a block of instructions.
+ * @reg: register to check
+ * @start: start of the range
+ * @end: end of the range
+ * @outside_label: jump here if @reg is outside of [@start..@end)
+ */
+ .macro OUTSIDE reg,start,end,outside_label
+ lgr %r14,\reg
+ larl %r13,\start
+ slgr %r14,%r13
+ lghi %r13,\end - \start
+ clgr %r14,%r13
+ jhe \outside_label
+ .endm
+
+ .macro SIEEXIT
+ lg %r9,__SF_SIE_CONTROL(%r15) # get control block pointer
+ ni __SIE_PROG0C+3(%r9),0xfe # no longer in SIE
+ lctlg %c1,%c1,__LC_KERNEL_ASCE # load primary asce
+ larl %r9,sie_exit # skip forward to sie_exit
+ .endm
+#endif
+