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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/arch/s390/include/asm/clp.h
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@@ -5,6 +5,9 @@
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 /* CLP common request & response block size */
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 #define CLP_BLK_SIZE			PAGE_SIZE
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+/* Call Logical Processor - Command Code */
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+#define CLP_SLPC		0x0001
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+
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 #define CLP_LPS_BASE	0
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 #define CLP_LPS_PCI	2
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