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authorClaudio Imbrenda <imbrenda@linux.vnet.ibm.com>2017-04-20 11:03:45 +0300
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2017-04-20 14:33:08 +0300
commit2d42f9477320befd33846c4083cab898998cdee5 (patch)
tree71045127b1000beafd1760b509e6ba9e66e1d3c6 /arch/s390/include/asm/page-states.h
parentb13de4b7adeb7a5e37a5aa78d5a4926c3cd4e131 (diff)
downloadlinux-2d42f9477320befd33846c4083cab898998cdee5.tar.xz
s390/kvm: Add PGSTE manipulation functions
Add PGSTE manipulation functions: * set_pgste_bits sets specific bits in a PGSTE * get_pgste returns the whole PGSTE * pgste_perform_essa manipulates a PGSTE to set specific storage states * ESSA_[SG]ET_* macros used to indicate the action for manipulate_pgste Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Reviewed-by: Janosch Frank <frankja@de.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/page-states.h')
-rw-r--r--arch/s390/include/asm/page-states.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/s390/include/asm/page-states.h b/arch/s390/include/asm/page-states.h
new file mode 100644
index 000000000000..42267a2fe29e
--- /dev/null
+++ b/arch/s390/include/asm/page-states.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright IBM Corp. 2017
+ * Author(s): Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
+ */
+
+#ifndef PAGE_STATES_H
+#define PAGE_STATES_H
+
+#define ESSA_GET_STATE 0
+#define ESSA_SET_STABLE 1
+#define ESSA_SET_UNUSED 2
+#define ESSA_SET_VOLATILE 3
+#define ESSA_SET_POT_VOLATILE 4
+#define ESSA_SET_STABLE_RESIDENT 5
+#define ESSA_SET_STABLE_IF_RESIDENT 6
+
+#define ESSA_MAX ESSA_SET_STABLE_IF_RESIDENT
+
+#endif