From 2d42f9477320befd33846c4083cab898998cdee5 Mon Sep 17 00:00:00 2001 From: Claudio Imbrenda Date: Thu, 20 Apr 2017 10:03:45 +0200 Subject: 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 Reviewed-by: Janosch Frank Reviewed-by: Christian Borntraeger Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/page-states.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 arch/s390/include/asm/page-states.h (limited to 'arch/s390/include/asm/page-states.h') 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 + */ + +#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 -- cgit v1.2.3