From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- arch/s390/include/uapi/asm/guarded_storage.h | 78 ++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 arch/s390/include/uapi/asm/guarded_storage.h (limited to 'arch/s390/include/uapi/asm/guarded_storage.h') diff --git a/arch/s390/include/uapi/asm/guarded_storage.h b/arch/s390/include/uapi/asm/guarded_storage.h new file mode 100644 index 0000000000..666af1c33b --- /dev/null +++ b/arch/s390/include/uapi/asm/guarded_storage.h @@ -0,0 +1,78 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _GUARDED_STORAGE_H +#define _GUARDED_STORAGE_H + +#include + +struct gs_cb { + __u64 reserved; + __u64 gsd; + __u64 gssm; + __u64 gs_epl_a; +}; + +struct gs_epl { + __u8 pad1; + union { + __u8 gs_eam; + struct { + __u8 : 6; + __u8 e : 1; + __u8 b : 1; + }; + }; + union { + __u8 gs_eci; + struct { + __u8 tx : 1; + __u8 cx : 1; + __u8 : 5; + __u8 in : 1; + }; + }; + union { + __u8 gs_eai; + struct { + __u8 : 1; + __u8 t : 1; + __u8 as : 2; + __u8 ar : 4; + }; + }; + __u32 pad2; + __u64 gs_eha; + __u64 gs_eia; + __u64 gs_eoa; + __u64 gs_eir; + __u64 gs_era; +}; + +#define GS_ENABLE 0 +#define GS_DISABLE 1 +#define GS_SET_BC_CB 2 +#define GS_CLEAR_BC_CB 3 +#define GS_BROADCAST 4 + +static inline void load_gs_cb(struct gs_cb *gs_cb) +{ + asm volatile(".insn rxy,0xe3000000004d,0,%0" : : "Q" (*gs_cb)); +} + +static inline void store_gs_cb(struct gs_cb *gs_cb) +{ + asm volatile(".insn rxy,0xe30000000049,0,%0" : : "Q" (*gs_cb)); +} + +static inline void save_gs_cb(struct gs_cb *gs_cb) +{ + if (gs_cb) + store_gs_cb(gs_cb); +} + +static inline void restore_gs_cb(struct gs_cb *gs_cb) +{ + if (gs_cb) + load_gs_cb(gs_cb); +} + +#endif /* _GUARDED_STORAGE_H */ -- cgit v1.2.3