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-rw-r--r--arch/s390/include/asm/elf.h1
-rw-r--r--arch/s390/include/asm/lowcore.h10
-rw-r--r--arch/s390/include/asm/nmi.h2
-rw-r--r--arch/s390/include/asm/processor.h1
-rw-r--r--arch/s390/include/asm/setup.h3
-rw-r--r--arch/s390/include/asm/switch_to.h48
-rw-r--r--arch/s390/include/uapi/asm/sigcontext.h20
-rw-r--r--arch/s390/include/uapi/asm/types.h4
-rw-r--r--arch/s390/include/uapi/asm/ucontext.h15
9 files changed, 88 insertions, 16 deletions
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index 78f4f8711d58..27735ae06a78 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -102,6 +102,7 @@
#define HWCAP_S390_ETF3EH 256
#define HWCAP_S390_HIGH_GPRS 512
#define HWCAP_S390_TE 1024
+#define HWCAP_S390_VXRS 2048
/*
* These are used to set parameters in the core dumps.
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 4349197ab9df..d812cf1a8177 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -310,7 +310,10 @@ struct _lowcore {
/* Extended facility list */
__u64 stfle_fac_list[32]; /* 0x0f00 */
- __u8 pad_0x1000[0x11b8-0x1000]; /* 0x1000 */
+ __u8 pad_0x1000[0x11b0-0x1000]; /* 0x1000 */
+
+ /* Pointer to vector register save area */
+ __u64 vector_save_area_addr; /* 0x11b0 */
/* 64 bit extparam used for pfault/diag 250: defined by architecture */
__u64 ext_params2; /* 0x11B8 */
@@ -334,9 +337,10 @@ struct _lowcore {
/* Transaction abort diagnostic block */
__u8 pgm_tdb[256]; /* 0x1800 */
+ __u8 pad_0x1900[0x1c00-0x1900]; /* 0x1900 */
- /* align to the top of the prefix area */
- __u8 pad_0x1900[0x2000-0x1900]; /* 0x1900 */
+ /* Software defined save area for vector registers */
+ __u8 vector_save_area[1024]; /* 0x1c00 */
} __packed;
#endif /* CONFIG_32BIT */
diff --git a/arch/s390/include/asm/nmi.h b/arch/s390/include/asm/nmi.h
index 35f8ec185616..3027a5a72b74 100644
--- a/arch/s390/include/asm/nmi.h
+++ b/arch/s390/include/asm/nmi.h
@@ -38,7 +38,7 @@ struct mci {
__u32 pm : 1; /* 22 psw program mask and cc validity */
__u32 ia : 1; /* 23 psw instruction address validity */
__u32 fa : 1; /* 24 failing storage address validity */
- __u32 : 1; /* 25 */
+ __u32 vr : 1; /* 25 vector register validity */
__u32 ec : 1; /* 26 external damage code validity */
__u32 fp : 1; /* 27 floating point register validity */
__u32 gr : 1; /* 28 general register validity */
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 3d0871058306..d559bdb03d18 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -117,6 +117,7 @@ struct thread_struct {
int ri_signum;
#ifdef CONFIG_64BIT
unsigned char trap_tdb[256]; /* Transaction abort diagnose block */
+ __vector128 *vxrs; /* Vector register save area */
#endif
};
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index dbde7c236577..7736fdd72595 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -56,6 +56,7 @@ extern void detect_memory_memblock(void);
#define MACHINE_FLAG_TOPOLOGY (1UL << 14)
#define MACHINE_FLAG_TE (1UL << 15)
#define MACHINE_FLAG_TLB_LC (1UL << 17)
+#define MACHINE_FLAG_VX (1UL << 18)
#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
@@ -78,6 +79,7 @@ extern void detect_memory_memblock(void);
#define MACHINE_HAS_TOPOLOGY (0)
#define MACHINE_HAS_TE (0)
#define MACHINE_HAS_TLB_LC (0)
+#define MACHINE_HAS_VX (0)
#else /* CONFIG_64BIT */
#define MACHINE_HAS_IEEE (1)
#define MACHINE_HAS_CSP (1)
@@ -90,6 +92,7 @@ extern void detect_memory_memblock(void);
#define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
#define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
#define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
+#define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
#endif /* CONFIG_64BIT */
/*
diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h
index 18ea9e3f8142..0e0109578021 100644
--- a/arch/s390/include/asm/switch_to.h
+++ b/arch/s390/include/asm/switch_to.h
@@ -103,6 +103,48 @@ static inline void restore_fp_regs(freg_t *fprs)
asm volatile("ld 15,%0" : : "Q" (fprs[15]));
}
+static inline void save_vx_regs(__vector128 *vxrs)
+{
+ typedef struct { __vector128 _[__NUM_VXRS]; } addrtype;
+
+ asm volatile(
+ " la 1,%0\n"
+ " .word 0xe70f,0x1000,0x003e\n" /* vstm 0,15,0(1) */
+ " .word 0xe70f,0x1100,0x0c3e\n" /* vstm 16,31,256(1) */
+ : "=Q" (*(addrtype *) vxrs) : : "1");
+}
+
+static inline void restore_vx_regs(__vector128 *vxrs)
+{
+ typedef struct { __vector128 _[__NUM_VXRS]; } addrtype;
+
+ asm volatile(
+ " la 1,%0\n"
+ " .word 0xe70f,0x1000,0x0036\n" /* vlm 0,15,0(1) */
+ " .word 0xe70f,0x1100,0x0c36\n" /* vlm 16,31,256(1) */
+ : : "Q" (*(addrtype *) vxrs) : "1");
+}
+
+static inline void save_fp_vx_regs(struct task_struct *task)
+{
+#ifdef CONFIG_64BIT
+ if (task->thread.vxrs)
+ save_vx_regs(task->thread.vxrs);
+ else
+#endif
+ save_fp_regs(task->thread.fp_regs.fprs);
+}
+
+static inline void restore_fp_vx_regs(struct task_struct *task)
+{
+#ifdef CONFIG_64BIT
+ if (task->thread.vxrs)
+ restore_vx_regs(task->thread.vxrs);
+ else
+#endif
+ restore_fp_regs(task->thread.fp_regs.fprs);
+}
+
static inline void save_access_regs(unsigned int *acrs)
{
typedef struct { int _[NUM_ACRS]; } acrstype;
@@ -120,16 +162,16 @@ static inline void restore_access_regs(unsigned int *acrs)
#define switch_to(prev,next,last) do { \
if (prev->mm) { \
save_fp_ctl(&prev->thread.fp_regs.fpc); \
- save_fp_regs(prev->thread.fp_regs.fprs); \
+ save_fp_vx_regs(prev); \
save_access_regs(&prev->thread.acrs[0]); \
save_ri_cb(prev->thread.ri_cb); \
} \
if (next->mm) { \
+ update_cr_regs(next); \
restore_fp_ctl(&next->thread.fp_regs.fpc); \
- restore_fp_regs(next->thread.fp_regs.fprs); \
+ restore_fp_vx_regs(next); \
restore_access_regs(&next->thread.acrs[0]); \
restore_ri_cb(next->thread.ri_cb, prev->thread.ri_cb); \
- update_cr_regs(next); \
} \
prev = __switch_to(prev,next); \
} while (0)
diff --git a/arch/s390/include/uapi/asm/sigcontext.h b/arch/s390/include/uapi/asm/sigcontext.h
index b30de9c01bbe..5f0b8d7ddb0b 100644
--- a/arch/s390/include/uapi/asm/sigcontext.h
+++ b/arch/s390/include/uapi/asm/sigcontext.h
@@ -7,10 +7,14 @@
#define _ASM_S390_SIGCONTEXT_H
#include <linux/compiler.h>
+#include <linux/types.h>
-#define __NUM_GPRS 16
-#define __NUM_FPRS 16
-#define __NUM_ACRS 16
+#define __NUM_GPRS 16
+#define __NUM_FPRS 16
+#define __NUM_ACRS 16
+#define __NUM_VXRS 32
+#define __NUM_VXRS_LOW 16
+#define __NUM_VXRS_HIGH 16
#ifndef __s390x__
@@ -59,6 +63,16 @@ typedef struct
_s390_fp_regs fpregs;
} _sigregs;
+typedef struct
+{
+#ifndef __s390x__
+ unsigned long gprs_high[__NUM_GPRS];
+#endif
+ unsigned long long vxrs_low[__NUM_VXRS_LOW];
+ __vector128 vxrs_high[__NUM_VXRS_HIGH];
+ unsigned char __reserved[128];
+} _sigregs_ext;
+
struct sigcontext
{
unsigned long oldmask[_SIGCONTEXT_NSIG_WORDS];
diff --git a/arch/s390/include/uapi/asm/types.h b/arch/s390/include/uapi/asm/types.h
index 038f2b9178a4..3c3951e3415b 100644
--- a/arch/s390/include/uapi/asm/types.h
+++ b/arch/s390/include/uapi/asm/types.h
@@ -17,6 +17,10 @@
typedef unsigned long addr_t;
typedef __signed__ long saddr_t;
+typedef struct {
+ __u32 u[4];
+} __vector128;
+
#endif /* __ASSEMBLY__ */
#endif /* _UAPI_S390_TYPES_H */
diff --git a/arch/s390/include/uapi/asm/ucontext.h b/arch/s390/include/uapi/asm/ucontext.h
index 3e077b2a4705..64a69aa5dde0 100644
--- a/arch/s390/include/uapi/asm/ucontext.h
+++ b/arch/s390/include/uapi/asm/ucontext.h
@@ -7,10 +7,15 @@
#ifndef _ASM_S390_UCONTEXT_H
#define _ASM_S390_UCONTEXT_H
-#define UC_EXTENDED 0x00000001
-
-#ifndef __s390x__
+#define UC_GPRS_HIGH 1 /* uc_mcontext_ext has valid high gprs */
+#define UC_VXRS 2 /* uc_mcontext_ext has valid vector regs */
+/*
+ * The struct ucontext_extended describes how the registers are stored
+ * on a rt signal frame. Please note that the structure is not fixed,
+ * if new CPU registers are added to the user state the size of the
+ * struct ucontext_extended will increase.
+ */
struct ucontext_extended {
unsigned long uc_flags;
struct ucontext *uc_link;
@@ -19,11 +24,9 @@ struct ucontext_extended {
sigset_t uc_sigmask;
/* Allow for uc_sigmask growth. Glibc uses a 1024-bit sigset_t. */
unsigned char __unused[128 - sizeof(sigset_t)];
- unsigned long uc_gprs_high[16];
+ _sigregs_ext uc_mcontext_ext;
};
-#endif
-
struct ucontext {
unsigned long uc_flags;
struct ucontext *uc_link;

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