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-rw-r--r--arch/s390/include/asm/elf.h1
-rw-r--r--arch/s390/include/asm/lowcore.h9
-rw-r--r--arch/s390/include/asm/nmi.h12
-rw-r--r--arch/s390/include/asm/processor.h5
-rw-r--r--arch/s390/include/asm/setup.h2
-rw-r--r--arch/s390/include/asm/switch_to.h3
-rw-r--r--arch/s390/include/asm/thread_info.h12
7 files changed, 32 insertions, 12 deletions
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index 1d48880b3cc1..e8f623041769 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -105,6 +105,7 @@
#define HWCAP_S390_VXRS 2048
#define HWCAP_S390_VXRS_BCD 4096
#define HWCAP_S390_VXRS_EXT 8192
+#define HWCAP_S390_GS 16384
/* Internal bits, not exposed via elf */
#define HWCAP_INT_SIE 1UL
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 61261e0e95c0..8a5b082797f8 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -157,8 +157,8 @@ struct lowcore {
__u64 stfle_fac_list[32]; /* 0x0f00 */
__u8 pad_0x1000[0x11b0-0x1000]; /* 0x1000 */
- /* Pointer to vector register save area */
- __u64 vector_save_area_addr; /* 0x11b0 */
+ /* Pointer to the machine check extended save area */
+ __u64 mcesad; /* 0x11b0 */
/* 64 bit extparam used for pfault/diag 250: defined by architecture */
__u64 ext_params2; /* 0x11B8 */
@@ -182,10 +182,7 @@ struct lowcore {
/* Transaction abort diagnostic block */
__u8 pgm_tdb[256]; /* 0x1800 */
- __u8 pad_0x1900[0x1c00-0x1900]; /* 0x1900 */
-
- /* Software defined save area for vector registers */
- __u8 vector_save_area[1024]; /* 0x1c00 */
+ __u8 pad_0x1900[0x2000-0x1900]; /* 0x1900 */
} __packed;
#define S390_lowcore (*((struct lowcore *) 0))
diff --git a/arch/s390/include/asm/nmi.h b/arch/s390/include/asm/nmi.h
index b75fd910386a..e3e8895f5d3e 100644
--- a/arch/s390/include/asm/nmi.h
+++ b/arch/s390/include/asm/nmi.h
@@ -58,7 +58,9 @@ union mci {
u64 ie : 1; /* 32 indirect storage error */
u64 ar : 1; /* 33 access register validity */
u64 da : 1; /* 34 delayed access exception */
- u64 : 7; /* 35-41 */
+ u64 : 1; /* 35 */
+ u64 gs : 1; /* 36 guarded storage registers */
+ u64 : 5; /* 37-41 */
u64 pr : 1; /* 42 tod programmable register validity */
u64 fc : 1; /* 43 fp control register validity */
u64 ap : 1; /* 44 ancillary report */
@@ -69,6 +71,14 @@ union mci {
};
};
+#define MCESA_ORIGIN_MASK (~0x3ffUL)
+#define MCESA_LC_MASK (0xfUL)
+
+struct mcesa {
+ u8 vector_save_area[1024];
+ u8 guarded_storage_save_area[32];
+};
+
struct pt_regs;
extern void s390_handle_mcck(void);
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index e4988710aa86..cc101f9371cb 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -135,6 +135,8 @@ struct thread_struct {
struct list_head list;
/* cpu runtime instrumentation */
struct runtime_instr_cb *ri_cb;
+ struct gs_cb *gs_cb; /* Current guarded storage cb */
+ struct gs_cb *gs_bc_cb; /* Broadcast guarded storage cb */
unsigned char trap_tdb[256]; /* Transaction abort diagnose block */
/*
* Warning: 'fpu' is dynamically-sized. It *MUST* be at
@@ -215,6 +217,9 @@ void show_cacheinfo(struct seq_file *m);
/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
+/* Free guarded storage control block for current */
+void exit_thread_gs(void);
+
/*
* Return saved PC of a blocked thread.
*/
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 30bdb5a027f3..383bd8358a8c 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -31,6 +31,7 @@
#define MACHINE_FLAG_VX _BITUL(13)
#define MACHINE_FLAG_CAD _BITUL(14)
#define MACHINE_FLAG_NX _BITUL(15)
+#define MACHINE_FLAG_GS _BITUL(16)
#define LPP_MAGIC _BITUL(31)
#define LPP_PFAULT_PID_MASK _AC(0xffffffff, UL)
@@ -70,6 +71,7 @@ extern void detect_memory_memblock(void);
#define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
#define MACHINE_HAS_CAD (S390_lowcore.machine_flags & MACHINE_FLAG_CAD)
#define MACHINE_HAS_NX (S390_lowcore.machine_flags & MACHINE_FLAG_NX)
+#define MACHINE_HAS_GS (S390_lowcore.machine_flags & MACHINE_FLAG_GS)
/*
* Console mode. Override with conmode=
diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h
index 12d45f0cfdd9..f6c2b5814ab0 100644
--- a/arch/s390/include/asm/switch_to.h
+++ b/arch/s390/include/asm/switch_to.h
@@ -10,6 +10,7 @@
#include <linux/thread_info.h>
#include <asm/fpu/api.h>
#include <asm/ptrace.h>
+#include <asm/guarded_storage.h>
extern struct task_struct *__switch_to(void *, void *);
extern void update_cr_regs(struct task_struct *task);
@@ -33,12 +34,14 @@ static inline void restore_access_regs(unsigned int *acrs)
save_fpu_regs(); \
save_access_regs(&prev->thread.acrs[0]); \
save_ri_cb(prev->thread.ri_cb); \
+ save_gs_cb(prev->thread.gs_cb); \
} \
if (next->mm) { \
update_cr_regs(next); \
set_cpu_flag(CIF_FPU); \
restore_access_regs(&next->thread.acrs[0]); \
restore_ri_cb(next->thread.ri_cb, prev->thread.ri_cb); \
+ restore_gs_cb(next->thread.gs_cb); \
} \
prev = __switch_to(prev,next); \
} while (0)
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index a5b54a445eb8..f36e6e2b73f0 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -54,11 +54,12 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
#define TIF_NOTIFY_RESUME 0 /* callback before returning to user */
#define TIF_SIGPENDING 1 /* signal pending */
#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
-#define TIF_SYSCALL_TRACE 3 /* syscall trace active */
-#define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */
-#define TIF_SECCOMP 5 /* secure computing */
-#define TIF_SYSCALL_TRACEPOINT 6 /* syscall tracepoint instrumentation */
-#define TIF_UPROBE 7 /* breakpointed or single-stepping */
+#define TIF_UPROBE 3 /* breakpointed or single-stepping */
+#define TIF_GUARDED_STORAGE 4 /* load guarded storage control block */
+#define TIF_SYSCALL_TRACE 8 /* syscall trace active */
+#define TIF_SYSCALL_AUDIT 9 /* syscall auditing active */
+#define TIF_SECCOMP 10 /* secure computing */
+#define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */
#define TIF_31BIT 16 /* 32bit process */
#define TIF_MEMDIE 17 /* is terminating due to OOM killer */
#define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal() */
@@ -76,5 +77,6 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
#define _TIF_UPROBE _BITUL(TIF_UPROBE)
#define _TIF_31BIT _BITUL(TIF_31BIT)
#define _TIF_SINGLE_STEP _BITUL(TIF_SINGLE_STEP)
+#define _TIF_GUARDED_STORAGE _BITUL(TIF_GUARDED_STORAGE)
#endif /* _ASM_THREAD_INFO_H */
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-04 21:02:07 +0300