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-rw-r--r--arch/s390/include/asm/lowcore.h8
-rw-r--r--arch/s390/include/asm/mmu_context.h6
-rw-r--r--arch/s390/include/asm/processor.h22
-rw-r--r--arch/s390/include/asm/ptrace.h22
-rw-r--r--arch/s390/include/asm/syscall.h2
-rw-r--r--arch/s390/include/asm/thread_info.h32
6 files changed, 66 insertions, 26 deletions
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 3b476eb92f20..26e03ce27c50 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -93,7 +93,9 @@ struct _lowcore {
__u32 save_area_sync[8]; /* 0x0200 */
__u32 save_area_async[8]; /* 0x0220 */
__u32 save_area_restart[1]; /* 0x0240 */
- __u8 pad_0x0244[0x0248-0x0244]; /* 0x0244 */
+
+ /* CPU flags. */
+ __u32 cpu_flags; /* 0x0244 */
/* Return psws. */
psw_t return_psw; /* 0x0248 */
@@ -237,7 +239,9 @@ struct _lowcore {
__u64 save_area_sync[8]; /* 0x0200 */
__u64 save_area_async[8]; /* 0x0240 */
__u64 save_area_restart[1]; /* 0x0280 */
- __u8 pad_0x0288[0x0290-0x0288]; /* 0x0288 */
+
+ /* CPU flags. */
+ __u64 cpu_flags; /* 0x0288 */
/* Return psws. */
psw_t return_psw; /* 0x0290 */
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index 93ec0c8e4c83..056d7eff2a16 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -36,7 +36,7 @@ static inline void set_user_asce(struct mm_struct *mm)
S390_lowcore.user_asce = mm->context.asce_bits | __pa(pgd);
set_fs(current->thread.mm_segment);
- set_thread_flag(TIF_ASCE);
+ set_cpu_flag(CIF_ASCE);
}
static inline void clear_user_asce(void)
@@ -54,7 +54,7 @@ static inline void load_kernel_asce(void)
__ctl_store(asce, 1, 1);
if (asce != S390_lowcore.kernel_asce)
__ctl_load(S390_lowcore.kernel_asce, 1, 1);
- set_thread_flag(TIF_ASCE);
+ set_cpu_flag(CIF_ASCE);
}
static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
@@ -70,7 +70,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
__ctl_load(S390_lowcore.kernel_asce, 1, 1);
__ctl_load(S390_lowcore.kernel_asce, 7, 7);
/* Delay loading of the new ASCE to control registers CR1 & CR7 */
- set_thread_flag(TIF_ASCE);
+ set_cpu_flag(CIF_ASCE);
atomic_inc(&next->context.attach_count);
atomic_dec(&prev->context.attach_count);
if (MACHINE_HAS_TLB_LC)
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index dc5fc4f90e52..6f02d452bbee 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -11,6 +11,13 @@
#ifndef __ASM_S390_PROCESSOR_H
#define __ASM_S390_PROCESSOR_H
+#define CIF_MCCK_PENDING 0 /* machine check handling is pending */
+#define CIF_ASCE 1 /* user asce needs fixup / uaccess */
+
+#define _CIF_MCCK_PENDING (1<<CIF_MCCK_PENDING)
+#define _CIF_ASCE (1<<CIF_ASCE)
+
+
#ifndef __ASSEMBLY__
#include <linux/linkage.h>
@@ -21,6 +28,21 @@
#include <asm/setup.h>
#include <asm/runtime_instr.h>
+static inline void set_cpu_flag(int flag)
+{
+ S390_lowcore.cpu_flags |= (1U << flag);
+}
+
+static inline void clear_cpu_flag(int flag)
+{
+ S390_lowcore.cpu_flags &= ~(1U << flag);
+}
+
+static inline int test_cpu_flag(int flag)
+{
+ return !!(S390_lowcore.cpu_flags & (1U << flag));
+}
+
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter").
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index f4783c0b7b43..1b5300cd6d22 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -8,6 +8,12 @@
#include <uapi/asm/ptrace.h>
+#define PIF_SYSCALL 0 /* inside a system call */
+#define PIF_PER_TRAP 1 /* deliver sigtrap on return to user */
+
+#define _PIF_SYSCALL (1<<PIF_SYSCALL)
+#define _PIF_PER_TRAP (1<<PIF_PER_TRAP)
+
#ifndef __ASSEMBLY__
#define PSW_KERNEL_BITS (PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_ASC_HOME | \
@@ -29,6 +35,7 @@ struct pt_regs
unsigned int int_code;
unsigned int int_parm;
unsigned long int_parm_long;
+ unsigned long flags;
};
/*
@@ -79,6 +86,21 @@ struct per_struct_kernel {
#define PER_CONTROL_SUSPENSION 0x00400000UL
#define PER_CONTROL_ALTERATION 0x00200000UL
+static inline void set_pt_regs_flag(struct pt_regs *regs, int flag)
+{
+ regs->flags |= (1U << flag);
+}
+
+static inline void clear_pt_regs_flag(struct pt_regs *regs, int flag)
+{
+ regs->flags &= ~(1U << flag);
+}
+
+static inline int test_pt_regs_flag(struct pt_regs *regs, int flag)
+{
+ return !!(regs->flags & (1U << flag));
+}
+
/*
* These are defined as per linux/ptrace.h, which see.
*/
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index 777687055e7b..abad78d5b10c 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -28,7 +28,7 @@ extern const unsigned int sys_call_table_emu[];
static inline long syscall_get_nr(struct task_struct *task,
struct pt_regs *regs)
{
- return test_tsk_thread_flag(task, TIF_SYSCALL) ?
+ return test_pt_regs_flag(regs, PIF_SYSCALL) ?
(regs->int_code & 0xffff) : -1;
}
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index f3e5cad93b26..b833e9c0bfbf 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -77,30 +77,22 @@ static inline struct thread_info *current_thread_info(void)
/*
* thread information flags bit numbers
*/
-#define TIF_SYSCALL 0 /* inside a system call */
-#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */
-#define TIF_SIGPENDING 2 /* signal pending */
-#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
-#define TIF_ASCE 5 /* user asce needs fixup / uaccess */
-#define TIF_PER_TRAP 6 /* deliver sigtrap on return to user */
-#define TIF_MCCK_PENDING 7 /* machine check handling is pending */
-#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 17 /* 32bit process */
-#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
-#define TIF_RESTORE_SIGMASK 19 /* restore signal mask in do_signal() */
-#define TIF_SINGLE_STEP 20 /* This task is single stepped */
-#define TIF_BLOCK_STEP 21 /* This task is block stepped */
+#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_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() */
+#define TIF_SINGLE_STEP 19 /* This task is single stepped */
+#define TIF_BLOCK_STEP 20 /* This task is block stepped */
-#define _TIF_SYSCALL (1<<TIF_SYSCALL)
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
-#define _TIF_ASCE (1<<TIF_ASCE)
-#define _TIF_PER_TRAP (1<<TIF_PER_TRAP)
-#define _TIF_MCCK_PENDING (1<<TIF_MCCK_PENDING)
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 17:09:06 +0300