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authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-05 19:13:10 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-05 19:13:10 (GMT)
commit3591b19511ed88e2e82f64b7d7bf54a5f8d10363 (patch)
treed08896f1aeb2083960bdc5e8537ab9e8d56bd43c /arch/s390/include
parent45f5532a2f65afeda9e8a02bf1aca15c2b4c9be8 (diff)
parentfcc082f35c6d565d351b5b89bb03a82333e9ffe8 (diff)
Merge tag 's390-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky: - A copy of Arnds compat wrapper generation series - Pass information about the KVM guest to the host in form the control program code and the control program version code - Map IOV resources to support PCI physical functions on s390 - Add vector load and store alignment hints to improve performance - Use the "jdd" constraint with gcc 9 to make jump labels working again - Remove amode workaround for old z/VM releases from the DCSS code - Add support for in-kernel performance measurements using the CPU measurement counter facility - Introduce a new PMU device cpum_cf_diag to capture counters and store thenn as event raw data. - Bug fixes and cleanups * tag 's390-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits) Revert "s390/cpum_cf: Add kernel message exaplanations" s390/dasd: fix read device characteristic with CONFIG_VMAP_STACK=y s390/suspend: fix prefix register reset in swsusp_arch_resume s390: warn about clearing als implied facilities s390: allow overriding facilities via command line s390: clean up redundant facilities list setup s390/als: remove duplicated in-place implementation of stfle s390/cio: Use cpa range elsewhere within vfio-ccw s390/cio: Fix vfio-ccw handling of recursive TICs s390: vfio_ap: link the vfio_ap devices to the vfio_ap bus subsystem s390/cpum_cf: Handle EBUSY return code from CPU counter facility reservation s390/cpum_cf: Add kernel message exaplanations s390/cpum_cf_diag: Add support for s390 counter facility diagnostic trace s390/cpum_cf: add ctr_stcctm() function s390/cpum_cf: move common functions into a separate file s390/cpum_cf: introduce kernel_cpumcf_avail() function s390/cpu_mf: replace stcctm5() with the stcctm() function s390/cpu_mf: add store cpu counter multiple instruction support s390/cpum_cf: Add minimal in-kernel interface for counter measurements s390/cpum_cf: introduce kernel_cpumcf_alert() to obtain measurement alerts ...
Diffstat (limited to 'arch/s390/include')
-rw-r--r--arch/s390/include/asm/cpu_mcf.h126
-rw-r--r--arch/s390/include/asm/cpu_mf-insn.h22
-rw-r--r--arch/s390/include/asm/cpu_mf.h18
-rw-r--r--arch/s390/include/asm/diag.h12
-rw-r--r--arch/s390/include/asm/ftrace.h25
-rw-r--r--arch/s390/include/asm/jump_label.h14
-rw-r--r--arch/s390/include/asm/pci.h1
-rw-r--r--arch/s390/include/asm/perf_event.h2
-rw-r--r--arch/s390/include/asm/qdio.h4
-rw-r--r--arch/s390/include/asm/sclp.h1
-rw-r--r--arch/s390/include/asm/string.h28
-rw-r--r--arch/s390/include/asm/syscall_wrapper.h135
-rw-r--r--arch/s390/include/asm/vx-insn.h8
-rw-r--r--arch/s390/include/uapi/asm/posix_types.h6
14 files changed, 380 insertions, 22 deletions
diff --git a/arch/s390/include/asm/cpu_mcf.h b/arch/s390/include/asm/cpu_mcf.h
new file mode 100644
index 0000000..649b9fc
--- /dev/null
+++ b/arch/s390/include/asm/cpu_mcf.h
@@ -0,0 +1,126 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Counter facility support definitions for the Linux perf
+ *
+ * Copyright IBM Corp. 2019
+ * Author(s): Hendrik Brueckner <brueckner@linux.ibm.com>
+ */
+#ifndef _ASM_S390_CPU_MCF_H
+#define _ASM_S390_CPU_MCF_H
+
+#include <linux/perf_event.h>
+#include <asm/cpu_mf.h>
+
+enum cpumf_ctr_set {
+ CPUMF_CTR_SET_BASIC = 0, /* Basic Counter Set */
+ CPUMF_CTR_SET_USER = 1, /* Problem-State Counter Set */
+ CPUMF_CTR_SET_CRYPTO = 2, /* Crypto-Activity Counter Set */
+ CPUMF_CTR_SET_EXT = 3, /* Extended Counter Set */
+ CPUMF_CTR_SET_MT_DIAG = 4, /* MT-diagnostic Counter Set */
+
+ /* Maximum number of counter sets */
+ CPUMF_CTR_SET_MAX,
+};
+
+#define CPUMF_LCCTL_ENABLE_SHIFT 16
+#define CPUMF_LCCTL_ACTCTL_SHIFT 0
+static const u64 cpumf_ctr_ctl[CPUMF_CTR_SET_MAX] = {
+ [CPUMF_CTR_SET_BASIC] = 0x02,
+ [CPUMF_CTR_SET_USER] = 0x04,
+ [CPUMF_CTR_SET_CRYPTO] = 0x08,
+ [CPUMF_CTR_SET_EXT] = 0x01,
+ [CPUMF_CTR_SET_MT_DIAG] = 0x20,
+};
+
+static inline void ctr_set_enable(u64 *state, int ctr_set)
+{
+ *state |= cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ENABLE_SHIFT;
+}
+static inline void ctr_set_disable(u64 *state, int ctr_set)
+{
+ *state &= ~(cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ENABLE_SHIFT);
+}
+static inline void ctr_set_start(u64 *state, int ctr_set)
+{
+ *state |= cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ACTCTL_SHIFT;
+}
+static inline void ctr_set_stop(u64 *state, int ctr_set)
+{
+ *state &= ~(cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ACTCTL_SHIFT);
+}
+
+static inline void ctr_set_multiple_enable(u64 *state, u64 ctrsets)
+{
+ *state |= ctrsets << CPUMF_LCCTL_ENABLE_SHIFT;
+}
+
+static inline void ctr_set_multiple_disable(u64 *state, u64 ctrsets)
+{
+ *state &= ~(ctrsets << CPUMF_LCCTL_ENABLE_SHIFT);
+}
+
+static inline void ctr_set_multiple_start(u64 *state, u64 ctrsets)
+{
+ *state |= ctrsets << CPUMF_LCCTL_ACTCTL_SHIFT;
+}
+
+static inline void ctr_set_multiple_stop(u64 *state, u64 ctrsets)
+{
+ *state &= ~(ctrsets << CPUMF_LCCTL_ACTCTL_SHIFT);
+}
+
+static inline int ctr_stcctm(enum cpumf_ctr_set set, u64 range, u64 *dest)
+{
+ switch (set) {
+ case CPUMF_CTR_SET_BASIC:
+ return stcctm(BASIC, range, dest);
+ case CPUMF_CTR_SET_USER:
+ return stcctm(PROBLEM_STATE, range, dest);
+ case CPUMF_CTR_SET_CRYPTO:
+ return stcctm(CRYPTO_ACTIVITY, range, dest);
+ case CPUMF_CTR_SET_EXT:
+ return stcctm(EXTENDED, range, dest);
+ case CPUMF_CTR_SET_MT_DIAG:
+ return stcctm(MT_DIAG_CLEARING, range, dest);
+ case CPUMF_CTR_SET_MAX:
+ return 3;
+ }
+ return 3;
+}
+
+struct cpu_cf_events {
+ struct cpumf_ctr_info info;
+ atomic_t ctr_set[CPUMF_CTR_SET_MAX];
+ atomic64_t alert;
+ u64 state, tx_state;
+ unsigned int flags;
+ unsigned int txn_flags;
+};
+DECLARE_PER_CPU(struct cpu_cf_events, cpu_cf_events);
+
+bool kernel_cpumcf_avail(void);
+int __kernel_cpumcf_begin(void);
+unsigned long kernel_cpumcf_alert(int clear);
+void __kernel_cpumcf_end(void);
+
+static inline int kernel_cpumcf_begin(void)
+{
+ if (!cpum_cf_avail())
+ return -ENODEV;
+
+ preempt_disable();
+ return __kernel_cpumcf_begin();
+}
+static inline void kernel_cpumcf_end(void)
+{
+ __kernel_cpumcf_end();
+ preempt_enable();
+}
+
+/* Return true if store counter set multiple instruction is available */
+static inline int stccm_avail(void)
+{
+ return test_facility(142);
+}
+
+#endif /* _ASM_S390_CPU_MCF_H */
diff --git a/arch/s390/include/asm/cpu_mf-insn.h b/arch/s390/include/asm/cpu_mf-insn.h
new file mode 100644
index 0000000..a68b362
--- /dev/null
+++ b/arch/s390/include/asm/cpu_mf-insn.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Support for CPU-MF instructions
+ *
+ * Copyright IBM Corp. 2019
+ * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
+ */
+#ifndef _ASM_S390_CPU_MF_INSN_H
+#define _ASM_S390_CPU_MF_INSN_H
+
+#ifdef __ASSEMBLY__
+
+/* Macro to generate the STCCTM instruction with a customized
+ * M3 field designating the counter set.
+ */
+.macro STCCTM r1 m3 db2
+ .insn rsy,0xeb0000000017,\r1,\m3 & 0xf,\db2
+.endm
+
+#endif /* __ASSEMBLY__ */
+
+#endif
diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h
index bf2cbff..ae3e3221 100644
--- a/arch/s390/include/asm/cpu_mf.h
+++ b/arch/s390/include/asm/cpu_mf.h
@@ -12,6 +12,8 @@
#include <linux/errno.h>
#include <asm/facility.h>
+asm(".include \"asm/cpu_mf-insn.h\"\n");
+
#define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */
#define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */
#define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */
@@ -209,17 +211,25 @@ static inline int ecctr(u64 ctr, u64 *val)
return cc;
}
-/* Store CPU counter multiple for the MT utilization counter set */
-static inline int stcctm5(u64 num, u64 *val)
+/* Store CPU counter multiple for a particular counter set */
+enum stcctm_ctr_set {
+ EXTENDED = 0,
+ BASIC = 1,
+ PROBLEM_STATE = 2,
+ CRYPTO_ACTIVITY = 3,
+ MT_DIAG = 5,
+ MT_DIAG_CLEARING = 9, /* clears loss-of-MT-ctr-data alert */
+};
+static inline int stcctm(enum stcctm_ctr_set set, u64 range, u64 *dest)
{
int cc;
asm volatile (
- " .insn rsy,0xeb0000000017,%2,5,%1\n"
+ " STCCTM %2,%3,%1\n"
" ipm %0\n"
" srl %0,28\n"
: "=d" (cc)
- : "Q" (*val), "d" (num)
+ : "Q" (*dest), "d" (range), "i" (set)
: "cc", "memory");
return cc;
}
diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h
index cdbaad5..19562be 100644
--- a/arch/s390/include/asm/diag.h
+++ b/arch/s390/include/asm/diag.h
@@ -32,6 +32,7 @@ enum diag_stat_enum {
DIAG_STAT_X2FC,
DIAG_STAT_X304,
DIAG_STAT_X308,
+ DIAG_STAT_X318,
DIAG_STAT_X500,
NR_DIAG_STAT
};
@@ -293,6 +294,17 @@ struct diag26c_mac_resp {
u8 res[2];
} __aligned(8);
+#define CPNC_LINUX 0x4
+union diag318_info {
+ unsigned long val;
+ struct {
+ unsigned int cpnc : 8;
+ unsigned int cpvc_linux : 24;
+ unsigned char cpvc_distro[3];
+ unsigned char zero;
+ };
+};
+
int diag204(unsigned long subcode, unsigned long size, void *addr);
int diag224(void *ptr);
int diag26c(void *req, void *resp, enum diag26c_sc subcode);
diff --git a/arch/s390/include/asm/ftrace.h b/arch/s390/include/asm/ftrace.h
index 8ea270f..5a3c95b 100644
--- a/arch/s390/include/asm/ftrace.h
+++ b/arch/s390/include/asm/ftrace.h
@@ -81,5 +81,30 @@ static inline void ftrace_generate_call_insn(struct ftrace_insn *insn,
#endif
}
+/*
+ * Even though the system call numbers are identical for s390/s390x a
+ * different system call table is used for compat tasks. This may lead
+ * to e.g. incorrect or missing trace event sysfs files.
+ * Therefore simply do not trace compat system calls at all.
+ * See kernel/trace/trace_syscalls.c.
+ */
+#define ARCH_TRACE_IGNORE_COMPAT_SYSCALLS
+static inline bool arch_trace_is_compat_syscall(struct pt_regs *regs)
+{
+ return is_compat_task();
+}
+
+#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
+static inline bool arch_syscall_match_sym_name(const char *sym,
+ const char *name)
+{
+ /*
+ * Skip __s390_ and __s390x_ prefix - due to compat wrappers
+ * and aliasing some symbols of 64 bit system call functions
+ * may get the __s390_ prefix instead of the __s390x_ prefix.
+ */
+ return !strcmp(sym + 7, name) || !strcmp(sym + 8, name);
+}
+
#endif /* __ASSEMBLY__ */
#endif /* _ASM_S390_FTRACE_H */
diff --git a/arch/s390/include/asm/jump_label.h b/arch/s390/include/asm/jump_label.h
index e2d3e6c..e548ec1 100644
--- a/arch/s390/include/asm/jump_label.h
+++ b/arch/s390/include/asm/jump_label.h
@@ -10,6 +10,12 @@
#define JUMP_LABEL_NOP_SIZE 6
#define JUMP_LABEL_NOP_OFFSET 2
+#if __GNUC__ < 9
+#define JUMP_LABEL_STATIC_KEY_CONSTRAINT "X"
+#else
+#define JUMP_LABEL_STATIC_KEY_CONSTRAINT "jdd"
+#endif
+
/*
* We use a brcl 0,2 instruction for jump labels at compile time so it
* can be easily distinguished from a hotpatch generated instruction.
@@ -20,9 +26,9 @@ static inline bool arch_static_branch(struct static_key *key, bool branch)
".pushsection __jump_table,\"aw\"\n"
".balign 8\n"
".long 0b-.,%l[label]-.\n"
- ".quad %0-.\n"
+ ".quad %0+%1-.\n"
".popsection\n"
- : : "X" (&((char *)key)[branch]) : : label);
+ : : JUMP_LABEL_STATIC_KEY_CONSTRAINT (key), "i" (branch) : : label);
return false;
label:
return true;
@@ -34,9 +40,9 @@ static inline bool arch_static_branch_jump(struct static_key *key, bool branch)
".pushsection __jump_table,\"aw\"\n"
".balign 8\n"
".long 0b-.,%l[label]-.\n"
- ".quad %0-.\n"
+ ".quad %0+%1-.\n"
".popsection\n"
- : : "X" (&((char *)key)[branch]) : : label);
+ : : JUMP_LABEL_STATIC_KEY_CONSTRAINT (key), "i" (branch) : : label);
return false;
label:
return true;
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index 10fe982..4e0efeb 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -148,7 +148,6 @@ struct zpci_dev {
enum pci_bus_speed max_bus_speed;
struct dentry *debugfs_dev;
- struct dentry *debugfs_perf;
struct s390_domain *s390_domain; /* s390 IOMMU domain data */
};
diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h
index b9c0e36..560d8f7 100644
--- a/arch/s390/include/asm/perf_event.h
+++ b/arch/s390/include/asm/perf_event.h
@@ -12,7 +12,6 @@
#include <linux/perf_event.h>
#include <linux/device.h>
-#include <asm/cpu_mf.h>
/* Per-CPU flags for PMU states */
#define PMU_F_RESERVED 0x1000
@@ -55,6 +54,7 @@ struct perf_sf_sde_regs {
#define PERF_CPUM_SF_MAX_CTR 2
#define PERF_EVENT_CPUM_SF 0xB0000UL /* Event: Basic-sampling */
#define PERF_EVENT_CPUM_SF_DIAG 0xBD000UL /* Event: Combined-sampling */
+#define PERF_EVENT_CPUM_CF_DIAG 0xBC000UL /* Event: Counter sets */
#define PERF_CPUM_SF_BASIC_MODE 0x0001 /* Basic-sampling flag */
#define PERF_CPUM_SF_DIAG_MODE 0x0002 /* Diagnostic-sampling flag */
#define PERF_CPUM_SF_MODE_MASK (PERF_CPUM_SF_BASIC_MODE| \
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index d46edde..db5ef22 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -361,8 +361,8 @@ struct qdio_initialize {
unsigned long);
int scan_threshold;
unsigned long int_parm;
- void **input_sbal_addr_array;
- void **output_sbal_addr_array;
+ struct qdio_buffer **input_sbal_addr_array;
+ struct qdio_buffer **output_sbal_addr_array;
struct qdio_outbuf_state *output_sbal_state_array;
};
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h
index 0cd4bda..ef4c9de 100644
--- a/arch/s390/include/asm/sclp.h
+++ b/arch/s390/include/asm/sclp.h
@@ -78,6 +78,7 @@ struct sclp_info {
unsigned char has_skey : 1;
unsigned char has_kss : 1;
unsigned char has_gisaf : 1;
+ unsigned char has_diag318 : 1;
unsigned int ibc;
unsigned int mtid;
unsigned int mtid_cp;
diff --git a/arch/s390/include/asm/string.h b/arch/s390/include/asm/string.h
index 116cc15..70d87db 100644
--- a/arch/s390/include/asm/string.h
+++ b/arch/s390/include/asm/string.h
@@ -12,15 +12,21 @@
#include <linux/types.h>
#endif
-#define __HAVE_ARCH_MEMCHR /* inline & arch function */
-#define __HAVE_ARCH_MEMCMP /* arch function */
#define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */
#define __HAVE_ARCH_MEMMOVE /* gcc builtin & arch function */
-#define __HAVE_ARCH_MEMSCAN /* inline & arch function */
#define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */
#define __HAVE_ARCH_MEMSET16 /* arch function */
#define __HAVE_ARCH_MEMSET32 /* arch function */
#define __HAVE_ARCH_MEMSET64 /* arch function */
+
+void *memcpy(void *dest, const void *src, size_t n);
+void *memset(void *s, int c, size_t n);
+void *memmove(void *dest, const void *src, size_t n);
+
+#ifndef CONFIG_KASAN
+#define __HAVE_ARCH_MEMCHR /* inline & arch function */
+#define __HAVE_ARCH_MEMCMP /* arch function */
+#define __HAVE_ARCH_MEMSCAN /* inline & arch function */
#define __HAVE_ARCH_STRCAT /* inline & arch function */
#define __HAVE_ARCH_STRCMP /* arch function */
#define __HAVE_ARCH_STRCPY /* inline & arch function */
@@ -35,9 +41,6 @@
/* Prototypes for non-inlined arch strings functions. */
int memcmp(const void *s1, const void *s2, size_t n);
-void *memcpy(void *dest, const void *src, size_t n);
-void *memset(void *s, int c, size_t n);
-void *memmove(void *dest, const void *src, size_t n);
int strcmp(const char *s1, const char *s2);
size_t strlcat(char *dest, const char *src, size_t n);
size_t strlcpy(char *dest, const char *src, size_t size);
@@ -45,6 +48,7 @@ char *strncat(char *dest, const char *src, size_t n);
char *strncpy(char *dest, const char *src, size_t n);
char *strrchr(const char *s, int c);
char *strstr(const char *s1, const char *s2);
+#endif /* !CONFIG_KASAN */
#undef __HAVE_ARCH_STRCHR
#undef __HAVE_ARCH_STRNCHR
@@ -95,6 +99,7 @@ static inline void *memset64(uint64_t *s, uint64_t v, size_t count)
#if !defined(IN_ARCH_STRING_C) && (!defined(CONFIG_FORTIFY_SOURCE) || defined(__NO_FORTIFY))
+#ifdef __HAVE_ARCH_MEMCHR
static inline void *memchr(const void * s, int c, size_t n)
{
register int r0 asm("0") = (char) c;
@@ -109,7 +114,9 @@ static inline void *memchr(const void * s, int c, size_t n)
: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
return (void *) ret;
}
+#endif
+#ifdef __HAVE_ARCH_MEMSCAN
static inline void *memscan(void *s, int c, size_t n)
{
register int r0 asm("0") = (char) c;
@@ -121,7 +128,9 @@ static inline void *memscan(void *s, int c, size_t n)
: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
return (void *) ret;
}
+#endif
+#ifdef __HAVE_ARCH_STRCAT
static inline char *strcat(char *dst, const char *src)
{
register int r0 asm("0") = 0;
@@ -137,7 +146,9 @@ static inline char *strcat(char *dst, const char *src)
: "d" (r0), "0" (0) : "cc", "memory" );
return ret;
}
+#endif
+#ifdef __HAVE_ARCH_STRCPY
static inline char *strcpy(char *dst, const char *src)
{
register int r0 asm("0") = 0;
@@ -150,7 +161,9 @@ static inline char *strcpy(char *dst, const char *src)
: "cc", "memory");
return ret;
}
+#endif
+#ifdef __HAVE_ARCH_STRLEN
static inline size_t strlen(const char *s)
{
register unsigned long r0 asm("0") = 0;
@@ -162,7 +175,9 @@ static inline size_t strlen(const char *s)
: "+d" (r0), "+a" (tmp) : : "cc", "memory");
return r0 - (unsigned long) s;
}
+#endif
+#ifdef __HAVE_ARCH_STRNLEN
static inline size_t strnlen(const char * s, size_t n)
{
register int r0 asm("0") = 0;
@@ -175,6 +190,7 @@ static inline size_t strnlen(const char * s, size_t n)
: "+a" (end), "+a" (tmp) : "d" (r0) : "cc", "memory");
return end - s;
}
+#endif
#else /* IN_ARCH_STRING_C */
void *memchr(const void * s, int c, size_t n);
void *memscan(void *s, int c, size_t n);
diff --git a/arch/s390/include/asm/syscall_wrapper.h b/arch/s390/include/asm/syscall_wrapper.h
new file mode 100644
index 0000000..5596c5c
--- /dev/null
+++ b/arch/s390/include/asm/syscall_wrapper.h
@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * syscall_wrapper.h - s390 specific wrappers to syscall definitions
+ *
+ */
+
+#ifndef _ASM_S390_SYSCALL_WRAPPER_H
+#define _ASM_S390_SYSCALL_WRAPPER_H
+
+#ifdef CONFIG_COMPAT
+#define __SC_COMPAT_TYPE(t, a) \
+ __typeof(__builtin_choose_expr(sizeof(t) > 4, 0L, (t)0)) a
+
+#define __SC_COMPAT_CAST(t, a) \
+({ \
+ long __ReS = a; \
+ \
+ BUILD_BUG_ON((sizeof(t) > 4) && !__TYPE_IS_L(t) && \
+ !__TYPE_IS_UL(t) && !__TYPE_IS_PTR(t) && \
+ !__TYPE_IS_LL(t)); \
+ if (__TYPE_IS_L(t)) \
+ __ReS = (s32)a; \
+ if (__TYPE_IS_UL(t)) \
+ __ReS = (u32)a; \
+ if (__TYPE_IS_PTR(t)) \
+ __ReS = a & 0x7fffffff; \
+ if (__TYPE_IS_LL(t)) \
+ return -ENOSYS; \
+ (t)__ReS; \
+})
+
+#define __S390_SYS_STUBx(x, name, ...) \
+ asmlinkage long __s390_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
+ ALLOW_ERROR_INJECTION(__s390_sys##name, ERRNO); \
+ asmlinkage long __s390_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
+ { \
+ long ret = __s390x_sys##name(__MAP(x,__SC_COMPAT_CAST,__VA_ARGS__));\
+ __MAP(x,__SC_TEST,__VA_ARGS__); \
+ return ret; \
+ }
+
+/*
+ * To keep the naming coherent, re-define SYSCALL_DEFINE0 to create an alias
+ * named __s390x_sys_*()
+ */
+#define COMPAT_SYSCALL_DEFINE0(sname) \
+ SYSCALL_METADATA(_##sname, 0); \
+ asmlinkage long __s390_compat_sys_##sname(void); \
+ ALLOW_ERROR_INJECTION(__s390_compat__sys_##sname, ERRNO); \
+ asmlinkage long __s390_compat_sys_##sname(void)
+
+#define SYSCALL_DEFINE0(sname) \
+ SYSCALL_METADATA(_##sname, 0); \
+ asmlinkage long __s390x_sys_##sname(void); \
+ ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO); \
+ asmlinkage long __s390_sys_##sname(void) \
+ __attribute__((alias(__stringify(__s390x_sys_##sname)))); \
+ asmlinkage long __s390x_sys_##sname(void)
+
+#define COND_SYSCALL(name) \
+ cond_syscall(__s390x_sys_##name); \
+ cond_syscall(__s390_sys_##name)
+
+#define SYS_NI(name) \
+ SYSCALL_ALIAS(__s390x_sys_##name, sys_ni_posix_timers); \
+ SYSCALL_ALIAS(__s390_sys_##name, sys_ni_posix_timers)
+
+#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
+ __diag_push(); \
+ __diag_ignore(GCC, 8, "-Wattribute-alias", \
+ "Type aliasing is used to sanitize syscall arguments");\
+ asmlinkage long __s390_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
+ asmlinkage long __s390_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
+ __attribute__((alias(__stringify(__se_compat_sys##name)))); \
+ ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \
+ static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
+ asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
+ asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
+ { \
+ long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\
+ __MAP(x,__SC_TEST,__VA_ARGS__); \
+ return ret; \
+ } \
+ __diag_pop(); \
+ static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
+
+/*
+ * As some compat syscalls may not be implemented, we need to expand
+ * COND_SYSCALL_COMPAT in kernel/sys_ni.c and COMPAT_SYS_NI in
+ * kernel/time/posix-stubs.c to cover this case as well.
+ */
+#define COND_SYSCALL_COMPAT(name) \
+ cond_syscall(__s390_compat_sys_##name)
+
+#define COMPAT_SYS_NI(name) \
+ SYSCALL_ALIAS(__s390_compat_sys_##name, sys_ni_posix_timers)
+
+#else /* CONFIG_COMPAT */
+
+#define __S390_SYS_STUBx(x, fullname, name, ...)
+
+#define SYSCALL_DEFINE0(sname) \
+ SYSCALL_METADATA(_##sname, 0); \
+ asmlinkage long __s390x_sys_##sname(void); \
+ ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO); \
+ asmlinkage long __s390x_sys_##sname(void)
+
+#define COND_SYSCALL(name) \
+ cond_syscall(__s390x_sys_##name)
+
+#define SYS_NI(name) \
+ SYSCALL_ALIAS(__s390x_sys_##name, sys_ni_posix_timers);
+
+#endif /* CONFIG_COMPAT */
+
+#define __SYSCALL_DEFINEx(x, name, ...) \
+ __diag_push(); \
+ __diag_ignore(GCC, 8, "-Wattribute-alias", \
+ "Type aliasing is used to sanitize syscall arguments");\
+ asmlinkage long __s390x_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
+ __attribute__((alias(__stringify(__se_sys##name)))); \
+ ALLOW_ERROR_INJECTION(__s390x_sys##name, ERRNO); \
+ static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
+ static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
+ __S390_SYS_STUBx(x, name, __VA_ARGS__) \
+ asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
+ { \
+ long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \
+ __MAP(x,__SC_TEST,__VA_ARGS__); \
+ return ret; \
+ } \
+ __diag_pop(); \
+ static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
+
+#endif /* _ASM_X86_SYSCALL_WRAPPER_H */
diff --git a/arch/s390/include/asm/vx-insn.h b/arch/s390/include/asm/vx-insn.h
index 266a723..0c05a67 100644
--- a/arch/s390/include/asm/vx-insn.h
+++ b/arch/s390/include/asm/vx-insn.h
@@ -363,23 +363,23 @@
.endm
/* VECTOR LOAD MULTIPLE */
-.macro VLM vfrom, vto, disp, base
+.macro VLM vfrom, vto, disp, base, hint=3
VX_NUM v1, \vfrom
VX_NUM v3, \vto
GR_NUM b2, \base /* Base register */
.word 0xE700 | ((v1&15) << 4) | (v3&15)
.word (b2 << 12) | (\disp)
- MRXBOPC 0, 0x36, v1, v3
+ MRXBOPC \hint, 0x36, v1, v3
.endm
/* VECTOR STORE MULTIPLE */
-.macro VSTM vfrom, vto, disp, base
+.macro VSTM vfrom, vto, disp, base, hint=3
VX_NUM v1, \vfrom
VX_NUM v3, \vto
GR_NUM b2, \base /* Base register */
.word 0xE700 | ((v1&15) << 4) | (v3&15)
.word (b2 << 12) | (\disp)
- MRXBOPC 0, 0x3E, v1, v3
+ MRXBOPC \hint, 0x3E, v1, v3
.endm
/* VECTOR PERMUTE */
diff --git a/arch/s390/include/uapi/asm/posix_types.h b/arch/s390/include/uapi/asm/posix_types.h
index 2a3fc63..1913613 100644
--- a/arch/s390/include/uapi/asm/posix_types.h
+++ b/arch/s390/include/uapi/asm/posix_types.h
@@ -20,6 +20,12 @@ typedef long __kernel_ssize_t;
typedef unsigned short __kernel_old_dev_t;
#define __kernel_old_dev_t __kernel_old_dev_t
+#ifdef __KERNEL__
+typedef unsigned short __kernel_old_uid_t;
+typedef unsigned short __kernel_old_gid_t;
+#define __kernel_old_uid_t __kernel_old_uid_t
+#endif
+
#ifndef __s390x__
typedef unsigned long __kernel_ino_t;

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