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-rw-r--r--arch/sparc/include/asm/bitops_64.h5
-rw-r--r--arch/sparc/include/asm/clocksource.h17
-rw-r--r--arch/sparc/include/asm/cmpxchg_32.h3
-rw-r--r--arch/sparc/include/asm/elf_64.h14
-rw-r--r--arch/sparc/include/asm/mmu_64.h1
-rw-r--r--arch/sparc/include/asm/mmu_context_64.h2
-rw-r--r--arch/sparc/include/asm/processor_64.h8
-rw-r--r--arch/sparc/include/asm/tsb.h2
-rw-r--r--arch/sparc/include/asm/vdso.h24
-rw-r--r--arch/sparc/include/asm/vvar.h74
-rw-r--r--arch/sparc/include/uapi/asm/auxvec.h4
11 files changed, 151 insertions, 3 deletions
diff --git a/arch/sparc/include/asm/bitops_64.h b/arch/sparc/include/asm/bitops_64.h
index a90eea24b286..ca7ea5913494 100644
--- a/arch/sparc/include/asm/bitops_64.h
+++ b/arch/sparc/include/asm/bitops_64.h
@@ -23,10 +23,11 @@ void set_bit(unsigned long nr, volatile unsigned long *addr);
void clear_bit(unsigned long nr, volatile unsigned long *addr);
void change_bit(unsigned long nr, volatile unsigned long *addr);
+int fls(unsigned int word);
+int __fls(unsigned long word);
+
#include <asm-generic/bitops/non-atomic.h>
-#include <asm-generic/bitops/fls.h>
-#include <asm-generic/bitops/__fls.h>
#include <asm-generic/bitops/fls64.h>
#ifdef __KERNEL__
diff --git a/arch/sparc/include/asm/clocksource.h b/arch/sparc/include/asm/clocksource.h
new file mode 100644
index 000000000000..d63ef224befe
--- /dev/null
+++ b/arch/sparc/include/asm/clocksource.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2017 Oracle and/or its affiliates. All rights reserved.
+ */
+
+#ifndef _ASM_SPARC_CLOCKSOURCE_H
+#define _ASM_SPARC_CLOCKSOURCE_H
+
+/* VDSO clocksources */
+#define VCLOCK_NONE 0 /* Nothing userspace can do. */
+#define VCLOCK_TICK 1 /* Use %tick. */
+#define VCLOCK_STICK 2 /* Use %stick. */
+
+struct arch_clocksource_data {
+ int vclock_mode;
+};
+
+#endif /* _ASM_SPARC_CLOCKSOURCE_H */
diff --git a/arch/sparc/include/asm/cmpxchg_32.h b/arch/sparc/include/asm/cmpxchg_32.h
index 3e3823db303e..c73b5a3ab7b9 100644
--- a/arch/sparc/include/asm/cmpxchg_32.h
+++ b/arch/sparc/include/asm/cmpxchg_32.h
@@ -63,6 +63,9 @@ __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size)
(unsigned long)_n_, sizeof(*(ptr))); \
})
+u64 __cmpxchg_u64(u64 *ptr, u64 old, u64 new);
+#define cmpxchg64(ptr, old, new) __cmpxchg_u64(ptr, old, new)
+
#include <asm-generic/cmpxchg-local.h>
/*
diff --git a/arch/sparc/include/asm/elf_64.h b/arch/sparc/include/asm/elf_64.h
index 5894389f5ed5..25340df3570c 100644
--- a/arch/sparc/include/asm/elf_64.h
+++ b/arch/sparc/include/asm/elf_64.h
@@ -211,4 +211,18 @@ do { if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
(current->personality & (~PER_MASK))); \
} while (0)
+extern unsigned int vdso_enabled;
+
+#define ARCH_DLINFO \
+do { \
+ if (vdso_enabled) \
+ NEW_AUX_ENT(AT_SYSINFO_EHDR, \
+ (unsigned long)current->mm->context.vdso); \
+} while (0)
+
+struct linux_binprm;
+
+#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
+extern int arch_setup_additional_pages(struct linux_binprm *bprm,
+ int uses_interp);
#endif /* !(__ASM_SPARC64_ELF_H) */
diff --git a/arch/sparc/include/asm/mmu_64.h b/arch/sparc/include/asm/mmu_64.h
index 5fe64a57b4ba..ad4fb93508ba 100644
--- a/arch/sparc/include/asm/mmu_64.h
+++ b/arch/sparc/include/asm/mmu_64.h
@@ -97,6 +97,7 @@ typedef struct {
unsigned long thp_pte_count;
struct tsb_config tsb_block[MM_NUM_TSBS];
struct hv_tsb_descr tsb_descr[MM_NUM_TSBS];
+ void *vdso;
} mm_context_t;
#endif /* !__ASSEMBLY__ */
diff --git a/arch/sparc/include/asm/mmu_context_64.h b/arch/sparc/include/asm/mmu_context_64.h
index e25d25b0a34b..b361702ef52a 100644
--- a/arch/sparc/include/asm/mmu_context_64.h
+++ b/arch/sparc/include/asm/mmu_context_64.h
@@ -8,9 +8,11 @@
#include <linux/spinlock.h>
#include <linux/mm_types.h>
+#include <linux/smp.h>
#include <asm/spitfire.h>
#include <asm-generic/mm_hooks.h>
+#include <asm/percpu.h>
static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
{
diff --git a/arch/sparc/include/asm/processor_64.h b/arch/sparc/include/asm/processor_64.h
index c7c79fe8d265..aac23d4a4ddd 100644
--- a/arch/sparc/include/asm/processor_64.h
+++ b/arch/sparc/include/asm/processor_64.h
@@ -200,6 +200,13 @@ unsigned long get_wchan(struct task_struct *task);
* To make a long story short, we are trying to yield the current cpu
* strand during busy loops.
*/
+#ifdef BUILD_VDSO
+#define cpu_relax() asm volatile("\n99:\n\t" \
+ "rd %%ccr, %%g0\n\t" \
+ "rd %%ccr, %%g0\n\t" \
+ "rd %%ccr, %%g0\n\t" \
+ ::: "memory")
+#else /* ! BUILD_VDSO */
#define cpu_relax() asm volatile("\n99:\n\t" \
"rd %%ccr, %%g0\n\t" \
"rd %%ccr, %%g0\n\t" \
@@ -211,6 +218,7 @@ unsigned long get_wchan(struct task_struct *task);
"nop\n\t" \
".previous" \
::: "memory")
+#endif
/* Prefetch support. This is tuned for UltraSPARC-III and later.
* UltraSPARC-I will treat these as nops, and UltraSPARC-II has
diff --git a/arch/sparc/include/asm/tsb.h b/arch/sparc/include/asm/tsb.h
index 25b6abdb3908..522a677e050d 100644
--- a/arch/sparc/include/asm/tsb.h
+++ b/arch/sparc/include/asm/tsb.h
@@ -217,7 +217,7 @@ extern struct tsb_phys_patch_entry __tsb_phys_patch, __tsb_phys_patch_end;
sllx REG2, 32, REG2; \
andcc REG1, REG2, %g0; \
be,pt %xcc, 700f; \
- sethi %hi(0x1ffc0000), REG2; \
+ sethi %hi(0xffe00000), REG2; \
sllx REG2, 1, REG2; \
brgez,pn REG1, FAIL_LABEL; \
andn REG1, REG2, REG1; \
diff --git a/arch/sparc/include/asm/vdso.h b/arch/sparc/include/asm/vdso.h
new file mode 100644
index 000000000000..93b628731a5e
--- /dev/null
+++ b/arch/sparc/include/asm/vdso.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2017 Oracle and/or its affiliates. All rights reserved.
+ */
+
+#ifndef _ASM_SPARC_VDSO_H
+#define _ASM_SPARC_VDSO_H
+
+struct vdso_image {
+ void *data;
+ unsigned long size; /* Always a multiple of PAGE_SIZE */
+ long sym_vvar_start; /* Negative offset to the vvar area */
+ long sym_vread_tick; /* Start of vread_tick section */
+ long sym_vread_tick_patch_start; /* Start of tick read */
+ long sym_vread_tick_patch_end; /* End of tick read */
+};
+
+#ifdef CONFIG_SPARC64
+extern const struct vdso_image vdso_image_64_builtin;
+#endif
+#ifdef CONFIG_COMPAT
+extern const struct vdso_image vdso_image_32_builtin;
+#endif
+
+#endif /* _ASM_SPARC_VDSO_H */
diff --git a/arch/sparc/include/asm/vvar.h b/arch/sparc/include/asm/vvar.h
new file mode 100644
index 000000000000..0289503d1cb0
--- /dev/null
+++ b/arch/sparc/include/asm/vvar.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2017 Oracle and/or its affiliates. All rights reserved.
+ */
+
+#ifndef _ASM_SPARC_VVAR_DATA_H
+#define _ASM_SPARC_VVAR_DATA_H
+
+#include <asm/clocksource.h>
+#include <linux/seqlock.h>
+#include <linux/time.h>
+#include <linux/types.h>
+
+struct vvar_data {
+ unsigned int seq;
+
+ int vclock_mode;
+ struct { /* extract of a clocksource struct */
+ u64 cycle_last;
+ u64 mask;
+ int mult;
+ int shift;
+ } clock;
+ /* open coded 'struct timespec' */
+ u64 wall_time_sec;
+ u64 wall_time_snsec;
+ u64 monotonic_time_snsec;
+ u64 monotonic_time_sec;
+ u64 monotonic_time_coarse_sec;
+ u64 monotonic_time_coarse_nsec;
+ u64 wall_time_coarse_sec;
+ u64 wall_time_coarse_nsec;
+
+ int tz_minuteswest;
+ int tz_dsttime;
+};
+
+extern struct vvar_data *vvar_data;
+extern int vdso_fix_stick;
+
+static inline unsigned int vvar_read_begin(const struct vvar_data *s)
+{
+ unsigned int ret;
+
+repeat:
+ ret = READ_ONCE(s->seq);
+ if (unlikely(ret & 1)) {
+ cpu_relax();
+ goto repeat;
+ }
+ smp_rmb(); /* Finish all reads before we return seq */
+ return ret;
+}
+
+static inline int vvar_read_retry(const struct vvar_data *s,
+ unsigned int start)
+{
+ smp_rmb(); /* Finish all reads before checking the value of seq */
+ return unlikely(s->seq != start);
+}
+
+static inline void vvar_write_begin(struct vvar_data *s)
+{
+ ++s->seq;
+ smp_wmb(); /* Makes sure that increment of seq is reflected */
+}
+
+static inline void vvar_write_end(struct vvar_data *s)
+{
+ smp_wmb(); /* Makes the value of seq current before we increment */
+ ++s->seq;
+}
+
+
+#endif /* _ASM_SPARC_VVAR_DATA_H */
diff --git a/arch/sparc/include/uapi/asm/auxvec.h b/arch/sparc/include/uapi/asm/auxvec.h
index ad6f360261f6..5f80a70cc901 100644
--- a/arch/sparc/include/uapi/asm/auxvec.h
+++ b/arch/sparc/include/uapi/asm/auxvec.h
@@ -1,4 +1,8 @@
#ifndef __ASMSPARC_AUXVEC_H
#define __ASMSPARC_AUXVEC_H
+#define AT_SYSINFO_EHDR 33
+
+#define AT_VECTOR_SIZE_ARCH 1
+
#endif /* !(__ASMSPARC_AUXVEC_H) */
generated by cgit (git 2.34.1) at 2024-05-22 13:42:01 +0000