summaryrefslogtreecommitdiff
path: root/arch/sparc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/Kconfig2
-rw-r--r--arch/sparc/include/asm/Kbuild1
-rw-r--r--arch/sparc/include/asm/uaccess_64.h22
-rw-r--r--arch/sparc/kernel/iommu_common.h2
-rw-r--r--arch/sparc/kernel/perf_event.c24
-rw-r--r--arch/sparc/kernel/time_32.c21
-rw-r--r--arch/sparc/kernel/time_64.c14
-rw-r--r--arch/sparc/mm/fault_64.c5
8 files changed, 48 insertions, 43 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index e49502acbab4..56442d2d7bbc 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -25,6 +25,7 @@ config SPARC
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
select RTC_CLASS
select RTC_DRV_M48T59
+ select RTC_SYSTOHC
select HAVE_DMA_ATTRS
select HAVE_DMA_API_DEBUG
select HAVE_ARCH_JUMP_LABEL if SPARC64
@@ -35,7 +36,6 @@ config SPARC
select HAVE_BPF_JIT
select HAVE_DEBUG_BUGVERBOSE
select GENERIC_SMP_IDLE_THREAD
- select GENERIC_CMOS_UPDATE
select GENERIC_CLOCKEVENTS
select GENERIC_STRNCPY_FROM_USER
select GENERIC_STRNLEN_USER
diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild
index 94f36e7086a7..2b2a69dcc467 100644
--- a/arch/sparc/include/asm/Kbuild
+++ b/arch/sparc/include/asm/Kbuild
@@ -15,7 +15,6 @@ generic-y += mcs_spinlock.h
generic-y += module.h
generic-y += mutex.h
generic-y += preempt.h
-generic-y += scatterlist.h
generic-y += serial.h
generic-y += trace_clock.h
generic-y += types.h
diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
index a35194b7dba0..ea6e9a20f3ff 100644
--- a/arch/sparc/include/asm/uaccess_64.h
+++ b/arch/sparc/include/asm/uaccess_64.h
@@ -49,6 +49,28 @@ do { \
__asm__ __volatile__ ("wr %%g0, %0, %%asi" : : "r" ((val).seg)); \
} while(0)
+/*
+ * Test whether a block of memory is a valid user space address.
+ * Returns 0 if the range is valid, nonzero otherwise.
+ */
+static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, unsigned long limit)
+{
+ if (__builtin_constant_p(size))
+ return addr > limit - size;
+
+ addr += size;
+ if (addr < size)
+ return true;
+
+ return addr > limit;
+}
+
+#define __range_not_ok(addr, size, limit) \
+({ \
+ __chk_user_ptr(addr); \
+ __chk_range_not_ok((unsigned long __force)(addr), size, limit); \
+})
+
static inline int __access_ok(const void __user * addr, unsigned long size)
{
return 1;
diff --git a/arch/sparc/kernel/iommu_common.h b/arch/sparc/kernel/iommu_common.h
index f4be0d724fc6..b40cec252905 100644
--- a/arch/sparc/kernel/iommu_common.h
+++ b/arch/sparc/kernel/iommu_common.h
@@ -13,9 +13,9 @@
#include <linux/scatterlist.h>
#include <linux/device.h>
#include <linux/iommu-helper.h>
+#include <linux/scatterlist.h>
#include <asm/iommu.h>
-#include <asm/scatterlist.h>
/*
* These give mapping size of each iommu pte/tlb.
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index 59cf917a77b5..689db65f8529 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -21,7 +21,7 @@
#include <asm/stacktrace.h>
#include <asm/cpudata.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <linux/atomic.h>
#include <asm/nmi.h>
#include <asm/pcr.h>
@@ -1741,18 +1741,31 @@ void perf_callchain_kernel(struct perf_callchain_entry *entry,
} while (entry->nr < PERF_MAX_STACK_DEPTH);
}
+static inline int
+valid_user_frame(const void __user *fp, unsigned long size)
+{
+ /* addresses should be at least 4-byte aligned */
+ if (((unsigned long) fp) & 3)
+ return 0;
+
+ return (__range_not_ok(fp, size, TASK_SIZE) == 0);
+}
+
static void perf_callchain_user_64(struct perf_callchain_entry *entry,
struct pt_regs *regs)
{
unsigned long ufp;
- ufp = regs->u_regs[UREG_I6] + STACK_BIAS;
+ ufp = regs->u_regs[UREG_FP] + STACK_BIAS;
do {
struct sparc_stackf __user *usf;
struct sparc_stackf sf;
unsigned long pc;
usf = (struct sparc_stackf __user *)ufp;
+ if (!valid_user_frame(usf, sizeof(sf)))
+ break;
+
if (__copy_from_user_inatomic(&sf, usf, sizeof(sf)))
break;
@@ -1767,7 +1780,7 @@ static void perf_callchain_user_32(struct perf_callchain_entry *entry,
{
unsigned long ufp;
- ufp = regs->u_regs[UREG_I6] & 0xffffffffUL;
+ ufp = regs->u_regs[UREG_FP] & 0xffffffffUL;
do {
unsigned long pc;
@@ -1803,8 +1816,13 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
return;
flushw_user();
+
+ pagefault_disable();
+
if (test_thread_flag(TIF_32BIT))
perf_callchain_user_32(entry, regs);
else
perf_callchain_user_64(entry, regs);
+
+ pagefault_enable();
}
diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c
index 8caf45ee81d9..c9692f387cee 100644
--- a/arch/sparc/kernel/time_32.c
+++ b/arch/sparc/kernel/time_32.c
@@ -23,7 +23,6 @@
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/time.h>
-#include <linux/rtc.h>
#include <linux/rtc/m48t59.h>
#include <linux/timex.h>
#include <linux/clocksource.h>
@@ -65,8 +64,6 @@ DEFINE_PER_CPU(struct clock_event_device, sparc32_clockevent);
DEFINE_SPINLOCK(rtc_lock);
EXPORT_SYMBOL(rtc_lock);
-static int set_rtc_mmss(unsigned long);
-
unsigned long profile_pc(struct pt_regs *regs)
{
extern char __copy_user_begin[], __copy_user_end[];
@@ -87,11 +84,6 @@ EXPORT_SYMBOL(profile_pc);
volatile u32 __iomem *master_l10_counter;
-int update_persistent_clock(struct timespec now)
-{
- return set_rtc_mmss(now.tv_sec);
-}
-
irqreturn_t notrace timer_interrupt(int dummy, void *dev_id)
{
if (timer_cs_enabled) {
@@ -362,16 +354,3 @@ void __init time_init(void)
sbus_time_init();
}
-
-static int set_rtc_mmss(unsigned long secs)
-{
- struct rtc_device *rtc = rtc_class_open("rtc0");
- int err = -1;
-
- if (rtc) {
- err = rtc_set_mmss(rtc, secs);
- rtc_class_close(rtc);
- }
-
- return err;
-}
diff --git a/arch/sparc/kernel/time_64.c b/arch/sparc/kernel/time_64.c
index edbbeb157d46..2e6035c0a8ca 100644
--- a/arch/sparc/kernel/time_64.c
+++ b/arch/sparc/kernel/time_64.c
@@ -28,7 +28,6 @@
#include <linux/cpufreq.h>
#include <linux/percpu.h>
#include <linux/miscdevice.h>
-#include <linux/rtc.h>
#include <linux/rtc/m48t59.h>
#include <linux/kernel_stat.h>
#include <linux/clockchips.h>
@@ -394,19 +393,6 @@ static struct sparc64_tick_ops hbtick_operations __read_mostly = {
static unsigned long timer_ticks_per_nsec_quotient __read_mostly;
-int update_persistent_clock(struct timespec now)
-{
- struct rtc_device *rtc = rtc_class_open("rtc0");
- int err = -1;
-
- if (rtc) {
- err = rtc_set_mmss(rtc, now.tv_sec);
- rtc_class_close(rtc);
- }
-
- return err;
-}
-
unsigned long cmos_regs;
EXPORT_SYMBOL(cmos_regs);
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index e9268ea1a68d..dbabe5713a15 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -413,8 +413,9 @@ good_area:
* that here.
*/
if ((fault_code & FAULT_CODE_ITLB) && !(vma->vm_flags & VM_EXEC)) {
- BUG_ON(address != regs->tpc);
- BUG_ON(regs->tstate & TSTATE_PRIV);
+ WARN(address != regs->tpc,
+ "address (%lx) != regs->tpc (%lx)\n", address, regs->tpc);
+ WARN_ON(regs->tstate & TSTATE_PRIV);
goto bad_area;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-29 01:51:34 +0300