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-rw-r--r--arch/s390/lib/delay.c27
-rw-r--r--arch/s390/lib/uaccess_mvcos.c12
-rw-r--r--arch/s390/lib/uaccess_std.c14
3 files changed, 30 insertions, 23 deletions
diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c
index 97c1eca83cc2..752b362bf651 100644
--- a/arch/s390/lib/delay.c
+++ b/arch/s390/lib/delay.c
@@ -25,13 +25,13 @@ void __delay(unsigned long loops)
asm volatile("0: brct %0,0b" : : "d" ((loops/2) + 1));
}
-static void __udelay_disabled(unsigned long usecs)
+static void __udelay_disabled(unsigned long long usecs)
{
unsigned long mask, cr0, cr0_saved;
u64 clock_saved;
clock_saved = local_tick_disable();
- set_clock_comparator(get_clock() + ((u64) usecs << 12));
+ set_clock_comparator(get_clock() + (usecs << 12));
__ctl_store(cr0_saved, 0, 0);
cr0 = (cr0_saved & 0xffff00e0) | 0x00000800;
__ctl_load(cr0 , 0, 0);
@@ -46,20 +46,25 @@ static void __udelay_disabled(unsigned long usecs)
set_clock_comparator(S390_lowcore.clock_comparator);
}
-static void __udelay_enabled(unsigned long usecs)
+static void __udelay_enabled(unsigned long long usecs)
{
unsigned long mask;
- u64 end, time;
+ u64 clock_saved;
+ u64 end;
mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT | PSW_MASK_IO;
- end = get_clock() + ((u64) usecs << 12);
+ end = get_clock() + (usecs << 12);
do {
- time = end < S390_lowcore.clock_comparator ?
- end : S390_lowcore.clock_comparator;
- set_clock_comparator(time);
+ clock_saved = 0;
+ if (end < S390_lowcore.clock_comparator) {
+ clock_saved = local_tick_disable();
+ set_clock_comparator(end);
+ }
trace_hardirqs_on();
__load_psw_mask(mask);
local_irq_disable();
+ if (clock_saved)
+ local_tick_enable(clock_saved);
} while (get_clock() < end);
set_clock_comparator(S390_lowcore.clock_comparator);
}
@@ -67,7 +72,7 @@ static void __udelay_enabled(unsigned long usecs)
/*
* Waits for 'usecs' microseconds using the TOD clock comparator.
*/
-void __udelay(unsigned long usecs)
+void __udelay(unsigned long long usecs)
{
unsigned long flags;
@@ -101,11 +106,11 @@ EXPORT_SYMBOL(__udelay);
* Simple udelay variant. To be used on startup and reboot
* when the interrupt handler isn't working.
*/
-void udelay_simple(unsigned long usecs)
+void udelay_simple(unsigned long long usecs)
{
u64 end;
- end = get_clock() + ((u64) usecs << 12);
+ end = get_clock() + (usecs << 12);
while (get_clock() < end)
cpu_relax();
}
diff --git a/arch/s390/lib/uaccess_mvcos.c b/arch/s390/lib/uaccess_mvcos.c
index 3f15aaf54855..58da3f461214 100644
--- a/arch/s390/lib/uaccess_mvcos.c
+++ b/arch/s390/lib/uaccess_mvcos.c
@@ -36,7 +36,7 @@ static size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
tmp1 = -4096UL;
asm volatile(
"0: .insn ss,0xc80000000000,0(%0,%2),0(%1),0\n"
- " jz 7f\n"
+ "9: jz 7f\n"
"1:"ALR" %0,%3\n"
" "SLR" %1,%3\n"
" "SLR" %2,%3\n"
@@ -47,7 +47,7 @@ static size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
" "CLR" %0,%4\n" /* copy crosses next page boundary? */
" jnh 4f\n"
"3: .insn ss,0xc80000000000,0(%4,%2),0(%1),0\n"
- " "SLR" %0,%4\n"
+ "10:"SLR" %0,%4\n"
" "ALR" %2,%4\n"
"4:"LHI" %4,-1\n"
" "ALR" %4,%0\n" /* copy remaining size, subtract 1 */
@@ -61,7 +61,7 @@ static size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
" j 8f\n"
"7:"SLR" %0,%0\n"
"8: \n"
- EX_TABLE(0b,2b) EX_TABLE(3b,4b)
+ EX_TABLE(0b,2b) EX_TABLE(3b,4b) EX_TABLE(9b,2b) EX_TABLE(10b,4b)
: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
: "d" (reg0) : "cc", "memory");
return size;
@@ -82,7 +82,7 @@ static size_t copy_to_user_mvcos(size_t size, void __user *ptr, const void *x)
tmp1 = -4096UL;
asm volatile(
"0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
- " jz 4f\n"
+ "6: jz 4f\n"
"1:"ALR" %0,%3\n"
" "SLR" %1,%3\n"
" "SLR" %2,%3\n"
@@ -93,11 +93,11 @@ static size_t copy_to_user_mvcos(size_t size, void __user *ptr, const void *x)
" "CLR" %0,%4\n" /* copy crosses next page boundary? */
" jnh 5f\n"
"3: .insn ss,0xc80000000000,0(%4,%1),0(%2),0\n"
- " "SLR" %0,%4\n"
+ "7:"SLR" %0,%4\n"
" j 5f\n"
"4:"SLR" %0,%0\n"
"5: \n"
- EX_TABLE(0b,2b) EX_TABLE(3b,5b)
+ EX_TABLE(0b,2b) EX_TABLE(3b,5b) EX_TABLE(6b,2b) EX_TABLE(7b,5b)
: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
: "d" (reg0) : "cc", "memory");
return size;
diff --git a/arch/s390/lib/uaccess_std.c b/arch/s390/lib/uaccess_std.c
index d2ffbadb51a7..07deaeee14c8 100644
--- a/arch/s390/lib/uaccess_std.c
+++ b/arch/s390/lib/uaccess_std.c
@@ -36,12 +36,12 @@ size_t copy_from_user_std(size_t size, const void __user *ptr, void *x)
tmp1 = -256UL;
asm volatile(
"0: mvcp 0(%0,%2),0(%1),%3\n"
- " jz 8f\n"
+ "10:jz 8f\n"
"1:"ALR" %0,%3\n"
" la %1,256(%1)\n"
" la %2,256(%2)\n"
"2: mvcp 0(%0,%2),0(%1),%3\n"
- " jnz 1b\n"
+ "11:jnz 1b\n"
" j 8f\n"
"3: la %4,255(%1)\n" /* %4 = ptr + 255 */
" "LHI" %3,-4096\n"
@@ -50,7 +50,7 @@ size_t copy_from_user_std(size_t size, const void __user *ptr, void *x)
" "CLR" %0,%4\n" /* copy crosses next page boundary? */
" jnh 5f\n"
"4: mvcp 0(%4,%2),0(%1),%3\n"
- " "SLR" %0,%4\n"
+ "12:"SLR" %0,%4\n"
" "ALR" %2,%4\n"
"5:"LHI" %4,-1\n"
" "ALR" %4,%0\n" /* copy remaining size, subtract 1 */
@@ -65,6 +65,7 @@ size_t copy_from_user_std(size_t size, const void __user *ptr, void *x)
"8:"SLR" %0,%0\n"
"9: \n"
EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,5b)
+ EX_TABLE(10b,3b) EX_TABLE(11b,3b) EX_TABLE(12b,5b)
: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
: : "cc", "memory");
return size;
@@ -85,12 +86,12 @@ size_t copy_to_user_std(size_t size, void __user *ptr, const void *x)
tmp1 = -256UL;
asm volatile(
"0: mvcs 0(%0,%1),0(%2),%3\n"
- " jz 5f\n"
+ "7: jz 5f\n"
"1:"ALR" %0,%3\n"
" la %1,256(%1)\n"
" la %2,256(%2)\n"
"2: mvcs 0(%0,%1),0(%2),%3\n"
- " jnz 1b\n"
+ "8: jnz 1b\n"
" j 5f\n"
"3: la %4,255(%1)\n" /* %4 = ptr + 255 */
" "LHI" %3,-4096\n"
@@ -99,11 +100,12 @@ size_t copy_to_user_std(size_t size, void __user *ptr, const void *x)
" "CLR" %0,%4\n" /* copy crosses next page boundary? */
" jnh 6f\n"
"4: mvcs 0(%4,%1),0(%2),%3\n"
- " "SLR" %0,%4\n"
+ "9:"SLR" %0,%4\n"
" j 6f\n"
"5:"SLR" %0,%0\n"
"6: \n"
EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,6b)
+ EX_TABLE(7b,3b) EX_TABLE(8b,3b) EX_TABLE(9b,6b)
: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
: : "cc", "memory");
return size;
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