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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

Browse Source 
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Fix clock event multiplier printf format.
  sparc64: Use clock{source,events}_calc_mult_shift().
  sparc64: Use free_bootmem_late() in mdesc_lmb_free().
  sparc: Add alignment and emulation fault perf events.
  sparc64: Add syscall tracepoint support.
  sparc: Stop trying to be so fancy and use __builtin_{memcpy,memset}()
  sparc: Use __builtin_object_size() to validate the buffer size for copy_from_user()
  sparc64: Add some missing __kprobes annotations to kernel fault paths.
  sparc64: Use kprobes_built_in() to avoid ifdefs in fault_64.c
  sparc: Validate that kprobe address is 4-byte aligned.
  sparc64: Don't specify IRQF_SHARED for LDC interrupts.
  sparc64: Fix stack debugging IRQ stack regression.
  sparc64: Fix overly strict range type matching for PCI devices.
This commit is contained in:
Linus Torvalds
2009-12-15 09:00:19 -08:00
parent 48e902f0a3 7466bd3caa
commit 17c330f983
31 changed files with 153 additions and 209 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/sparc/kernel/entry.S
View File

@ -1294,7 +1294,7 @@ linux_sparc_syscall:
sethi %hi(PSR_SYSCALL), %l4
or %l0, %l4, %l0
/* Direct access to user regs, must faster. */
cmp %g1, NR_SYSCALLS
cmp %g1, NR_syscalls
bgeu linux_sparc_ni_syscall
sll %g1, 2, %l4
ld [%l7 + %l4], %l7

11
arch/sparc/kernel/ftrace.c
View File

@ -4,6 +4,7 @@
#include <linux/percpu.h>
#include <linux/init.h>
#include <linux/list.h>
#include <trace/syscall.h>
#include <asm/ftrace.h>
@ -91,3 +92,13 @@ int __init ftrace_dyn_arch_init(void *data)
}
#endif
#ifdef CONFIG_FTRACE_SYSCALLS
extern unsigned int sys_call_table[];
unsigned long __init arch_syscall_addr(int nr)
{
return (unsigned long)sys_call_table[nr];
}
#endif

3
arch/sparc/kernel/kprobes.c
View File

@ -46,6 +46,9 @@ struct kretprobe_blackpoint kretprobe_blacklist[] = {{NULL, NULL}};
int __kprobes arch_prepare_kprobe(struct kprobe *p)
{
if ((unsigned long) p->addr & 0x3UL)
return -EILSEQ;
p->ainsn.insn[0] = *p->addr;
flushi(&p->ainsn.insn[0]);

4
arch/sparc/kernel/ldc.c
View File

@ -1242,13 +1242,13 @@ int ldc_bind(struct ldc_channel *lp, const char *name)
snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name);
err = request_irq(lp->cfg.rx_irq, ldc_rx,
IRQF_SAMPLE_RANDOM | IRQF_DISABLED | IRQF_SHARED,
IRQF_SAMPLE_RANDOM | IRQF_DISABLED,
lp->rx_irq_name, lp);
if (err)
return err;
err = request_irq(lp->cfg.tx_irq, ldc_tx,
IRQF_SAMPLE_RANDOM | IRQF_DISABLED | IRQF_SHARED,
IRQF_SAMPLE_RANDOM | IRQF_DISABLED,
lp->tx_irq_name, lp);
if (err) {
free_irq(lp->cfg.rx_irq, lp);

21
arch/sparc/kernel/mdesc.c
View File

@ -10,6 +10,7 @@
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/miscdevice.h>
#include <linux/bootmem.h>
#include <asm/cpudata.h>
#include <asm/hypervisor.h>
@ -108,25 +109,15 @@ static struct mdesc_handle * __init mdesc_lmb_alloc(unsigned int mdesc_size)
static void mdesc_lmb_free(struct mdesc_handle *hp)
{
unsigned int alloc_size, handle_size = hp->handle_size;
unsigned long start, end;
unsigned int alloc_size;
unsigned long start;
BUG_ON(atomic_read(&hp->refcnt) != 0);
BUG_ON(!list_empty(&hp->list));
alloc_size = PAGE_ALIGN(handle_size);
start = (unsigned long) hp;
end = start + alloc_size;
while (start < end) {
struct page *p;
p = virt_to_page(start);
ClearPageReserved(p);
__free_page(p);
start += PAGE_SIZE;
}
alloc_size = PAGE_ALIGN(hp->handle_size);
start = __pa(hp);
free_bootmem_late(start, alloc_size);
}
static struct mdesc_mem_ops lmb_mdesc_ops = {

14
arch/sparc/kernel/of_device_64.c
View File

@ -104,9 +104,19 @@ static int of_bus_pci_map(u32 *addr, const u32 *range,
int i;
/* Check address type match */
if ((addr[0] ^ range[0]) & 0x03000000)
return -EINVAL;
if (!((addr[0] ^ range[0]) & 0x03000000))
goto type_match;
/* Special exception, we can map a 64-bit address into
* a 32-bit range.
*/
if ((addr[0] & 0x03000000) == 0x03000000 &&
(range[0] & 0x03000000) == 0x02000000)
goto type_match;
return -EINVAL;
type_match:
if (of_out_of_range(addr + 1, range + 1, range + na + pna,
na - 1, ns))
return -EINVAL;

10
arch/sparc/kernel/ptrace_64.c
View File

@ -23,6 +23,7 @@
#include <linux/signal.h>
#include <linux/regset.h>
#include <linux/tracehook.h>
#include <trace/syscall.h>
#include <linux/compat.h>
#include <linux/elf.h>
@ -37,6 +38,9 @@
#include <asm/cpudata.h>
#include <asm/cacheflush.h>
#define CREATE_TRACE_POINTS
#include <trace/events/syscalls.h>
#include "entry.h"
/* #define ALLOW_INIT_TRACING */
@ -1059,6 +1063,9 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs)
if (test_thread_flag(TIF_SYSCALL_TRACE))
ret = tracehook_report_syscall_entry(regs);
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_enter(regs, regs->u_regs[UREG_G1]);
if (unlikely(current->audit_context) && !ret)
audit_syscall_entry((test_thread_flag(TIF_32BIT) ?
AUDIT_ARCH_SPARC :
@ -1084,6 +1091,9 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
audit_syscall_exit(result, regs->u_regs[UREG_I0]);
}
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_exit(regs, regs->u_regs[UREG_G1]);
if (test_thread_flag(TIF_SYSCALL_TRACE))
tracehook_report_syscall_exit(regs, 0);
}

14
arch/sparc/kernel/syscalls.S
View File

@ -62,7 +62,7 @@ sys32_rt_sigreturn:
#endif
.align 32
1: ldx [%g6 + TI_FLAGS], %l5
andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0
be,pt %icc, rtrap
nop
call syscall_trace_leave
@ -187,7 +187,7 @@ linux_syscall_trace:
.globl linux_sparc_syscall32
linux_sparc_syscall32:
/* Direct access to user regs, much faster. */
cmp %g1, NR_SYSCALLS ! IEU1 Group
cmp %g1, NR_syscalls ! IEU1 Group
bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
srl %i0, 0, %o0 ! IEU0
sll %g1, 2, %l4 ! IEU0 Group
@ -198,7 +198,7 @@ linux_sparc_syscall32:
srl %i5, 0, %o5 ! IEU1
srl %i2, 0, %o2 ! IEU0 Group
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0
bne,pn %icc, linux_syscall_trace32 ! CTI
mov %i0, %l5 ! IEU1
call %l7 ! CTI Group brk forced
@ -210,7 +210,7 @@ linux_sparc_syscall32:
.globl linux_sparc_syscall
linux_sparc_syscall:
/* Direct access to user regs, much faster. */
cmp %g1, NR_SYSCALLS ! IEU1 Group
cmp %g1, NR_syscalls ! IEU1 Group
bgeu,pn %xcc, linux_sparc_ni_syscall ! CTI
mov %i0, %o0 ! IEU0
sll %g1, 2, %l4 ! IEU0 Group
@ -221,7 +221,7 @@ linux_sparc_syscall:
mov %i3, %o3 ! IEU1
mov %i4, %o4 ! IEU0 Group
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %g0
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0
bne,pn %icc, linux_syscall_trace ! CTI Group
mov %i0, %l5 ! IEU0
2: call %l7 ! CTI Group brk forced
@ -245,7 +245,7 @@ ret_sys_call:
cmp %o0, -ERESTART_RESTARTBLOCK
bgeu,pn %xcc, 1f
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6
80:
/* System call success, clear Carry condition code. */
andn %g3, %g2, %g3
@ -260,7 +260,7 @@ ret_sys_call:
/* System call failure, set Carry condition code.
* Also, get abs(errno) to return to the process.
*/
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT), %l6
andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %l6
sub %g0, %o0, %o0
or %g3, %g2, %g3
stx %o0, [%sp + PTREGS_OFF + PT_V9_I0]

26
arch/sparc/kernel/time_64.c
View File

@ -774,26 +774,9 @@ void __devinit setup_sparc64_timer(void)
static struct clocksource clocksource_tick = {
.rating = 100,
.mask = CLOCKSOURCE_MASK(64),
.shift = 16,
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
static void __init setup_clockevent_multiplier(unsigned long hz)
{
unsigned long mult, shift = 32;
while (1) {
mult = div_sc(hz, NSEC_PER_SEC, shift);
if (mult && (mult >> 32UL) == 0UL)
break;
shift--;
}
sparc64_clockevent.shift = shift;
sparc64_clockevent.mult = mult;
}
static unsigned long tb_ticks_per_usec __read_mostly;
void __delay(unsigned long loops)
@ -828,9 +811,7 @@ void __init time_init(void)
clocksource_hz2mult(freq, SPARC64_NSEC_PER_CYC_SHIFT);
clocksource_tick.name = tick_ops->name;
clocksource_tick.mult =
clocksource_hz2mult(freq,
clocksource_tick.shift);
clocksource_calc_mult_shift(&clocksource_tick, freq, 4);
clocksource_tick.read = clocksource_tick_read;
printk("clocksource: mult[%x] shift[%d]\n",
@ -839,15 +820,14 @@ void __init time_init(void)
clocksource_register(&clocksource_tick);
sparc64_clockevent.name = tick_ops->name;
setup_clockevent_multiplier(freq);
clockevents_calc_mult_shift(&sparc64_clockevent, freq, 4);
sparc64_clockevent.max_delta_ns =
clockevent_delta2ns(0x7fffffffffffffffUL, &sparc64_clockevent);
sparc64_clockevent.min_delta_ns =
clockevent_delta2ns(0xF, &sparc64_clockevent);
printk("clockevent: mult[%ux] shift[%d]\n",
printk("clockevent: mult[%x] shift[%d]\n",
sparc64_clockevent.mult, sparc64_clockevent.shift);
setup_sparc64_timer();

15
arch/sparc/kernel/unaligned_32.c
View File

@ -17,8 +17,7 @@
#include <asm/uaccess.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
/* #define DEBUG_MNA */
#include <linux/perf_event.h>
enum direction {
load, /* ld, ldd, ldh, ldsh */
@ -29,12 +28,6 @@ enum direction {
invalid,
};
#ifdef DEBUG_MNA
static char *dirstrings[] = {
"load", "store", "both", "fpload", "fpstore", "invalid"
};
#endif
static inline enum direction decode_direction(unsigned int insn)
{
unsigned long tmp = (insn >> 21) & 1;
@ -255,10 +248,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
unsigned long addr = compute_effective_address(regs, insn);
int err;
#ifdef DEBUG_MNA
printk("KMNA: pc=%08lx [dir=%s addr=%08lx size=%d] retpc[%08lx]\n",
regs->pc, dirstrings[dir], addr, size, regs->u_regs[UREG_RETPC]);
#endif
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr);
switch (dir) {
case load:
err = do_int_load(fetch_reg_addr(((insn>>25)&0x1f),
@ -350,6 +340,7 @@ asmlinkage void user_unaligned_trap(struct pt_regs *regs, unsigned int insn)
}
addr = compute_effective_address(regs, insn);
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr);
switch(dir) {
case load:
err = do_int_load(fetch_reg_addr(((insn>>25)&0x1f),

23
arch/sparc/kernel/unaligned_64.c
View File

@ -20,10 +20,9 @@
#include <asm/uaccess.h>
#include <linux/smp.h>
#include <linux/bitops.h>
#include <linux/perf_event.h>
#include <asm/fpumacro.h>
/* #define DEBUG_MNA */
enum direction {
load, /* ld, ldd, ldh, ldsh */
store, /* st, std, sth, stsh */
@ -33,12 +32,6 @@ enum direction {
invalid,
};
#ifdef DEBUG_MNA
static char *dirstrings[] = {
"load", "store", "both", "fpload", "fpstore", "invalid"
};
#endif
static inline enum direction decode_direction(unsigned int insn)
{
unsigned long tmp = (insn >> 21) & 1;
@ -327,12 +320,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
addr = compute_effective_address(regs, insn,
((insn >> 25) & 0x1f));
#ifdef DEBUG_MNA
printk("KMNA: pc=%016lx [dir=%s addr=%016lx size=%d] "
"retpc[%016lx]\n",
regs->tpc, dirstrings[dir], addr, size,
regs->u_regs[UREG_RETPC]);
#endif
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, addr);
switch (asi) {
case ASI_NL:
case ASI_AIUPL:
@ -399,6 +387,7 @@ int handle_popc(u32 insn, struct pt_regs *regs)
int ret, i, rd = ((insn >> 25) & 0x1f);
int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
if (insn & 0x2000) {
maybe_flush_windows(0, 0, rd, from_kernel);
value = sign_extend_imm13(insn);
@ -445,6 +434,8 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs)
int asi = decode_asi(insn, regs);
int flag = (freg < 32) ? FPRS_DL : FPRS_DU;
perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
save_and_clear_fpu();
current_thread_info()->xfsr[0] &= ~0x1c000;
if (freg & 3) {
@ -566,6 +557,8 @@ void handle_ld_nf(u32 insn, struct pt_regs *regs)
int from_kernel = (regs->tstate & TSTATE_PRIV) != 0;
unsigned long *reg;
perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
maybe_flush_windows(0, 0, rd, from_kernel);
reg = fetch_reg_addr(rd, regs);
if (from_kernel || rd < 16) {
@ -596,6 +589,7 @@ void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
if (tstate & TSTATE_PRIV)
die_if_kernel("lddfmna from kernel", regs);
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, sfar);
if (test_thread_flag(TIF_32BIT))
pc = (u32)pc;
if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
@ -657,6 +651,7 @@ void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
if (tstate & TSTATE_PRIV)
die_if_kernel("stdfmna from kernel", regs);
perf_sw_event(PERF_COUNT_SW_ALIGNMENT_FAULTS, 1, 0, regs, sfar);
if (test_thread_flag(TIF_32BIT))
pc = (u32)pc;
if (get_user(insn, (u32 __user *) pc) != -EFAULT) {

3
arch/sparc/kernel/visemul.c
View File

@ -5,6 +5,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/thread_info.h>
#include <linux/perf_event.h>
#include <asm/ptrace.h>
#include <asm/pstate.h>
@ -801,6 +802,8 @@ int vis_emul(struct pt_regs *regs, unsigned int insn)
BUG_ON(regs->tstate & TSTATE_PRIV);
perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, 0, regs, 0);
if (test_thread_flag(TIF_32BIT))
pc = (u32)pc;