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

Pull sparc changes from David Miller:
 "Several bug fixes (from Kirill Tkhai, Geery Uytterhoeven, and Alexey
  Dobriyan) and some support for Fujitsu sparc64x chips (from Allen
  Pais)"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Export flush_ptrace_access() (needed by lustre)
  sparc: fix PCI device proc file mmap(2)
  sparc64: Remove RWSEM export leftovers
  sparc64: Fix off by one in trampoline TLB mapping installation loop.
  sparc64: Fix ITLB handler of null page
  esp_scsi: Fix tag state corruption when autosensing.
  sparc64: Fix not SRA'ed %o5 in 32-bit traced syscall
  sparc64: cleanup: Rename ret_from_syscall to ret_from_fork
  sparc32: Fix exit flag passed from traced sys_sigreturn
  sparc64: Fix wrong syscall return value passed to trace_sys_exit()
  support sparc64x chip type in cpumap.c
  cpu hw caps support for sparc64x
This commit is contained in:
Linus Torvalds 2013-09-05 15:28:17 -07:00
parent cc998ff881 dc76f9ca71
commit b14662cae0
13 changed files with 49 additions and 35 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/sparc/include/asm/switch_to_64.h
View File

@ -48,8 +48,8 @@ do { save_and_clear_fpu(); \
"wrpr %%g0, 14, %%pil\n\t" \
"brz,pt %%o7, switch_to_pc\n\t" \
" mov %%g7, %0\n\t" \
"sethi %%hi(ret_from_syscall), %%g1\n\t" \
"jmpl %%g1 + %%lo(ret_from_syscall), %%g0\n\t" \
"sethi %%hi(ret_from_fork), %%g1\n\t" \
"jmpl %%g1 + %%lo(ret_from_fork), %%g0\n\t" \
" nop\n\t" \
".globl switch_to_pc\n\t" \
"switch_to_pc:\n\t" \

1
arch/sparc/kernel/cpumap.c
View File

@ -327,6 +327,7 @@ static int iterate_cpu(struct cpuinfo_tree *t, unsigned int root_index)
case SUN4V_CHIP_NIAGARA3:
case SUN4V_CHIP_NIAGARA4:
case SUN4V_CHIP_NIAGARA5:
case SUN4V_CHIP_SPARC64X:
rover_inc_table = niagara_iterate_method;
break;
default:

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

@ -839,7 +839,7 @@ sys_sigreturn:
nop
call syscall_trace
nop
mov 1, %o1
1:
/* We don't want to muck with user registers like a

4
arch/sparc/kernel/kgdb_64.c
View File

@ -42,7 +42,7 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
{
struct thread_info *t = task_thread_info(p);
extern unsigned int switch_to_pc;
extern unsigned int ret_from_syscall;
extern unsigned int ret_from_fork;
struct reg_window *win;
unsigned long pc, cwp;
int i;
@ -66,7 +66,7 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
gdb_regs[i] = 0;
if (t->new_child)
pc = (unsigned long) &ret_from_syscall;
pc = (unsigned long) &ret_from_fork;
else
pc = (unsigned long) &switch_to_pc;

3
arch/sparc/kernel/ktlb.S
View File

@ -25,11 +25,10 @@ kvmap_itlb:
*/
kvmap_itlb_4v:
kvmap_itlb_nonlinear:
/* Catch kernel NULL pointer calls. */
sethi %hi(PAGE_SIZE), %g5
cmp %g4, %g5
bleu,pn %xcc, kvmap_dtlb_longpath
blu,pn %xcc, kvmap_itlb_longpath
nop
KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_itlb_load)

4
arch/sparc/kernel/ptrace_64.c
View File

@ -14,6 +14,7 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/smp.h>
@ -116,6 +117,7 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
preempt_enable();
}
EXPORT_SYMBOL_GPL(flush_ptrace_access);
static int get_from_target(struct task_struct *target, unsigned long uaddr,
void *kbuf, int len)
@ -1087,7 +1089,7 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
audit_syscall_exit(regs);
if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
trace_sys_exit(regs, regs->u_regs[UREG_G1]);
trace_sys_exit(regs, regs->u_regs[UREG_I0]);
if (test_thread_flag(TIF_SYSCALL_TRACE))
tracehook_report_syscall_exit(regs, 0);

12
arch/sparc/kernel/setup_64.c
View File

@ -499,12 +499,14 @@ static void __init init_sparc64_elf_hwcap(void)
sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
sun4v_chip_type == SUN4V_CHIP_SPARC64X)
cap |= HWCAP_SPARC_BLKINIT;
if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
sun4v_chip_type == SUN4V_CHIP_SPARC64X)
cap |= HWCAP_SPARC_N2;
}
@ -530,13 +532,15 @@ static void __init init_sparc64_elf_hwcap(void)
if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
sun4v_chip_type == SUN4V_CHIP_SPARC64X)
cap |= (AV_SPARC_VIS | AV_SPARC_VIS2 |
AV_SPARC_ASI_BLK_INIT |
AV_SPARC_POPC);
if (sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
sun4v_chip_type == SUN4V_CHIP_NIAGARA5)
sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
sun4v_chip_type == SUN4V_CHIP_SPARC64X)
cap |= (AV_SPARC_VIS3 | AV_SPARC_HPC |
AV_SPARC_FMAF);
}

12
arch/sparc/kernel/syscalls.S
View File

@ -98,8 +98,8 @@ sys_clone:
ba,pt %xcc, sparc_do_fork
add %sp, PTREGS_OFF, %o2
.globl ret_from_syscall
ret_from_syscall:
.globl ret_from_fork
ret_from_fork:
/* Clear current_thread_info()->new_child. */
stb %g0, [%g6 + TI_NEW_CHILD]
call schedule_tail
@ -152,7 +152,7 @@ linux_syscall_trace32:
srl %i4, 0, %o4
srl %i1, 0, %o1
srl %i2, 0, %o2
ba,pt %xcc, 2f
ba,pt %xcc, 5f
srl %i3, 0, %o3
linux_syscall_trace:
@ -182,13 +182,13 @@ linux_sparc_syscall32:
srl %i1, 0, %o1 ! IEU0 Group
ldx [%g6 + TI_FLAGS], %l0 ! Load
srl %i5, 0, %o5 ! IEU1
srl %i3, 0, %o3 ! IEU0
srl %i2, 0, %o2 ! IEU0 Group
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
srl %i3, 0, %o3 ! IEU0
5: call %l7 ! CTI Group brk forced
srl %i5, 0, %o5 ! IEU1
ba,a,pt %xcc, 3f
/* Linux native system calls enter here... */

2
arch/sparc/kernel/trampoline_64.S
View File

@ -129,7 +129,6 @@ startup_continue:
clr %l5
sethi %hi(num_kernel_image_mappings), %l6
lduw [%l6 + %lo(num_kernel_image_mappings)], %l6
add %l6, 1, %l6
mov 15, %l7
BRANCH_IF_ANY_CHEETAH(g1,g5,2f)
@ -222,7 +221,6 @@ niagara_lock_tlb:
clr %l5
sethi %hi(num_kernel_image_mappings), %l6
lduw [%l6 + %lo(num_kernel_image_mappings)], %l6
add %l6, 1, %l6
1:
mov HV_FAST_MMU_MAP_PERM_ADDR, %o5

9
arch/sparc/lib/ksyms.c
View File

@ -98,15 +98,6 @@ EXPORT_SYMBOL(___copy_from_user);
EXPORT_SYMBOL(___copy_in_user);
EXPORT_SYMBOL(__clear_user);
/* RW semaphores */
EXPORT_SYMBOL(__down_read);
EXPORT_SYMBOL(__down_read_trylock);
EXPORT_SYMBOL(__down_write);
EXPORT_SYMBOL(__down_write_trylock);
EXPORT_SYMBOL(__up_read);
EXPORT_SYMBOL(__up_write);
EXPORT_SYMBOL(__downgrade_write);
/* Atomic counter implementation. */
EXPORT_SYMBOL(atomic_add);
EXPORT_SYMBOL(atomic_add_ret);

14
drivers/scsi/esp_scsi.c
View File

@ -530,7 +530,7 @@ static int esp_need_to_nego_sync(struct esp_target_data *tp)
static int esp_alloc_lun_tag(struct esp_cmd_entry *ent,
struct esp_lun_data *lp)
{
if (!ent->tag[0]) {
if (!ent->orig_tag[0]) {
/* Non-tagged, slot already taken? */
if (lp->non_tagged_cmd)
return -EBUSY;
@ -564,9 +564,9 @@ static int esp_alloc_lun_tag(struct esp_cmd_entry *ent,
return -EBUSY;
}
BUG_ON(lp->tagged_cmds[ent->tag[1]]);
BUG_ON(lp->tagged_cmds[ent->orig_tag[1]]);
lp->tagged_cmds[ent->tag[1]] = ent;
lp->tagged_cmds[ent->orig_tag[1]] = ent;
lp->num_tagged++;
return 0;
@ -575,9 +575,9 @@ static int esp_alloc_lun_tag(struct esp_cmd_entry *ent,
static void esp_free_lun_tag(struct esp_cmd_entry *ent,
struct esp_lun_data *lp)
{
if (ent->tag[0]) {
BUG_ON(lp->tagged_cmds[ent->tag[1]] != ent);
lp->tagged_cmds[ent->tag[1]] = NULL;
if (ent->orig_tag[0]) {
BUG_ON(lp->tagged_cmds[ent->orig_tag[1]] != ent);
lp->tagged_cmds[ent->orig_tag[1]] = NULL;
lp->num_tagged--;
} else {
BUG_ON(lp->non_tagged_cmd != ent);
@ -667,6 +667,8 @@ static struct esp_cmd_entry *find_and_prep_issuable_command(struct esp *esp)
ent->tag[0] = 0;
ent->tag[1] = 0;
}
ent->orig_tag[0] = ent->tag[0];
ent->orig_tag[1] = ent->tag[1];
if (esp_alloc_lun_tag(ent, lp) < 0)
continue;

1
drivers/scsi/esp_scsi.h
View File

@ -271,6 +271,7 @@ struct esp_cmd_entry {
#define ESP_CMD_FLAG_AUTOSENSE 0x04 /* Doing automatic REQUEST_SENSE */
u8 tag[2];
u8 orig_tag[2];
u8 status;
u8 message;

16
fs/proc/inode.c
View File

@ -285,6 +285,20 @@ static int proc_reg_mmap(struct file *file, struct vm_area_struct *vma)
return rv;
}
static unsigned long proc_reg_get_unmapped_area(struct file *file, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
{
struct proc_dir_entry *pde = PDE(file_inode(file));
int rv = -EIO;
unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
if (use_pde(pde)) {
get_unmapped_area = pde->proc_fops->get_unmapped_area;
if (get_unmapped_area)
rv = get_unmapped_area(file, orig_addr, len, pgoff, flags);
unuse_pde(pde);
}
return rv;
}
static int proc_reg_open(struct inode *inode, struct file *file)
{
struct proc_dir_entry *pde = PDE(inode);
@ -356,6 +370,7 @@ static const struct file_operations proc_reg_file_ops = {
.compat_ioctl = proc_reg_compat_ioctl,
#endif
.mmap = proc_reg_mmap,
.get_unmapped_area = proc_reg_get_unmapped_area,
.open = proc_reg_open,
.release = proc_reg_release,
};
@ -368,6 +383,7 @@ static const struct file_operations proc_reg_file_ops_no_compat = {
.poll = proc_reg_poll,
.unlocked_ioctl = proc_reg_unlocked_ioctl,
.mmap = proc_reg_mmap,
.get_unmapped_area = proc_reg_get_unmapped_area,
.open = proc_reg_open,
.release = proc_reg_release,
};