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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-03 12:52:04 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-03 12:52:04 -0400
commit3ba113d14cedcd88105a3b9c90f8ecce829e1095 (patch)
tree357f50c6a45bf57a16d46b3157dfcd4e28233079 /arch/parisc/kernel/process.c
parentbad6a5c08c119572c888d5df2bd7691a4da6b9e8 (diff)
parentb609308e1415efebdf79ebd553f4dd47b0ff2722 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6: (23 commits) parisc: move dereference_function_descriptor to process.c parisc: Move kernel Elf_Fdesc define to <asm/elf.h> parisc: fix build when ARCH_HAS_KMAP parisc: fix "make tar-pkg" parisc: drivers: fix warnings parisc: select BUG always parisc: asm/pdc.h should include asm/page.h parisc: led: remove proc_dir_entry::owner parisc: fix macro expansion in atomic.h parisc: iosapic: fix build breakage parisc: oops_enter()/oops_exit() in die() parisc: document light weight syscall ABI parisc: blink all or loadavg LEDs on oops parisc: add ftrace (function and graph tracer) functionality parisc: simplify sys_clone() parisc: add LATENCYTOP_SUPPORT and CONFIG_STACKTRACE_SUPPORT parisc: allow to build with 16k default kernel page size parisc: expose 32/64-bit capabilities in cpuinfo parisc: use constants instead of numbers in assembly parisc: fix usage of 32bit PTE page table entries on 32bit kernels ...
Diffstat (limited to 'arch/parisc/kernel/process.c')
-rw-r--r--arch/parisc/kernel/process.c29
1 files changed, 16 insertions, 13 deletions
diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c
index 8aa591ed9127..6f69101f90bb 100644
--- a/arch/parisc/kernel/process.c
+++ b/arch/parisc/kernel/process.c
@@ -46,14 +46,15 @@
46#include <linux/stddef.h> 46#include <linux/stddef.h>
47#include <linux/unistd.h> 47#include <linux/unistd.h>
48#include <linux/kallsyms.h> 48#include <linux/kallsyms.h>
49#include <linux/uaccess.h>
49 50
50#include <asm/io.h> 51#include <asm/io.h>
51#include <asm/asm-offsets.h> 52#include <asm/asm-offsets.h>
52#include <asm/pdc.h> 53#include <asm/pdc.h>
53#include <asm/pdc_chassis.h> 54#include <asm/pdc_chassis.h>
54#include <asm/pgalloc.h> 55#include <asm/pgalloc.h>
55#include <asm/uaccess.h>
56#include <asm/unwind.h> 56#include <asm/unwind.h>
57#include <asm/sections.h>
57 58
58/* 59/*
59 * The idle thread. There's no useful work to be 60 * The idle thread. There's no useful work to be
@@ -231,8 +232,8 @@ sys_clone(unsigned long clone_flags, unsigned long usp,
231 232
232 However, these last 3 args are only examined 233 However, these last 3 args are only examined
233 if the proper flags are set. */ 234 if the proper flags are set. */
234 int __user *child_tidptr; 235 int __user *parent_tidptr = (int __user *)regs->gr[24];
235 int __user *parent_tidptr; 236 int __user *child_tidptr = (int __user *)regs->gr[22];
236 237
237 /* usp must be word aligned. This also prevents users from 238 /* usp must be word aligned. This also prevents users from
238 * passing in the value 1 (which is the signal for a special 239 * passing in the value 1 (which is the signal for a special
@@ -243,16 +244,6 @@ sys_clone(unsigned long clone_flags, unsigned long usp,
243 if (usp == 0) 244 if (usp == 0)
244 usp = regs->gr[30]; 245 usp = regs->gr[30];
245 246
246 if (clone_flags & CLONE_PARENT_SETTID)
247 parent_tidptr = (int __user *)regs->gr[24];
248 else
249 parent_tidptr = NULL;
250
251 if (clone_flags & (CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID))
252 child_tidptr = (int __user *)regs->gr[22];
253 else
254 child_tidptr = NULL;
255
256 return do_fork(clone_flags, usp, regs, 0, parent_tidptr, child_tidptr); 247 return do_fork(clone_flags, usp, regs, 0, parent_tidptr, child_tidptr);
257} 248}
258 249
@@ -400,3 +391,15 @@ get_wchan(struct task_struct *p)
400 } while (count++ < 16); 391 } while (count++ < 16);
401 return 0; 392 return 0;
402} 393}
394
395#ifdef CONFIG_64BIT
396void *dereference_function_descriptor(void *ptr)
397{
398 Elf64_Fdesc *desc = ptr;
399 void *p;
400
401 if (!probe_kernel_address(&desc->addr, p))
402 ptr = p;
403 return ptr;
404}
405#endif