Commit baadac8b authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: remove quicklists
  x86: ia32 syscall restart fix
  x86: ioremap, remove WARN_ON()
parents 051a82fc 985a34bd
......@@ -66,9 +66,6 @@ config MMU
config ZONE_DMA
def_bool y
config QUICKLIST
def_bool X86_32
config SBUS
bool
......
......@@ -1055,10 +1055,17 @@ static int putreg32(struct task_struct *child, unsigned regno, u32 value)
R32(esi, si);
R32(ebp, bp);
R32(eax, ax);
R32(orig_eax, orig_ax);
R32(eip, ip);
R32(esp, sp);
case offsetof(struct user32, regs.orig_eax):
/*
* Sign-extend the value so that orig_eax = -1
* causes (long)orig_ax < 0 tests to fire correctly.
*/
regs->orig_ax = (long) (s32) value;
break;
case offsetof(struct user32, regs.eflags):
return set_flags(child, value);
......
......@@ -310,6 +310,35 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
return -EFAULT;
}
/*
* Return -1L or the syscall number that @regs is executing.
*/
static long current_syscall(struct pt_regs *regs)
{
/*
* We always sign-extend a -1 value being set here,
* so this is always either -1L or a syscall number.
*/
return regs->orig_ax;
}
/*
* Return a value that is -EFOO if the system call in @regs->orig_ax
* returned an error. This only works for @regs from @current.
*/
static long current_syscall_ret(struct pt_regs *regs)
{
#ifdef CONFIG_IA32_EMULATION
if (test_thread_flag(TIF_IA32))
/*
* Sign-extend the value so (int)-EFOO becomes (long)-EFOO
* and will match correctly in comparisons.
*/
return (int) regs->ax;
#endif
return regs->ax;
}
/*
* OK, we're invoking a handler
*/
......@@ -327,9 +356,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
#endif
/* Are we from a system call? */
if ((long)regs->orig_ax >= 0) {
if (current_syscall(regs) >= 0) {
/* If so, check system call restarting.. */
switch (regs->ax) {
switch (current_syscall_ret(regs)) {
case -ERESTART_RESTARTBLOCK:
case -ERESTARTNOHAND:
regs->ax = -EINTR;
......@@ -426,10 +455,9 @@ static void do_signal(struct pt_regs *regs)
}
/* Did we come from a system call? */
if ((long)regs->orig_ax >= 0) {
if (current_syscall(regs) >= 0) {
/* Restart the system call - no handlers present */
long res = regs->ax;
switch (res) {
switch (current_syscall_ret(regs)) {
case -ERESTARTNOHAND:
case -ERESTARTSYS:
case -ERESTARTNOINTR:
......
......@@ -134,8 +134,6 @@ static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
return NULL;
}
WARN_ON_ONCE(page_is_ram(pfn));
switch (mode) {
case IOR_MODE_UNCACHED:
default:
......
......@@ -342,12 +342,16 @@ static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp)
pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *pgd = quicklist_alloc(0, GFP_KERNEL, pgd_ctor);
pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
mm->pgd = pgd; /* so that alloc_pd can use it */
/* so that alloc_pd can use it */
mm->pgd = pgd;
if (pgd)
pgd_ctor(pgd);
if (pgd && !pgd_prepopulate_pmd(mm, pgd)) {
quicklist_free(0, pgd_dtor, pgd);
pgd_dtor(pgd);
free_page((unsigned long)pgd);
pgd = NULL;
}
......@@ -357,12 +361,8 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
pgd_mop_up_pmds(mm, pgd);
quicklist_free(0, pgd_dtor, pgd);
}
void check_pgt_cache(void)
{
quicklist_trim(0, pgd_dtor, 25, 16);
pgd_dtor(pgd);
free_page((unsigned long)pgd);
}
void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
......
......@@ -26,10 +26,9 @@ struct mm_struct;
struct vm_area_struct;
extern pgd_t swapper_pg_dir[1024];
extern struct kmem_cache *pmd_cache;
void check_pgt_cache(void);
static inline void pgtable_cache_init(void) {}
static inline void pgtable_cache_init(void) { }
static inline void check_pgt_cache(void) { }
void paging_init(void);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment