diff options
Diffstat (limited to 'include/asm-ppc64')
| -rw-r--r-- | include/asm-ppc64/a.out.h | 2 | ||||
| -rw-r--r-- | include/asm-ppc64/bug.h | 7 | ||||
| -rw-r--r-- | include/asm-ppc64/elf.h | 8 | ||||
| -rw-r--r-- | include/asm-ppc64/page.h | 15 | ||||
| -rw-r--r-- | include/asm-ppc64/pgalloc.h | 2 | ||||
| -rw-r--r-- | include/asm-ppc64/pgtable.h | 41 | ||||
| -rw-r--r-- | include/asm-ppc64/signal.h | 13 | ||||
| -rw-r--r-- | include/asm-ppc64/spinlock.h | 8 |
8 files changed, 51 insertions, 45 deletions
diff --git a/include/asm-ppc64/a.out.h b/include/asm-ppc64/a.out.h index 802338efcb19..3871e252a6f1 100644 --- a/include/asm-ppc64/a.out.h +++ b/include/asm-ppc64/a.out.h @@ -1,8 +1,6 @@ #ifndef __PPC64_A_OUT_H__ #define __PPC64_A_OUT_H__ -#include <asm/ppcdebug.h> - /* * c 2001 PPC 64 Team, IBM Corp * diff --git a/include/asm-ppc64/bug.h b/include/asm-ppc64/bug.h index db31dd22233c..169868fa307d 100644 --- a/include/asm-ppc64/bug.h +++ b/include/asm-ppc64/bug.h @@ -26,6 +26,8 @@ struct bug_entry *find_bug(unsigned long bugaddr); */ #define BUG_WARNING_TRAP 0x1000000 +#ifdef CONFIG_BUG + #define BUG() do { \ __asm__ __volatile__( \ "1: twi 31,0,0\n" \ @@ -55,11 +57,12 @@ struct bug_entry *find_bug(unsigned long bugaddr); "i" (__FILE__), "i" (__FUNCTION__)); \ } while (0) -#endif - #define HAVE_ARCH_BUG #define HAVE_ARCH_BUG_ON #define HAVE_ARCH_WARN_ON +#endif +#endif + #include <asm-generic/bug.h> #endif diff --git a/include/asm-ppc64/elf.h b/include/asm-ppc64/elf.h index 8457d90244fb..6c42d61bedd1 100644 --- a/include/asm-ppc64/elf.h +++ b/include/asm-ppc64/elf.h @@ -229,9 +229,13 @@ do { \ /* * An executable for which elf_read_implies_exec() returns TRUE will - * have the READ_IMPLIES_EXEC personality flag set automatically. + * have the READ_IMPLIES_EXEC personality flag set automatically. This + * is only required to work around bugs in old 32bit toolchains. Since + * the 64bit ABI has never had these issues dont enable the workaround + * even if we have an executable stack. */ -#define elf_read_implies_exec(ex, exec_stk) (exec_stk != EXSTACK_DISABLE_X) +#define elf_read_implies_exec(ex, exec_stk) (test_thread_flag(TIF_32BIT) ? \ + (exec_stk != EXSTACK_DISABLE_X) : 0) #endif diff --git a/include/asm-ppc64/page.h b/include/asm-ppc64/page.h index 20e0f19324e8..86219574c1a5 100644 --- a/include/asm-ppc64/page.h +++ b/include/asm-ppc64/page.h @@ -252,10 +252,19 @@ extern u64 ppc64_pft_size; /* Log 2 of page table size */ /* * This is the default if a program doesn't have a PT_GNU_STACK - * program header entry. + * program header entry. The PPC64 ELF ABI has a non executable stack + * stack by default, so in the absense of a PT_GNU_STACK program header + * we turn execute permission off. */ -#define VM_STACK_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) +#define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#define VM_STACK_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#define VM_STACK_DEFAULT_FLAGS \ + (test_thread_flag(TIF_32BIT) ? \ + VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64) #endif /* __KERNEL__ */ #endif /* _PPC64_PAGE_H */ diff --git a/include/asm-ppc64/pgalloc.h b/include/asm-ppc64/pgalloc.h index 16232d740173..4fc4b739b380 100644 --- a/include/asm-ppc64/pgalloc.h +++ b/include/asm-ppc64/pgalloc.h @@ -27,7 +27,7 @@ pgd_free(pgd_t *pgd) kmem_cache_free(zero_cache, pgd); } -#define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD) +#define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD) static inline pmd_t * pmd_alloc_one(struct mm_struct *mm, unsigned long addr) diff --git a/include/asm-ppc64/pgtable.h b/include/asm-ppc64/pgtable.h index a26120517c54..b984e2747e0c 100644 --- a/include/asm-ppc64/pgtable.h +++ b/include/asm-ppc64/pgtable.h @@ -1,8 +1,6 @@ #ifndef _PPC64_PGTABLE_H #define _PPC64_PGTABLE_H -#include <asm-generic/4level-fixup.h> - /* * This file contains the functions and defines necessary to modify and use * the ppc64 hashed page table. @@ -17,6 +15,8 @@ #include <asm/tlbflush.h> #endif /* __ASSEMBLY__ */ +#include <asm-generic/pgtable-nopud.h> + /* PMD_SHIFT determines what a second-level page table entry can map */ #define PMD_SHIFT (PAGE_SHIFT + PAGE_SHIFT - 3) #define PMD_SIZE (1UL << PMD_SHIFT) @@ -228,12 +228,13 @@ void hugetlb_mm_free_pgd(struct mm_struct *mm); #define pmd_page_kernel(pmd) \ (__bpn_to_ba(pmd_val(pmd) >> PMD_TO_PTEPAGE_SHIFT)) #define pmd_page(pmd) virt_to_page(pmd_page_kernel(pmd)) -#define pgd_set(pgdp, pmdp) (pgd_val(*(pgdp)) = (__ba_to_bpn(pmdp))) -#define pgd_none(pgd) (!pgd_val(pgd)) -#define pgd_bad(pgd) ((pgd_val(pgd)) == 0) -#define pgd_present(pgd) (pgd_val(pgd) != 0UL) -#define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0UL) -#define pgd_page(pgd) (__bpn_to_ba(pgd_val(pgd))) + +#define pud_set(pudp, pmdp) (pud_val(*(pudp)) = (__ba_to_bpn(pmdp))) +#define pud_none(pud) (!pud_val(pud)) +#define pud_bad(pud) ((pud_val(pud)) == 0UL) +#define pud_present(pud) (pud_val(pud) != 0UL) +#define pud_clear(pudp) (pud_val(*(pudp)) = 0UL) +#define pud_page(pud) (__bpn_to_ba(pud_val(pud))) /* * Find an entry in a page-table-directory. We combine the address region @@ -245,12 +246,13 @@ void hugetlb_mm_free_pgd(struct mm_struct *mm); #define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) /* Find an entry in the second-level page table.. */ -#define pmd_offset(dir,addr) \ - ((pmd_t *) pgd_page(*(dir)) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))) +#define pmd_offset(pudp,addr) \ + ((pmd_t *) pud_page(*(pudp)) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))) /* Find an entry in the third-level page table.. */ #define pte_offset_kernel(dir,addr) \ - ((pte_t *) pmd_page_kernel(*(dir)) + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))) + ((pte_t *) pmd_page_kernel(*(dir)) \ + + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))) #define pte_offset_map(dir,addr) pte_offset_kernel((dir), (addr)) #define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir), (addr)) @@ -582,19 +584,22 @@ extern long native_hpte_insert(unsigned long hpte_group, unsigned long va, static inline pte_t *find_linux_pte(pgd_t *pgdir, unsigned long ea) { pgd_t *pg; + pud_t *pu; pmd_t *pm; pte_t *pt = NULL; pte_t pte; pg = pgdir + pgd_index(ea); if (!pgd_none(*pg)) { - - pm = pmd_offset(pg, ea); - if (pmd_present(*pm)) { - pt = pte_offset_kernel(pm, ea); - pte = *pt; - if (!pte_present(pte)) - pt = NULL; + pu = pud_offset(pg, ea); + if (!pud_none(*pu)) { + pm = pmd_offset(pu, ea); + if (pmd_present(*pm)) { + pt = pte_offset_kernel(pm, ea); + pte = *pt; + if (!pte_present(pte)) + pt = NULL; + } } } diff --git a/include/asm-ppc64/signal.h b/include/asm-ppc64/signal.h index fe5401adb41b..a2d7bbb4befd 100644 --- a/include/asm-ppc64/signal.h +++ b/include/asm-ppc64/signal.h @@ -96,19 +96,6 @@ typedef struct { #define MINSIGSTKSZ 2048 #define SIGSTKSZ 8192 -#ifdef __KERNEL__ - -/* - * These values of sa_flags are used only by the kernel as part of the - * irq handling routines. - * - * SA_INTERRUPT is also used by the irq handling routines. - * SA_SHIRQ is for shared interrupt support on PCI and EISA. - */ -#define SA_PROBE SA_ONESHOT -#define SA_SAMPLE_RANDOM SA_RESTART -#define SA_SHIRQ 0x04000000 -#endif #define SIG_BLOCK 0 /* for blocking signals */ #define SIG_UNBLOCK 1 /* for unblocking signals */ diff --git a/include/asm-ppc64/spinlock.h b/include/asm-ppc64/spinlock.h index a9b2a1162cf7..acd11564dd75 100644 --- a/include/asm-ppc64/spinlock.h +++ b/include/asm-ppc64/spinlock.h @@ -110,7 +110,7 @@ static void __inline__ _raw_spin_lock(spinlock_t *lock) HMT_low(); if (SHARED_PROCESSOR) __spin_yield(lock); - } while (likely(lock->lock != 0)); + } while (unlikely(lock->lock != 0)); HMT_medium(); } } @@ -128,7 +128,7 @@ static void __inline__ _raw_spin_lock_flags(spinlock_t *lock, unsigned long flag HMT_low(); if (SHARED_PROCESSOR) __spin_yield(lock); - } while (likely(lock->lock != 0)); + } while (unlikely(lock->lock != 0)); HMT_medium(); local_irq_restore(flags_dis); } @@ -194,7 +194,7 @@ static void __inline__ _raw_read_lock(rwlock_t *rw) HMT_low(); if (SHARED_PROCESSOR) __rw_yield(rw); - } while (likely(rw->lock < 0)); + } while (unlikely(rw->lock < 0)); HMT_medium(); } } @@ -251,7 +251,7 @@ static void __inline__ _raw_write_lock(rwlock_t *rw) HMT_low(); if (SHARED_PROCESSOR) __rw_yield(rw); - } while (likely(rw->lock != 0)); + } while (unlikely(rw->lock != 0)); HMT_medium(); } } |