From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Message-ID: <17549.10162.616962.755474@cargo.ozlabs.ibm.com> Date: Mon, 12 Jun 2006 18:37:06 +1000 From: Paul Mackerras To: linuxppc-dev@ozlabs.org Subject: [PATCH] Remove unused paca->pgdir field List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , The pgdir field in the paca was a leftover from the dynamic VSIDs patch, and is not used in the current kernel code. This removes it. Signed-off-by: Paul Mackerras --- diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 8f85c5e..aa0486d 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -122,9 +122,6 @@ #ifdef CONFIG_PPC64 DEFINE(PACASLBCACHE, offsetof(struct paca_struct, slb_cache)); DEFINE(PACASLBCACHEPTR, offsetof(struct paca_struct, slb_cache_ptr)); DEFINE(PACACONTEXTID, offsetof(struct paca_struct, context.id)); -#ifdef CONFIG_PPC_64K_PAGES - DEFINE(PACAPGDIR, offsetof(struct paca_struct, pgdir)); -#endif #ifdef CONFIG_HUGETLB_PAGE DEFINE(PACALOWHTLBAREAS, offsetof(struct paca_struct, context.low_htlb_areas)); DEFINE(PACAHIGHHTLBAREAS, offsetof(struct paca_struct, context.high_htlb_areas)); diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index ffc8ed4..2cc6173 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -122,9 +122,6 @@ void switch_slb(struct task_struct *tsk, get_paca()->slb_cache_ptr = 0; get_paca()->context = mm->context; -#ifdef CONFIG_PPC_64K_PAGES - get_paca()->pgdir = mm->pgd; -#endif /* CONFIG_PPC_64K_PAGES */ /* * preload some userspace segments into the SLB. diff --git a/arch/powerpc/mm/stab.c b/arch/powerpc/mm/stab.c index 4a9291d..691320c 100644 --- a/arch/powerpc/mm/stab.c +++ b/arch/powerpc/mm/stab.c @@ -200,10 +200,6 @@ void switch_stab(struct task_struct *tsk __get_cpu_var(stab_cache_ptr) = 0; -#ifdef CONFIG_PPC_64K_PAGES - get_paca()->pgdir = mm->pgd; -#endif /* CONFIG_PPC_64K_PAGES */ - /* Now preload some entries for the new task */ if (test_tsk_thread_flag(tsk, TIF_32BIT)) unmapped_base = TASK_UNMAPPED_BASE_USER32; diff --git a/include/asm-powerpc/mmu_context.h b/include/asm-powerpc/mmu_context.h index 1b8a25f..8c6b1a6 100644 --- a/include/asm-powerpc/mmu_context.h +++ b/include/asm-powerpc/mmu_context.h @@ -20,16 +20,9 @@ #include * 2 of the License, or (at your option) any later version. */ -/* - * Getting into a kernel thread, there is no valid user segment, mark - * paca->pgdir NULL so that SLB miss on user addresses will fault - */ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) { -#ifdef CONFIG_PPC_64K_PAGES - get_paca()->pgdir = NULL; -#endif /* CONFIG_PPC_64K_PAGES */ } #define NO_CONTEXT 0 @@ -52,13 +45,8 @@ static inline void switch_mm(struct mm_s cpu_set(smp_processor_id(), next->cpu_vm_mask); /* No need to flush userspace segments if the mm doesnt change */ -#ifdef CONFIG_PPC_64K_PAGES - if (prev == next && get_paca()->pgdir == next->pgd) - return; -#else if (prev == next) return; -#endif /* CONFIG_PPC_64K_PAGES */ #ifdef CONFIG_ALTIVEC if (cpu_has_feature(CPU_FTR_ALTIVEC)) diff --git a/include/asm-powerpc/paca.h b/include/asm-powerpc/paca.h index 706325f..c17fd54 100644 --- a/include/asm-powerpc/paca.h +++ b/include/asm-powerpc/paca.h @@ -79,9 +79,6 @@ #endif /* CONFIG_PPC_ISERIES */ u64 exmc[10]; /* used for machine checks */ u64 exslb[10]; /* used for SLB/segment table misses * on the linear mapping */ -#ifdef CONFIG_PPC_64K_PAGES - pgd_t *pgdir; -#endif /* CONFIG_PPC_64K_PAGES */ mm_context_t context; u16 slb_cache[SLB_CACHE_ENTRIES];