summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/include/asm/mmu_context.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-15 09:51:09 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-15 09:51:09 -0700
commit723e9db7a46e328527cc3da2b478b831184fe828 (patch)
treecdeda255633057dcb4c84097bed27b2bbf76970f /arch/powerpc/include/asm/mmu_context.h
parentada3fa15057205b7d3f727bba5cd26b5912e350f (diff)
parentd331d8305cba713605854aab63a000fb892353a7 (diff)
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (134 commits) powerpc/nvram: Enable use Generic NVRAM driver for different size chips powerpc/iseries: Fix oops reading from /proc/iSeries/mf/*/cmdline powerpc/ps3: Workaround for flash memory I/O error powerpc/booke: Don't set DABR on 64-bit BookE, use DAC1 instead powerpc/perf_counters: Reduce stack usage of power_check_constraints powerpc: Fix bug where perf_counters breaks oprofile powerpc/85xx: Fix SMP compile error and allow NULL for smp_ops powerpc/irq: Improve nanodoc powerpc: Fix some late PowerMac G5 with PCIe ATI graphics powerpc/fsl-booke: Use HW PTE format if CONFIG_PTE_64BIT powerpc/book3e: Add missing page sizes powerpc/pseries: Fix to handle slb resize across migration powerpc/powermac: Thermal control turns system off too eagerly powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan() powerpc/405ex: support cuImage via included dtb powerpc/405ex: provide necessary fixup function to support cuImage powerpc/40x: Add support for the ESTeem 195E (PPC405EP) SBC powerpc/44x: Add Eiger AMCC (AppliedMicro) PPC460SX evaluation board support. powerpc/44x: Update Arches defconfig powerpc/44x: Update Arches dts ... Fix up conflicts in drivers/char/agp/uninorth-agp.c
Diffstat (limited to 'arch/powerpc/include/asm/mmu_context.h')
-rw-r--r--arch/powerpc/include/asm/mmu_context.h15
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h
index b7063669f97..b34e94d9443 100644
--- a/arch/powerpc/include/asm/mmu_context.h
+++ b/arch/powerpc/include/asm/mmu_context.h
@@ -14,7 +14,6 @@
/*
* Most if the context management is out of line
*/
-extern void mmu_context_init(void);
extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
extern void destroy_context(struct mm_struct *mm);
@@ -23,6 +22,12 @@ extern void switch_stab(struct task_struct *tsk, struct mm_struct *mm);
extern void switch_slb(struct task_struct *tsk, struct mm_struct *mm);
extern void set_context(unsigned long id, pgd_t *pgd);
+#ifdef CONFIG_PPC_BOOK3S_64
+static inline void mmu_context_init(void) { }
+#else
+extern void mmu_context_init(void);
+#endif
+
/*
* switch_mm is the entry point called from the architecture independent
* code in kernel/sched.c
@@ -38,6 +43,10 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
tsk->thread.pgdir = next->pgd;
#endif /* CONFIG_PPC32 */
+ /* 64-bit Book3E keeps track of current PGD in the PACA */
+#ifdef CONFIG_PPC_BOOK3E_64
+ get_paca()->pgd = next->pgd;
+#endif
/* Nothing else to do if we aren't actually switching */
if (prev == next)
return;
@@ -84,6 +93,10 @@ static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)
static inline void enter_lazy_tlb(struct mm_struct *mm,
struct task_struct *tsk)
{
+ /* 64-bit Book3E keeps track of current PGD in the PACA */
+#ifdef CONFIG_PPC_BOOK3E_64
+ get_paca()->pgd = NULL;
+#endif
}
#endif /* __KERNEL__ */