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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-12-18 19:13:24 +0000
committerPaul Mackerras <paulus@samba.org>2008-12-21 14:21:15 +1100
commit5e696617c425eb97bd943d781f3941fb1e8f0e5b (patch)
tree82138fbda2e28fbe8d0e5821f218cb160230ce27 /arch/powerpc/platforms
parent6d2170be4561293a6aa821c773687bd3f18e8206 (diff)
powerpc/mm: Split mmu_context handling
This splits the mmu_context handling between 32-bit hash based processors, 64-bit hash based processors and everybody else. This is preliminary work for adding SMP support for BookE processors. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/Kconfig.cputype10
-rw-r--r--arch/powerpc/platforms/powermac/cpufreq_32.c2
2 files changed, 10 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 548efa55c8f..db61dafb924 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -195,13 +195,21 @@ config SPE
config PPC_STD_MMU
bool
- depends on 6xx || POWER3 || POWER4 || PPC64
+ depends on 6xx || PPC64
default y
config PPC_STD_MMU_32
def_bool y
depends on PPC_STD_MMU && PPC32
+config PPC_STD_MMU_64
+ def_bool y
+ depends on PPC_STD_MMU && PPC64
+
+config PPC_MMU_NOHASH
+ def_bool y
+ depends on !PPC_STD_MMU
+
config PPC_MM_SLICES
bool
default y if HUGETLB_PAGE || PPC_64K_PAGES
diff --git a/arch/powerpc/platforms/powermac/cpufreq_32.c b/arch/powerpc/platforms/powermac/cpufreq_32.c
index 792d3ce8112..65c585b8b00 100644
--- a/arch/powerpc/platforms/powermac/cpufreq_32.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_32.c
@@ -310,7 +310,7 @@ static int pmu_set_cpu_speed(int low_speed)
_set_L3CR(save_l3cr);
/* Restore userland MMU context */
- set_context(current->active_mm->context.id, current->active_mm->pgd);
+ switch_mmu_context(NULL, current->active_mm);
#ifdef DEBUG_FREQ
printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1));