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authorPaul Mackerras <paulus@samba.org>2008-03-26 08:44:18 +1100
committerPaul Mackerras <paulus@samba.org>2008-03-26 08:44:18 +1100
commit54f53f2b94feb72622bec7a8563fc487d9f97720 (patch)
treeab0c4e1dcadd25a00fa7a4febf41bc43b864cf73 /arch/powerpc/mm
parentf61fb8a52cdf8b9b6a6badde84aefe58cb35d315 (diff)
parenta4083c9271e0a697278e089f2c0b9a95363ada0a (diff)
downloadblackbird-op-linux-54f53f2b94feb72622bec7a8563fc487d9f97720.tar.gz
blackbird-op-linux-54f53f2b94feb72622bec7a8563fc487d9f97720.zip
Merge branch 'linux-2.6'
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/hash_utils_64.c11
-rw-r--r--arch/powerpc/mm/slb.c6
2 files changed, 14 insertions, 3 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 0b018b29cda8..c2e5f61788b0 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -370,9 +370,14 @@ static void __init htab_init_page_sizes(void)
mmu_vmalloc_psize = MMU_PAGE_64K;
if (mmu_linear_psize == MMU_PAGE_4K)
mmu_linear_psize = MMU_PAGE_64K;
- if (cpu_has_feature(CPU_FTR_CI_LARGE_PAGE))
- mmu_io_psize = MMU_PAGE_64K;
- else
+ if (cpu_has_feature(CPU_FTR_CI_LARGE_PAGE)) {
+ /*
+ * Don't use 64k pages for ioremap on pSeries, since
+ * that would stop us accessing the HEA ethernet.
+ */
+ if (!machine_is(pseries))
+ mmu_io_psize = MMU_PAGE_64K;
+ } else
mmu_ci_restrictions = 1;
}
#endif /* CONFIG_PPC_64K_PAGES */
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c
index 47b06bad24ad..906daeda59a8 100644
--- a/arch/powerpc/mm/slb.c
+++ b/arch/powerpc/mm/slb.c
@@ -124,6 +124,12 @@ void slb_flush_and_rebolt(void)
ksp_vsid_data = get_slb_shadow()->save_area[2].vsid;
}
+ /*
+ * We can't take a PMU exception in the following code, so hard
+ * disable interrupts.
+ */
+ hard_irq_disable();
+
/* We need to do this all in asm, so we're sure we don't touch
* the stack between the slbia and rebolting it. */
asm volatile("isync\n"
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