Hi folks,
I introduced a fairly nasty bug into the recently merged Radix series.
It means a kernel built with RADIX=n crashes on boot on Hash MMU machines.
So I'm going to rebase powerpc#next to squash in a fix.
Hope that doesn't screw up anyone's work.
For reference the diff from old to new is below.
cheers
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index d91dc886c90f..e53ebebff474 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -91,11 +91,7 @@
/*
* Radix page table available
*/
-#ifdef CONFIG_PPC_RADIX_MMU
-#define MMU_FTR_RADIX ASM_CONST(0x80000000)
-#else
-#define MMU_FTR_RADIX ASM_CONST(0)
-#endif
+#define MMU_FTR_RADIX ASM_CONST(0x80000000)
/* MMU feature bit sets for various CPUs */
#define MMU_FTRS_DEFAULT_HPTE_ARCH_V2 \
@@ -119,9 +115,25 @@
DECLARE_PER_CPU(int, next_tlbcam_idx);
#endif
+enum {
+ MMU_FTRS_POSSIBLE = MMU_FTR_HPTE_TABLE | MMU_FTR_TYPE_8xx |
+ MMU_FTR_TYPE_40x | MMU_FTR_TYPE_44x | MMU_FTR_TYPE_FSL_E |
+ MMU_FTR_TYPE_47x | MMU_FTR_USE_HIGH_BATS | MMU_FTR_BIG_PHYS |
+ MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_USE_TLBILX |
+ MMU_FTR_LOCK_BCAST_INVAL | MMU_FTR_NEED_DTLB_SW_LRU |
+ MMU_FTR_USE_TLBRSRV | MMU_FTR_USE_PAIRED_MAS |
+ MMU_FTR_NO_SLBIE_B | MMU_FTR_16M_PAGE | MMU_FTR_TLBIEL |
+ MMU_FTR_LOCKLESS_TLBIE | MMU_FTR_CI_LARGE_PAGE |
+ MMU_FTR_1T_SEGMENT |
+#ifdef CONFIG_PPC_RADIX_MMU
+ MMU_FTR_RADIX |
+#endif
+ 0,
+};
+
static inline int mmu_has_feature(unsigned long feature)
{
- return (cur_cpu_spec->mmu_features & feature);
+ return (MMU_FTRS_POSSIBLE & cur_cpu_spec->mmu_features & feature);
}
static inline void mmu_clear_feature(unsigned long feature)
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
