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| author | jhibbits <jhibbits@FreeBSD.org> | 2016-02-16 02:13:55 +0000 |
|---|---|---|
| committer | jhibbits <jhibbits@FreeBSD.org> | 2016-02-16 02:13:55 +0000 |
| commit | 60370dfaf5f91c13b3d3acbda0dc9da058779d0e (patch) | |
| tree | f7be3f9a1e080032bb21ce39a9de723598cd83c7 /sys/powerpc | |
| parent | 6943e659c079f7524b7ada835d0dda9991ca4ae1 (diff) | |
| download | FreeBSD-src-60370dfaf5f91c13b3d3acbda0dc9da058779d0e.zip FreeBSD-src-60370dfaf5f91c13b3d3acbda0dc9da058779d0e.tar.gz | |
Fix a panic bug that cropped up in the PTE rewrite.
PTE was getting overwritten by just the flags.
Pointy-hat to: jhibbits
Diffstat (limited to 'sys/powerpc')
| -rw-r--r-- | sys/powerpc/booke/pmap.c | 3 | ||||
| -rw-r--r-- | sys/powerpc/include/pte.h | 1 |
2 files changed, 3 insertions, 1 deletions
diff --git a/sys/powerpc/booke/pmap.c b/sys/powerpc/booke/pmap.c index 86da60a..0b45c87 100644 --- a/sys/powerpc/booke/pmap.c +++ b/sys/powerpc/booke/pmap.c @@ -1759,7 +1759,8 @@ mmu_booke_enter_locked(mmu_t mmu, pmap_t pmap, vm_offset_t va, vm_page_t m, tlb_miss_lock(); tlb0_flush_entry(va); - *pte = flags; + *pte &= ~PTE_FLAGS_MASK; + *pte |= flags; tlb_miss_unlock(); mtx_unlock_spin(&tlbivax_mutex); diff --git a/sys/powerpc/include/pte.h b/sys/powerpc/include/pte.h index 7108072..8cbd70b 100644 --- a/sys/powerpc/include/pte.h +++ b/sys/powerpc/include/pte.h @@ -270,6 +270,7 @@ typedef uint64_t pte_t; /* Macro argument must of pte_t type. */ #define PTE_ARPN_SHIFT 12 +#define PTE_FLAGS_MASK 0x00ffffff #define PTE_RPN_FROM_PA(pa) (((pa) & ~PAGE_MASK) << PTE_ARPN_SHIFT) #define PTE_PA(pte) ((vm_paddr_t)(*pte >> PTE_ARPN_SHIFT) & ~PAGE_MASK) #define PTE_ISVALID(pte) ((*pte) & PTE_VALID) |
