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| author | nwhitehorn <nwhitehorn@FreeBSD.org> | 2012-04-11 20:28:05 +0000 |
|---|---|---|
| committer | nwhitehorn <nwhitehorn@FreeBSD.org> | 2012-04-11 20:28:05 +0000 |
| commit | 31bc0a8bff2a66718684b68012fa4be1ed30f522 (patch) | |
| tree | 6feb2894ba6a46bcd31338c4f03645df9fa26a76 /sys/powerpc/aim | |
| parent | 8c1a6fb8e51814e83ee22f068d3700fbb2af951d (diff) | |
| download | FreeBSD-src-31bc0a8bff2a66718684b68012fa4be1ed30f522.zip FreeBSD-src-31bc0a8bff2a66718684b68012fa4be1ed30f522.tar.gz | |
Fix error in r233949. Synchronizing icaches on uncacheable pages turns out
not to be a good idea, and of course the PV entry list for a page is never
empty after the page has been mapped.
Diffstat (limited to 'sys/powerpc/aim')
| -rw-r--r-- | sys/powerpc/aim/mmu_oea.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/powerpc/aim/mmu_oea.c b/sys/powerpc/aim/mmu_oea.c index 45bf5b3..d7023d9 100644 --- a/sys/powerpc/aim/mmu_oea.c +++ b/sys/powerpc/aim/mmu_oea.c @@ -1137,9 +1137,11 @@ moea_enter_locked(pmap_t pmap, vm_offset_t va, vm_page_t m, vm_prot_t prot, /* * Flush the real page from the instruction cache. This has be done * for all user mappings to prevent information leakage via the - * instruction cache. + * instruction cache. moea_pvo_enter() returns ENOENT for the first + * mapping for a page. */ - if (pmap != kernel_pmap && LIST_EMPTY(vm_page_to_pvoh(m))) + if (pmap != kernel_pmap && error == ENOENT && + (pte_lo & (PTE_I | PTE_G)) == 0) moea_syncicache(VM_PAGE_TO_PHYS(m), PAGE_SIZE); } |
