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| author | Brandon Bergren <bdragon@FreeBSD.org> | 2021-03-29 22:59:19 +0000 |
|---|---|---|
| committer | Brandon Bergren <bdragon@FreeBSD.org> | 2021-03-29 23:22:16 +0000 |
| commit | 5a08df100b58911396e0cc1403f0504bc68461bd (patch) | |
| tree | c1369975e2ba4e1bf73281b77bdd916508101897 /sys/powerpc/booke/pmap_32.c | |
| parent | 9fa8d1582b44b4850d40699c9adb104732328b7d (diff) | |
| download | src-5a08df100b58911396e0cc1403f0504bc68461bd.tar.gz src-5a08df100b58911396e0cc1403f0504bc68461bd.zip | |
Diffstat (limited to 'sys/powerpc/booke/pmap_32.c')
| -rw-r--r-- | sys/powerpc/booke/pmap_32.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/sys/powerpc/booke/pmap_32.c b/sys/powerpc/booke/pmap_32.c index a9f8af0565f0..924eb223a2b6 100644 --- a/sys/powerpc/booke/pmap_32.c +++ b/sys/powerpc/booke/pmap_32.c @@ -748,14 +748,23 @@ mmu_booke_sync_icache(pmap_t pm, vm_offset_t va, vm_size_t sz) sync_sz = min(sync_sz, sz); if (valid) { if (!active) { - /* Create a mapping in the active pmap. */ + /* + * Create a mapping in the active pmap. + * + * XXX: We use the zero page here, because + * it isn't likely to be in use. + * If we ever decide to support + * security.bsd.map_at_zero on Book-E, change + * this to some other address that isn't + * normally mappable. + */ addr = 0; m = PHYS_TO_VM_PAGE(pa); PMAP_LOCK(pmap); pte_enter(pmap, m, addr, PTE_SR | PTE_VALID, FALSE); - addr += (va & PAGE_MASK); - __syncicache((void *)addr, sync_sz); + __syncicache((void *)(addr + (va & PAGE_MASK)), + sync_sz); pte_remove(pmap, addr, PTBL_UNHOLD); PMAP_UNLOCK(pmap); } else |