Author: jhibbits
Date: Sat Nov 21 06:03:46 2015
New Revision: 291122
URL: https://svnweb.freebsd.org/changeset/base/291122
Log:
trunc_page() goes through unsigned long, which is too short.
sizeof(unsigned long) < sizeof(vm_paddr_t) on Book-E, which uses 36-bit
addressing. With this, a CCSR with a physical address above 4GB successfully
maps.
Sponsored by: Alex Perez/Inertial Computing
Modified:
head/sys/powerpc/booke/pmap.c
Modified: head/sys/powerpc/booke/pmap.c
==============================================================================
--- head/sys/powerpc/booke/pmap.c Sat Nov 21 02:49:33 2015
(r291121)
+++ head/sys/powerpc/booke/pmap.c Sat Nov 21 06:03:46 2015
(r291122)
@@ -3298,7 +3298,7 @@ pmap_early_io_map(vm_paddr_t pa, vm_size
return (tlb1[i].virt + (pa - tlb1[i].phys));
}
- pa_base = trunc_page(pa);
+ pa_base = rounddown(pa, PAGE_SIZE);
size = roundup(size + (pa - pa_base), PAGE_SIZE);
tlb1_map_base = roundup2(tlb1_map_base, 1 << (ilog2(size) & ~1));
va = tlb1_map_base + (pa - pa_base);
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