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MFC r277792:

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Fix bug in mapppings of multiple pages exposed by updates to the VSCSI
support in QEMU. Each page of a many page mapping was getting mapped to
the same physical address, which is not the desired behavior.
This commit is contained in:
nwhitehorn 2015-02-03 00:29:58 +00:00
parent 00fdf5663a
commit f1bce3cd64
1 changed files with 7 additions and 7 deletions
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14
sys/powerpc/pseries/plpar_iommu.c
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@ -191,13 +191,13 @@ phyp_iommu_map(device_t dev, bus_dma_segment_t *segs, int *nsegs,
tce = trunc_page(segs[i].ds_addr);
tce |= 0x3; /* read/write */
if (papr_supports_stuff_tce) {
error = phyp_hcall(H_STUFF_TCE, window->map->iobn,
alloced, tce, allocsize/PAGE_SIZE);
} else {
for (j = 0; j < allocsize; j += PAGE_SIZE)
error = phyp_hcall(H_PUT_TCE, window->map->iobn,
alloced + j, tce + j);
for (j = 0; j < allocsize; j += PAGE_SIZE) {
error = phyp_hcall(H_PUT_TCE, window->map->iobn,
alloced + j, tce + j);
if (error < 0) {
panic("IOMMU mapping error: %d\n", error);
return (ENOMEM);
}
}
segs[i].ds_addr = alloced + (segs[i].ds_addr & PAGE_MASK);