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Remove aligment requirements for passthrough buffer.

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After r368124 vmapbuf() should happily map misaligned maxphys-sized buffers
thanks to extra page added to pbuf_zone.
This commit is contained in:
Alexander Motin 2020-11-29 00:57:19 +00:00
parent 9093e27cc1
commit 1770bae5f8
1 changed files with 0 additions and 12 deletions
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12
sys/dev/nvme/nvme_ctrlr.c
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@ -1244,20 +1244,8 @@ nvme_ctrlr_passthrough_cmd(struct nvme_controller *ctrlr,
struct mtx *mtx;
struct buf *buf = NULL;
int ret = 0;
vm_offset_t addr, end;
if (pt->len > 0) {
/*
* vmapbuf calls vm_fault_quick_hold_pages which only maps full
* pages. Ensure this request has fewer than maxphys bytes when
* extended to full pages.
*/
addr = (vm_offset_t)pt->buf;
end = round_page(addr + pt->len);
addr = trunc_page(addr);
if (end - addr > maxphys)
return EIO;
if (pt->len > ctrlr->max_xfer_size) {
nvme_printf(ctrlr, "pt->len (%d) "
"exceeds max_xfer_size (%d)\n", pt->len,