Author: mav
Date: Sun Nov 29 00:57:19 2020
New Revision: 368136
URL: https://svnweb.freebsd.org/changeset/base/368136
Log:
Remove aligment requirements for passthrough buffer.
After r368124 vmapbuf() should happily map misaligned maxphys-sized buffers
thanks to extra page added to pbuf_zone.
Modified:
head/sys/dev/nvme/nvme_ctrlr.c
Modified: head/sys/dev/nvme/nvme_ctrlr.c
==============================================================================
--- head/sys/dev/nvme/nvme_ctrlr.c Sun Nov 29 00:54:13 2020
(r368135)
+++ head/sys/dev/nvme/nvme_ctrlr.c Sun Nov 29 00:57:19 2020
(r368136)
@@ -1244,20 +1244,8 @@ nvme_ctrlr_passthrough_cmd(struct nvme_controller *ctr
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,
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