D34866.diff
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	diff --git a/sys/dev/nvme/nvme_ns.c b/sys/dev/nvme/nvme_ns.c
	--- a/sys/dev/nvme/nvme_ns.c
	+++ b/sys/dev/nvme/nvme_ns.c
	@@ -567,14 +567,16 @@
	}

	/*
	- * Older Intel devices advertise in vendor specific space an alignment
	- * that improves performance. If present use for the stripe size. NVMe
	- * 1.3 standardized this as NOIOB, and newer Intel drives use that.
	+ * Older Intel devices (like the PC35xxx and P45xx series) advertise in
	+ * vendor specific space an alignment that improves performance. If
	+ * present use for the stripe size. NVMe 1.3 standardized this as
	+ * NOIOB, and newer Intel drives use that.
	*/
	if ((ctrlr->quirks & QUIRK_INTEL_ALIGNMENT) != 0) {
	if (ctrlr->cdata.vs[3] != 0)
	ns->boundary =
	- (1 << ctrlr->cdata.vs[3]) * ctrlr->min_page_size;
	+ 1 << (ctrlr->cdata.vs[3] + NVME_MPS_SHIFT +
	+ NVME_CAP_HI_MPSMIN(ctrlr->cap_hi));
	else
	ns->boundary = 0;
	} else {