lkml.org 
[lkml]   [2017]   [May]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: [PATCH] nvme: Change our APST table to be no more aggressive than Intel RSTe
On Thu, May 18, 2017 at 11:35:05PM -0700, Christoph Hellwig wrote:
> On Thu, May 18, 2017 at 06:13:55PM -0700, Andy Lutomirski wrote:
> > a) Leave the Dell quirk in place until someone from Dell or Samsung
> > figures out what's actually going on. Add a blanket quirk turning off
> > the deepest sleep state on all Intel devices [1] at least until
> > someone from Intel figures out what's going on -- Hi, Keith! Deal
> > with any other problems as they're reported.
>
> I think we should just blacklist the 60p entirely. It also seems to
> corrupt data 100% reliable when used with XFS.

I assume you're talking about the 600p/p3100. That family of devices
prefer 4k alignment, and patch below will enforce that, fixing all
access issues. I wasn't planning to post it because my understanding is
an imminent f/w update will make it unnecessary.

I understand there is a different issue specific to the KBL NUC platforms
that exposes some other errata, but I don't know much about that.

For all issues, though, a f/w update fixing them is undergoing validation,
but I don't have insider information on the release date.

---
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index c5e709d..49d8070 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -964,7 +964,11 @@ static void __nvme_revalidate_disk(struct gendisk
*disk, struct nvme_id_ns *id)
blk_integrity_unregister(disk);

ns->pi_type = pi_type;
- blk_queue_logical_block_size(ns->queue, bs);
+
+ if (ns->ctrl->quirks & NVME_QUIRK_PAGE_ALIGN)
+ blk_queue_logical_block_size(ns->queue, ns->ctrl->page_size);
+ else
+ blk_queue_logical_block_size(ns->queue, bs);

if (ns->ms && !blk_get_integrity(disk) && !ns->ext)
nvme_init_integrity(ns);
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index fda6ebb..4b6e21f 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -83,6 +83,11 @@ enum nvme_quirks {
* APST should not be used.
*/
NVME_QUIRK_NO_APST = (1 << 4),
+
+ /*
+ * Require 4k aligned IO despite smaller LBA size
+ */
+ NVME_QUIRK_PAGE_ALIGN = (1 << 5),
};

/*
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 6a2f0d3..e08d1f7 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2144,6 +2144,8 @@ static const struct pci_device_id nvme_id_table[] = {
{ PCI_VDEVICE(INTEL, 0x0a54),
.driver_data = NVME_QUIRK_STRIPE_SIZE |
NVME_QUIRK_DISCARD_ZEROES, },
+ { PCI_VDEVICE(INTEL, 0xf1a5),
+ .driver_data = NVME_QUIRK_PAGE_ALIGN },
{ PCI_VDEVICE(INTEL, 0x5845), /* Qemu emulated controller */
.driver_data = NVME_QUIRK_IDENTIFY_CNS, },
{ PCI_DEVICE(0x1c58, 0x0003), /* HGST adapter */
--
\
 
 \ /
  Last update: 2017-05-19 16:12    [W:0.275 / U:2.756 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site