From: Olaf Hering <olaf@aepfle.de>
To: kys@microsoft.com, haiyangz@microsoft.com, JBottomley@odin.com
Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
Olaf Hering <olaf@aepfle.de>
Subject: [PATCH] storvsc: use small sg_tablesize on x86
Date: Tue, 8 Sep 2015 10:06:41 +0000 [thread overview]
Message-ID: <1441706801-15300-1-git-send-email-olaf@aepfle.de> (raw)
Reducing the sg_tablesize allows booting of 32bit kernels in VMs, after
commit be0cf6ca301c61458dc4aa1a37acf4f58d2ed3d6 ("scsi: storvsc: Set the
tablesize based on the information given by the host")
[ 5.567138] hv_storvsc vmbus_1: adjusting sg_tablesize 0x800 -> 0x20
Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
drivers/scsi/storvsc_drv.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 40c43ae..36bf183 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1907,6 +1907,11 @@ static int storvsc_probe(struct hv_device *device,
* from the host.
*/
host->sg_tablesize = (stor_device->max_transfer_bytes >> PAGE_SHIFT);
+#if defined(CONFIG_X86_32)
+ dev_warn(&device->device, "adjusting sg_tablesize 0x%x -> 0x%x",
+ host->sg_tablesize, MAX_MULTIPAGE_BUFFER_COUNT);
+ host->sg_tablesize = MAX_MULTIPAGE_BUFFER_COUNT;
+#endif
/* Register the HBA and start the scsi bus scan */
ret = scsi_add_host(host, &device->device);
next reply other threads:[~2015-09-08 10:06 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-08 10:06 Olaf Hering [this message]
2015-10-01 20:30 ` KY Srinivasan
2015-10-01 20:51 ` James Bottomley
2015-10-01 21:27 ` KY Srinivasan
2015-10-02 17:14 ` Olaf Hering
2016-01-25 8:35 ` Olaf Hering
2016-01-27 23:09 ` KY Srinivasan
2016-01-28 6:00 ` James Bottomley
2016-01-28 6:48 ` Olaf Hering
2016-01-28 15:37 ` James Bottomley
2016-02-26 22:11 ` KY Srinivasan
2016-05-16 20:26 Joseph Salisbury
2016-05-17 13:07 ` Olaf Hering
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