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From c8644154fb4b460f00c9d24ed9090edc40fef067 Mon Sep 17 00:00:00 2001
From: Fam Zheng <famz@redhat.com>
Date: Mon, 11 Jul 2016 05:33:39 +0200
Subject: [PATCH 6/7] scsi: Advertise limits by blocksize, not 512

RH-Author: Fam Zheng <famz@redhat.com>
Message-id: <1468215219-30793-7-git-send-email-famz@redhat.com>
Patchwork-id: 71110
O-Subject: [RHEL-7.3 qemu-kvm PATCH 6/6] scsi: Advertise limits by blocksize, not 512
Bugzilla: 1318199
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: John Snow <jsnow@redhat.com>
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>

From: Eric Blake <eblake@redhat.com>

s->blocksize may be larger than 512, in which case our
tweaks to max_xfer_len and opt_xfer_len must be scaled
appropriately.

CC: qemu-stable@nongnu.org
Reported-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit efaf4781a995aacd22b1dd521b14e4644bafae14)

 Conflicts:
	hw/scsi/scsi-generic.c
Downstream uses bdrv_get_max_transfer_length().

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 hw/scsi/scsi-generic.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c
index 6b0c1fe..ced92f7 100644
--- a/hw/scsi/scsi-generic.c
+++ b/hw/scsi/scsi-generic.c
@@ -210,7 +210,8 @@ static void scsi_read_complete(void * opaque, int ret)
         } else if (s->type == TYPE_DISK &&
             r->req.cmd.buf[0] == INQUIRY &&
             r->req.cmd.buf[2] == 0xb0) {
-            uint32_t max_xfer_len = bdrv_get_max_transfer_length(s->conf.bs);
+            uint32_t max_xfer_len = bdrv_get_max_transfer_length(s->conf.bs) /
+                (s->blocksize / BDRV_SECTOR_SIZE);
             if (max_xfer_len) {
                 stl_be_p(&r->buf[8], max_xfer_len);
                 /* Also take care of the opt xfer len. */
-- 
1.8.3.1