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From c8644154fb4b460f00c9d24ed9090edc40fef067 Mon Sep 17 00:00:00 2001
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From: Fam Zheng <famz@redhat.com>
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Date: Mon, 11 Jul 2016 05:33:39 +0200
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Subject: [PATCH 6/7] scsi: Advertise limits by blocksize, not 512
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RH-Author: Fam Zheng <famz@redhat.com>
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Message-id: <1468215219-30793-7-git-send-email-famz@redhat.com>
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Patchwork-id: 71110
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O-Subject: [RHEL-7.3 qemu-kvm PATCH 6/6] scsi: Advertise limits by blocksize, not 512
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Bugzilla: 1318199
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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From: Eric Blake <eblake@redhat.com>
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s->blocksize may be larger than 512, in which case our
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tweaks to max_xfer_len and opt_xfer_len must be scaled
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appropriately.
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CC: qemu-stable@nongnu.org
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Reported-by: Fam Zheng <famz@redhat.com>
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Signed-off-by: Eric Blake <eblake@redhat.com>
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Reviewed-by: Fam Zheng <famz@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit efaf4781a995aacd22b1dd521b14e4644bafae14)
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Conflicts:
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hw/scsi/scsi-generic.c
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Downstream uses bdrv_get_max_transfer_length().
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Signed-off-by: Fam Zheng <famz@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/scsi/scsi-generic.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c
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index 6b0c1fe..ced92f7 100644
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--- a/hw/scsi/scsi-generic.c
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+++ b/hw/scsi/scsi-generic.c
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@@ -210,7 +210,8 @@ static void scsi_read_complete(void * opaque, int ret)
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} else if (s->type == TYPE_DISK &&
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r->req.cmd.buf[0] == INQUIRY &&
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r->req.cmd.buf[2] == 0xb0) {
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- uint32_t max_xfer_len = bdrv_get_max_transfer_length(s->conf.bs);
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+ uint32_t max_xfer_len = bdrv_get_max_transfer_length(s->conf.bs) /
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+ (s->blocksize / BDRV_SECTOR_SIZE);
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if (max_xfer_len) {
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stl_be_p(&r->buf[8], max_xfer_len);
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/* Also take care of the opt xfer len. */
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--
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1.8.3.1
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