linux-kernel - [PATCH AUTOSEL 4.9 07/12] scsi: vmw_pvscsi: Expand vcpuHint to 16 bits

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Message-Id: <20220614021040.1101131-7-sashal@kernel.org>
Date:   Mon, 13 Jun 2022 22:10:35 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Wentao Wang <wwentao@...are.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <sashal@...nel.org>, jgill@...are.com,
        pv-drivers@...are.com, jejb@...ux.vnet.ibm.com,
        linux-scsi@...r.kernel.org
Subject: [PATCH AUTOSEL 4.9 07/12] scsi: vmw_pvscsi: Expand vcpuHint to 16 bits

From: Wentao Wang <wwentao@...are.com>

[ Upstream commit cf71d59c2eceadfcde0fb52e237990a0909880d7 ]

vcpuHint has been expanded to 16 bit on host to enable routing to more
CPUs. Guest side should align with the change. This change has been tested
with hosts with 8-bit and 16-bit vcpuHint, on both platforms host side can
get correct value.

Link: https://lore.kernel.org/r/EF35F4D5-5DCC-42C5-BCC4-29DF1729B24C@vmware.com
Signed-off-by: Wentao Wang <wwentao@...are.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/scsi/vmw_pvscsi.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/vmw_pvscsi.h b/drivers/scsi/vmw_pvscsi.h
index d41292ef85f2..98ad17cb6643 100644
--- a/drivers/scsi/vmw_pvscsi.h
+++ b/drivers/scsi/vmw_pvscsi.h
@@ -333,8 +333,8 @@ struct PVSCSIRingReqDesc {
 	u8	tag;
 	u8	bus;
 	u8	target;
-	u8	vcpuHint;
-	u8	unused[59];
+	u16	vcpuHint;
+	u8	unused[58];
 } __packed;
 
 /*
-- 
2.35.1