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[176.243.167.64]) by smtp.gmail.com with ESMTPSA id x4sm5399472edd.58.2021.04.16.07.35.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Apr 2021 07:35:14 -0700 (PDT) From: "Andrea Parri (Microsoft)" To: linux-kernel@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, sthemmin@microsoft.com, wei.liu@kernel.org, linux-hyperv@vger.kernel.org, mikelley@microsoft.com, "Andrea Parri (Microsoft)" Subject: [PATCH v3 1/3] Drivers: hv: vmbus: Introduce and negotiate VMBus protocol version 5.3 Date: Fri, 16 Apr 2021 16:34:47 +0200 Message-Id: <20210416143449.16185-2-parri.andrea@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210416143449.16185-1-parri.andrea@gmail.com> References: <20210416143449.16185-1-parri.andrea@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hyper-V has added VMBus protocol version 5.3. Allow Linux guests to negotiate the new version on version of Hyper-V that support it. Signed-off-by: Andrea Parri (Microsoft) --- drivers/hv/connection.c | 3 ++- include/linux/hyperv.h | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 350e8c5cafa8c..dc19d5ae4373c 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -45,6 +45,7 @@ EXPORT_SYMBOL_GPL(vmbus_proto_version); * Table of VMBus versions listed from newest to oldest. */ static __u32 vmbus_versions[] = { + VERSION_WIN10_V5_3, VERSION_WIN10_V5_2, VERSION_WIN10_V5_1, VERSION_WIN10_V5, @@ -60,7 +61,7 @@ static __u32 vmbus_versions[] = { * Maximal VMBus protocol version guests can negotiate. Useful to cap the * VMBus version for testing and debugging purpose. */ -static uint max_version = VERSION_WIN10_V5_2; +static uint max_version = VERSION_WIN10_V5_3; module_param(max_version, uint, S_IRUGO); MODULE_PARM_DESC(max_version, diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 2c18c8e768efe..3ce36bbb398e9 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -234,6 +234,7 @@ static inline u32 hv_get_avail_to_write_percent( * 5 . 0 (Newer Windows 10) * 5 . 1 (Windows 10 RS4) * 5 . 2 (Windows Server 2019, RS5) + * 5 . 3 (Windows Server 2022) */ #define VERSION_WS2008 ((0 << 16) | (13)) @@ -245,6 +246,7 @@ static inline u32 hv_get_avail_to_write_percent( #define VERSION_WIN10_V5 ((5 << 16) | (0)) #define VERSION_WIN10_V5_1 ((5 << 16) | (1)) #define VERSION_WIN10_V5_2 ((5 << 16) | (2)) +#define VERSION_WIN10_V5_3 ((5 << 16) | (3)) /* Make maximum size of pipe payload of 16K */ #define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384) -- 2.25.1