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authorMichael Kelley <mikelley@microsoft.com>2022-04-13 05:49:00 +0300
committerWei Liu <wei.liu@kernel.org>2022-04-25 18:31:44 +0300
commit66200bbcde697dea7f48071d325ea4dec6f66b11 (patch)
treeaf4475e131349685c5a41431812a1bec70b2642a /drivers/hv
parentaf2d861d4cd2a4da5137f795ee3509e6f944a25b (diff)
downloadlinux-66200bbcde697dea7f48071d325ea4dec6f66b11.tar.xz
Drivers: hv: vmbus: Add VMbus IMC device to unsupported list
Hyper-V may offer an Initial Machine Configuration (IMC) synthetic device to guest VMs. The device may be used by Windows guests to get specialization information, such as the hostname. But the device is not used in Linux and there is no Linux driver, so it is unsupported. Currently, the IMC device GUID is not recognized by the VMbus driver, which results in an "Unknown GUID" error message during boot. Add the GUID to the list of known but unsupported devices so that the error message is not generated. Other than avoiding the error message, there is no change in guest behavior. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1649818140-100953-1-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/channel_mgmt.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 85a2142c9384..50fea31f019f 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -152,6 +152,7 @@ static const struct {
{ HV_AVMA1_GUID },
{ HV_AVMA2_GUID },
{ HV_RDV_GUID },
+ { HV_IMC_GUID },
};
/*