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virt: vmgenid: recognize new CID added by Hyper-V

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In the Windows spec for VM Generation ID, the originally specified CID
is longer than allowed by the ACPI spec. Hyper-V has added "VMGENCTR" as
a second valid CID that is conformant, while retaining the original CID
for compatibility with Windows guests.

Add this new CID to the list recognized by the driver.

Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Michael Kelley 2022-03-24 12:20:21 -07:00 committed by Jason A. Donenfeld
parent dd7aa36e53
commit 0396e46dc4
1 changed files with 1 additions and 0 deletions
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drivers/virt/vmgenid.c
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@ -78,6 +78,7 @@ static void vmgenid_notify(struct acpi_device *device, u32 event)
} }
static const struct acpi_device_id vmgenid_ids[] = { static const struct acpi_device_id vmgenid_ids[] = {
{ "VMGENCTR", 0 },
{ "VM_GEN_COUNTER", 0 }, { "VM_GEN_COUNTER", 0 },
{ } { }
}; };