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| author |   Michael Kelley <mikelley@microsoft.com> | 2022-03-24 12:20:21 -0700 |
|---|---|---|
| committer |   Jason A. Donenfeld <Jason@zx2c4.com> | 2022-03-25 08:49:40 -0600 |
| commit | 0396e46dc46523cba8401a0df84f67cc0b6067ab (patch) | |
| tree | b9d180748b1552b144f0499e755932ac8cbb25d9 /drivers/virt/vmgenid.c | |
| parent | random: re-add removed comment about get_random_{u32,u64} reseeding (diff) | |
| download | linux-dev-0396e46dc46523cba8401a0df84f67cc0b6067ab.tar.xz linux-dev-0396e46dc46523cba8401a0df84f67cc0b6067ab.zip | |
virt: vmgenid: recognize new CID added by Hyper-V
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>
Diffstat (limited to 'drivers/virt/vmgenid.c')
| -rw-r--r-- | drivers/virt/vmgenid.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/virt/vmgenid.c b/drivers/virt/vmgenid.c index 0ae1a39f2e28..a1c467a0e9f7 100644 --- a/drivers/virt/vmgenid.c +++ b/drivers/virt/vmgenid.c @@ -78,6 +78,7 @@ static void vmgenid_notify(struct acpi_device *device, u32 event) } static const struct acpi_device_id vmgenid_ids[] = { + { "VMGENCTR", 0 }, { "VM_GEN_COUNTER", 0 }, { } }; |