[PATCH] arm64: kvm, smccc: Fix vendor uuid
Will Deacon
will at kernel.org
Mon Jul 21 10:45:48 PDT 2025
On Mon, 21 Jul 2025 14:05:58 +0100, Jack Thomson wrote:
> Commit 13423063c7cb ("arm64: kvm, smccc: Introduce and use API for
> getting hypervisor UUID") replaced the explicit register constants
> with the UUID_INIT macro. However, there is an endian issue, meaning
> the UUID generated and used in the handshake didn't match UUID prior to
> the commit.
>
> The change in UUID causes the SMCCC vendor handshake to fail with older
> guest kernels, meaning devices such as PTP were not available in the
> guest.
>
> [...]
Applied to arm64 (for-next/fixes), thanks!
[1/1] arm64: kvm, smccc: Fix vendor uuid
https://git.kernel.org/arm64/c/ab1612211532
There was a stray "getting hypervisor UUID")" line in the original
commit message after the Fixes: tag, so I dropped that bit.
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
More information about the linux-arm-kernel
mailing list