On Thu, 5 Nov 2020 10:10:18 +0100, Andrew Jones wrote:
> 张东旭 <xu910121@xxxxxxxx> reported a regression seen with CentOS
> when migrating from an old kernel to a new one. The problem was
> that QEMU rejected the migration since KVM_GET_REG_LIST reported
> a register was missing on the destination. Extra registers are OK
> on the destination, but not missing ones. The regression reproduces
> with upstream kernels when migrating from a 4.15 or later kernel,
> up to one with commit 73433762fcae ("KVM: arm64/sve: System register
> context switch and access support"), to a kernel that includes that
> commit, e.g. the latest mainline (5.10-rc2).
>
> [...]
Applied to next, thanks!
[1/4] KVM: arm64: Don't hide ID registers from userspace
commit: f81cb2c3ad41ac6d8cb2650e3d72d5f67db1aa28
[2/4] KVM: arm64: Consolidate REG_HIDDEN_GUEST/USER
commit: 01fe5ace92ddb8732e3331355e7ba9cb6f2ef787
[3/4] KVM: arm64: Check RAZ visibility in ID register accessors
commit: 912dee572691ffb2b387dd8b4f183d549a6b24d1
[4/4] KVM: arm64: Remove AA64ZFR0_EL1 accessors
commit: c512298eed0360923d0cbc4a1f30bc0509af0d50
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
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