[Bug 217799] kvm: Speculative RAS Overflow mitigation breaks old Windows guest VMs

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https://bugzilla.kernel.org/show_bug.cgi?id=217799

Roman Mamedov (rm+bko@xxxxxxxxxxx) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bp@xxxxxxxxx
     Kernel Version|                            |6.1.44
            Summary|kvm: Windows Server 2003 VM |kvm: Speculative RAS
                   |fails to work on 6.1.44     |Overflow mitigation breaks
                   |(works fine on 6.1.43)      |old Windows guest VMs

--- Comment #4 from Roman Mamedov (rm+bko@xxxxxxxxxxx) ---
Borislav, as you are author of the patch adding Speculative RAS Overflow
mitigation, could you maybe take a look what could be wrong here? Thanks

Windows XP-era 64-bit guest VMs in KVM no longer work with it enabled.

Windows 7 (and likely newer) does work.

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