Re: [PATCH] x86/spectre_v2: Don't check microcode versions when running under hypervisors

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Sorry, a mistake. Please ignore this patch. We will send the whole set
out later.

On 18-04-26 21:14:39, Yi Sun wrote:
> From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> 
> commit 36268223c1e9981d6cfc33aff8520b3bde4b8114 upstream.
> 
> As:
> 
>  1) It's known that hypervisors lie about the environment anyhow (host
>     mismatch)
> 
>  2) Even if the hypervisor (Xen, KVM, VMWare, etc) provided a valid
>     "correct" value, it all gets to be very murky when migration happens
>     (do you provide the "new" microcode of the machine?).
> 
> And in reality the cloud vendors are the ones that should make sure that
> the microcode that is running is correct and we should just sing lalalala
> and trust them.
> 
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Reviewed-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Cc: Wanpeng Li <kernellwp@xxxxxxxxx>
> Cc: kvm <kvm@xxxxxxxxxxxxxxx>
> Cc: Krčmář <rkrcmar@xxxxxxxxxx>
> Cc: Borislav Petkov <bp@xxxxxxxxx>
> CC: "H. Peter Anvin" <hpa@xxxxxxxxx>
> CC: stable@xxxxxxxxxxxxxxx
> Link: https://lkml.kernel.org/r/20180226213019.GE9497@xxxxxxxxxxxxxxxxxx
> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> [Yi Sun: cherry pick to 4.4]
> Signed-off-by: Yi Sun <yi.y.sun@xxxxxxxxxxxxxxx>



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