Messages in this thread | | | Date | Fri, 22 Sep 2023 18:41:55 +0000 | From | Wei Liu <> | Subject | Re: [PATCH v3] x86/hyperv: Restrict get_vtl to only VTL platforms |
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On Tue, Sep 19, 2023 at 09:04:35PM -0700, Saurabh Sengar wrote: > When Linux runs in a non-default VTL (CONFIG_HYPERV_VTL_MODE=y), > get_vtl() must never fail as its return value is used in negotiations > with the host. In the more generic case, (CONFIG_HYPERV_VTL_MODE=n) the > VTL is always zero so there's no need to do the hypercall. > > Make get_vtl() BUG() in case of failure and put the implementation under > "if IS_ENABLED(CONFIG_HYPERV_VTL_MODE)" to avoid the call altogether in > the most generic use case. > > Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com> > Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Applied to hyperv-fixes. Thanks.
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