lkml.org 
[lkml]   [2023]   [Sep]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3] x86/hyperv: Restrict get_vtl to only VTL platforms
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.

\
 
 \ /
  Last update: 2023-09-22 20:44    [W:0.053 / U:0.344 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site