Re: [PATCH 0/3] Check enumeration before MSR save/restore

From: Pawan Gupta
Date: Mon Sep 19 2022 - 12:56:49 EST


On Sat, Sep 17, 2022 at 01:42:13PM +0200, Hans de Goede wrote:
> Hi,
>
> On 9/13/22 02:50, Pawan Gupta wrote:
> > On Mon, Sep 12, 2022 at 04:38:44PM -0700, Pawan Gupta wrote:
> >> Hi,
> >>
> >> This patchset is to fix the "unchecked MSR access error" [1] during S3
> >> resume. Patch 1/3 adds a feature bit for MSR_IA32_TSX_CTRL.
> >>
> >> Patch 2/3 adds a feature bit for MSR_AMD64_LS_CFG.
> >>
> >> Patch 3/3 adds check for feature bit before adding any speculation
> >> control MSR to the list of MSRs to save/restore.
> >>
> >> [1] https://lore.kernel.org/lkml/20220906201743.436091-1-hdegoede@xxxxxxxxxx/
> >
> > Added the correct email-id of Hans de Goede <hdegoede@xxxxxxxxxx>.
>
> I have tested this series and I can confirm that it fixes the exception
> which I was seeing on a Packard Bell Dot SC with an Atom N2600 CPU:
>
> Tested-by: Hans de Goede <hdegoede@xxxxxxxxxx>

Thanks.