APPLIED: [J/linux-riscv][PATCH] UBUNTU: [Config] Disable VMAP_STACK due to CPU stalls on EFI

[Dimitri John Ledkov]

to jammy linux-riscv.
-- 
okurrr,

Dimitri

On Fri, 8 Apr 2022 at 19:30, Tim Gardner <tim.gardner at canonical.com> wrote:
>
> Acked-by: Tim Gardner <tim.gardner at canonical.com>
>
> On 4/7/22 05:50, Dimitri John Ledkov wrote:
> > BugLink: https://bugs.launchpad.net/bugs/1967130
> >
> > When booting with EFI, VMAP_STACK causes CPU stalls. Disable this
> > config option, until a fix exists that allows using VMAP_STACK
> > together with EFI. VMAP_STACK on RISC-V was first added in v5.14
> > kernels, thus this option has not yet shipped in any stable
> > series. EFI support is new in Jammy as well.
> >
> > Signed-off-by: Dimitri John Ledkov <dimitri.ledkov at canonical.com>
> > ---
> >   debian.riscv/config/config.common.ubuntu | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/debian.riscv/config/config.common.ubuntu b/debian.riscv/config/config.common.ubuntu
> > index 2eac551e14..34a6c3f6b6 100644
> > --- a/debian.riscv/config/config.common.ubuntu
> > +++ b/debian.riscv/config/config.common.ubuntu
> > @@ -8228,7 +8228,7 @@ CONFIG_VL6180=m
> >   CONFIG_VLAN_8021Q=m
> >   CONFIG_VLAN_8021Q_GVRP=y
> >   CONFIG_VLAN_8021Q_MVRP=y
> > -CONFIG_VMAP_STACK=y
> > +# CONFIG_VMAP_STACK is not set
> >   CONFIG_VME_BUS=y
> >   CONFIG_VME_FAKE=m
> >   CONFIG_VME_TSI148=m
>
> --
> -----------
> Tim Gardner
> Canonical, Inc