On 2024-03-08 19:08:50 Fri, Michael Ellerman wrote:
> Aneesh Kumar K V writes:
> > On 3/7/24 5:13 PM, Michael Ellerman wrote:
> >> Mahesh Salgaonkar writes:
> >>> nmi_enter()/nmi_exit() touches per cpu variables which can lead to kernel
> >>> crash when invoked during real mode interrupt handling
Aneesh Kumar K V writes:
> On 3/7/24 5:13 PM, Michael Ellerman wrote:
>> Mahesh Salgaonkar writes:
>>> nmi_enter()/nmi_exit() touches per cpu variables which can lead to kernel
>>> crash when invoked during real mode interrupt handling (e.g. early HMI/MCE
>>> interrupt handler) if percpu allocati
On 2024-03-07 22:43:07 Thu, Michael Ellerman wrote:
> > diff --git a/arch/powerpc/include/asm/interrupt.h
> > b/arch/powerpc/include/asm/interrupt.h
> > index a4196ab1d0167..0b96464ff0339 100644
> > --- a/arch/powerpc/include/asm/interrupt.h
> > +++ b/arch/powerpc/include/asm/interrupt.h
> > @@ -3
On 3/7/24 5:13 PM, Michael Ellerman wrote:
> Hi Mahesh,
>
> Mahesh Salgaonkar writes:
>> nmi_enter()/nmi_exit() touches per cpu variables which can lead to kernel
>> crash when invoked during real mode interrupt handling (e.g. early HMI/MCE
>> interrupt handler) if percpu allocation comes from vm
Hi Mahesh,
Mahesh Salgaonkar writes:
> nmi_enter()/nmi_exit() touches per cpu variables which can lead to kernel
> crash when invoked during real mode interrupt handling (e.g. early HMI/MCE
> interrupt handler) if percpu allocation comes from vmalloc area.
>
> Early HMI/MCE handlers are called th
On Wed, 2024-02-14 at 15:21 +0530, Mahesh Salgaonkar wrote:
> nmi_enter()/nmi_exit() touches per cpu variables which can lead to
> kernel
> crash when invoked during real mode interrupt handling (e.g. early
> HMI/MCE
> interrupt handler) if percpu allocation comes from vmalloc area.
>
> Early HMI/
Le 14/02/2024 à 10:51, Mahesh Salgaonkar a écrit :
> nmi_enter()/nmi_exit() touches per cpu variables which can lead to kernel
> crash when invoked during real mode interrupt handling (e.g. early HMI/MCE
> interrupt handler) if percpu allocation comes from vmalloc area.
>
> Early HMI/MCE handler
nmi_enter()/nmi_exit() touches per cpu variables which can lead to kernel
crash when invoked during real mode interrupt handling (e.g. early HMI/MCE
interrupt handler) if percpu allocation comes from vmalloc area.
Early HMI/MCE handlers are called through DEFINE_INTERRUPT_HANDLER_NMI()
wrapper whi
