Re: [PATCH v5] powerpc: Avoid nmi_enter/nmi_exit in real mode interrupt.

On Wed, 10 Apr 2024 10:00:06 +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

Re: [PATCH v5] powerpc: Avoid nmi_enter/nmi_exit in real mode interrupt.

On Wed, 2024-04-10 at 10:00 +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

[PATCH v5] powerpc: Avoid nmi_enter/nmi_exit in real mode interrupt.

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