Re: [PATCH v5.10 v2] powerpc: Avoid nmi_enter/nmi_exit in real mode interrupt.

2024-08-13 Thread Jinjie Ruan
On 2024/8/13 18:47, Greg KH wrote: > On Tue, Aug 06, 2024 at 07:16:16AM +, Jinjie Ruan wrote: >> From: Mahesh Salgaonkar >> >> [ Upstream commit 0db880fc865ffb522141ced4bfa66c12ab1fbb70 ] >> >> nmi_enter()/nmi_exit() touches per cpu variables which can lead to kernel >> crash when invoked d

Re: [PATCH v5.10 v2] powerpc: Avoid nmi_enter/nmi_exit in real mode interrupt.

2024-08-13 Thread Greg KH
On Tue, Aug 06, 2024 at 07:16:16AM +, Jinjie Ruan wrote: > From: Mahesh Salgaonkar > > [ Upstream commit 0db880fc865ffb522141ced4bfa66c12ab1fbb70 ] > > nmi_enter()/nmi_exit() touches per cpu variables which can lead to kernel > crash when invoked during real mode interrupt handling (e.g. ear

[PATCH v5.10 v2] powerpc: Avoid nmi_enter/nmi_exit in real mode interrupt.

2024-08-06 Thread Jinjie Ruan
From: Mahesh Salgaonkar [ Upstream commit 0db880fc865ffb522141ced4bfa66c12ab1fbb70 ] 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 are