Re: [PATCH] Revert "powerpc/64s: machine check interrupt update NMI accounting"

On Tue, Sep 15, 2020 at 08:06:59PM +0200, Michal Suchanek wrote:

This reverts commit 116ac378bb3ff844df333e7609e7604651a0db9d.

This commit causes the kernel to oops and reboot when injecting a SLB multihit which causes a MCE.

Before this commit a SLB multihit was corrected by the kernel and the system continued to operate normally.

cc: stable@vger.kernel.org Fixes: 116ac378bb3f ("powerpc/64s: machine check interrupt update NMI accounting") Signed-off-by: Michal Suchanek msuchanek@suse.de

Ever since 69ea03b56ed2 ("hardirq/nmi: Allow nested nmi_enter()") nmi_enter() supports nesting natively.