Subject: [Bug 206501] Kernel 5.6-rc1 fails to boot on a PowerMac G4 3,6 with CONFIG_VMAP_STACK=y: Oops! Machine check, sig: 7 [#1]

From: [email-masked]
Date: Wed, 12 Feb 2020 18:15:19 +0000

https://bugzilla.kernel.org/show_bug.cgi?id=206501

--- Comment #6 from Christophe Leroy ([email-masked]) ---
I found the reason I think. I just realised that the things saved to SPRN_SPRG
and in thread struct get overwriten by the DSI taken at stack write.

I'll prepare something to fix that.

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