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Date: Wed, 17 Jan 2018 19:00:47 -0800 From: Linus Torvalds <torvalds@...ux-foundation.org> To: Dave Young <dyoung@...hat.com> Cc: Arjan van de Ven <arjan@...ux.intel.com>, Yu Chen <yu.c.chen@...el.com>, Thomas Gleixner <tglx@...utronix.de>, Juergen Gross <jgross@...e.com>, Tony Luck <tony.luck@...el.com>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, Borislav Petkov <bp@...en8.de>, Rui Zhang <rui.zhang@...el.com>, Dan Williams <dan.j.williams@...el.com>, Ingo Molnar <mingo@...nel.org>, Kexec Mailing List <kexec@...ts.infradead.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, ebiederm@...hat.com, Tom Lendacky <thomas.lendacky@....com>, Baoquan He <bhe@...hat.com> Subject: Re: kexec reboot fails with extra wbinvd introduced for AME SME On Wed, Jan 17, 2018 at 6:57 PM, Dave Young <dyoung@...hat.com> wrote: > > Could you say more about how to check this? My .config disabled > CONFIG_X86_MCE, should this be enabled? By all means, try it. Some pending machine check exception that we have *not* reacted to, and that is pending around kexec boot could very possibly be relevant. I forget your exact symptoms. Was it that the _first_ kexec works, but the second one hangs? Or was that the other unrelated issue? Or have I confused this with some other report entirely? Linus
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