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Date: Thu, 22 Jan 2015 17:40:45 -0800 From: Andy Lutomirski <luto@...capital.net> To: "Luis R. Rodriguez" <mcgrof@...not-panic.com> Cc: David Vrabel <david.vrabel@...rix.com>, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>, kvm list <kvm@...r.kernel.org>, Paul McKenney <paulmck@...ux.vnet.ibm.com>, Steven Rostedt <rostedt@...dmis.org>, "Luis R. Rodriguez" <mcgrof@...e.com>, Borislav Petkov <bp@...e.de>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>, Jan Beulich <JBeulich@...e.com> Subject: Re: [RFC v4 1/2] x86/xen: add xen_is_preemptible_hypercall() On Thu, Jan 22, 2015 at 4:29 PM, Luis R. Rodriguez <mcgrof@...not-panic.com> wrote: > From: "Luis R. Rodriguez" <mcgrof@...e.com> > > On kernels with voluntary or no preemption we can run > into situations where a hypercall issued through userspace > will linger around as it addresses sub-operatiosn in kernel > context (multicalls). Such operations can trigger soft lockup > detection. Looks reasonable. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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